摘要
离线安稳控制策略校核过程中,通常需要根据选定关键断面的不同功率水平生成大量运行方式,这一过程规范建模困难,目前只能以人工调节为主。为此,提出一种针对安稳控制策略校核的自动潮流场景生成算法。以安稳控制策略校核分析中生成运行方式的通用要求为约束,借鉴人工调整过程,设计包含局部有功功率调整、潮流不收敛处理、局部无功功率调整3个步骤的自动潮流场景生成算法。在调整局部有功功率时,根据关键断面位置选择关键发电机和参与调整的其他发电机,先调整关键发电机出力使关键断面功率满足需求,再调整其他发电机功率使区域功率平衡;在处理有功功率调整后潮流不收敛问题时,将关键断面一端节点设置为有功功率电压节点;在平衡无功功率时,根据电气距离选择关键断面附近的无功补偿器,实现就地补偿。开发了电力系统机电仿真软件(dynamic simulation program,DSP)的对应功能模块,在南方电网主网的实际安稳控制策略校核分析任务中验证了所提算法的有效性。
In the process of checking the offline safety and stability control strategy,it is often required to generate many operating scenarios according to different power levels on the key sections.But it is difficult to realize normative modeling for this process which is mainly relied on manual regulation.Therefore,this paper proposes an automatic generation algorithm for power flow scenarios for offline safety and stability control strategy check.Taking the general requirements for generating the operating scenarios as the constraints and learning from the manual regulation process,the automatic power flow scenario generation algorithm including three steps of local active power adjustment,power flow nonconvergence treatment and local reactive power adjustment is designed.When adjusting the local active power,the key generators and other generators for regulating are selected according to the critical section locations.The outputs of the key generators are adjusted to ensure the power on the key sections meet the requirements,and then the power of other generators are adjusted to balance the power of the control areas.To cope with the non-convergence cases,one end of the critical section is set as PV bus.When balancing the reactive power,local compensation is achieved by selecting the reactive compensator near the critical section according to the electrical distance.Finally,a corresponding functional module to the dynamic simulation program(DSP)is developed and the effectiveness of the proposed algorithm is verified in an actual offline study on safety and stability control strategy in the main grid of China southern power grid.
作者
邱建
朱思婷
李诗旸
杨欢欢
付超
张建新
朱泽翔
高琴
QIU Jian;ZHU Siting;LI Shiyang;YANG Huanhuan;FU Chao;ZHANG Jianxin;ZHU Zexiang;GAO Qin(CSG Power Dispatching Control Center,Guangzhou,Guangdong 510663,China;State Key Laboratory of HVDC,CSG Electric Power Research Institute Co.,Ltd.,Guangzhou,Guangdong 510663,China)
出处
《广东电力》
2023年第3期68-76,共9页
Guangdong Electric Power
基金
中国南方电网有限责任公司重点科技项目(ZDKJXM20190031)。
关键词
潮流场景生成
潮流收敛性提升
安稳控制策略校核
电力系统离线自动分析
power flow scenario generation
improvement of power flow convergence
validation of safety and stability control strategy
automatic offline study of power system
