摘要
负荷密集型城市电网在极端严重故障下可能发生频率、电压崩溃的风险。采用基于轨迹的时域动态仿真方法,分析深圳电网现有低频低压减载措施存在的问题。在考虑局部地区孤网后低频低压减载方案与全网低频低压减载方案相互协调配合的基础上,提出既满足全网频率特性要求又适应局部负荷密集型城市电网频率要求的低频低压减载优化方案。仿真结果验证了所提配合原则的合理性和配置方案的可行性。
Frequency and voltage collapse caused by serious failure is a tremendous risk in density urban power network. Trajectory-based time-domain dynamic simulation method is used to analyze the problems of the configuration of under frequency load shedding and under voltage tripping of Shenzhen power system while islanded from the interconnected power system. A scheme for under frequency generator tripping is proposed based on frequency control coordination and optimization to meet both the frequency characteristic requirements of the whole network and regional networks. Simulation results show that the propesed coordination principle and configuration scheme are reasonable and feasible.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2016年第24期159-163,共5页
Power System Protection and Control
