| 基于分布式光伏集群协同优化的配电网电压控制策略 |
| |
| 引用本文： | 徐衍会,崔瑞顺,刘江东,郝雨辰,朱健,张红斌,胡俊杰. 基于分布式光伏集群协同优化的配电网电压控制策略[J]. 现代电力, 2023, 40(2): 143-152. DOI: 10.19725/j.cnki.1007-2322.2021.0296 |
| |
| 作者姓名： | 徐衍会 崔瑞顺 刘江东 郝雨辰 朱健 张红斌 胡俊杰 |
| |
| 作者单位： | 1.华北电力大学电气与电子工程学院，北京市昌平区 102206 |
| |
| 基金项目： | 国家电网公司科技项目“面向友好支撑的高比例分布式电源集群协同调控技术研究及示范”(4000-202118066A-0-0-00)。 |
| |
| 摘 要： | 随着分布式光伏在配电网中渗透率的增加，负荷与光伏出力波动等原因引起的配电网电压越限问题日益凸出。为此，提出一种基于分布式光伏集群协同优化的配电网电压控制策略。首先，通过电气距离模块度指标对配网进行集群划分；然后，通过无功电压灵敏度矩阵选取各集群的主导节点，并利用集群电压偏差度判定各集群电压状态。危险集群的光伏逆变器采用就地控制模式调压；安全集群的光伏逆变器采用可变功率控制模式。利用集群之间无功电压的灵敏度，将安全集群与危险集群进行协同配合，从而使整个配电网电压运行在安全域内。最后，根据某实际配电网41节点系统的算例证明，基于光伏集群协同优化的配电网电压控制策略，比统一下垂控制和统一功率优化控制的效果更佳，能够有效提升配电网电压质量。
|
| 关 键 词： | 分布式光伏 配电网电压 集群电压偏差度 安全集群 危险集群 协同优化 |
| 收稿时间： | 2021-11-01 |
A Voltage Control Strategy of the Distribution Network Based on Cooperative Optimization of Distributed Photovoltaic Clusters |
| |
| Affiliation: | 1.School of Electrical and Electronic Engineering, North China Electric Power University, Changping District, Beijing102206, China2.State Grid Jiangsu Electric Power Co., Ltd., Yangzhou Power Supply Branch, Yangzhou 225009, Jiangsu Province, China3.State Grid Jiangsu Electric Power Co., Ltd., Nanjing 210024, Jiangsu Province, China4.State Grid Economic and Technological Research Institute Co., Ltd., Changping District, Beijing102211, China |
| |
| Abstract: | Along with the increase of the permeability of distributed photovoltaic (abbr. PV) generation in distribution network, the voltage out-of-limit in distribution network caused by the fluctuation of load and PV output became increasingly severe. For this reason, a distribution network voltage control strategy based on the collaborative optimization of distributed PV cluster was proposed. Firstly, by means of electrical distance modularity index the distribution network was divided into clusters. Secondly, by use of reactive voltage sensitivity matrix the dominant nodes of each cluster were selected and the voltage status of each cluster was decided by the degree of voltage deviation. The local control mode was applied to voltage regulation of the PV inverters in dangerous clusters and the variable power controller mode was applied to the PV inverters in within safety clusters. Utilizing the reactive voltage sensitivities among clusters the cooperation of safe clusters with dangerous clusters was conducted to make the voltage of entire distribution network operated within the safety margin. Finally, the results of computing example of a certain actual distribution system with 41 nodes show that the results from PV cluster coordinated optimization based-voltage control strategy of distribution network is much better than that from unified droop control strategy and that from unified power optimization control strategy, besides, the voltage quality of distribution network can be effectively improved. |
| |
| Keywords: | |
|
| 点击此处可从《现代电力》浏览原始摘要信息 |
|
点击此处可从《现代电力》下载免费的PDF全文 |
|
