利用多用途控制策略,通过基于 VSC 的高压直流输电线路改善两个互联地区的瞬态和稳态性能

IF 2 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Hossien Faraji, Amir Khorsandi, Seyed Hossein Hosseinian
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引用次数: 0

摘要

本文介绍了各种控制策略,以改善由 VSC-HVDC 输电线路连接的两个互联区域的运行。主要重点是设计一个中央控制系统 (CCS),以协调两个区域的控制单元。在区域 1,一个交流电压控制单元与 CCS 相连。在区域 2,包括负荷功率控制单元、故障检测单元和交流电压控制单元在内的三个控制单元也与 CCS 相连。CCS 接收这些单元的输入,并为直流线路两侧的直流电压和有功/无功功率控制单元生成指令。第一种建议策略可解决 2 号区域负荷波动造成的永久性电压下降问题。它根据区域 2 的电压变化调整区域 1 的传输功率。第二种策略侧重于通过在发生故障时从区域 1 注入有功和无功功率来缓解区域 2 的故障。第三种策略通过控制直流线路两侧电站的无功功率来解决两个区域的瞬态电压振荡。使用 MATLAB-SIMULINK 进行的仿真表明,这些机制成功地实现了各自的目标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Transient and steady-state performance improvement of two interconnected areas through VSC-based HVDC transmission line using multi-purpose control strategies

Transient and steady-state performance improvement of two interconnected areas through VSC-based HVDC transmission line using multi-purpose control strategies

This paper presents various control strategies to improve operations in two interconnected areas connected by a VSC-HVDC transmission line. The main focus is on designing a central control system (CCS) that coordinates control units in both areas. In area 1, an AC voltage control unit is connected to the CCS. In area 2, three control units including a load power control unit, a fault detection unit, and an AC voltage control unit are also connected to the CCS. The CCS receives inputs from these units and generates commands for the DC voltage and active/reactive power control units on both sides of the DC line. The first proposed strategy addresses permanent voltage drops caused by load fluctuations in area 2. It adjusts the transmitted power from area 1 based on voltage variations in area 2. The second strategy focuses on mitigating faults in area 2 by injecting active and reactive power from area 1 during such events. The third strategy resolves transient voltage oscillations in both areas by controlling the reactive power of stations on either side of the DC line. Simulations using MATLAB-SIMULINK demonstrate that these mechanisms successfully achieve their objectives.

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来源期刊
Iet Generation Transmission & Distribution
Iet Generation Transmission & Distribution 工程技术-工程:电子与电气
CiteScore
6.10
自引率
12.00%
发文量
301
审稿时长
5.4 months
期刊介绍: IET Generation, Transmission & Distribution is intended as a forum for the publication and discussion of current practice and future developments in electric power generation, transmission and distribution. Practical papers in which examples of good present practice can be described and disseminated are particularly sought. Papers of high technical merit relying on mathematical arguments and computation will be considered, but authors are asked to relegate, as far as possible, the details of analysis to an appendix. The scope of IET Generation, Transmission & Distribution includes the following: Design of transmission and distribution systems Operation and control of power generation Power system management, planning and economics Power system operation, protection and control Power system measurement and modelling Computer applications and computational intelligence in power flexible AC or DC transmission systems Special Issues. Current Call for papers: Next Generation of Synchrophasor-based Power System Monitoring, Operation and Control - https://digital-library.theiet.org/files/IET_GTD_CFP_NGSPSMOC.pdf
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