电力系统保护与控制2024，Vol.52Issue(12)：113-122,10.DOI:10.19783/j.cnki.pspc.231099
考虑大规模风光分层接入的配电网多层协调无功优化方法
A multi-layer coordinated reactive power optimization method for a distribution network considering large-scale distributed wind-photovoltaic hierarchical access
摘要
Abstract
The large number of layered multi-point accesses of wind and solar energy sources has brought a negative impact of voltage limit to the operation of a distribution network.It also increases the difficulty of reactive power collaborative optimization of different voltage levels.Considering the regulation requirements of different voltage levels,a multi-layer coordinated reactive power optimization method based on equivalent model is proposed from the perspective of dimension reduction equivalence of the model.Considering two station systems,one containing reactive power adjustment equipment and one not,this method uses a neural network to carry on the training to the massive station area correlation operation data to obtain the station area fitting model,forming two types of uncontrollable and controllable platform equivalent models.These two fitting models are used to replace the physical models of the two types of station areas,enabling the station areas to participate in the reactive power optimization of the distribution network in a data-driven manner.This forms a single voltage level object number mixed optimization scheduling model composed of the feeder physical model and the station areas fitting model.The original multi-layer reactive power optimization problem is transformed into a single-layer system optimization problem,and then the single-layer system optimization scheduling problem is solved.It can reduce the scale of optimization calculation for distribution network systems,and combine reactive power optimization mathematical models with data-driven methods to achieve multi-level coordinated reactive power optimization of distribution network feeders and station areas.The feasibility,effectiveness and superiority of the proposed method for solving the problem of voltage over-limit caused by distributed wind-photovoltaic access are verified by an example.This helps to ensure the economic,safe and stable operation of the distribution network.关键词
配电网/无功优化/多层协调/数据驱动Key words
distribution network/reactive power optimization/multi-level coordination/data-driven引用本文复制引用
郭雪丽,胡志勇,王爽,热依娜·马合苏提,姚楠,李婷婷,周玮..考虑大规模风光分层接入的配电网多层协调无功优化方法[J].电力系统保护与控制,2024,52(12):113-122,10.基金项目
This work is supported by the National Natural Science Foundation of China(No.61873048). 国家自然科学基金项目资助(61873048) （No.61873048）
国网河南省电力公司2022年度重点科技项目"配电网分布式能源接纳能力评估与提升技术研究"资助(521780220001) （521780220001）
