含分布式光伏的有源配電網電壓控制系統設計
黃素娟1,賀麗平1,吳爽2,馮秋俠2
(1 南京科技職業學院 電氣與控制工程學院,江蘇 南京 210048;
2 南瑞集團有限公司,江蘇 南京 211106)
摘 要:大量分布式光伏的接入,使配電網電壓問題更加凸顯的同時也為配電網提供了可控資源。為充分挖掘有源配電網的調節潛力,實現全過程電壓控制,提出一種包含接入前電壓評估、日前網絡重構、日內電壓調節的多時間尺度有源配電網電壓控制系統。光伏接入前的電壓估算為合理規劃分布式光伏接入提供依據,光伏接入后,日前基于凈負荷進行網絡重構,日內基于靈敏度進行電壓調節,從而實現電壓越限控制。提出的電壓估算方法及靈敏度計算方法充分考慮工程實際情況,計算簡單、計算量小,通過某 10 kV 配電網的算例分析,表明該方法準確度較高,能夠滿足工程應用。
關鍵詞: 有源配電網;分布式光伏;電壓控制;多時間尺度;網絡重構;越限控制;靈敏度
中圖分類號:TM615 ;TM714.2 文獻標識碼:A 文章編號:1007-3175(2025)06-0024-05
Design of Voltage Control System for Active Distribution
Network with Distributed Photovoltaic
HUANG Su-juan1, HE Li-ping1, WU Shuang2, FENG Qiu-xia2
(1 School of Electrical and Control Engineering, Nanjing Polytechnic Institute, Nanjing 210048, China;
2 Nari Group Corporation, Nanjing 211106, China)
Abstract: The access of a large number of distributed photovoltaics, which not only highlights the voltage problem in the distribution network, but also provides controllable resources for the distribution network. In order to fully exploit the regulation potential of active distribution network and achieve full-process voltage control. A multi-time-scale active distribution network voltage control system is proposed,which includes pre-access voltage assessment, day-ahead network reconfiguration and intra-day voltage regulation. The voltage estimation before photovoltaic access provides a basis for reasonable planning of distributed photovoltaic access. After photovoltaic access, the network is reconfigured based on net load on the current day, and voltage regulation is carried out based on sensitivity on the current day, thereby achieving voltage over-limit control. The proposed voltage estimation method and sensitivity calculation method fully consider the actual engineering situation, the calculation is simple and the amount of calculation is small. The analysis based on a 10 kV distribution network in a certain area shows that the proposed method has high accuracy and can meet engineering applications.
Key words: active distribution network; distributed photovoltaic; voltage control; multi-time-scale; network reconfiguration; over-limit control; sensitivity
參考文獻
[1] 徐衍會,崔瑞順,劉江東,等. 基于分布式光伏集群協同優化的配電網電壓控制策略[J] . 現代電力,2023,40(2) :143-152.
[2] 范心明,彭飛進,伍肇龍,等. 基于混合整數凸規劃的主動配電網無功電壓優化運行方法[J]. 電力電容器與無功補償,2018,39(4) :99-105.
[3] 全歡,彭顯剛,劉涵予,等. 基于深度強化學習的配電網實時電壓優化控制方法[J] . 電網技術,2023,47(5) :2029-2038.
[4] 黃偉,劉斯亮,羿應棋,等. 基于光伏并網點電壓優化的配電網多時間尺度趨優控制[J] . 電力系統自動化,2019,43(3) :92-100.
[5] 李鵬,姜磊,王加浩,等. 基于深度強化學習的新能源配電網雙時間尺度無功電壓優化[J]. 中國電機工程學報,2023,43(16) :6255-6265.
[6] 莊慧敏,張江林,劉興茂. 基于多時間尺度的主動配電網雙層電壓優化協調控制策略[J] . 南方電網技術,2018,12(6) :52-59.
[7] 劉蕊,吳奎華,馮亮,等. 含高滲透率分布式光伏的主動配電網電壓分區協調優化控制[J] . 太陽能學報,2022,43(2) :189-197.
[8] 段向梅. 高比例光伏接入的配電網電壓優化調控方法研究[D]. 南京:東南大學,2019.
[9] 陳鋼,黃國政,鄧瑞麒,等. 結合網絡重構的主動配電網日前無功電壓雙層優化[J] . 供用電,2022,39(5) :13-24.
[10] 袁之元,魏林影. 基于分布式新能源與配網網絡重構的降損技術[J]. 電工電氣,2024(5) :41-46.
[11] 陳文進, 甘雯, 張俊, 等. 基于 HEM 靈敏度的配電網分層分區電壓調節策略[J] . 電力建設,2022,43(11) :42-52.