Research on the Reactive Voltage Mixing Control Strategy of the Distribution Network for “Source-Grid-Load-Storage”

Zhao Fulin, Li Hui, Yanxin Li, Dai Wei, X. Jia
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Abstract

With the rapid development of distributed energy, due to the intermittent, random, and strong volatility of distributed energy, the grid connection of distributed energy will lead to reverse currents and cause power quality problems such as voltage crossing limits if the power is not consumed. This paper analyzes the impact of “source-grid-load-storage” resources on the power grid based on the “source-grid-loadstorage” interactive regulation system of a city. Using reactive power compensation as the regulation tool, a coordinated control framework is designed, and a coordinated and optimized control strategy is proposed to adapt to multiple operation scenarios, as well as a centralized optimization strategy and specific processes targeting active and reactive power. It effectively solves the problem of power consumption of distributed energy and the problem of power quality such as voltage crossing limit. To some extent, it alleviates the problem of new energy consumption. At the same time, the operation strategy of the “source-grid-load-storage” regulation system is optimized, so that the operation of the “source-grid-load-storage” regulation system is more reasonable. It promotes the development of new energy technologies and helps to achieve the goal of “carbon peak and carbon neutrality”.
“源-网-负荷-蓄”配电网无功混压控制策略研究
随着分布式能源的快速发展,由于分布式能源具有间歇性、随机性和较强的波动性,如果不用电,将分布式能源并网会产生反向电流,造成电压过限等电能质量问题。本文以某城市“源-网-蓄负荷”交互调节系统为基础,分析了“源-网-蓄负荷”资源对电网的影响。以无功补偿为调节工具,设计了协调控制框架,提出了适应多种运行场景的协调优化控制策略,以及针对有功和无功的集中优化策略和具体流程。有效地解决了分布式能源的功耗问题和电压过限等电能质量问题。在一定程度上缓解了新能源消费问题。同时,对“源-网-蓄”调节系统运行策略进行优化,使“源-网-蓄”调节系统运行更加合理。它促进了新能源技术的发展,有助于实现“碳峰值和碳中和”的目标。
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