含分布电源配电网多时段线性化二阶锥松弛算法研究

针对分布式电源接入配电网影响系统电压分布和潮流分析、造成系统电能质量下降的问题，建立系统优化模型，对系统电压、潮流进行分析与优化，提出含分布式电源的配电网多时段线性化二阶锥松弛优化算法。对分布式电源接入的配电网进行潮流分析，建立分布式配电网最优潮流优化模型;对分布式配电网潮流优化模型进行简化处理，针对潮流分析中非凸非线性，提出多时段二阶锥松弛优化算法;针对电容器组、有载调压变压器的非凸非线性问题，进行分段线性化处理。仿真结果表明，提出的算法能合理调度有载调压变压器、电容器组和分布电源的出力，有效降低网损，减小电网电压偏差。

Research on second-order cone relaxation algorithm for multi-time linearization of distribution networks with distributed power sources

To address the issue of degraded power quality in the system caused by the integration of distributed power generation into the distribution network, a system optimization model is proposed. This model aims to analyze and optimize system voltage and tidal current. It introduces a linearized second-order cone relaxation optimization algorithm tailored for distribution networks with distributed power sources. The model includes power flow analysis of the distribution network connected to distributed power generation, leading to the establishment of a distributed distribution network tidal optimization model. The distributed distribution network tidal optimization model is simplified, and a multi-time second-order cone relaxation optimization algorithm is introduced to address non-convex nonlinearities in tidal analysis, and segmental linearization is applied to handle the non-convex nonlinearity of capacitor banks and on-load regulator transformers. Simulation results demonstrate that the proposed algorithm can reasonably dispatch the output of on-load regulating transformers, capacitor banks and distributed power sources, resulting in reduced network loss and the voltage deviation in the grid.