Impacts of Operation of 750 kV Yili-Kuche Power Transmission Line on Security and Stability of Xinjiang Power Grid

doi:10.11930/j.issn.1004-9649.2016.08.021.05

Abstract

Abstract: The 750 kV Xinjiang Yili-Kuche power transmission and transformation project will form the Tianshan western section of a large ring network after completion and being put into operation in 2016. A calculation and analysis is made on the Xinjiang power grid before and after operation of the Yili-Kuche Line in terms of power flow distribution, safety and stability level, short-circuit current level and small disturbance stability. And the effects of the operation of Yili-Kuche line on the transmission capacity of key sections are studied. Calculation results show that the operation of Yili-Kuche line will realize inter-supply between north and south of Xinjiang power, and complementation between hydropower and photovoltaic power; lower the Isolated running risk of Yili region after tripping of Yili-Wusu line; improve the angle stability and small disturbance stability of Xinjiang power grid and upgrade the outbound power delivery capacity of Yili and Kuche region.

Key words: Yili-Kuche, safety and stability, short-circuit current, small disturbance stability, transmission capacity

CLC Number:

TM732

LI Xiaojun, ZHANG Zhiqiang, ZHENG Chao, LV Pan, ZHOU Zhuan, CHANG Xiqiang, WANG Heng. Impacts of Operation of 750 kV Yili-Kuche Power Transmission Line on Security and Stability of Xinjiang Power Grid[J]. Electric Power, 2016, 49(8): 21-25.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2016.08.021.05

https://www.electricpower.com.cn/EN/Y2016/V49/I8/21

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