Apparatus and method for verifying lightning arrester of high voltage direct current transmission system

Patent metadata

Field	Value
Publication number	US-2015331967-A1
Application number	US-201514696044-A
Country	US
Kind code	A1
Filing date	Apr 24, 2015
Priority date	May 13, 2014
Publication date	Nov 19, 2015
Grant date	—

Abstract

Provided is an apparatus for an insulation design. The apparatus for the insulation design, which performs the insulation design of a high voltage direct current (HVDC) transmission system, includes an insulation design part, a lighting arrester modeling part, a simulation test part, a comparison part, and a result output part.

First claim

What is claimed is:

1 . An apparatus for an insulation design, which performs the insulation design of a high voltage direct current (HVDC) transmission system, the apparatus comprising:
an insulation design part generating an insulation model of the HVDC transmission system; a lighting arrester modeling part generating a lighting arrester model that satisfies a specification of a lighting arrester selected for the lighting arrester within the insulation model of the HVDC transmission system; a simulation test part performing a simulation test of the lighting arrester model in the insulation model of the HVDC transmission system to output a lighting arrester simulation test result; a comparison part acquiring a lighting arrester property test result and comparing the lighting arrester property test result to the lighting arrester simulation test result; and a result output part outputting a verification result of the lighting arrester on the basis of the comparison between the lighting arrester property test result and the lighting arrester simulation test result.

2 . The apparatus according to claim 1 , wherein the lighting arrester modeling part generates the lighting arrester model that satisfies the specification of the selected lighting arrester on the basis of at least one of a lightning impulse, a switching impulse, a fast front wave impulse, a slow front wave impulse, and a temporary over voltage.

3 . The apparatus according to claim 1 , wherein the lighting arrester property test result comprises at least one test result of insulation resistance, leakage current, an operation firing voltage, a lighting restriction voltage, long-time impact current, partial discharge, a lighting withstanding voltage, and an high current operation.

4 . The apparatus according to claim 1 , wherein, if the lighting arrester property test result is satisfied within an allowable range of the lighting arrester simulation test result, the result output part outputs a positive result, and
if the lighting arrester property test result is not satisfied within an allowable range of the lighting arrester simulation test result, the result output part outputs a negative result.

5 . The apparatus according to claim 1 , wherein the insulation design part comprises:
a first insulation modeling unit modeling the HVDC transmission system on the basis of an overvoltage and rated voltage of the HVDC transmission system to generate an insulation basis model of the HVDC transmission system; an insulation level calculation unit performing insulation calculation of the insulation basic model to determine an insulation cooperation withstanding voltage that is adequate for performing a function of the insulation basis model of the HVDC transmission system; and a second insulation modeling unit correcting the insulation basis model of the HVDC transmission system on the basis of the insulation cooperation withstanding voltage to generate an insulation model of the HVDC transmission system.

6 . The apparatus according to claim 5 , wherein the insulation design part further comprises:
a rated insulation level calculation unit calculating a rated insulation level that satisfies a reference withstanding voltage of the insulation model of the HVDC transmission system a third insulation modeling unit correcting the insulation model of the HVDC transmission system on the basis of a variation in impedance in a divided section of the HVDC transmission system to generate a corrected insulation model; and an insulation verification unit verifying whether the corrected insulation model of the HVDC transmission system satisfies the required withstanding voltage.

7 . The apparatus according to claim 6 , wherein the divided section of the HVDC transmission system comprises at least one of a transmission-side AC part, a transmission-side transformation part, a DC power transmission part, a customer-side transformation part, a customer-side AC part, a transmission-side transformer part, a transmission-side AC-DC converter part, a customer-side DC-AC converter part, and a customer-side transformer part.

8 . The apparatus according to claim 5 , wherein the second insulation modeling unit corrects the insulation basis model of the HVDC transmission system on the basis of a difference between an actual operation state of the HVDC transmission system and a state of the insulation basis model of the HVDC transmission system and the insulation cooperation withstanding voltage to generate an insulation model of the HVDC transmission system.

Assignees

• Lsis Co Ltd

Inventors

• Choi Yong Kil
• Choi Ho Seok

Classifications

• H02J2103/30

  Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks · CPC title

• H02J1/00

  Circuit arrangements for DC mains or DC distribution networks · CPC title

• H02J3/36 Primary

  Arrangements for transfer of electric power between AC networks via high-voltage DC [HVDC] links; Arrangements for transfer of electric power between generators and networks via HVDC links · CPC title

• Y02E60/60

  Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD] · CPC title

• G06F30/00

  Computer-aided design [CAD] · CPC title