【摘要】 针对交直流混合配电网优化调度中控制变量多样化的趋势,以网损费用和弃光费用之和最小作为目标函数,综合考虑分布式电源、储能装置、电压源换流器、电容器组和静止无功补偿装置等控制变量集合,建立交直流混合主动配电网有功-无功多时段协同优化新模型,解决电压越限问题,实现功率快速补偿。针对变量维数增加引起的模型最优解精确性问题,采用二阶锥规划对非凸非线性问题松弛凸化,利用Cplex算法求得模型最优解。最后,通过拓展的49节点系统算例测试结果验证所提模型的有效性。更多还原

【Abstract】 In the light of the trend towards the diversification of control variables in optimal dispatching of AC/DC hybrid distribution network,the paper takes the minimum sum of net loss cost and photovoltaic power curtailment cost as the objective function,establishes a new model of active and reactive power multi-period collaborative optimization for AC/DC hybrid active distribution network to solve voltage over-limit problem by considering the set of control variables such as distributed generation,energy storage device,voltage source converter,capacitor bank and static var compensator,and implements fast power compensation. Aiming at the problem of optimal solution accuracy of the model caused by an increase in variable dimension,the paper uses second-order cone programming to implement the relaxation and convexification of non-convex nonlinear problem,and uses Cplex algorithm to obtain the optimal solution of the model. Finally,the effectiveness of the proposed model is verified by the extended 49-node system test results.更多还原