摘要
为改善故障后电网电压的恢复,本文对机组无功出力对关键母线电压恢复的影响展开研究。首先分析了电网故障存在电压恢复问题的原因以及发电机在电压恢复过程的作用,建立了机组的动态电压无功灵敏度模型,并利用该模型提出一种评估故障后励磁机组对关键母线电压恢复贡献的方法。最后在2013年广东电网丰大极限方式下,对电网所存在的电压延迟恢复问题进行仿真计算。结果表明,本文提出的方法对缩短关键母线电压恢复时间有参考意义。
In order to improve the recovery of power grid voltage after fault,this paper studies the effect of reactive power output on the recovery of critical bus voltage. First,this paper analyzes the reason of delayed voltage recovery after the fault,and the effects of a generator on the voltage recovery process. Then,based on the construction of a dynamic voltage reactive power sensitivity model,a method for evaluating the contribution of excitation generator to the critical bus voltage is proposed. Finally,the delayed voltage recovery of Guangdong power grid in 2013 under the ultimate condition is simulated. The results show that the method proposed in this paper can provide reference for reducing the recovery time of critical bus voltage.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2016年第10期42-46,54,共6页
Proceedings of the CSU-EPSA
基金
广东电网有限责任公司科技项目(K-GD2014-0518)
关键词
关键母线
积分映射
动态电压/无功
灵敏度
电压延迟恢复
key bus
integral mapping
dynamic voltage/reactive power
sensitivity
delayed voltage recovery
