SVG靜止無(wú)功發(fā)生器

SVG靜止無(wú)功發(fā)生器應(yīng)用場(chǎng)合：

 凡是安裝有低壓變壓器地方及大型用電設(shè)備旁邊都應(yīng)該配備無(wú)功補(bǔ)償裝置（這是國(guó)家電力部門的規(guī)定），特別是那些功率因數(shù)較低的工礦、企業(yè)、居民區(qū)必須安裝。大型異步電機(jī)、變壓器、電焊機(jī)、沖床、車床群、空壓機(jī)、壓力機(jī)、吊車、冶煉、軋鋼、軋鋁、大型交換機(jī)、電灌設(shè)備、電氣機(jī)車等尤其需要。居民區(qū)除白熾燈照明外，空調(diào)、冷凍機(jī)等也都是無(wú)功功率不可忽視的耗用對(duì)象。農(nóng)村用電狀況比較惡劣，多數(shù)地區(qū)供電不足，電壓波動(dòng)很大，功率因數(shù)尤其低，加裝補(bǔ)償設(shè)備是改善供電狀況、提高電能利用率的有效措施。

SVG靜止無(wú)功發(fā)生器應(yīng)用優(yōu)勢(shì)：

1、補(bǔ)償方式：國(guó)內(nèi)的無(wú)功補(bǔ)償裝置基本上是采用電容器進(jìn)行無(wú)功補(bǔ)償，補(bǔ)償后的功率因素一般在0.8-0.9左右。SVG采用的是電源模塊進(jìn)行無(wú)功補(bǔ)償，補(bǔ)償后的功率因素一般在0.98以上，這是目前國(guó)際上最先進(jìn)的電力技術(shù)。2、補(bǔ)償時(shí)間： 國(guó)內(nèi)的無(wú)功補(bǔ)償裝置完成一次補(bǔ)償最快也要200毫秒的時(shí)間，SVG在5-20毫秒的時(shí)間就可以完成一次補(bǔ)償。無(wú)功補(bǔ)償需要在瞬時(shí)完成，如果補(bǔ)償?shù)臅r(shí)間過長(zhǎng)會(huì)造成該要無(wú)功的時(shí)候沒有，不該要無(wú)功的時(shí)候反而來(lái)了的不良狀況；

　　3、有級(jí)無(wú)極： 國(guó)內(nèi)的無(wú)功補(bǔ)償裝置基本上采用的是3—10級(jí)的有級(jí)補(bǔ)償，每增減一級(jí)就是幾十千法，不能實(shí)現(xiàn)精確的補(bǔ)償。SVG可以從0.1千法開始進(jìn)行無(wú)極補(bǔ)償，完全實(shí)現(xiàn)了精確補(bǔ)償；

　　4、諧波濾除： 國(guó)內(nèi)的無(wú)功補(bǔ)償裝置因?yàn)椴捎玫氖请娙菔?，電容本身?huì)放大諧波，所以根本不能濾除諧波，SVG不產(chǎn)生諧波更不會(huì)放大諧波，并且可以濾除50%以上的諧波；

　　5、使用壽命： 國(guó)內(nèi)的無(wú)功補(bǔ)償裝置一般采用接觸器或可控硅控制，造成使用壽命較短，一般在三年左右，自身?yè)p耗大而且要經(jīng)常進(jìn)行維護(hù)。SVG使用壽命在十年以上，自身?yè)p耗極小且基本上不要維護(hù)。

SVG static var generator

Application of SVG static var generator:

All installation of low voltage transformer and large electrical equipment should be equipped with side reactive power compensation device (which is stipulated by the state power sector), especially those of lower power factor, industrial and mining enterprises, residential areas must be installed. Large asynchronous motor, transformer, electric welding machine, punching machine, lathe, air compressor, press machine, crane, smelting, steel rolling, rolling aluminum, large switches, electric pumping equipment, especially electrical locomotive. In addition to incandescent lighting, residential areas, air conditioning, refrigerators and other reactive power is not to be ignored consumption targets. The power consumption in rural areas is very bad, the power supply is not enough in most areas, the voltage fluctuation is great, and the power factor is especially low. The installation of compensation equipment is an effective measure to improve the power supply status and improve the utilization of power.

Application advantages of SVG static var generator:

1, compensation: domestic reactive power compensation device basically uses capacitor for reactive power compensation, the power factor after compensation is usually about 0.8-0.9. SVG adopts the power module to carry out reactive power compensation. After compensation, the power factor is usually over 0.98, which is the most advanced power technology in the world. 2, compensation time: the domestic reactive power compensation device to complete a compensation, the fastest also 200 milliseconds time, SVG in 5-20 milliseconds time can complete a compensation. Reactive power compensation needs to be completed instantaneously. If the compensation time is too long, there will be no time when the reactive power is not needed;

3, there is no level: reactive power compensation device in China basically is used in 3 - level 10 level compensation per unit level is tens of law, can not achieve accurate compensation. SVG can start from the 100 method without polarity compensation, and fully realize the accurate compensation;

4, harmonic filtering: reactive power compensation device in China since the introduction of the capacitor, capacitor itself will enlarge harmonics, so no harmonic filter, SVG does not produce harmonic nor harmonic amplification, and harmonic filter more than 50%;

5 、 service life: the domestic reactive power compensation device generally adopts contactor or SCR control, resulting in shorter service life, generally in about three years, its own large losses, but also to maintain regularly. SVG has a service life of over ten years, with minimal loss and virtually no maintenance.