计及多光储一体机的配电网电压优化控制策略
Voltage Optimal Control Strategy for Distribution Networks with Multiple Integrated Photovoltaic and Energy Storage Machines
韩璟琳 1胡平 1侯若松 2陈志永 2李洪涛 1柴园园3
作者信息
- 1. 国网河北省电力有限公司,河北石家庄 050011
- 2. 国网河北省电力有限公司经济技术研究院,河北石家庄 050011
- 3. 天津天海源电气技术有限责任公司,天津 300380;河北工业大学,天津 300401
- 折叠
摘要
大规模分布式光伏接入配电网易造成并网点电压越限,威胁配电网安全稳定运行.面向计及多光储一体机的配电网提出一种集中式优化与分布式实时控制相结合的电压优化控制策略.首先建立配电网集中式滚动优化模型,制定各光储下个时段的电压和功率参考;然后提出基于电压灵敏系数的分布式电压实时控制方法,制定就地无功下垂曲线、分布式无功电压支撑和就地有功功率控制逻辑;最后通过IEEE 33 节点算例验证所提控制策略的可行性和有效性.所提电压控制策略能够有效解决电压越限问题,并具备源荷功率随机波动下的自适应调压能力.
Abstract
The access of large-scale distributed photovoltaic(PV)into distribution networks(DNs)can easily cause voltage violation problem,posing a threat to the safe and stable operation of DNs.Therefore,a voltage optimal control strategy that combines the centralized optimization and distributed real-time control is presented for DNs with multiple integrated PV and energy storage(ES)machines.Firstly,a centralized rolling optimization model is established to formulate the voltage and power references of PV-ES machine in the next period.Then,a distributed voltage real-time control method is proposed using the voltage sensitivity coefficients to develop the local reactive power droop curve,distributed reactive power support and local active power control logic.Finally,the IEEE 33-node system is used to verify the feasibility and effectiveness of the proposed control strategy.The proposed voltage control strategy can effectively solve the voltage violation problem,and possess the adaptive voltage regulation ability under real-time fluctuations of source-load power.
关键词
配电网/光储系统/电压越限/集中优化/分布式控制Key words
distribution networks/photovoltaic and energy storage system/voltage violation/centralized optimization/distributed control引用本文复制引用
基金项目
国家电网河北省电力公司科技项目(B704JY220058)
出版年
2024
国家科技期刊平台
NSTL
万方数据