HVDC transmission line for interconnecting power grids in India and Sri Lanka

2009 International Conference on Industrial and Information Systems (ICIIS) Pub Date : 2009-12-01 DOI:10.1109/ICIINFS.2009.5429823

A.J.M.I. Jowsick, A. Arulampalam, H. M. Wijekoon

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引用次数: 7

Abstract

In this paper, the proposed interconnection of Sri Lankan power system grid and southern regional grid of Indian grid is modeled using a simple VSC configurations based on HVDC transmission. The control implemented is made in such a way that this will allow power transmissions in either way. Therefore voltage vector PLL based control together with DC-link voltage regulation is implemented. Here the HVDC both end VSC are operated with very similar controls and the only difference is one is operated as main and the other operated as sub. The main VSC controls the power flow and other follow up the main. The proposed system is modeled using PSCAD/EMTDC. Whilst the Impact of frequency variation and sudden load rejection due to one of the grid system failure is being analyzed in this paper, the reactive power control at both ends VSC to support the voltage regulation is also being studied. Simulation results show as to how the transients due to frequency fluctuation and country blackout will impact the HVDC transmission line's operations.

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用于连接印度和斯里兰卡电网的高压直流输电线路

本文采用基于高压直流输电的简单VSC配置，对斯里兰卡电力系统电网与印度电网南部区域电网的互联进行建模。所实现的控制是以这样一种方式进行的，这将允许以任何一种方式传输功率。因此，实现了基于电压矢量锁相环的控制和直流链路电压调节。这里高压直流两端的VSC以非常相似的控制操作，唯一的区别是一个作为主操作，另一个作为副操作。主VSC控制潮流，其他跟随主。采用PSCAD/EMTDC对系统进行建模。本文在分析电网系统故障引起的频率变化和突然甩负荷的影响的同时，还研究了支持电压调节的两端VSC无功控制。仿真结果显示了频率波动和国家停电引起的暂态对高压直流输电线路运行的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2009 International Conference on Industrial and Information Systems (ICIIS)

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