市场环境下的区域电网安全校核方法

Security Checking Method of Regional Power Grid under Market Environment

摘要:

省级电力现货市场的安全校核一般采用边界等值的模式，不能保证联络线各支路未来潮流的准确性，因此需要进行区域电网的安全校核和校正。为此，文中设计了一种考虑省级电力市场运营的区域电网校核方案：首先，各省基于联络线初始计划进行初次出清，并把出清结果上报区域调度；其次，进行区域整体安全校核，获得准确的设备越限结果，通过反向等量配对调整建立越限约束和机组的相关性，并生成各省现货市场对应的区域越限安全约束集；最后，下发区域越限安全约束集到相应省份，各省考虑区域关键安全约束集重新出清，协调至区域电网满足安全约束。所提出方法通过电网算例进行了验证。

Abstract:

The security check of provincial power spot market generally adopts the boundary equivalent mode, which can not guarantee the accuracy of future power flow of each member of tie -line, so it is necessary to carry out the security check and correction of regional power grid. Therefore, a regional power grid check scheme considering provincial electricity market operation is designed. Firstly, based on the initial tie -line schedule, each province carries out the initial clearing and reports the clearing result to the regional dispatching. Secondly, the overall regional security check is carried out to obtain the accurate power overrun results, and the correlations between the violated security constraints and the units are established through equal and opposite quantities in pair. Finally, the violated regional security constraint sets are distributed to the corresponding provinces, and provincial electricity markets are cleared again. The proposed method is verified by a power grid example.