CAJ | 학술논문

为提高山东电网应对大面积停电应急处置能力，验证山东电网基于500 kV网架黑启动方案的可行性，建立由抽水蓄能机组远距离黑启动600 MW 大型火电机组的山东电网黑启动模式。在试验过程中，当泰山站对邹泰线送电约2 s时，抽水蓄能电站1号机组跳闸。通过EMTP/ATP软件建模和分析，发现邹泰线合闸操作过电压激发了系统在自振频率上的线性谐振，使系统电压二次谐波分量迅速增长，最终导致试验失败。电网黑启动应充分考虑系统过电压带来的影响，特别是对远离发电机组的空长线，由于等值电源内阻较大，易激发系统在其自振频率上的线性谐振。同时，提出带线路零起升压的黑启动防谐振方式。
위제고산동전망응대대면적정전응급처치능력，험증산동전망기우500 kV망가흑계동방안적가행성，건립유추수축능궤조원거리흑계동600 MW 대형화전궤조적산동전망흑계동모식。재시험과정중，당태산참대추태선송전약2 s시，추수축능전참1호궤조도갑。통과EMTP/ATP연건건모화분석，발현추태선합갑조작과전압격발료계통재자진빈솔상적선성해진，사계통전압이차해파분량신속증장，최종도치시험실패。전망흑계동응충분고필계통과전압대래적영향，특별시대원리발전궤조적공장선，유우등치전원내조교대，역격발계통재기자진빈솔상적선성해진。동시，제출대선로령기승압적흑계동방해진방식。
To improve the emergency response capacity of coping with blackouts and to validate the feasibility of 500kV backbone network based black start scheme for Shandong power grid, a black start scheme for Shandong power grid, which implemented the remote black start of a 600MW thermal generating unit by pumped-storage unit, was established. During the test, after about two seconds since the Taishan pumped storage power station supplied power to 500kV Zoutai transmission line, the N0. 1 unit of Taishan pumped storage power station tripped out and the black start test was failed. Through simulation analysis by EMTP/ATP, it is discovered that the linear resonance at natural frequency of power system was excited by the overvoltage due to switching on the Zoutai transmission line, and it made the second harmonic component in system voltage increasing rapidly, and finally leaded to the test failed. The failed test shows that for the black start special attention should be paid to the impact of system overvoltage, especially for the unloaded long transmission line far from the generation unit the linear resonance at natural frequency of power system is easy to be excited by the higher internal resistance of equivalent source. In addition, an anti-resonant way for the black start via non-energized transmission line is put forward.