计及备用风险性的新型电力系统源网协同安全经济调度

为合理利用源侧备用资源，提出基于随机潮流和半不变量法的备用风险评估指标，以准确量化因备用不足而造成的潮流越限风险；为了实现源侧备用资源和网侧可控资源的协同优化，将网侧有载调压变压器和电容器组无功补偿装置纳入决策变量，以系统运行成本最低和系统运行越限风险指标值最小为优化目标，构建计及备用风险性的新型电力系统源网协同安全经济调度模型；将布朗运动和莱维飞行随机游走机制融入多目标微分进化算法，设计新型的布朗-莱维多目标微分进化算法，对模型进行高效求解。算例分析结果验证了所提方法的有效性和优越性。

Source-grid coordination security and economic dispatching of new power system considering reserve risk

In order to rationally use the reserve resources at the source side, a reserve risk assessment index based on stochastic power flow and semi-invariant method is proposed to accurately quantify the power flow over-limit risk caused by insufficient reserve. In order to realize the cooperative optimization of reserve resources at the source side and the controllable resources at the network side, the on-load tap changer and reactive power compensation device at the network side are included into the decision variables, and a source-grid coordination security and economic dispatching model of new power system considering reserve risk is constructed, which takes the minimum system operating cost and the minimum system operating over-limit risk index value as the optimal objects. Brownian motion and Levy flight random walk mechanism are integrated into the multi-objective differential evolution algorithm, and a novel Brownian-Levy multi-objective differential evolution algorithm is designed to efficiently solve the model. The effectiveness and superiority of the proposed method are verified by an example analysis.