A Kind of Key-transfer Interlock Device Using in Power Stations & Distribution Networks in Place of the Computer-based Five-preclusion Interlocks System
doi: 10.16516/j.gedi.issn2095-8676.2017.S1.026
- Received Date: 2016-06-27
- Publish Date: 2020-07-18
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Key words:
- module selection /
- computer-based five-preclusion interlocks system /
- key-replacement interlock system /
- distribution networks
Abstract: There are two types of five-preclusion interlocks in power system at home and abroad. Almost all other countries except China are using key-transfer type of five-preclusion interlocks. Being fully understanded the actual situation of the two five-preclusion interlocks and model selection has been our focus. In this investigation we listed essential shortcomings of microcomputer based on five-preclusion interlocks, introduced the working principle of two kinds of five-preclusion interlocks, pointed out that the key-transfer type five-preclusion interlocks have the characteristics of simple structure, clear logic, non-electronic components, completely maintenance free, which have been using in all domestic nuclear power plants, all pumped storage power stations and representing the trend and development direction of five-preclusion interlocks technology. We also listed examples of installation key-replacement type five-preclusion interlocks. The results show that the key transfer five-preclusion interlocks is obviously better than computer-based five-preclusion interlocks for power distribution network and power plant.This work provides some guidance for selection of any five-preclusion interlocks.
Citation: | YU Guangming. A Kind of Key-transfer Interlock Device Using in Power Stations & Distribution Networks in Place of the Computer-based Five-preclusion Interlocks System[J]. SOUTHERN ENERGY CONSTRUCTION, 2017, 4(S1): 137-142. doi: 10.16516/j.gedi.issn2095-8676.2017.S1.026 |