摘要
随着大规模新能源并入强耦合的互联电力系统(interconnected power system,IPS),传统的自动发电控制(automatic generation control,AGC)策略使得全网AGC调节成本不断增加以及区域间AGC调节容量分布不均,这将严重威胁互联系统的频率稳定。多区域AGC联合调频,是解决该问题的有效手段。为实现AGC最优联合调频控制,该文研究了多区域AGC最优联合调频模型与区域调节边际成本(area regulation marginal cost,ARMC)之间的关系。在考虑联络线支援约束的情况下,提出一种新的基于ARMC的多区域AGC最优联合调频控制策略。采用线性理论,结合改进的互联系统动态模型,证明所提控制策略的稳定性和最优性,确定控制参数的取值范围。3区域互联系统仿真算例表明,与其他联合调频控制策略相比,基于ARMC的协调机制深刻揭示了多区域AGC之间的协调合作机理。在保证联络线支援安全性的前提下,能达到更好的频率控制效果以及更优的经济性。
With large amount of renewable energy resources integrated into strong coupling interconnected power system（IPS）, the conventional automatic generation control（AGC） strategy leads to the increase of the AGC regulation cost and the uneven distribution of the AGC regulation amount. This is a serious threat to the frequency stability of the IPS. Cooperation of AGC in different control areas is an effective way to solve this problem. In order to achieve the optimal coordination of multi-area AGC, the relationship between the optimal coordination frequency control model of multi-area AGC and area regulation marginal cost（ARMC） of different AGC was studied. Based on this, considering the fluctuation constraint of tie-line support, an optimal coordination frequency control scheme of AGC based on ARMC was proposed. By linear theory and the improved dynamic model of IPS, the proposed strategy had been proved to be stable and optimal and the range of control parameters was determined. The simulation results of a 3-area system showed that, the control scheme based on ARMC revealed the coordination mechanism of multi-area AGC. Besides, it is more effective for frequency and more economic comparing with other control strategies while keeping the safety of tie-lines.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2017年第3期676-684,共9页
Proceedings of the CSEE
基金
国家重点研发计划(2016YFB0900100)
国家自然科学基金项目(51407104)~~
关键词
自动发电控制
互联系统
区域调节边际成本
最优联合调频控制策略
联络线约束
automatic generation control
interconnected power system
area regulation marginal cost
optimal cooperation frequency control strategy
tie-line constraint
