自适应重合闸可显著提高供电可靠性。
Adaptive reclose can remarkably enhance power system reliability.
因此研究特高压输电线路的继电保护新原理及自适应重合闸技术具有重要的现实意义。
Therefore the research on new principle of protection and adaptive auto-reclosing technique for UHV transmission line is of great practical significance.
同步关合是指断路器动、静触头在系统电压波形的指定相角处关合，以减小合闸操作的过电流和过电压的一种智能操作技术。
Synchronous closing is an intelligent control technique. It can make the moving and stationery contact-header of circuit breaker to close on the specified phase angle of the power system voltage wave.
可靠的自适应重合闸技术不仅能提高系统的供电可靠性，而且对保证整个电力系统的安全稳定和经济运行都有十分重要的意义。
Reliable adaptive reclosing technique can not only improve the reliability of the power system, but also play an important role in security, stability and economic operation of the power system.
提出一种单相自适应重合闸的新方案。
A new scheme used in single-phase adaptive reclosure is proposed.
断路器合闸电阻有时价格昂贵且不可靠。
Circuit breaker closing resistors sometimes are expensive and unreliable.
钻井作业期间不能合闸。
有时合闸操作完成后合闸接触器仍不能返回。
After the closing operation the closing contactor sometimes cannot recover.
介绍了低压电器产品试验中选相合闸开关的应用。
The application of phase selection close switch in low voltage electrical apparatus test was introduced.
一般情况下，线路故障跳闸后重合闸越快，效果越好。
Under normal circumstances, line fault reclosing after tripping sooner, the better.
本继电器可以作为超高压输电线路重合闸装置的选相元件。
This relay can be used as a new protection component to detect faulty phase for ultra-high voltage transmission lines.
瞬时故障时在最佳重合时刻分相重合，永久故障时闭锁重合闸。
Further more, the switches reclose at optimal reclosing time by phase for instantaneous fault and shut down reclosure for permanent fault.
目前广泛采用的选相分合闸机构，大多由电子线路实现上述功能。
Now these functions are realized by electronic circuit and got used widely in phase selection devices.
并从理论上研究了三相非同期合闸过电压比同期合闸时高的原因。
The reason why the overvoltage caused by non-simultaneous closing of the three phases is higher than that in the case of simultaneous closing is also explained theoretically.
本文利用数字计算机研究了超高压电力系统的空载长线合闸过电压。
This paper studies closing overvoltage on unloaded line in EHV power system by means of digital computer.
在额定控制电源电压低于35%时，欠电压脱扣器应防止断路器合闸。
At rated control supply voltage less than 35% under-voltage should prevent breaker from closing.
在额定控制电源电压低于35%时，欠电压脱扣器应防止断路器合闸。
In case of the operation voltage less than 35% of the rated voltage, the under-voltage should prevent the breaker from closing.
接地开关处于合闸状态，手车不能推到工作位置，防止带接地开关合闸。
When the grounding switch is located at the switching-on state, the trolley cannot be entered into the working position to prevent switching on the grounding switch.
如果接地开关处于合闸状态，手车向工作位置的操作必须被机械联锁锁定。
With the earthing switch closed, insertion of the withdrawable part towards the service position must be blocked after only two clockwise turns of the crank.
电网中运行的线路保护装置的重合闸误动作，将会引起人身以及电网事故。
The incorrect reclose of line protective devices in electric power system will result in personal injuries and system accidents.
这就要求并列合闸时断路器两侧电压的幅值差、频率差和相角差都足够小。
This means the difference of magnitude, frequency and phase of the voltages between the two sides of breaker must be small enough.
分析了断路器绝缘特性和合闸时间分散性对并联电容器组同步关合的影响；
This paper analyses the influences of the closing time scatter and dielectric characteristic of circuit breaker on synchronous energizing shunt capacitor banks.
断路器跳合闸线圈烧毁事故是变电站综合自动化系统在运行中较普遍的现象。
Circuit breaker tripping coil burning is a relatively frequent accident for the operation of substation comprehensive automation system.
叙述了西门子馈线保护在自动重合闸整定中存在的问题，并提出了解决的方法。
Narrate the problems existing in the automatic reclosure parameter setting of SIEMENS feeder protection employed in the substations by our company and provide the methods to solve the problems.
通过对线-变串中开关重合闸问题的分析，找出了存在的问题，提出了改进意见。
Through analyzing the reclosing of circuit breaker in middle of line-transformer strings, the existing problems were figured out and the modification measures were put forward.
对于旧站改造的“四遥”变电站，由于设备的限制，同期合闸无法实现遥控操作。
For the retrofitting substations, the remote switch on operation with synchronism check can not be carried out because of the equipment limitation.
针对单相重合闸与三相重合闸时系统振荡的特点，提出了新的距离加速保护方案；
In allusion to the characters of system oscillation during single-phase recloser and three-phase recloser, the author put forward a new distance protection accelerating scheme.
这种要求已促使研制出具有不仅能快速分闸而且也能快速重合闸的断路器操动机构。
This requirement has brought about the development of breaker operating mechanisms that are not only high-speed opening, but are also high-speed reclosing.
这种要求已促使研制出具有不仅能快速分闸而且也能快速重合闸的断路器操动机构。
This requirement has brought about the development of breaker operating mechanisms that are not only high-speed opening, but are also high-speed reclosing.
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