含分布式电源配网多时间尺度电压-无功控制
Multi-time Scale Voltage-Reactive Power Control for Distribution Network with Distributed Generation
刘浩田 1郑楚玉 1冷阳 1李琴 1张华 1陈仕杜 2李佳勇2
作者信息
- 1. 能源互联网供需运营湖南省重点实验室,长沙 410004;国网湖南省电力有限公司经济技术研究院,长沙 410004
- 2. 湖南大学 电气与信息工程学院,长沙 410082
- 折叠
摘要
针对大规模分布式电源接入配电网导致的网损增加、电压偏移增大和电压越限等问题,研究考虑不同种类和响应速度调压设备的多时间尺度电压-无功协同控制方法.在日前阶段,建立以最小化网损及电压偏差为目标,考虑有载调压分接头、电容器组等传统设备的日前优化模型,采用线性化和二阶锥方法进行高效求解;在日内阶段,考虑不同分布式电源及调压设备的调节成本差异,提出基于电压灵敏度原理的无功-有功高效电压控制模型.仿真算例表明,该方案能降低电压偏移和网络损耗(降低34.73%),当电压越限发生时,能根据电压灵敏度以及各设备调控成本优化控制目标,在调整电压的同时兼顾经济性.
Abstract
Aiming at the problems of network loss increase,voltage deviation and voltage exceeding specified limits when large-scale distributed generations(DGs)connected to distribution network(DN),this paper proposes a multi-time scale coordinated control method considering different types and response speeds of reactive power regulation equipment.In day-ahead stage,an optimization model is established to minimize the network loss and voltage deviation,by controlling traditional equipment like tap changers and capacitor banks,which is efficiently solved by linearization and second-order cone algorithm.In real-time stage,a reactive power-voltage control model based on the voltage sensitivity principle is proposed,which considers the differences in the adjustment costs of different DGs.The simulation example shows that the proposed method reduces the voltage deviation and network loss(by34.73%).And for the voltage regulation,it can optimize the regulation target according to the voltage sensitivity and the regulation costs of each DG,and thus has better economic performance while adjusting voltages.
关键词
电压控制/无功功率/分布式电源/多时间尺度Key words
voltages control/reactive power/distributed generation/multi-time scale引用本文复制引用
基金项目
国网湖南省电力有限公司科技项目(5216A221001G)
湖南省科技创新平台与人才计划(2019TP1053)
国家自然科学基金(51907056)
出版年
2024
NETL
NSTL
万方数据