Functioning of back-to-back high voltage direct current link model in Tomsk electric power system

A P Maltsev,V E Rudnik,Y Yu Malkova,R A Ufa

doi:10.1088/1757-899x/1019/1/012009

Abstract

In this article the research results of steady-state and dynamic performance of asynchronous back-to-back HVDC link in Tomsk electric power system are presented. It is proposed to use the back-to-back HVDC link to provide an asynchronous link for parallel operation of the North and South parts of Tomsk electric power system. The steady-state stability limit and maximum allowed power flow were defined. Based on this the more effective location and power of back-to-back HVDC link were determined. Therefore, it is shown the application of back-to-back HVDC link decreases the level of short-circuit current, power fluctuations and increases the stability of load operation, especially of motor load at substation.

Highlights

IntroductionHigh-voltage direct current back-to-back link (back-to-back HVDC) based on static voltage converters with high-speed power fully-controlled semiconductor switches make it possible to effectively solve a number of urgent tasks in the electric power industry [1, 2]:
High-voltage direct current back-to-back link based on static voltage converters with high-speed power fully-controlled semiconductor switches make it possible to effectively solve a number of urgent tasks in the electric power industry [1, 2]: integration of non-synchronous operating electric power systems (EPS) and their parts; DC power transmission; limiting short-circuit currents in the combined EPS and their parts; damping of low-frequency oscillations in an EPS and the solution of the related problem of oscillatory stability of the EPS operation
Experimental studies of asynchronous back-to-back HVDC link These studies were conducted on the example of Tomsk EPS (Figure 1)

Summary

Introduction

High-voltage direct current back-to-back link (back-to-back HVDC) based on static voltage converters with high-speed power fully-controlled semiconductor switches make it possible to effectively solve a number of urgent tasks in the electric power industry [1, 2]:. 2. Experimental studies of asynchronous back-to-back HVDC link These studies were conducted on the example of Tomsk EPS (Figure 1). There are two asynchronous operated part of Tomsk EPS – North and South parts.

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Conclusion