论文部分内容阅读
智能软开关(soft normally open point,SNOP)是一种代替传统联络开关可进行实时功率控制的电力电子装置,在正常运行时主要提供有功功率的传输,当电压问题突出时,SNOP可进行电压无功控制。为此,首先建立了SNOP电压无功控制问题的时序模型,该模型数学上属于大规模非线性规划问题,给计算求解带来较大的挑战;通过采用凸松弛技术将其转化为二阶锥模型,实现该问题的快速、准确求解;最后,采用IEEE 33节点算例,对所提出的优化模型与求解方法进行了分析与验证。结果表明,利用SNOP在有源配电网中进行电压无功控制,可以有效地缓解电压波动、降低系统损耗;基于二阶锥规划的求解方法在保证求解最优性的同时,极大地提高了计算效率。
Soft normally open point (SNOP) is a power electronic device that replaces the traditional contact switch for real-time power control and mainly provides active power transmission during normal operation. When the voltage problem is prominent, the SNOP can perform voltage-free Power control. To this end, a time series model of SNOP voltage reactive power control problem is first established. The model is mathematically a large scale nonlinear programming problem, which poses a big challenge to the computational solution. By using convex relaxation relaxation technique, Model to solve the problem quickly and accurately. Finally, the IEEE 33-bus example is used to analyze and verify the proposed optimization model and solution method. The results show that using SNOP to control voltage and reactive power in the active distribution network can effectively reduce the voltage fluctuation and reduce the system loss. The solution based on the second-order cone scheme can greatly improve the optimality of the solution Computational efficiency.