省级电力现货市场全网安全校核

Research on Power Grid Security Check for Provincial Electricity Spot Market

分析了以省际交流联络线为等值负荷的市场优化出清模型和安全校核获得出清结果存在偏差的原因及影响,提出了基于区域全网模型的省级电力现货市场优化出清模型和全网安全校核方法。该方法基于全网的模型方式拼接生成未来时段拓扑断面,进行全网灵敏度计算,获取完整的全网灵敏度矩阵用于优化出清与全网安全校核迭代,获得准确的电网潮流和节点电价。实际系统算例验证了方法的准确性和有效性。

For the provincial electricity market model in which the inter-provincial AC tie-lines are equivalent to load injections,the clearing results obtained from the models of market optimization clearing and corresponding security check need to be improved.With regards to such modeling strategy,the causes and effects of the deviations in the clearing results are analyzed in this paper.Then the regional power grid model-based optimization clearing model of provincial electricity spot market and the security check method are proposed.By consolidating the models of the entire power grid to generate the topology interface of the future period,the full network sensitivities are calculated to obtain the complete network sensitivity matrix for market optimization clearing and full network security verification iterations,such that the accurate power flow and locational marginal price(LMP)of the power grid can be derived.The case studies based on the actual system has verified the accuracy and effectiveness of the proposed method.