电力系统中所采取的电抗柜串联电抗器常见的有串联电抗器和并联电抗器.串联电抗器主要用来限制短路电流,也有在滤波器中与电容器串联或并联用来限制电网中的高次谐波. 220kV、110kV、35kV、10kV电网中的电抗器是用来吸收电缆线路的充电容性无功的.可以通过调整并联电抗器的数量来调整运行电压.超高压并联电抗器有改善电力系统无功功率有关运行状况的多种功能,电阻柜主要包括:

The cabinet reactance in the power system of series reactor are common series reactor and shunt reactor. A series reactor is mainly used to limit the short-circuit current, but also in the filter in series or parallel with the capacitor to limit the high frequency harmonics. 220kV, 110kV, 35kV, 10kV in the grid reactor is used to absorb the charging cable line. Reactive power. Can adjust the operating voltage by adjusting the number of shunt reactors. Many functions of shunt reactors have improved power system reactive power on operation status, including the resistance of cabinet:

(1)轻空载或轻负荷线路上的电容效应,以降低工频暂态过电压.

(1) the capacitive effect on the light load or light load lines to reduce the power frequency transient overvoltage

(2)改善长输电线路上的电压分布.

(2) improve the voltage distribution of long distance transmission line

(3)使轻负荷时线路中的无功功率尽可能就地平衡,防止无功功率不合理流动同时也减轻了线路上的功率损失.

(3) the light load line in the reactive power balance on the spot as far as possible, to prevent the reactive power flow of the dead is not reasonable but also reduce the power loss on the line.

(4)在大机组与系统并列时降低高压母线上工频稳态电压,便于发电机同期并列.

(4) in parallel units and systems to reduce the dead power steady voltage bus, for generator synchronization.

(5)防止发电机带长线路可能出现的自励磁谐振现象.直流电抗器

(5) to prevent the self excitation resonance generator with long line DC reactor may occur.

(6)当采用电抗器中性点经小电抗接地装置时,还可用小电抗器补偿线路相间及相地电容,以加速潜供电流自动熄灭,便于采用.

(6) when the reactor neutral point is earthed by small reactance, the small reactor can compensate the phase and ground capacitance of the line, so as to speed up the automatic extinction of the secondary supply current and make it easy to adopt

电抗器的接线分串联和并联两种方式.串联电抗器通常起限流作用,并联电抗器经常用于无功补偿.

The connection of reactor is divided into series and parallel two ways. Series reactor usually acts as current limiting, shunt reactor is often used in reactive power compensation

1.半芯干式并联电抗器:在超高压远距离输电系统中,连接于变压器的三次线圈上.用于补偿线路的电容性充电电流,限制系统电压升高和操作过电压,保证线路可靠运行.

The 1. half core dry-type shunt reactors in EHV long distance transmission system, the three secondary coil connected to the transformer. The capacitive compensation circuit for charging current limiting system voltage and over-voltage, ensure reliable circuit operation.

2.半芯干式串联电抗器:安装在电容器回路中,在电容器回路投入时起.

2. half core dry series reactor: installed in the capacitor circuit, when the capacitor circuit is put into operation