Research on Current Interruption by Grounding switch Used in 750kV Double-circuit Transmission Lines

• Autorzy: Shengchang J. , Xiaobo O.

Warianty tytułu

PL

Badania prądu przerwania w uziemionym przełączniku używanym w podwójnej linii transmisyjnej 750 kV

• Języki publikacji: EN

Abstrakty

EN

In order to interrupt electromagnetically and electro-statically inductive current with high amplitude, grounding switches are applied in double-circuit transmission lines. In this paper, the formula of the induced voltage and current are drawn under different condition of grounding switch installed on the maintenance line. In order to clarify the characteristics of every electrical parameter, after calculating the capacitance and inductance matrix of 750kV double circuit transmission lines, simulation research is conducted using EMTP-ATP. Inductive voltage and current of 750kV doublecircuit transmission line are calculated and analyzed. Furthermore, in order to classify the worst switching parameter of grounding switches, the steady-state currents and the transient recovery voltage (TRV) are also calculated and analyzed. And then, the tests of capacitive and inductive current interruption for a 800kV grounding switch are also carried out in the laboratory. The results of the simulation and experiment in this paper provide guiding opinions for selecting grounding switches used in the 750kV double-circuit transmission lines.

PL

W pracy określano zależności prądu i napięcia indukowanego w uziemionym przełączniku przy różnych warunkach pracy. Obliczono pojemność i indukcyjność linii transmisyjnej 750 kV a następnie symulowano przebiegi prądów.

Słowa kluczowe

EN

double circuit line; grounding system; simulation

PL

przełącznik; przebieg prądu; prąd

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2013
• Tom: R. 89, nr 4
• Strony: 109--114
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Shengchang J.

• State Key Laboratory of Electrical Insulation and Power Equipment, Department of electric engineering, Xi′an Jiaotong University

autor

Xiaobo O.

• Guangdong Electric Power Research Institute, Guangzhou,China

Bibliografia

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• [3] Abdul M.Mousa. "Ground Switch Interrupting Duty and Total Ground Current Imposed by Induction From Parallel Transmission Lines: A Quantitative Analysis for the Range 69kV-1150kV". IEEE Transactions on Power Apparatus and Systems, Vol. 100, No. 8, pp. 3839-3849, 1981.
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• [9] Liqun Shang, Wei Shi. "Investigation of the secondary arc current and the recovery voltage on a double-circuit transmission lines". IEEE Power Engineering Society General Meeting, Denvor, USA, Vol.2, pp. 1209-1213, 2004.
• [10] Lei Chen, Haijun Liu, Ming Wu, and et al. "Study on Compensation for Secondary Arc Current on UHV Double-Circuit Lines". Power and Energy Engineering, Conference (APPEEC), Wuhan, China, pp.1-4, 2011.
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