铁路电力贯通线长距离输电补偿方案研究

铁路电力贯通线长距离输电存在一系列问题,如在线路轻载时末端电压升高,重载时末端电压下降,严重情况下末端电压将超出允许范围,严重影响供电的可靠性和安全性,影响行车安全。对临河至策克铁路互做布其35k V变电所与额济纳35k V变电所间超长距离贯通线进行分析,提出并联电抗和串联电容相结合的补偿方案,建立仿真模型,分别对集中补偿方案和分散补偿方案的有效性进行验证。结果表明:提出的补偿方案能够很好地解决铁路电力贯通线长距离输电时存在的问题。

Research on Long-distance Transmission Compensation Scheme for High-voltage Power Line along the Railway

There are a series of problems in the long-distance transmission of power transmission lines.For example,the terminal voltage increases when the load is low,while the terminal voltage drops when the load is high. This seriously affects the reliability and security of the power supply and traffic safety.This paper analyzes the super long-distance high-voltage power line along the railway of Linhe-Ceke between Huzuobuqi 35 k V transformer substation and Ejina 35 k V transformer substation and proposes a compensation scheme combining the parallel reactance and the series capacitor. A simulation model is established to verify respectively the effectiveness of the centralized compensation scheme and the decentralized compensation scheme. The results show that the compensation scheme proposed in this paper can better solve the problem of long-distance transmission.