高压串联电抗器独立子站应用研究
Application Research on Independent High-Voltage Series Reactor Station
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摘要:
随着电力系统规模不断扩大，电网短路电流问题日益突出。通过在电网线路上加装高压串联电抗器可以有效降低近区电网短路电流，现有技术中的串联电抗器均布置在变电站侧，前提是变电站外围有可用征地，若变电站外围无可用征地，布置就成了问题。本文针对变电站外围无可用征地的情况，首次提出了一种独立子站的技术方案，该方案可以简化一次设计、站用电设计、二次设计和通信设计，减少投资和占地，并已成功应用于已投产工程，具有较高的参考价值。电网加装串联电抗器项目多为后期扩建，如果已投产变电站的外围无可用征地，本文提出的独立子站方案能够很好的解决串联电抗器的布置问题。 Abstract:As the power system grows larger and larger, the short-circuit current is becoming a prominent problem. The fault current can be reduced by adding high-voltage series reactors in the system. High voltage series reactor can be arranged by the side of the substation on condition that space is available, otherwise it is a problem. This paper focuses on the condition when space is limited by the side of substation and carries out a scheme of setting an independent series reactor station in the power grid. The scheme can simplify the primary design, auxiliary power system design, secondary circuit design and communication design, and reduce investment and occupation. The scheme has been applied in projects. Most series reactors are added after the construction of substations. If space is limited, the independent series reactor station scheme can be a viable solution towards the problem.
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