Startup Method and Strategy for Bipolar LCC-HVDC System Used as Black-Start Power Source
The scientific and reasonable black-start scheme is the most effective measure to cope with the power grid blackout, which can greatly accelerate the system recovery process, thus significantly reducing the losses of power system due to power failure. The bipolar LCC-HVDC system has the advantages o...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
State Grid Energy Research Institute
2024-04-01
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| Series: | Zhongguo dianli |
| Subjects: | |
| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202307082 |
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| Summary: | The scientific and reasonable black-start scheme is the most effective measure to cope with the power grid blackout, which can greatly accelerate the system recovery process, thus significantly reducing the losses of power system due to power failure. The bipolar LCC-HVDC system has the advantages of flexible regulation and large transmission capacity, while it has some difficulties as a black start source. This paper presents a new black start method for bipolar LCC-HVDC system used as the black start power source to restore the power supply of the passive receiving-end network, so as to speed up the the recovery process. Firstly, the problems for using bipolar LCC-HVDC system as a black start source and the corresponding addressing measures are presented. And then, the implementation processes for using the bipolar LCC-HVDC system as a black start power source to restore the power supply of the passive receiving-end network are presented in detail. The process includes two stages: the first stage realizes the pseudo-deicer mode startup of the bipolar LCC-HVDC system; the second stage realizes the transition from the pseudo-deicer mode to the restoration of power supply of the passive receiving-end network. The case study verified the effectiveness and validity of the proposed method. This method makes the bipolar LCC-HVDC system have the black-start capability, and utilizes the DC system to provide voltage and frequency support for system restoration of the receiving-end power grid. |
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| ISSN: | 1004-9649 |