CAJ | 학술논문

为分析高压直流晶闸管阀故障电流下的反向电压特性，采用电路拓扑模型分析法，建立了故障电流下反向分析的数学模型，并建立相应的试验模型对分析方法进行验证。对晶闸管结温、阻尼电阻电容参数、电流变化率和正向电流4个参数的影响进行了分析，并用数学模型进行仿真计算。分析结果表明：晶闸管结温、电流变化率和正向电流均可导致反向恢复电荷的改变，从而对反向恢复电压造成影响；阻尼电阻电容一定时，有唯一阻尼电阻使反向电压最小。结果验证了该仿真分析方法的可行性，且具有较高的精确度。
위분석고압직류정갑관벌고장전류하적반향전압특성，채용전로탁복모형분석법，건립료고장전류하반향분석적수학모형，병건립상응적시험모형대분석방법진행험증。대정갑관결온、조니전조전용삼수、전류변화솔화정향전류4개삼수적영향진행료분석，병용수학모형진행방진계산。분석결과표명：정갑관결온、전류변화솔화정향전류균가도치반향회복전하적개변，종이대반향회복전압조성영향；조니전조전용일정시，유유일조니전조사반향전압최소。결과험증료해방진분석방법적가행성，차구유교고적정학도。
The reverse voltage characteristic of HVDC thyristor valve on the state of fault current was analyzed. A mathematics model was put forward by using circuit topology analysis, which can be validated by test. The influence of thyristor junction temperature, current rate of change, forward current and damping parameters was studied and simulated by implementing the mathematic model. The results show that thyristor junction temperature, current rate of change and forward current can change and influence the reverse recovery charge and voltage. When the damping capacitance is constant, a unique value of damping resistance can be achieved leading to the minimal reverse recovery voltage. The feasibility of the simulation method is verified by tests and high accuracy is achieved.