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2025, Volume 12, Issue 2
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2025,
12(2)
Abstract:
2025,
12(2):
1-14.
doi: 10.16516/j.ceec.2024-334
Abstract:
Objective The implementation of carbon neutrality and carbon peaking policies has promoted the rapid development of wind power, a clean energy source. In recent years, extreme weather and climate events occur frequently, and with the large-scale production and grid connection of wind power, the issue of meteorological disasters in wind farms caused by extreme weather has become more prominent. Extreme weather not only poses severe challenges to wind power development, but may also affect the grid stability and reliability of power supply. Therefore, it is necessary to deeply understand the mechanism of how extreme weather affects wind power development, and take effective prevention and response measures to ensure the healthy and safe development of the wind power industry. Method By reviewing the recently published literature on meteorological disasters in wind farms, the paper classified the high-impact weather affecting wind power development into two major categories: extreme weather and adverse weather. It summarized the impacts of extreme weather such as typhoon, strong wind, lightning, rainstorm, sandstorm, cryogenic freezing and high temperature, as well as adverse weather such as calm breeze wind, salt spray and sea fog, on wind farm planning, resource assessment, survey and design, installation construction, infrastructure, wind power output and wind power prediction during the planning and design, construction and operation stage of wind farm. Result In the planning and design stage, it is necessary to identify and assess the risks of extreme weather, and carry out scientific macro and micro site selection. In the construction stage, rainstorm, cryogenic freezing and so on can affect transportation and delay the construction period; strong winds, heavy rain and so on affect hoisting and cause operational risks; sea fog, lightning and so on may affect the safety of offshore wind power construction. In the production and operation stage, extreme weather can lead to large-scale shutdown of wind farms and loss of output, and even threaten the safe and stable operation of the power grid. Except for tropical cyclones of a certain intensity, other high-impact weather events are not conducive to wind power output. The frequent occurrence of extreme weather leads to a reduction in the accuracy of wind power forecasting. Conclusion Finally, measures to cope with high-impact weather are proposed, including strengthening emergency management and extreme weather monitoring and early warning, considering the impact of extreme weather on wind power forecasting, and strengthening the construction of energy storage system.
2025,
12(2):
15-25.
doi: 10.16516/j.ceec.2024-301
Abstract:
Objective With the large-scale development and utilization of wind and solar energy resources, the impact of the construction and operation of wind farms and photovoltaic power plants on local climate has received widespread attention. The paper focuses on summarizing the research progress on the impact of wind farms and photovoltaic power plants on local climate, providing support for their scientific and reasonable planning and layout, as well as the sustainable development of wind and solar energy. Method The paper reviewed existing research results in this field and summarized the research methods, impact mechanisms, research processes and achievements on local climate effects of wind farms and photovoltaic power plants. Result Wind turbines operation causes local climate change as a momentum sink and turbulence source, which reduces the wind speed in the downwind direction on the one hand, and affects the exchange of energy and matter between land and air by changing the turbulent motion of the boundary layer on the other hand. Furthermore, the momentum, wind speed, sensible and latent heat fluxes in the near surface layer are changed directly and precipitation and cloud cover are changed indirectly. The construction of photovoltaic power plants has significantly changed the characteristics of the land surface and led to changes in the energy budget and distribution between land and air, the environmental temperature cooling effect and the heating effect exist simultaneously, which in turn produces feedback on the local climate system. The environmental temperature cooling effect is caused by physical obstruction, surface evaporation reducing and conversion of radiation energy into electrical energy. The heating effect is caused by the heat release of photovoltaic modules during the photoelectric conversion process and the weakening of nighttime radiation cooling on the surface. The integrated operation of wind and photovoltaic power may form a positive feedback mechanism of increased surface roughness/reduced albedo - increased precipitation - increased vegetation, leads to increased local climate change. Conclusion In the context of building a new power system with new energy as the main body, the construction of large-scale wind and photovoltaic bases with a focus on deserts, gobi and wasteland areas has become a top priority for the development of new energy in the 14th Five-Year Plan period. The research on its impact on the climate and environment needs to be continuously carried out.
2025,
12(2):
26-35.
doi: 10.16516/j.ceec.2024-358
Abstract:
Objective The analysis of limited icing capacity of wind turbine in cold wave weather is difficult to predict, resulting in inaccurate wind power prediction and insufficient decision-making basis for wind power dispatching. Method Through the prediction model of the limited icing capacity of wind turbine, the limited icing capacity of wind turbine in extreme cold wave weather process in Guangxi was analyzed and summarized by using conventional meteorological observation data, wind turbine shutdown actual data and numerical model data. Result The results show that the reference value and accuracy of icing prediction are effectively improved by integrating the numerical prediction products with the actual data of limited icing capacity and applying regression analysis for real-time correction. In addition, the icing prediction model can effectively respond to the strong cold air system southward affecting the Guangxi wind farm, but the response to the turning weather is insufficient, and the prediction result is larger than the actual data. At the same time, the numerical model prediction results have amplitude deviation and phase deviation, and the predicted value is larger than the actual value in this process. In terms of prediction effect, the model performs better in air temperature prediction than relative humidity and wind speed prediction, and the prediction effect of meteorological elements in high altitude areas is generally better than that in low altitude areas. Conclusion Based on the above conclusions, some suggestions are put forward, such as strengthening the early warning and prediction ability of cold wave, carrying out the upgrading and transformation of icing capacity prediction system, so as to improve the prediction accuracy of the limited icing capacity of wind turbine in extreme cold wave weather.
2025,
12(2):
36-47.
doi: 10.16516/j.ceec.2024-182
Abstract:
Objective The purpose is to reveal the ways, extents and differences in how electricity consumption across various regions in China is influenced by temperature changes. Method Data on monthly total social electricity consumption and corresponding average temperatures for 29 provinces municipalities and autonomous regions from 2008 to 2020 were collected. Monthly meteorological electricity consumption and relative meteorological electricity consumption were calculated for each province, along with trend coefficients and correlation coefficients with concurrent temperatures. National distribution maps of these parameters were drawn, and their spatial differences and possible causes were analyzed. Result The results show that: (1) With rising summer temperatures, meteorological electricity consumption shows an increasing trend, especially significant in the eastern regions, Chongqing, and Shaanxi, while it is not significant in western and northern regions (such as Xinjiang, Qinghai, Gansu and Heilongjiang). The trend coefficients of relative meteorological electricity consumption also vary significantly among regions with a significant relationship, with an average trend coefficient of 1.5%/℃ in the three northeastern provinces, reaching 5%/℃ in Central China and Eastern China (excluding Fujian), and about 3%/℃ in Guangxi, Chongqing and Shaanxi. (2) Winter temperature changes also have a certain relationship with electricity consumption in various regions of China. When winter temperatures decrease, electricity consumption shows an increasing trend, and a significant relationship is observed in most areas of China, except for the southern coastal regions and Guizhou, with an extremely significant relationship extending from the northeast and north China to the southwest region. The trend coefficients of relative meteorological electricity consumption range from −2.0%/℃ to −7.5%/℃. (3) Spatial correlation analysis shows that summer meteorological electricity consumption and the trend coefficients of relative meteorological electricity consumption are significantly positively correlated with temperature. For each 1℃ increase in temperature, both meteorological electricity consumption and relative meteorological electricity consumption show a significant increase, while in winter, the correlation is weakly negative. Conclusion These results have important reference value for energy demand forecasting, energy supply assurance, addressing climate change, achieving the carbon peaking and carbon neutrality goals.
Wind-Induced Vibration Response and Weak Locations of 110 kV Diverging Branch Rods Under Strong Wind
2025,
12(2):
48-57.
doi: 10.16516/j.ceec.2024-328
Abstract:
Objective The cross arms of the diverging branch rods are arranged perpendicularly, with cross-sectional dimensions varying linearly with height. Due to the complexity of structural modeling, corresponding structural analysis has not yet been conducted. Method To analyze the wind-induced vibration response and weak locations of diverging branch rods under strong wind conditions, a shell element finite element model was established to obtain its true mode shapes and a simplified beam element finite element model was proposed. Non-structural components were also addressed. The validity of the simplified model is verified by comparing mode shapes and frequencies. Dynamic response analysis under wind attack angles of 90°, 60°, 45°, and 0° were conducted to study the wind-induced vibration response and identify weak locations at various angles. Result The study shows that the mode shapes of diverging branch rods are primarily characterized by bending deformation, with negligible influence from torsion. Under a 90° wind reaction angle, the maximum wind-induced displacement at the top of the tower exceeds the relevant specified limits, and the stress at the base of the tower is the highest. Under a 45° wind reaction angle, the displacement at the top of the tower is the smallest, but the stress at the base is second only to that under a 90° wind reaction angle. The 90° wind reaction angle represents the most adverse condition. Conclusion The design control parameter for diverging branch rods is the displacement at the top of the tower. Additionally, the stress at the base of the tower is significant and poses a risk. Under different wind attack angles at a design wind speed of 29 m/s, the stability of the diverging branch rods meets the requirements, but the displacement at the top of the tower exceeds the limits. Existing diverging branch rods should be reinforced, while planned constructions can consider reducing span length or increasing cross-sectional area to avoid displacement exceeding limits.
2025,
12(2):
58-70.
doi: 10.16516/j.ceec.2024-276
Abstract:
Objective The renovation and upgrading of old wind farms through "replacing small with large", fully tapping into the value of existing wind and land resources, and improving the efficiency of existing wind farms, is an important guarantee for promoting the development of new energy and achieving the "3060" carbon peaking and carbon neutrality goals. Method This article provided an overview of the current status of wind farm renovation and upgrading, investigated the policy situation, conducted research and analysis on typical renovation and upgrading projects, and summarized the experience and existing problems of current progress. Result The national policies for the renovation and upgrading of old wind farms are clear, local policies are gradually being implemented, and the external environment is improving. The advanced experience of successfully renovated old wind farms includes actively communicating with regulatory authorities, fully benefiting from policy dividends, fully utilizing old wind farm equipment, effectively reducing construction costs, developing technical solutions tailored to local conditions, and achieving cost reduction. However, large-scale renovation and upgrading still face significant problems such as prominent new energy consumption issues, difficulty in capacity expansion and renovation, increased uncertainty in electricity prices, and incomplete asset recovery paths. Conclusion To further enhance the efficiency of the renovation and upgrading of old wind farms, the industry still need to focus on the applicability of policy to the boundary conditions of renovation projects, selection of wind turbines, optimal layout of wind farms, consideration of environmental benefits of renovation of old wind farms and selection of reasonable financial evaluation methods, among other key directions, to promote the healthy, green and efficient the renovation and upgrading of old wind farms.
2025,
12(2):
71-78.
doi: 10.16516/j.ceec.2023-235
Abstract:
Objective Wrinkle is a kind of defect that may occur in the manufacturing process of wind turbine blades. It may cause the strength of the blade to decrease, and in serious cases, cracks will be produced and lead to blade fracture, how to repair the wrinkle defects and verify the structural safety of the blade after repair is the focus of this paper. Method The blade of a megawatt-class unit of wind farm with spar cap wrinkling damage was selected as the research object. Firstly, the blade three-dimensional structural model and finite element model were established, and the blade buckling stability and the permissible number of spar cap were analyzed through finite element simulation; then, the wrinkle height was predicted through the strength loss ratio of glass fiber reinforced plastic (FRP), and a repair scheme was formulated; finally, the reliability of the repair scheme was verified through the full-size static and fatigue tests of the blade. Reslut The results show that the spar cap would not have buckling instability and fatigue failure if there is no wrinkling defect; the repaired blade passed the static and fatigue tests. Conclusion The repair scheme formulated based on the FRP strength loss ratio has a certain degree of reliability and provides a reference for the repair of wind turbine blade spar cap wrinkle.
2025,
12(2):
79-96.
doi: 10.16516/j.ceec.2024-311
Abstract:
Objective The paper takes the NREL-5MW wind turbine as the research object, adopts the control strategy based on the single and combination of the yaw angle(θ) of the upstream wind turbine and the tower height(ΔH) difference of the downstream wind turbine as well as the lateral spacing(Δy), researches the complex wake interference effect between the two wind turbines. Method Numerically simulated the part of the wake interfering phenomenon between the two wind turbines, analyzed the aerodynamic power of the two wind turbines, the average speed of the wake flow, and the effect of the wake interference to improve the power generation of the whole wind power field efficiency of the whole wind farm. Result The results show that the overall power of the wind turbine and its enhancement ratio are maximized when the combined strategy is implemented, especially when adjusting the lateral spacing Δy=4D or Δy=8D on the basis of θ=20°. Conclusion By changing the yaw angle of the upstream wind turbine or the upstream and downstream wind turbines staggered arrangement and other wake effect inhibition strategies, the power output of the upstream wind turbine is reduced and the effect of the wake of the upstream wind turbine is improved, which can improve the aerodynamic power output of the downstream wind turbine and the overall power generation of the wind turbine, and improve the power generation efficiency of the wind turbine in a relatively large scale, and provide a certain degree of numerical simulation for the optimization of the arrangement of large-scale wind farms support.
2025,
12(2):
97-103.
doi: 10.16516/j.ceec.2024-022
Abstract:
Objective In order to solve the problem of difficult operation and maintenance of offshore wind farms, the intelligent maintenance and repair platform is proposed. Method The platform was created by applying intelligent inspection (pressure station patrol robot, drone patrol), automatic intelligent maintenance (wind bolt fastening robot, wind turbine anti-corrosion spraying robot, maintenance decision-making), operation supervision (intelligent access control, visual helmet), intelligent operation and maintenance scheduling and training services. Result The problem can be solved with the shortage of offshore wind farm operation and maintenance resources, backward offshore wind power operation and maintenance technology, poor accessibility of offshore wind farms, high cost of offshore wind power operation and maintenance, lack of standards and specifications in the offshore wind power operation and maintenance industry, lack of professionals and other related operation and maintenance pain points. Taking the inspection of the main transformer at the offshore station and the anti-corrosion coating of wind turbines as examples, the two aspects are analyzed , including the intelligent inspection and maintenance decision table of the offshore station robot, as well as the specific scheme analysis of the anti-corrosion and rust removal robot for wind turbines. Conclusion Therefore, it can improve the intelligent level of operation and maintenance of offshore wind farms, reduce operation and maintenance costs, reduce costs and increases efficiency, and is expected to be applied and promoted in engineering.
2025,
12(2):
104-115.
doi: 10.16516/j.ceec.2024-177
Abstract:
Objective The heavy-duty truck swapping station addresses challenges such as long charging times and limited driving range in electric heavy-duty trucks, the power battery faces issues of large capacity, high frequency of use, and a heightened risk of thermal runaway. Method To solve the above problems, a coupled bidirectional charging machine's battery thermal-electric coupling model was established to investigate the thermal characteristics of the electric heavy-duty truck's power battery, and the COMSOL-SIMULINK was used for joint simulation. Result The results indicate that the proposed coupling model can effectively control the voltage and current of the battery under V2G operating conditions. In the early stages of the V2G condition, the maximum current density is at the junction of the positive electrode and the positive electrode tab. The temperature of the positive electrode tab is significantly higher than the cell temperature, with a temperature difference of 4.1 ℃.In the later stages of the V2G condition, the maximum local current density shifts from the electrode tab towards the bottom of the battery. The bottom region, influenced by concentration, favors electrochemical reactions, the cell temperature is higher than the electrode tab temperature. Under abusive thermal conditions, the sequence of secondary reactions includes the decomposition of the SEI membrane, negative electrode decomposition, and positive electrode reaction with the electrolyte.Among these reactions, the heat generated by electrode secondary reactions is the main cause leading the battery into irreversible thermal runaway. The decomposition reaction of the SEI membrane is an indicative sign of the initiation of thermal runaway in the battery. Conclusion The proposed external circuit thermoelectric coupling model can reflect the temperature distribution and thermal runaway effects of the battery thermoelectric coupling model under the excitation of the bidirectional charger in the heavy-duty truck exchange station.
2025,
12(2):
116-127.
doi: 10.16516/j.ceec.2024-271
Abstract:
Objective With the rapid increase in the number of electric vehicles (EVs), the impact of EV energy storage on the power grid has become increasingly significant. To enable dynamic interaction between EV charging stations and the grid, and to use EV energy storage to regulate load in order to reduce peak-valley differences and mitigate grid impacts, this paper proposes a control and scheduling strategy based on virtual synchronous technology, considering the integration of reactive power response into the new power system. Method Firstly, a day-ahead application mechanism was adopted, and a two-layer rolling optimization scheduling model was established to formulate charging plans for each charging station. Then, considering the working mode and characteristics of the V2G (Vehicle to Grid) system, an improved virtual synchronous control method was proposed. Under this control method, power can flow bidirectionally, and optimal power distribution was achieved through the V2G scheduling control strategy, thereby realizing both active and reactive power dispatch responses. Result Experimental results show that the proposed strategy effectively reduces the impact of EV charging and discharging on the power system, enhancing system stability. Additionally, by issuing upper-level scheduling instructions to the lower-level V2G converter controls, bidirectional interaction between charging stations and the grid can be well realized. Conclusion The combination of the upper-level scheduling strategy and lower-level converter control strategy not only meets the basic needs of the V2G system but also demonstrates excellent output characteristics. This control and scheduling strategy provides strong support for the stable operation of future power systems.
2025,
12(2):
128-133.
doi: 10.16516/j.ceec.2024-204
Abstract:
Objective During the operation and storage of lithium batteries, substantial heat is generated. Anomalies in temperature can impact the lifespan and cycling efficiency of lithium batteries, and in extreme cases, may lead to explosions. Therefore, research on thermal runaway warning for lithium batteries is crucial for ensuring their operational safety. Method The DTW-Kmeans algorithm was employed to identify anomalies in the temperature rise rate of lithium batteries. Subsequently, the physical characteristic of surface temperature decrease following the opening of the lithium battery safety valve was incorporated. A dual-feature fusion approach was utilized to propose a thermal runaway warning mechanism for lithium batteries. Result Repetitive experiments have validated the effectiveness of the proposed early warning algorithm in distinguishing abnormal lithium batteries based on temperature rise rates. Furthermore, it is capable of identifying the sudden change in temperature rise rates from positive to negative in abnormal lithium batteries, achieving a comprehensive recognition accuracy rate exceeding 90%. Conclusion The early warning algorithm is able to accurately identify lithium batteries with abnormal temperature rise rates, and can promptly and precisely detect the timing and location of the opening of the safety valve in the lithium battery. Consequently, this early warning algorithm serves as a preemptive measure against thermal runaway in lithium batteries, thereby safeguarding the safe operation of lithium-ion battery packs.
2025,
12(2):
134-144.
doi: 10.16516/j.ceec.2024-179
Abstract:
Objective With the depletion of fossil fuels and bio-fuels' emergence, ethanol-hydrogen hybrid fuel as a new generation of renewable clean fuel has attracted wide attention, so it is necessary to study the effect of ethanol-hydrogen premixed flame combustion characteristics. Method Based on the constant volume combustion system and combined with high-speed schlieren technology, the effects of the equivalent ratio and pressure on the laminar combustion characteristics of ethanol-hydrogen premixed flame were studied under the conditions of initial temperature of 370 K, hydrogen ratio of 50%, equivalent ratio of 0.7~1.4 and initial pressure of 1, 2 and 4 bar. Focusing on the propagation combustion characteristics of the flame, the laminar combustion velocity was calculated and its influencing factors were analyzed. The relevant reaction model was established with the help of Chemkin simulation platform, and the chemical dynamics of the laminar combustion characteristics were analyzed in detail by using Marinov's ethanol oxidation reaction mechanism. Result The results showed that the laminar combustion velocity was positively correlated with the adiabatic flame temperature and reached the maximum value around φ=1.1. The pressure significantly affects the net heat release rate, and the peak value occurs in the higher temperature region with a greater equivalent ratio. R1:H+O2⇔O+OH represents the most sensitive reaction which promotes the laminar combustion velocity of the flame. With the increase of pressure, the peak molar fraction of H, OH, and O free radicals gradually decreased and moved upstream. With the increase of the equivalent ratio, the molar fraction of H and O free radicals gradually decreased, and the molar fraction of OH free radicals first increased and then decreased. Conclusion The equivalent ratio, pressure and active free radicals have significant effects on the laminar combustion characteristics of ethanol-hydrogen premixed fuel, which can provide theoretical basis for subsequent studies.
2025,
12(2):
145-157.
doi: 10.16516/j.ceec.2024-173
Abstract:
Objective Small-scale compressed air energy storage systems are independent of specific geographic environments, have broad applicability, low construction and operating costs, and are suitable for distributed energy systems and microgrid applications. They offer continuous, stable power security for remote areas, islands, or temporary facilities. To enhance the efficiency of a small-scale compressed air energy storage system, the article analyzes the impact of operating the system under various conditions on its performance. Method A static model and a dynamic model of a small advanced compressed air energy storage system were established. Taking the 10 kW class energy storage system as a case study, the impact of compressor inlet temperature, compressor total pressure ratio, and the number of expansion stages on the thermal performance of the system was analyzed. Additionally, the dynamic variations in temperature and pressure of the storage tank were simulated based on Matlab simulation software. Result The results indicate that although higher compressor inlet temperature and overall pressure ratio reduce the energy storage efficiency of the system, they increase the energy storage density. The post-throttling pressure (inlet pressure of the expansion section) affects the energy storage density. Under design conditions, when the post-throttling pressure is 1.35 MPa, the energy storage density reaches a maximum value of 8.15 MJ/m3. When the energy storage pressure increases from 3 MPa to 6 MPa, the system's energy storage efficiency increases by 9.02%, and the energy storage density grows by 1.72 times. With increased heat exchange between the gas storage tank and the environment, the energy storage efficiency initially decreases and then increases. When the heat transfer coefficient is 5 W/m2/K, the system's energy storage efficiency reaches a minimum value of 45.98%. Conclusion For small adiabatic compressed air energy storage systems, increasing the storage pressure of the tanks and improving the heat exchange between the tanks and the environment can effectively enhance the energy storage density of the system. These findings offer valuable insights for the design and optimization of such systems.
2025,
12(2):
158-168.
doi: 10.16516/j.ceec.2024-281
Abstract:
Objective At present, the application of wireless power transmission technology on Unmanned Aerial Vehicle (UAV) is becoming a research hotspot, but the endurance of UAV remains one of the main bottlenecks in development. Method This paper proposed a wireless power transmission system with strong coupling capability and capable of realizing constant voltage output for small and medium-sized UAV. Compared with the current mainstream multi-rotor UAV wireless charging system, this design scheme utilized the underdamped resonance principle to realize high-frequency inversion through a single transistor, which replaced the full-bridge and half-bridge inverter with a more miniaturized and lightweight one. And it avoided the bridge arm direct conduction problem and improved the stability of the circuit. Meanwhile, the LCC-S/CLC compensation topology realized the constant current/constant voltage output based on the magnetic coupling resonant wireless power transmission system. The design of the magnetic coupler not only enhanced the coupling capability between the receiving side and the transmitting side of the coupling coil, but also reduced the number of turns of the coil on the receiving side, meeting the lightweight requirements of UAVs. Result Finally, a simulated UAV charging experimental platform with a rated power of 100 W is built with 25 V input, and the peak efficiency can reach 92%. Conclusion The simulation and experimental results verify the theoretical analysis and calculation and prove the feasibility of the wireless power transmission system based on a single-transistor inverter.
2025,
12(2):
169-180.
doi: 10.16516/j.ceec.2024-260
Abstract:
Objective With the steady advancement of nationwide electricity market reforms, regions like Guangdong and Shanxi have entered the formal operation phase of electricity spot markets. The frequent and unpredictable price fluctuation in the electricity spot market has significantly impacts or the annual revenue of power generation enterprises. This paper aims to deeply analyze the actual value of medium-and long-term contracts, provide scientific and reasonable pricing basis for electricity trading in these contracts, and thus reduce the market risks for power generation enterprises (especially new energy power generation enterprises) signing medium-and long-term contracts, while increasing their power generation income. Method This paper selected the Guangdong electricity spot market as a case study, thoroughly analyzing the current stage's congestion cost allocation mechanism and the settlement method of congestion costs in medium-and long-term contracts. Based on historical data, the paper conducted a value evaluation analysis of medium-and long-term contracts implementing separate settlement of medium-and long-term congestion costs. Additionally, for new energy power generation units with base electricity, the paper quantitatively analyzed the actual value of medium-and long-term contracts under current base electricity conditions, providing a basis and suggestions for the pricing of medium-and long-term contracts. Result Under the framework of separate settlement of medium-and long-term congestion costs, the value of medium-and long-term contracts for conventional power generation units mainly depends on the day-ahead unified settlement point price. For new energy power generation units, due to the influence of base electricity and other factors, the value of medium-and long-term contracts is also closely related to the node price and the output characteristics of the new energy. Conclusion The paper summarizes the value formulas for medium-and long-term contracts applicable to both conventional and new energy power generation units under the separate settlement of medium-and long-term congestion costs, and based on this, proposes pricing suggestions for medium-and long-term contracts. Providing clear valuation and pricing strategies for medium-and long-term contracts for the power generation side, particularly for new energy power generation units, this paper also offers crucial guidance for rule-makers in improving congestion management mechanisms.
2025,
12(2):
181-194.
doi: 10.16516/j.ceec.2024-401
Abstract:
Objective Under the "dual carbon" goals, the trading of environmental interest products, as an environmental management measure based on the market mechanism, is crucial for promoting sustainable development. However, the concepts of domestic electricity-carbon environmental interest products have not been standardized and unified, and their related theories, policies and market mechanism designs also need to be improved. Therefore, this article conducts a comprehensive review and analysis on the development status, value verification, and existing problems of typical environmental interest products, and puts forward relevant suggestions for improving China's environmental interest product trading system. Method First, focusing on typical environmental interest products such as green certificates, green electricity, carbon quota, and Chinese Certified Emission Reduction (CCER), the development status of the markets where these interest products are located, and sort out their policy evolutions, market scales and other situations. Second, conduct a comparative analysis of the ways to define the environmental value of new energy at home and abroad, summarize the four ways of verifying the value of China's current environmental interest products, and then put forward the design of the coupling mechanism for the future electricity, carbon and certificate markets. Finally, deeply discuss the key problems faced by the trading of environmental interest products, including decentralized product management, low environmental premium, and low international recognition. Result Presenting targeted suggestions for the above problems, such as promoting the construction of the electricity-carbon-certificate market linkage mechanism, standardizing the environmental value definition standards, and improving the international recognition of green certificates. Conclusion This article reviews the development status and trading mechanisms of typical environmental interest product markets, uncovers a series of problems currently faced by the markets, and needs to put forward policy suggestions from aspects such as market mechanisms, product values, and the international environment, so as to improve China's environmental interest product trading system, thereby enhancing the efficiency of environmental resource allocation, and finally helping the economy and the environment achieve a good situation of coordinated development.
