肥西变电站220kV母线短路电流越限解决方案的研究

随着安徽电网规模的不断扩大,500 kV肥西变电站即将出现短路电流越限的问题,应及时研究其解决方案。比较电网解环、在变压器中性点加装小电抗及220 kV母线分裂运行等措施限制短路电流的效果,结合对电网的影响及适应性,推荐采取肥西变电站220 kV母线分裂运行的方案。

Study of resolving scheme for short-circuit current exceeding limit of the 220 kV busbars of Feixi substation

The capacity of Anhui Power Grid expands continuously, 500 kV Feixi station comes forth the question of short-circuit current exceeding limit, the resolving scheme should be studied in time. This paper presents grid disengaged loop, installing small reactors on neutral points of transformers and 220 kV husbars split operation , compares the impacts of restricting short-circuit current, combining the effects and flexibility of these schemes for power grid, the 220 kV busbars of Feixi substation spliting is recommended ultimately.