淮海工学院学报（自然科学版）
淮海工學院學報（自然科學版）
회해공학원학보（자연과학판）
JOURNAL OF HUAIHAI INSTITUTE OF TECHNOLOGY(NATURAL SCIENCES EDITION)
2014年
1期
25-29
,共5页
相间短路%接地短路%对称分量%序分量突变量%过渡电阻
相間短路%接地短路%對稱分量%序分量突變量%過渡電阻
상간단로%접지단로%대칭분량%서분량돌변량%과도전조
inter-phase short circuit%grounding fault%symmetrical components%sequence compo-nent variation%transition resistance
用对称分量分析了短路故障序分量突变量与故障点间的关系，根据附加状态序网络，推导出有意义的计算前适用于各种横向故障保护安装处至故障点间的k值的一般表达式；故障点存在过渡电阻时k值虽然存在误差，但不影响测距或距离保护程序应用；提出了对称分量突变量选择故障相原理及相间距离保护程序流程和故障点存在过渡电阻时减小误差的措施。通过双侧、单侧电源系统仿真验证了该方案的有效性。
用對稱分量分析瞭短路故障序分量突變量與故障點間的關繫，根據附加狀態序網絡，推導齣有意義的計算前適用于各種橫嚮故障保護安裝處至故障點間的k值的一般錶達式；故障點存在過渡電阻時k值雖然存在誤差，但不影響測距或距離保護程序應用；提齣瞭對稱分量突變量選擇故障相原理及相間距離保護程序流程和故障點存在過渡電阻時減小誤差的措施。通過雙側、單側電源繫統倣真驗證瞭該方案的有效性。
용대칭분량분석료단로고장서분량돌변량여고장점간적관계，근거부가상태서망락，추도출유의의적계산전괄용우각충횡향고장보호안장처지고장점간적k치적일반표체식；고장점존재과도전조시k치수연존재오차，단불영향측거혹거리보호정서응용；제출료대칭분량돌변량선택고장상원리급상간거리보호정서류정화고장점존재과도전조시감소오차적조시。통과쌍측、단측전원계통방진험증료해방안적유효성。
This paper analyzes the relationship between the fault point and the sequence compo-nent variation of short circuit fault by symmetrical component.Based on the additional state-se-quence network,the general expression of applicable k value is deduced between all kinds of hori-zontal fault protection installation to the fault point before meaningful calculations.When the transition resistance is present at the fault point,the k value,though it has errors,does not af-fect the distance or distance protection applications.It proceeds to put forward the fault-phase se-lecting principle with a sequence component variation,the procedure flow chart of phase distance protection and the measures to reduce the errors when transition resistance is present at the fault point.Single and both-side power system simulations show that the program is valid.
