区域新能源并网暂态功角稳定分析与紧急控制策略优化  

Trainsient Power Angle Stability Analysis of Regional New Energy Integration and Coordinated Control Strategy

作　　者：张建新[1] 刘宇明 邱建[1] 刘梓宁 杨欢欢 付超 李诗旸 朱泽翔 毛振宇 ZHANG Jianxin;LIU Yuming;QIU Jian;LIU Zining;YANG Huanhuan;FU Chao;LI Shiyang;ZHU Zexiang;MAO Zhenyu(Power Dispatching and Control Center,CSG,Guangzhou 510663,China;Electric Power Research Institute,CSG,Guangzhou 510663,China)

机构地区：[1]中国南方电网电力调度控制中心,广州510663 [2]南方电网科学研究院,广州510663

出　　处：《南方电网技术》2024年第7期129-138,共10页Southern Power System Technology

基　　金：国家自然科学基金集成项目(U22B600010)。

摘　　要：随着新型电力系统发展和新能源机组不断投产,南方区域将形成多区域新能源与邻近常规电源联合集中接入系统的场景。新能源集中接入常与常规电源共用输电通道,将影响区域系统暂态稳定特性及输送通道的传输能力,使南方区域系统的安全稳定运行和风险防控面临了前所未有的挑战。为深入研究区域新能源送出的稳定特性建立了区域新能源交流集中送出的等值系统模型,分析了新能源并入对区域系统对暂态稳定特性影响的主要机理。基于等面积法则对区域送出系统暂态过程的加、减速面积进行了定量分析,提出了紧急控制切机策略的协调优化方法,实现区域送出传统机组与新能源机组紧急控制切机量及控制代价的最小化的切机策略配置。最终,基于广东区域海风火电打捆送出系统为例,对分析结果的正确性进行了验证。With the development of new power systems and the continuous production of new energy generation units,the southern region will form a scenario of multi regional new energy and adjacent conventional power sources jointly connected to the system.The centralized access of renewable generation often shares transmission channels with conventional power sources,which will affect the transient stability characteristics of regional systems and the transmission capacity of transmission channels,posing unprecedented challenges to the safe and stable operation and risk prevention of southern regional systems.An equivalent system model for regional renewable generation transmission system is established to deeply study the stable characteristics of regional new energy transmission.The main mechanism of the impact of renewable generation integration on the transient stability characteristics of regional systems is analyzed.A quantitative analysis is conducted on the acceleration and deceleration areas of the transient process of the regional transmission system based on the equal area rule.A coordinated optimization method for emergency control shutdown strategy is proposed to achieve the minimization of emergency control shutdown quantity and control cost for traditional and renewable generation units in the regional transmission system.Finally,based on the example of the Guangdong regional wind-thermalcombined power transmission system,the correctness of the analysis results is verified.

关 键 词：新能源集中送出 暂态功角稳定性 紧急控制策略 协调优化 

分 类 号：TM743[电气工程—电力系统及自动化]