基于WAMS的发电机组动态无功控制策略  

Dynamic Reactive Power Control Strategy of Generators Based on WAMS

作　　者：唐景星 孙闻 李晓明[2] 付聪 黄大为[2] 

机构地区：[1]广东电网有限责任公司电力科学研究院,广州510080 [2]东北电力大学电气工程学院,吉林吉林132012

出　　处：《南方电网技术》2015年第7期82-87,共6页Southern Power System Technology

摘　　要：为改善系统故障后存在的母线电压延迟恢复问题,建立了基于积分映射的动态电压/无功灵敏度模型,提出了一种基于广域测量系统(WAMS)的发电机组励磁控制策略。该策略通过对关键发电机组实施励磁控制,提升故障下发电机组的动态无功输出,为母线电压跌落提供电压支撑。基于该控制策略,利用PSD-BPA对2014年广东电网丰大极限方式下存在的母线电压延迟恢复问题进行了仿真分析,结果表明,该策略能够有效缩短关键母线电压的恢复时间,提升系统动态电压稳定性。To improve delayed voltage recovery after system fault,a dynamic voltage / reactive power sensitivity model based on integral mapping is set up and a generator excitation control strategy based on WAMS is presented in this paper. It provides voltage supporting after voltage drop by increasing the reactive power output by implementing excitation control to the generator units. According to this control strategy,the problem of delayed voltage recovery of Guangdong grid in 2014 ultimate operation model is analyzed by using PSD-BPA,and simulation results showthat the strategy is effective to shorten the voltage recovery time and improve the dynamic voltage stability of power system.

关 键 词：电压延迟恢复 电压/无功灵敏度 广域测量系统 励磁控制 动态电压稳定 

分 类 号：TM621.3[电气工程—电力系统及自动化] TM743