In order to smooth out the volatility of distributed power sources after grid connection and optimize the operation and management of the distribution network after grid connection. A two-stage coordinated and optimized operation strategy of active and reactive power was proposed for a new type of power system under source-grid-load-storage interaction. Along with research on distributed power source siting and capacity determination. The first stage adjusts the ratio of on-load regulator transformer and shunt capacitor bank, with network loss and voltage deviation were taken as the optimization targets. The second stage adjusts the static reactive power compensator and photovoltaic inverter, the target is the fluctuation of active power at the photovoltaic grid-connected point and the minimum voltage deviation at the grid-connected point. The two stages carry out information transfer through iterative coordination and feedback methods, combined with uniform network theory and improved multi-objective cyclic small habitat particle swarm optimization algorithm, and verified by simulation on the IEEE33 node system, which shows that the voltage quality lifting and network loss reduction as well as suppression of PV fluctuation have obvious effects. Finally, the study investigates distributed power source siting and capacity determination, further illustrating the enhanced algorithm’s versatility.
GAO Shu-ping, ZHANG Jing-xing, SONG Guo-bing, ZHOU Jin-yu, ZHOU Yong-ning.
Two-stage Active-reactive Power Coordination Optimization of Source-network-load-storage Interaction under New Type of Power System[J].
Science Technology and Engineering, 2026, 26(10): 4212-4223 DOI:10.12404/j.issn.1671-1815.2503946
两阶段有功无功协调优化策略,首先针对第一阶段优化后得出的有载调压变压器变比和并联电容器组无功输出,以电压质量最优和网损最小为目标,第二阶段在第一阶段取得变压器变比、并联电容器组结果基础上,调整静止无功补偿器(static var compensator,SVG)、光伏逆变器[13],以光伏并网点电压偏差最小和配电网有功波动最小为第二阶段的优化目标,两阶段通过迭代协调与反馈方法进行互动,通过多次迭代逐步优化系统参数,以实现最优的系统性能[14],流程如图1所示。
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