分闸过电压,opening over-voltage
1)opening over-voltage分闸过电压
1.Researches show that main attention should be paid on the ground fault,closing andopening over-voltage in UHVAC switching over-voltage.研究表明,特高压操作过电压应主要考虑接地故障、合闸与分闸过电压,其中接地故障过电压相对较低,通常使用线路两端避雷器即可将其限制在允许范围内;合闸过电压可采用合闸电阻或配置多组避雷器两种措施来加以限制,但前者存在故障、损坏等问题,而后者已在超高压系统实际运行中得到了验证;分闸过电压可使用分闸电阻或配置多组避雷器来限制,但考虑到前者不足之处较为突出,我国特高压线路倾向于不使用分闸电阻。
2)closing overvoltage合闸过电压
1.In this paper,exploration is made upon the detailed process of overvoltage generation during capacitor operation,and the viewpoint thatclosing overvoltage is the main cause of capacitor switching overvoltage is proposed.对电容器操作过电压产生的具体过程进行了探讨,提出了合闸过电压是构成电容器操作过电压的主要原因的观点。
2.The computation of power frequency overvoltage,secondary arc current,3 phaseclosing overvoltage and single phase reclosing overvoltage in Yangcheng Jiangsu 500 kV power transmission system by EMTP is presented in this paper.本文对阳城———江苏 5 0 0kV输电系统的工频过电压、潜供电流以及三相合闸、单相重合闸过电压利用EMTP进行了计算。
英文短句/例句
1.Development of Switching Overvoltage Analysis Software for Transmission-Line Energization in Black-Start Process;黑启动路径空载合闸过电压分析软件的开发
putation and Evaluation of Switching Over-Voltages of Transmission-Line Energization for Power System Black-Start;黑启动路径空载合闸过电压的仿真计算与校验
3.Switching Over-voltage Verification and Simulation of Unloaded Line in Black-start Scheme黑启动方案的空载合闸过电压分析与仿真
4.Study on No-load Closing Overvoltage of Transformer in Traction Substation of Ha-da Electric Railway;哈大电气化铁路牵引站变压器空载合闸过电压的研究
5.750kV Transmission Line Protect & Autorecloser Operation For Limiting Over-voltage;750kV输电线保护及重合闸动作与过电压的抑制
6.Simulation of Commutating Over Voltage for Thyristor Based on Matlab基于Matlab的晶闸管换相过电压仿真
7.Application of Phase Selection Switch in Low Voltage Electrical Apparatus Test低压电器试验中选相合闸开关的应用
8.Study of Restrike Overvoltage When Switching off Shunt Capacitors并联电容器分闸重击穿操作过电压研究
9.Research of Lightning Over-Voltage in UHV Transmission Lines and Secondary Arc after the Single-Phase Trip-out Caused by Insulator-Flash;超高压输电线路雷电过电压及单相闪络跳闸后潜供电流的研究
10.Analysis and Calculation of the Allowed Values of Contact Pressures during the Circuit Breaker Closed Work;断路器合闸过程触头压力允值的分析计算
11.Calculation on Windings Stability in Condition of Switching No-Load and Short-Circuit for Transformer变压器空载合闸及短路过程中绕组稳定性计算
12.The Research and Improvement of High-voltage Transmission Line Microcomputer Reclosing Device;高压输电线路微机重合闸装置的研究与改进
13.The Study of Adaptive Single-phase Reclosing on EHV Transmission Line;超高压输电线路自适应单相重合闸的判据研究
14.transformer overcurrent trip变压器过流跳闸装置
15.Describing of the Handling Process and Brief Analyzing of the Cause of Tripping about the Third Transformer Starting in the Second Substation二降压3号主变压器启动送电后跳闸故障原因及处理过程浅析
16.Single-phase adaptive reclose of EHV transmission line based on shunt reactor current identification基于并联电抗器电流判别的超高压输电线路单相自适应重合闸
17.current-on contact开关［触点］电流， 合闸电流
18.New Algorithm for Single-phase Adaptive Reclosure of EHV Transmission Lines with Shunt Reactor带并联电抗器的超高压输电线路单相自适应重合闸新算法
相关短句/例句
closing overvoltage合闸过电压
1.In this paper,exploration is made upon the detailed process of overvoltage generation during capacitor operation,and the viewpoint thatclosing overvoltage is the main cause of capacitor switching overvoltage is proposed.对电容器操作过电压产生的具体过程进行了探讨,提出了合闸过电压是构成电容器操作过电压的主要原因的观点。
2.The computation of power frequency overvoltage,secondary arc current,3 phaseclosing overvoltage and single phase reclosing overvoltage in Yangcheng Jiangsu 500 kV power transmission system by EMTP is presented in this paper.本文对阳城———江苏 5 0 0kV输电系统的工频过电压、潜供电流以及三相合闸、单相重合闸过电压利用EMTP进行了计算。
3)overvoltage tripping过电压跳闸
4)closing over-voltage合闸过电压
1.Calculation and analysis ofclosing over-voltage of circuit-breaker断路器合闸过电压计算与分析
5)trip overvoltage跳闸过电压
1.The results are validated by PSCAD/EMTDC simulation,and the simulation results also show that thetrip overvoltage is mainly related to the line current and the power establishing width angle when tripping occurs.仿真计算验证了理论分析的正确性,同时表明,跳闸过电压主要与跳闸时刻流过断路器的线路电流和电源摆开角有关,合闸过电压与合闸前的残余电压有关。
6)coincide brake over-voltage重合闸过电压
延伸阅读
电力系统合闸过电压电力系统合闸过电压energization overvolt-age in electric power systemdianllx{tong触Zha guodlonyo电力系统合阐过电压(energization Over-voltage in electrie卯wer system)主要是指断路器合闸空载线路导致瞬态振荡所引起的过渡过程过电压。是决定330kV及以上的超高压电力系统操作冲击绝缘水平的主要依据。合闸过电压与合闸前线路上残留电压的大小、极性以及合闸时电派的相角有关。因为这些t均为随机变量，所以合闸过电压具有明显的随机性.若合闸前线路上有较高的残留电压，又恰好合闸于极性与线路残留电压相反的电源电压时，合闸过电压最大。三相重合闸过电压(尤其是不成功的三相重合闸过电压)要比单相重合闸或无故障正常合闸过电压高。合闸过电压还与系统容t、线路长度及结构有关，电源容盘小、线路长，合闸后的工频过电压商.合闸过电压更高;空载长线路沿线各点的合闸过电压幅值不等，对于无高压并联电抗器和进雷器的线路，最大过电压出现在线路的开路端，线路两端装有进苗器或高压并联电抗器时，最大过电压出现在线路的中部。限制合闸过电压的主要措施有高压并联电扰器、进雷器和断路器并联合闸电阻，这些措施应综合考虑。高压并联电抗器主要是限制工频过电压。金属氧化物避雷器可以释放过电压的能t，将过电压限制到一定的水平，但它有一定的保护距离，靠近避雷器处的过电压可以限制得较低，随着离进雷器处的距离增大，限制效果逐渐减小。断路器并联数百欧姆的合闸电阻，可以将全线路的合闸过电压限制到较低的水平，但断路器加装合闸电阻使操作机构复杂，不仅使造价增大，而且使运行可靠性降低。对于超高压和特高压的长线路，首先应采用线路安装高压并联电抗器限制工预过电压，然后应用线路安装金属饭化物避雷器将合闸过电压限制到允许的水平，如以上措施还不能满足要求，再增加断路器加装合闸电阻的措施。正在研制断路器受控合闸装t，即控制断路器在两端电位差为零或接近零时完成合闸，以使合闸过波过程降低至最弱程度，这对特高压交流摘电是必要的。该装置已在加章大运行，其长期使用可靠性还裕进一步在运行中检验。
