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RSS2023 Vol. 10, No. 6
column
- Cover & Contents
- Energy Strategy and Planning
- Hydrogen Technology
- Energy Storage Technology
- Intelligent Power Plant
- Clean and Efficient Power Generation
- Advanced Transmission and Smart Grid
- Offshore Wind Power Engineering Technology
- Energy Conservation Technology
- Advanced Nuclear Power Engineering Technology
- Energy Economy and Market
Display Method:
2023, 10(6): 1-13.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.001
Abstract:
Introduction Carbon capture, utilization and storage (CCUS) is one of the key technologies for achieving carbon neutrality. The coastal area of Guangdong Province is a potential area for offshore CO2 storage projects in China. Understanding the development status of CCUS technology in the context of carbon neutrality and analyzing the offshore CO2 storage potential in the coastal area of Guangdong Province are conducive to provide the basis for large-scale CCUS projects, especially the offshore storage projects in the future in China. Method The technical routes and development trends of all aspects of CCUS were summarized. The offshore geological storage potential of CO2 in the Pearl River Mouth Basin and the Beibu Gulf Basin off the coast of Guangdong Province was discussed. The problems of offshore CO2 storage in China were summarized, and relevant suggestions were put forward. Result In recent years, China has made significant progress in CCUS technology, but some key technologies in transportation and storage has been still at the R&D demonstration stage. The Pearl River Mouth Basin and the Beibu Gulf Basin have enormous geological storage potential of CO2 and an excellent matching relationship with large CO2 emission sources in the coastal area of Guangdong Province, making it an ideal locations for offshore CO2 storage projects. However, offshore CO2 storage still faces problems such as immature technology, high storage costs, uncertain environmental impacts, and inadequate policy and regulation frameworks in China. It is necessary to focus on technological development, promoting cluster projects, and improving policies and relevant regulations to advance the development of offshore CO2 storage. Conclusion In the future, China should strengthen research, development and promotion of CCUS, especially the offshore storage technology, to promote the progress of carbon neutrality.
2023, 10(6): 43-50.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.005
Abstract:
Introduction Large-scale new energy penetration is an important feature of the new power system. There is a certain contradiction between the high proportion of new energy consumption and the safe, economical and efficient operation of power system. From the point of view of the overall economy of the system, this study puts forward a calculation method of the reasonable consumption rate of new energy transmission. Method This method aimed to minimize the incremental total cost of new energy access, comprehensively considered the cost of power grid consumption, the cost of new energy abandonment and environmental protection, and systematically studied the key influencing factors of reasonable consumption rate. Result The effectiveness of this method is verified by practical examples of offshore wind power, onshore wind power and photovoltaic, and the general rules of reasonable consumption rate and selection of new energy transmission scheme are summarized by concentrated exploration of multiple examples. Conclusion The proposed method provides a new idea for power grid planning with high proportion of new energy access in the future, and provides an important reference for guiding the follow-up new energy access system and dispatching operation.
2023, 10(6): 14-25.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.002
Abstract:
Introduction As the country has set ambitious targets in carbon peaking and carbon neutrality for the energy sector, there is a growing demand for technology improvements of low-carbon emission for power station gas turbines. It is urgent to explore the path of the key technology for this goal in China. The lean premixed combustion technology of gas turbine can make the air volume for combustion deviate from the theoretical air volume, which is the main technology to reduce NOx emission at present. At the same time, by mixing hydrogen in natural gas when combusting, it can effectively reduce the consumption of fossil energy and reduce carbon emissions. Method In this paper, a one-dimensional premixed free propagation flame model was established by Chemkin-Pro software, and the effects of different equivalent ratios, initial temperatures, initial pressures, and hydrogen-blended ratios on combustion temperatures, combustion rates, pollutant generation concentration, combustion free radicals, and chain reactions were compared. The temperature distribution, fuel component change and emission characteristics of combustion process were simulated. Result It is found that by mixing hydrogen in natural gas when combusting, fossil energy consumption and carbon emissions can be effectively reduced. However, the higher flame temperature brought by the lean premixed combustion of natural gas mixed with hydrogen will promote the generation of NOx, and at the same time, more CO will be produced at a lower equivalent ratio. Conclusion Based on the above research, the key data of hydrogen-blended combustion are obtained, which lays a foundation for the completion of hydrogen-blended combustion technology route.
2023, 10(6): 26-33.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.003
Abstract:
Introduction As a long-term energy storage form, compressed air energy storage (CAES) has broad application space in peak shaving and valley filling, grid peak regulation, new energy consumption, auxiliary services, and other aspects, which is of great significance for accelerating the construction of a new power system with new energy as the main body in the context of "carbon peak & carbon neutrality". Method Firstly, current status of CAES were analyzed and summarized from the principles and technical classifications. Then, based on the current technological development, a creative solution of CAES was proposed by China Energy Engineering Corporation Limited, which includes the "medium temperature adiabatic compression" technology route for high-pressure hot water heat storage and the "high temperature adiabatic compression" technology route for low melting point molten salt and hot water combined heat storage. The key technical points, such as system integration and optimization, equipment selection, heat storage medium, gas storage equipment, and digital network storage coordination, have been introduced. Finally, engineering cases were introduced around the two technical routes. Result The results indicate that, in order to improve the conversion efficiency of power plants, it is necessary to comprehensively consider the material flow and energy flow coupling characteristics of various systems, such as compressor system, turbo-expander system, heat storage system, and gas storage system, and then develop the key equipment such as compressors, turbo-expanders, heat exchangers suitable for compressed air energy storage, as well as key technologies such as underground gas storage and grid storage coordination. Conclusions The research can provide scientific reference for the subsequent development of CAES.
2023, 10(6): 51-63.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.006
Abstract:
Introduction The application scenarios of peak shaving and valley filling by energy storage connected to the distribution network are studied to clarify the influence of energy storage access on network losses and voltage quality on the distribution network side. Method The paper analyzed the change trend of network loss power with the energy storage injection current and access position during peak hours of energy storage discharge, and then analyzed the change trend of network loss power with the energy storage injection current and access position when the energy storage system was connected and charged during valley hours. For the influence of energy storage connected to the distribution network for peak shaving and valley filling on the voltage of the distribution network, the influence of different energy storage injection currents and access positions on the voltage distribution along the distribution network was studied from the perspective of energy storage discharge during peak hours and energy storage charging during valley hours. Finally, considering the total voltage deviation index of the distribution network, the influence on the total voltage deviation index after the distribution network which was connected to energy storage was studied. Result Through simulation calculations, the influence trend of energy storage participating in peak shaving and valley filling for the distribution network on network loss power and voltage loss is analyzed when different fixed or continuous values of energy storage current and access position are taken, and it is compared with theoretical analysis. Conclusion The study will provide useful references for the coordinated planning and optimized operation of various energy storage facilities in the distribution network, and it has good engineering reference value.
2023, 10(6): 64-70.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.007
Abstract:
Introduction In the context of "Dual Carbon", the demands for ancillary services of the electric power system are increasing. However, traditional thermal power units have many problems in AGC control. As a new energy storage mode, the battery energy storage has the great potential for applying in ancillary service market because of its advantages of fast response and high precision. Method In this paper, the battery energy storage participating in AGC ancillary service of a coal-fired unit in Guangdong Province was taken as an example. The cost-benefit model was established to study the economic benefits of the AGC frequency control, and three aspects including the investment payback period, the net profit of life cycle and the net present value of project investment were investigated with respect to different energy storage capacity. Result The net profit and the net present value of project investment increase with higher energy capacity. The increase rate of the net profit and the net present value of project investment slows down as the energy capacity changes from 17.5 MWh to 30 MWh. The investment payback period is the shortest as the energy capacity is 17.5 MWh. The investment payback period has a small increase as the energy capacity changes from 17.5 MWh to 30 MWh. Conclusion For thermal power units with energy storage, when the capacity of thermal power units is configured with 3%~5% energy storage batteries, the net profit and the investment payback period of the Project can achieve a good effect, and the best effect can be achieved when 3% energy storage batteries are configured.
2023, 10(6): 71-77.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.008
Abstract:
Introduction In view of the economic benefits of AGC frequency regulation project of combined energy storage in Guangdong coal-fired power plant, the method of establishing typical engineering cases is demonstrated. Method This article summarized the latest version of frequency regulation auxiliary market revenue settlement rules in the southern region and calculated the frequency regulation performance index of typical 2 × 600 MW coal-fired units using lithium iron phosphate battery energy storage in Guangdong Province, then established a revenue model, estimated or assumed the key parameters such as cost, mileage, clearing price, running time, etc. Finally, under the contract energy management mode, it calculated its economy from the perspective of investors and analyzed the changes of financial index under different total investment, operation year and revenue sharing. Result The results show that in the measured case, except for the first sharing scheme, the internal rate of return of capital in other scenarios all exceeds 7%. Conclusion The frequency regulation project of lithium iron phosphate battery energy storage in Guangdong has a good return on investment within four years. After that, investors can still be attracted to participate in this project with the decrease of total investment and the increase of share.
2023, 10(6): 89-97.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.010
Abstract:
Introduction Accurate estimation of the Li-ion batteries' State of Health (SoH) is essential for future intelligent battery management systems. To solve the problems of poor quality of data features and difficulties in adjusting model parameters, this study proposes a method for estimating the SoH of lithium batteries based on singular value fixed-order noise reduction and the sparrow search algorithm which can optimize the gated recurrent unit (GRU) neural network. Method Firstly, three indicators highly correlated with SoH decay were extracted from the battery charge and discharge data. Noise reduction was applied to the features using singular value decomposition techniques to improve their correlation with SoH. Next, using the sparrow search algorithm to optimize the model structure and parameters of the GRU neural network improve the accuracy of estimation of SoH. Finally, the battery data sets from Centre for Advanced Life Cycle Engineering (CALCE) were used to verify the validity of the proposed model. Result The experimental results show that the model proposed in this study applies to the battery SoH estimation, with a maximum root mean square error (RMSE) of only 0.018 4. After data noise reduction and algorithm optimization, the RMSE of the GRU model is reduced by 55.41% compared to the initial model. Conclusion The method proposed in this paper accurately estimates SoH and can be used as a reference for practical engineering applications.
2023, 10(6): 170-176.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.020
Abstract:
Introduction With the development of energy storage technology, technical schemes and application scenarios become more and more complex. For energy storage research, the conventional classification method based on technical route has certain limitations in some cases. Method A classification method of energy storage research based on object hierarchy was proposed: according to the hierarchy order of objects from micro to macro, energy storage researches were divided into material-level, device-level, system & power plant-level and power system-level. This method was applied to the quantitative analysis of 5 397 articles published in journals of energy storage research retrieved by CNKI. Result The results show that the number of power system-level research literatures in 2022 is obviously more than other types of literatures, and the number and cumulative citation times of power system-level research literatures in the top 200 literatures cited from 2001 to 2022 are absolutely superior. Before 2010, material-level and device-level research literatures account for a relatively high proportion. Since 2010, the proportion of system & power plant-level and power system-level research literatures has gradually increased, and the growth rate of power system-level research literatures is more obvious. The newly installed capacity of new energy storage from 2011 to 2022 is positively correlated with the number of literatures. Since the system & power plant-level research often directly focuses on actual projects, the number of such literatures is most closely related to the newly installed capacity. Conclusion A new way to summarize the research results of energy storage is provided, which could provide support for industrial policy formulation, industrial chain layout and other work.
2023, 10(6): 34-42.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.004
Abstract:
Introduction In order to change the current patrol inspection mode of power plant mainly based on manual patrol ins-pection, improve the intelligent level of power plant patrol inspection, and fully grasp the design method of robot autonomous patrol inspection system. Method This paper started from the design idea of the robot autonomous patrol inspection system, defined the system functions, and gave the design scheme of the patrol inspection system from the hardware architecture and software functions. Based on this design scheme, a 5G+ robot autonomous patrol inspection system integrating progressiveness and practicality was designed. In addition, in order to make the robot's patrol inspection results more intuitively reflect the actual operation of the power plant, this paper, based on intelligent image processing technology, completed the analysis and processing of instrument readings, valves, button switch status and other information. Result The 5G+ robot autonomous patrol inspection system can realize map construction, task deployment, autonomous navigation and execution of patrol inspection tasks, automatic identification of patrol inspection equipment, and use 5G to return patrol inspection data, complete the analysis of patrol inspection results and automatically generate patrol inspection reports. Conclusion The 5G+ robot autonomous patrol inspection system in intelligent power plant developed in this paper can significantly improve the patrol inspection efficiency, improve the intelligent level of power plant operation and maintenance, provide strong technical support for the independent patrol inspection operation of the power plant, provide reliable basis for professionals to comprehensively grasp the operation status of the boiler room, steam turbine room, booster station and auxiliary workshop, and ensure the safe operation of equipment in key areas while reducing personnel and increasing efficiency, better assist the construction of smart power plants.
2023, 10(6): 78-88.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.009
Abstract:
Introduction In order to meet the needs of the rapid development of China's industry for high parameters and high-quality heat load, make full use of the advantages of the high efficiency of supercritical large-capacity units and the high thermal energy utilization rate of back pressure turbine generator units, it is necessary to develop and control the operation of supercritical reheat back pressure units. Method In this paper, on the basis of the research on the form and operation mode of the thermal system of the supercritical back pressure units, the control strategy under different operation conditions of the unit was proposed, and the simulation model of the turbine side of the supercritical reheat back pressure unit was established. Result The correctness of the control strategy is verified by the simulation of the key control strategy of the unit. Conclusion It lays a technical foundation for the engineering demonstration of supercritical reheat back pressure turbine technology and provides a reference for the heat supply transformation of the existing extraction-condensing units.
2023, 10(6): 120-131.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.014
Abstract:
Introduction The technical analysis and investigation on the application of process equipment in the gasification area of the LNG (Liquefied Natural Gas) emergency reserve center, is carried out to solve the problems of frosting and icing in the operation of a single grouping of ambient air vaporizers, in the gasification area of Xi'an Yinzhen LNG emergency reserve center. Method The LNG gasification technology in use mainly included ambient air vaporizing and water-bath vaporizing in Chinese Mainland. When the ambient air vaporizer was operated with high load and in low temperature seasons, it was easy to fog around the equipment, and the equipment surface would always be covered with frost and ice but the water-bath vaporizer did not have this phenomenon. After the investigation and comparison of the operation of gasification equipment in various station gasification process areas, such as LNG reserve centers and coastal terminals in recent years, the independent LNG water bath vaporizer could realize the gasification production without frost, ice and fog on the surface of the equipment in engineering; The combined operation system of the water-bath vaporizer and the ambient air vaporizer could combine and optimize the LNG gasification, which could not only obtain the heat energy contained in the air for LNG gasification production, but also eliminate the impact of low-temperature fogging, ice and frost on LNG gasification production. Result The gasification process in Chinese Mainland of LNG with large reserve can smoothly complete the production without being affected by low temperatures. Conclusion To build a green energy system, based on the formation of a new energy network, high-efficiency energy transmission, distribution, storage and conversion technologies as well as the integration and complementary development of the natural gas, wind, solar, water, hydrogen, and other renewable clean energies for gas power generation, have important supporting roles in perfecting energy storage engineering and technology, thus the optimization of large-scale LNG gasification technology is an important engineering practice.
2023, 10(6): 132-137.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.015
Abstract:
Introduction Pipeline hydraulic calculation is an important component of the natural gas transmission and distribution system. Applying this theory allows for the analysis of relationships between the pipeline diameter, the flow velocity, the pressure drop, and the gas density. It plays a crucial role throughout the entire lifecycle of natural gas pipeline construction and operation. Pipeline hydraulic calculation has an important impact on the design optimization and operation scheduling of pipeline transmission and distribution. This article aims to simulate and analyze the hydraulic calculation of a long-distance natural gas main pipeline in a certain region to provide reference data for practical works such as the construction and operation optimization of the main pipeline in that region. Method In the existing regional pipeline network, the PIPELINE STUDIO software model was used to calculate and simulate the operation status of the main pipeline in the region under different working conditions. The focus was on extreme working conditions, such as "peak demand in summer " and "supply guarantee in winter", aiming to identify potential issues in pipeline operation and analyze the main gas transmission bottlenecks. Result The research has shown that whether the working condition is of "peak demand in summer" or " supply guarantee in winter", the current pipeline system in the region has gas transmission bottlenecks, and it is necessary to optimize and adjust the pipeline operation scheduling, the gas flow direction, and the hydraulic pressure to further maximize the gas transmission capacity of the regional pipeline network. Conclusion By analyzing the gas transmission capacity under different extreme working conditions, it is possible to propose plans in optimized operations, interconnections, and technological improvements, which can eliminate pipeline bottlenecks, ensure the safe and efficient operation of regional pipeline networks, and meet the changing gas consumption requirements of market users.
2023, 10(6): 98-104.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.011
Abstract:
Introduction Under the current situation of increasing automation level of distribution network, in order to solve the problem that the influence of distribution automation is not considered in traditional distribution network power supply reliability assessment methods, in this paper, a method for rapid assessment of power supply reliability of urban distribution network is proposed, which takes into account the automatic partitioning of distribution network. Method In this paper, based on the node division method of path characteristics, by demarcating automatic partitioning of distribution network, defining large and small segments, a method for evaluating the effect of power supply reliability improvement that was suitable for automatic partitioning of distribution network was proposed. Result Compared with the industry standard for reliability evaluation of medium-voltage distribution network, the proposed method fully considers the influence of distribution automation on reducing fault location, isolation and switching operation time, and the evaluation result is reduced by about 22%. Conclusion The proposed method can more accurately analyze the power supply reliability of the distribution network with a higher level of distribution automation, and is suitable for urban distribution network areas with a small power outage time base.
2023, 10(6): 138-145.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.016
Abstract:
Introduction Since the power line has the characteristics of long transmission distance and a complex spatial environment, the UAV LiDAR point cloud technology can completely and efficiently obtain the geometric information of the power line and its surrounding spatial objects, and the existing supervised extraction and unsupervised extraction methods are deficient in point cloud data extraction in a large range of complex environments, according to the spatial environment characteristics of the main network and distribution network line point cloud data, a rapid extraction method of point cloud power line is proposed based on projection line characteristics and region growing algorithm. Method Firstly, in view of the characteristics that the overhead lines of the main network were usually higher than the surrounding spatial objects, the power lines were roughly extracted by the elevation histogram threshold method. Then, considering the characteristics that the vegetation canopy was higher than the distribution network line in the distribution network area, the KNN data points of the roughly extracted power line point cloud were obtained, and the point cloud was projected on the horizontal plane, and whether the point cloud was a power line point cloud was judged by the linear measurement of the point cloud. Result According to the existence of missing power line point clouds, all the power line point cloud clusters are obtained through a region growing mode, and on this basis, the catenary formula of each power line point cloud cluster is calculated through the catenary formula, and the point cloud with a fitting distance less than the threshold is merged as the same power line point cloud. Conclusion The proposed method aims at the problem of rapid power line extraction in inspection applications and overcomes the problem of power line point cloud missing and vegetation impact in the process of power line extraction, so this method can achieve power line point cloud extraction with high efficiency and accuracy.
2023, 10(6): 146-152.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.017
Abstract:
Introduction With the continuous and rapid growth of the number of tree barrier inspections, visible light aerial photogrammetry has become the most important inspection method for hidden dangers of tree barriers in transmission lines of power supply bureaus in various cities. Since airborne laser radar cannot perform rapid iteration on a large number of point clouds, it is difficult to obtain high-precision point cloud power lines with visible light aerial photogrammetry. In the case of flourishing trees, it is difficult to comprehensively judge and analyze the relationship between tree tops, tree crowns and power lines, which results in problems such as misjudgment and omission of hidden dangers of tree barriers in the process of power line inspection. In order to solve this kind of problem, a solution of acquiring vectorized power line by laser radar is proposed. Through the intelligent analysis of vegetation information collected by multi-period visible light aerial photogrammetry, the solution of tree barrier is obtained. Method In view of the comprehensive situation that the image data collected by visible light aerial photogrammetry couldn't obtain high-precision point cloud power lines, it was difficult to simultaneously and comprehensively analyze the relationship between tree tops, tree crowns and power lines, and laser point cloud data couldn't be quickly iterated in large quantities, an overhead line tree barrier rapid analysis and processing system for multi-source spatio-temporal data of vectorized power lines was developed, which was suitable for the current conventional tree barrier inspection means, had comprehensive functions, saved resources, and was suitable for transmission and distribution networks. Result Through the three-dimensional real scene display of laser point cloud and visible light image data, the function of identifying and analyzing hidden dangers of tree barriers in power lines is realized. The vectorized power lines are complete and accurate. At the same time, combined with oblique photography technology, the data analysis of the hidden dangers of tree barriers results can identify 100% of the number of tree barrier hidden dangers. Conclusion The technical solution is accurate and effective, improves the efficiency and accuracy of the inspection of hidden dangers of tree barriers, and can provide guidance for practical application.
2023, 10(6): 105-111.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.012
Abstract:
Introduction Strategies for preventing corrosion in steel structures at offshore wind farms, derived from a comprehensive study on the environmental conditions, symptoms, and mechanisms of corrosion in such structures, as well as an analysis on various causes were proposed, aiming to ensure safe operation throughout their lifecycle. Method The study focused on the grid-connected offshore wind farms and investigated corrosion observed in specific marine environmental conditions for different foundation types, structural components, materials, and parts. Result The results show that corrosion appears in various forms and progresses at varying rates among different foundation types, structural components, and parts in specific marine environmental conditions. Electrochemical corrosion is identified as the main form of corrosion, while internal and external stresses act as potential accelerators of corrosion in steel structures. Manufacturing quality control and the implementation of protective measures directly affect the rate of corrosion development. Conclusion In summary, it is crucial to identify various potential risks related to manufacturing characteristics, material properties, and environmental conditions of steel structures at offshore wind farms and take appropriate refined protection measures to eliminate underlying causes. In addition, protection levels should be increased for certain critical parts.
2023, 10(6): 112-119.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.013
Abstract:
Introduction The proposal of the "dual carbon" strategy has given new requirements and connotations to the reduction of energy consumption intensity and the "dual control" of the total amount. On the premise of adhering to the priority of energy efficiency, we should fully consider the stage of regional development and reasonably ensure the "dual control" indicators are decomposed and implemented layer by layer. Method Taking the decomposition of the "dual control" indicators of energy consumption in the "14th Five-Year Plan" of a certain city as an example, this paper selected quantifications that could reflect the economic level, energy consumption volume, energy-saving potential and the completion of the energy-saving goals of the "13th Five-Year Plan" indicators of each district and county (city) and built a combined weighting assignment model based on the combination of hierarchical analysis and objective weighting to calculate the weight of each indicator, obtaining the "dual control" indicator distribution results, and then used clustering analysis to carry out the differentiation of the indicator system and cluster aggregation. Result By comparing the results of combination weighting and clustering analysis, the regional energy consumption intensity reduction target decomposition algorithm based on multi-indicator combination weighting and clustering analysis can obtain basically consistent results. Conclusion Based on the results of the above two methods, the actual economic development and government management needs, the energy consumption management targets of different levels are obtained, which takes into account regional development differences, conforms to the national "14th Five-Year Plan" energy consumption "dual control" system requirements and decomposition principle, and has the characteristics of replicability and promotion.
2023, 10(6): 153-159.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.018
Abstract:
Introduction This article aims to overcome the shortcomings of commissioning techniques for reactor protection systems and improve the efficiency and quality of reactor protection system commissioning. Method A set of automation commissioning tools was specifically designed for the reactor protection system of the HTR-PM. The tools which adopted advanced technology could automatically complete the commissioning of the reactor protection system, and could greatly improve the efficiency and quality of commissioning. Result This article mainly elaborates on the R&D and application of the commissioning tools for the reactor protection system of HTR-PM (High-Temperature Gas-cooled Reactor—Pebble-bed Module). It introduces the R&D process, difficulties, and contents of the commissioning tools, as well as the design ideas, implementation methods, and results of automatic commissioning functions such as signal output, signal acquisition, data processing, and information display. Through the actual commissioning and application of the reactor protection system of the HTR-PM in terms of function and performance verification, these tools are able to quickly and accurately identify and solve problems during the commissioning process, demonstrating the effectiveness and usability of the tools. Conclusion The results show that automatic commissioning tools can improve the efficiency and quality of reactor protection system commissioning, and enhance the reliability and safety of the reactor protection system. At the same time, further research and improvement of automatic commissioning tools are still needed to meet the different commissioning needs of the reactor protection system.
2023, 10(6): 160-169.
doi: 10.16516/j.gedi.issn2095-8676.2023.06.019
Abstract:
Introduction With the emphasis and promotion of the electricity market system construction by the government, the electricity market is constantly growing towards a deeper and more unified direction. In order to promote the electricity market construction, the influence factors of the electricity market risk and its evaluation remain to be studied further. Method Based on the consideration of the whole cycle of electricity market trading, this paper took pre-trade risk, during-trade risk, and post-trade riskas the entry points, integrated the existing risks in each stage of electricity market, and established the risk evaluation index system for electricity market. Based on the thought of subjective and objective weighting, analytic hierarchy process (AHP) and entropy weight method were used to assign weights to the index system respectively, and fuzzy comprehensive evaluation (FCE) was adopted to evaluate the comprehensive risk level of the electricity market. Result The rationality, comprehensiveness and validity of the proposed model are verified through the analysis of the calculation examples of different electricity markets. Conclusion The model eatablished in this paper can conduct a comprehensive risk evaluation for the electricity market, and provide a theoretical reference for the construction of the risk system of the electricity market and its future development direction.
