无储能动态电压恢复器安全运行区域

doi:10.11930/j.issn.1004-9649.202101039

中国电力 ›› 2022, Vol. 55 ›› Issue (8): 157-164.DOI: 10.11930/j.issn.1004-9649.202101039

无储能动态电压恢复器安全运行区域

朱明星¹, 卢轩¹, 张华赢², 汪清²

1. 安徽大学电气工程与自动化学院，安徽合肥 230601;
2. 南方电网公司新型智慧城市高品质供电联合实验室（深圳供电局有限公司），广东深圳 518020

收稿日期:2021-01-08 修回日期:2022-02-20 发布日期:2022-08-18
作者简介:朱明星（1968—），男，硕士，教授，从事电能质量分析与控制领域的研究与教育工作，E-mail：xysah@163.com;卢轩（1998—），男，通信作者，硕士研究生，从事电力系统电压暂降分析与治理研究，E-mail：1255792030@qq.com;张华赢（1981—），男，硕士，高级工程师，从事电能质量技术研究，E-mail：zhyszpower@163. com;汪清（1987—），女，硕士，高级工程师，从事电能质量技术研究，E-mail：csgwang@126.com
基金资助:
南方电网有限公司科技项目（090000KK52190169，SZKJXM2019669）。

Safe Operation Area of Energy-Storage-Free Dynamic Voltage Restorer

ZHU Mingxing¹, LU Xuan¹, ZHANG Huaying², WANG Qing²

1. School of Electrical Engineering and Automation, Anhui University, Hefei 230601, China;
2. New Smart City High-Quality Power Supply Joint Laboratory of China Southern Power Grid Shenzhen Power Supply Co., Ltd., Shenzhen 518020, China

Received:2021-01-08 Revised:2022-02-20 Published:2022-08-18
Supported by:
This work is supported by Science and Technology Project of China Southern Power Grid (No.090000KK52190169, No.SZKJXM2019669).

摘要/Abstract

摘要： 无储能动态电压恢复器(dynamic voltage restorer，DVR)作为工程中解决电压暂降问题的常用设备，其实际运行受限于应用场景的参数。为解决上述问题，提出了一种无储能DVR安全运行区域的算法，基于应用场景参数计算无储能DVR的最大补偿能力，进而规范无储能DVR在工程中的应用。首先，基于线缆、变压器与无储能DVR装置安全补偿范围间的联系，构建了系统的阻抗模型；其次，分析了无储能DVR补偿过程造成的次生压降问题，结合系统过载能力计算无储能DVR装置的安全运行区域。最后，通过仿真分析对安全运行区域计算方法进行验证。结果表明：所提方法在应用场景约束条件下确定了新的无储能DVR安全运行区域，为有效应用无储能DVR提供理论参考。

关键词: 无储能动态电压恢复器, 应用场景, 次生压降, 补偿能力, 安全运行区域

Abstract: Energy-storage-free dynamic voltage restorer (DVR) is a common device used to solve voltage sag problems in engineering, but its actual operation is limited by the parameters of application scenarios. To solve this problem, an algorithm is proposed for the safe operation area of energy-storage-free DVR, which can calculate the maximum compensation capacity of energy-storage-free DVR based on the application scenario parameters, thus standardizing the application of energy-storage-free DVR in engineering. Firstly an impedance model of the system is built based on the relationship between the cable, transformer and the safety compensation range of the energy-storage-free DVR device. Secondly, the secondary voltage sag caused by the compensation process of the energy-storage-free DVR is analyzed, and the safe operation area of the energy-storage-free DVR device is calculated based on the overload capacity of the system. Finally, the calculation method of the safe operation area is further clarified by simulation analysis. The proposed calculation method determines the safe operation area of the new energy-storage-free DVR under the constraint conditions of the application scenarios, which provides a theoretical reference for the effective application of the energy-storage-free DVR.

Key words: energy-storage-free dynamic voltage restorer, application scenarios, secondary voltage sag, compensation capacity, safe operation area

朱明星, 卢轩, 张华赢, 汪清. 无储能动态电压恢复器安全运行区域[J]. 中国电力, 2022, 55(8): 157-164.

ZHU Mingxing, LU Xuan, ZHANG Huaying, WANG Qing. Safe Operation Area of Energy-Storage-Free Dynamic Voltage Restorer[J]. Electric Power, 2022, 55(8): 157-164.

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