Hierarchically Coordinated Voltage Control Method for Active Distribution Networks Considering Communication Conditions

WU Yufeng; LIU Dong; LIAO Wang; WEI Xu; CHEN Guanhong; CHEN Fei

doi:10.7500/AEPS20231007001

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Hierarchically Coordinated Voltage Control Method for Active Distribution Networks Considering Communication Conditions

Basic Research | 更新时间：2025-06-16

- Hierarchically Coordinated Voltage Control Method for Active Distribution Networks Considering Communication Conditions
- Automation of Electric Power Systems Vol. 48, Issue 14, Pages: 91-99(2024)
- 作者机构：
  
  电力传输与功率变换控制教育部重点实验室（上海交通大学），上海市 200240
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China-Key Program of Joint Fund in State Grid(U2166210)
- DOI：10.7500/AEPS20231007001
  CLC：
- Received：07 October 2023，
  
  Revised：2023-11-25，
  
  Published Online：18 June 2024，
  
  Published：25 July 2024
- 稿件说明：
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巫宇锋,刘东,廖望等.考虑通信工况的主动配电网多层级协作电压控制方法[J].电力系统自动化,2024,48(14):91-99.

WU Yufeng,LIU Dong,LIAO Wang,et al.Hierarchically Coordinated Voltage Control Method for Active Distribution Networks Considering Communication Conditions[J].Automation of Electric Power Systems,2024,48(14):91-99.
巫宇锋,刘东,廖望等.考虑通信工况的主动配电网多层级协作电压控制方法[J].电力系统自动化,2024,48(14):91-99. DOI： 10.7500/AEPS20231007001.

WU Yufeng,LIU Dong,LIAO Wang,et al.Hierarchically Coordinated Voltage Control Method for Active Distribution Networks Considering Communication Conditions[J].Automation of Electric Power Systems,2024,48(14):91-99. DOI： 10.7500/AEPS20231007001.

摘要

随着主动配电网的发展，通信工况对电压控制的影响更加显著。主站与光伏逆变器的通信中断会影响逆变器的无功出力调整，进而导致配电网电压越限。文中提出一种考虑通信工况的主动配电网多层级协作电压控制方法，其对配电网信息侧进行建模以描述控制过程的各轮信息交互，再通过协作集中层级与就地层级，实现了在不同通信工况下对各逆变器无功出力的合理调整。集中层级建立了考虑通信工况的逆变器下垂出力约束、配电网潮流约束以及考虑网络损耗和电压偏差的多目标函数，并对其构建的线性优化问题进行求解。就地层级根据逆变器通信状态来选用经集中层级决策的或提前预设的下垂参数。通过基于IEEE 118节点系统的仿真分析，验证了所提方法能在逆变器通信中断时段内保证配电网电压不越限，并能实现网络损耗与电压分布的全局优化。

Abstract

With the development of active distribution networks

the impact of communication conditions on voltage control becomes more significant. The interruption in communication between the main station and photovoltaic inverters will affect the adjustment of inverter reactive power

resulting in voltage violations in the distribution network. This paper proposes a hierarchically coordinated voltage control method for active distribution networks considering the communication conditions which models the cyber side of the distribution network to describe the information interaction during the control process. Then

the reasonable adjustment of the reactive power output for each inverter in different communication conditions is realized through the coordination of the central and local hierarchies. The central hierarchy establishes the droop output constraint for inverters considering communication conditions

the power flow constraints of distribution networks

and the multi-objective function considering both network loss and voltage deviation

and the linear optimization problem is solved. The local hierarchy selects droop parameters decided by the centra hierarchy or pre-set based on the inverter communication conditions. By the simulation analysis on IEEE 118-bus system

it is verified that the proposed method can ensure that the voltage of the distribution network remains within the normal range during communication interruptions

while achieving the global optimization of network loss and voltage distribution

关键词

Keywords

references

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