一、遲相運(yùn)行
1、 Delayed operation
通常,發(fā)電機(jī)勵(lì)磁系統(tǒng)處于過(guò)勵(lì)磁狀態(tài)時(shí),既向系統(tǒng)輸送有功功率又輸送無(wú)功功率,功率因數(shù)為正,這種運(yùn)行狀態(tài)稱為遲相運(yùn)行,也稱滯相運(yùn)行。
Usually, when the generator excitation system is in an overexcited state, it transmits both active and reactive power to the system, with a positive power factor. This operating state is called delayed phase operation, also known as delayed phase operation.
二、進(jìn)相運(yùn)行
2、 Leading phase operation
減少發(fā)電機(jī)勵(lì)磁電流,使發(fā)電機(jī)電勢(shì)減小,功率因數(shù)角就變?yōu)槌暗?,發(fā)電機(jī)負(fù)荷電流產(chǎn)生助磁電摳反應(yīng),發(fā)電機(jī)向系統(tǒng)輸送有功功率,但吸收無(wú)功功率,這種運(yùn)行狀態(tài)稱為進(jìn)相運(yùn)行,
Reduce the excitation current of the generator, reduce the generator potential, and the power factor angle becomes advanced. The load current of the generator generates a magnetic and electric response, and the generator delivers active power to the system but absorbs reactive power. This operating state is called leading phase operation,
三、調(diào)相運(yùn)行
3、 Phase modulation operation
調(diào)相運(yùn)行,是指發(fā)電機(jī)不發(fā)出有功功率,只用來(lái)向電網(wǎng)輸送感性無(wú)功功率的運(yùn)行狀態(tài),從而起到調(diào)節(jié)系統(tǒng)無(wú)功、維持系統(tǒng)電壓水平的作用。發(fā)電機(jī)遲相、進(jìn)相、調(diào)相的區(qū)別和聯(lián)系
Phase modulation operation refers to the operating state of a generator that does not emit active power but only transmits inductive reactive power to the power grid, thereby regulating system reactive power and maintaining system voltage level. Differences and connections between delayed phase, leading phase, and phase modulation of generators
同步發(fā)電機(jī)的幾種并網(wǎng)運(yùn)行狀態(tài)
Several grid connected operation states of synchronous generators
1、遲相運(yùn)行(常態(tài)運(yùn)行)---發(fā)電機(jī)向電網(wǎng)同時(shí)送出有功功率和無(wú)功功率(容性}.
1. Delayed phase operation (normal operation) - The generator simultaneously sends active and reactive power to the power grid (capacitive)
2、進(jìn)相運(yùn)行(超前運(yùn)行)----發(fā)電機(jī)向電網(wǎng)送出有功功率,吸收電網(wǎng)無(wú)功功率。
2. Leading phase operation (leading operation) - The generator sends active power to the grid and absorbs reactive power from the grid.
3、,調(diào)相運(yùn)行---發(fā)電機(jī)吸收電網(wǎng)的有功功率維持同步運(yùn)轉(zhuǎn),向電網(wǎng)送出無(wú)功功率
3. Phase modulation operation - the generator absorbs active power from the power grid to maintain synchronous operation and sends reactive power to the grid
(容性).
(Compatibility)
4、電動(dòng)機(jī)運(yùn)行(非正常運(yùn)行)-發(fā)電機(jī)同時(shí)吸收電網(wǎng)的有功功率和無(wú)功功率維持同步運(yùn)行前三種運(yùn)行狀態(tài)都是同步發(fā)電機(jī)的正常運(yùn)行狀態(tài),第 2、第4種運(yùn)行狀態(tài)應(yīng)避免,
4. Motor operation (abnormal operation) - The generator absorbs both active and reactive power from the power grid to maintain synchronous operation. The first three operating states are the normal operating states of the synchronous generator, and the second and fourth operating states should be avoided,
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