刘红政,樊艳芳.特高压双直流送端电网直流闭锁故障稳控措施研究[J].电测与仪表,2018,55(17):107-113. LIU Hongzheng,FAN Yanfang.Research of stability control strategies for UHV Double DC sending grid occur DC blocking fault[J].Electrical Measurement & Instrumentation,2018,55(17):107-113.
特高压双直流送端电网直流闭锁故障稳控措施研究
Research of stability control strategies for UHV Double DC sending grid occur DC blocking fault
Based on the Xinjiang Power Grid Planning grid structure in 2017, Zhundong-Chongqing ± 1100kV HVDC will serve as the second delivery channel DC second access to the Xinjiang sending-end grid. In order to guarantying the security and stability of the Xinjiang sending-end grid, When Hazheng ± 800kV DC blocking fault, put forward considering the ± 1100kV emergency DC power supply, the sending-end grid of thermal power , analysis of different stability control measures of influence for containing double DC voltage of the sending-end grid. The paper results illustrate that under the premise of stable operation of Xinjiang sending-end grid, the steady control and DC power supply can effectively reduce the power cut of the power supply network, and balance the reactive power after DC fault. The stability control measures have certain reference value to improve the voltage stability of the Double DC sending-end grid and to optimize the control of the unbalance cutting power.
