云广直流小功率孤岛试验发现的问题及应对措施  

The Problems Occurred During the Test of Islanded Operation of Yunnan Guangdong DC System with Low Power and Measures to Deal With

作　　者：刘洪涛[1] 李建设[1] 黄河[1] 洪潮 苏寅生[1] 周剑[1] 钟智[3] 徐光虎[1] 马骞[1] 林庆标[1] 

机构地区：[1]中国南方电网电力调度控制中心,广州510623 [2]南方电网科学研究院,广州510080 [3]华能澜沧江水电有限公司小湾电厂,云南大理675705

出　　处：《南方电网技术》2012年第2期40-42,共3页Southern Power System Technology

摘　　要：云广直流孤岛方式运行是提高云南水电外送能力和保证南方电网安全稳定运行的重要措施。总结了云广直流带小功率孤岛试验中发现的主要问题及应对措施,诸如小湾电厂机组调速器不完全适应孤岛方式,直流闭锁后机组频率从最高频率下降至50 Hz时间较长,孤岛模式转联网模式过程小湾电厂机组有功功率波动较大等。这些问题的解决大大减小了后续大功率孤岛试验的风险。To operate Yunnan Guangdong DC system in an islanded mode is an important measure to improve Yunnan hydropower delivery capability and to ensure the safe and stable operation of China Southern Power Grid（CSG）.This paper summarizes the problems and related meansures during the test of islanded operation of the DC system with low power,such as the governor of Xiaowan generators being unsuitalbe to the islanded operation,too long time for the frequency to decrease to 50 Hz after bipolar block of the DC system,the Xiaowan plant’s active powrer fluctuating obviously in the mode change from the islanded operation to integrated operation etc.These problems are sucessfully treated with the proposed measures,and thus lowering the risk of the following test with high power.

关 键 词：云广直流系统 特高压 孤岛运行 

分 类 号：TM721.1[电气工程—电力系统及自动化]