TCSC減弱次同步諧振能力的仿真分析
朱瑋珂
（國網(wǎng)蘇州供電公司，江蘇 蘇州 215004）
摘 要：晶閘管控制串聯(lián)補償器(TCSC)作為柔性交流輸電設(shè)備，可以用來解決次同步諧振(SSR)問題。通過對TCSC電路模型的分析，得出其影響SSR問題的機理，并推導出其等效電路模型。分別設(shè)置TCSC和其等效電路運行在感性和容性的條件下，對TCSC電路模型及其等效模型在SSR現(xiàn)象中的效果進行仿真。結(jié)果表明，感性條件下TCSC和其等效電路可以對SSR現(xiàn)象起到阻尼作用，但是容性條件下則會增強SSR現(xiàn)象，且TCSC由于具有更好的動態(tài)特性，其阻尼作用要優(yōu)于等效電路。
關(guān)鍵詞：晶閘管控制串聯(lián)補償器；次同步諧振；等效電路；仿真
中圖分類號：TM761 文獻標識碼：A 文章編號：1007-3175(2017)11-0025-05
Simulation Analysis of Thyristor Controlled Series Compensator Weakening Subsynchronous Resonance Capacity
ZHU Wei-ke
（State Grid Suzhou Power Supply Company, Suzhou 215004, China）
Abstract: Thyristor control series compensator (TCSC), as flexible alternation current (AC) transmission equipment, can be used to solve the problem of sub-synchronous resonance (SSR). Via the analysis of TCSC circuit model, the mechanism of SSR problem was obtained and its equivalent circuit model was deduced. In addition, TCSC and its equivalent circuit were set up under the conditions of inductive and capacitive conditions, and the effect of TCSC circuit model and its equivalent model in SSR phenomenon was simulated. The results show that the TCSC and its equivalent circuit can damp the SSR phenomenon under the perceptual condition, but it will enhance the SSR phenomenon under the capacitive condition. The TCSC perform better in SSR than characteristics circuit due to its dynamic characteristics.
Key words: thyristor controlled series compensator; sub-synchronous resonance; equivalent circuit; simulation
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