Improve the capacity of gas generator with capacitive load;

對(duì)負(fù)載進(jìn)行改造，使容性負(fù)載的超前功率因數(shù)變大。

The load is reformed to increase the leading power factor of capacitive load.

1、提高發(fā)電機(jī)組帶容性負(fù)載能力

1. Improve the capacitive load capacity of generator set

根據(jù)容性負(fù)載對(duì)發(fā)電機(jī)和調(diào)壓器產(chǎn)生的影響，我們可以從以下幾個(gè)方面來(lái)提高發(fā)電機(jī)組帶容性負(fù)載能力：

According to the influence of capacitive load on generator and voltage regulator, we can improve the capacitive load capacity of generator set from the following aspects:

1.1 容量放大設(shè)計(jì)

1.1 capacity amplification design

對(duì)于同功率發(fā)電機(jī)組，發(fā)電機(jī)容量越大，其帶容性負(fù)載能力將更強(qiáng)。由于數(shù)據(jù)項(xiàng)目中容性負(fù)載存在，因此在選擇數(shù)據(jù)發(fā)電機(jī)組時(shí)，發(fā)電機(jī)容量將會(huì)是非常重要的參數(shù)之一。

For the same power generator set, the larger the generator capacity is, the stronger the capacitive load capacity will be. Due to the existence of capacitive load in the data center project, the generator capacity will be one of the very important parameters when selecting the generator set in the data center.注：發(fā)電機(jī)容量參數(shù)與發(fā)電機(jī)溫升息息相關(guān)，只有在相同溫升條件下比較發(fā)電機(jī)容量才有意義。不同溫升情況下將不能比較發(fā)電機(jī)容量的大小。

Note: the generator capacity parameter is closely related to the generator temperature rise. It is meaningful to compare the generator capacity only under the same temperature rise conditions. The generator capacity cannot be compared under different temperature rise conditions.

1.2 加強(qiáng)發(fā)電機(jī)散熱

1.2 strengthen heat dissipation of generator

一方面，從安裝和應(yīng)用角度，在安裝發(fā)電機(jī)組時(shí)，保障充分的冷空氣冷卻發(fā)電機(jī)；另一方面，從發(fā)電機(jī)設(shè)計(jì)和生產(chǎn)的角度，發(fā)電機(jī)應(yīng)通過(guò)提高空氣冷卻發(fā)電機(jī)散熱效率的通風(fēng)結(jié)構(gòu)和方法，使冷卻空氣從發(fā)電機(jī)的若干個(gè)進(jìn)風(fēng)口進(jìn)入定子和轉(zhuǎn)子之間的氣隙，再經(jīng)過(guò)由鐵芯與繞組的間隙形成的通風(fēng)道,進(jìn)入導(dǎo)流板與鐵芯背面之間形成的扁平流道，之后流入發(fā)電機(jī)內(nèi)部空腔，再經(jīng)由出風(fēng)口流出。

On the one hand, from the perspective of installation and application, ensure sufficient cold air to cool the generator when installing the generator set; On the other hand, from the perspective of generator design and production, through the ventilation structure and method of improving the heat dissipation efficiency of air-cooled generator, the generator should make the cooling air enter the air gap between stator and rotor from several air inlets of the generator, and then enter the flat flow channel formed between deflector and the back of iron core through the ventilation channel formed by the gap between iron core and winding, Then it flows into the internal cavity of the generator and then flows out through the air outlet.

冷卻空氣通過(guò)扁平流道時(shí),能以較高速度橫掠鐵芯背面，從而加強(qiáng)了鐵芯背面的散熱,有效降低了鐵芯和繞組的溫度。使用導(dǎo)熱性良好的材料制成導(dǎo)流板,并增大了散熱面積，有效提升了散熱的效果。

When the cooling air passes through the flat channel, it can cross the back of the iron core at a high speed, so as to strengthen the heat dissipation on the back of the iron core and effectively reduce the temperature of the iron core and winding. The deflector is made of materials with good thermal conductivity, which increases the heat dissipation area and effectively improves the heat dissipation effect.

1.3 智能式電壓調(diào)壓器

1.3 intelligent voltage regulator

發(fā)電機(jī)在帶容性負(fù)載時(shí)，容性負(fù)載將會(huì)產(chǎn)生勵(lì)磁電流，容性負(fù)載越大，超前功率因數(shù)越小，其產(chǎn)生助磁電流越大。

When the generator is equipped with capacitive load, the capacitive load will produce excitation current. The larger the capacitive load is, the smaller the leading power factor is, and the larger the flux current is.

即使在調(diào)壓器給出的勵(lì)磁電流為0時(shí)，發(fā)電機(jī)勵(lì)磁電流都足夠大，此時(shí)調(diào)壓器失去了調(diào)壓的功能，發(fā)電機(jī)電壓將上下波動(dòng)，不受控制。因此智能式電壓調(diào)壓器將能優(yōu)化發(fā)電機(jī)的調(diào)壓功能，并加強(qiáng)發(fā)電機(jī)的帶容性負(fù)載能力。

Even when the excitation current given by the voltage regulator is 0, the excitation current of the generator is large enough. At this time, the voltage regulator loses the function of voltage regulation, and the generator voltage will fluctuate up and down without control. Therefore, the intelligent voltage regulator will optimize the voltage regulation function of the generator and strengthen the capacitive load capacity of the generator.

1.4 PM永磁勵(lì)磁機(jī)

1.4 PM permanent magnet exciter

永磁勵(lì)磁機(jī)將減小容性負(fù)載對(duì)勵(lì)磁電流和調(diào)壓的影響，從而加強(qiáng)發(fā)電機(jī)帶容性負(fù)載能力。

Permanent magnet exciter will reduce the influence of capacitive load on excitation current and voltage regulation, so as to strengthen the capacity of generator with capacitive load.

1.5、發(fā)電機(jī)組控制系統(tǒng)

1.5 generator set control system

由于數(shù)據(jù)備用電源的可靠性是非常重要的，為了提高發(fā)電機(jī)組的可靠性，避免因?yàn)槟鏌o(wú)功保護(hù)或失磁保護(hù)停機(jī)，將控制系統(tǒng)中的逆無(wú)功保護(hù)或失磁保護(hù)設(shè)定為警報(bào)，而取消停機(jī)保護(hù)的功能。保證發(fā)電機(jī)組即使在逆無(wú)功或失磁情況下也不會(huì)出現(xiàn)停機(jī)現(xiàn)象。保證數(shù)據(jù)系統(tǒng)備用電源的可靠性。

Since the reliability of the standby power supply in the data center is very important, in order to improve the reliability of the generator set and avoid shutdown due to reverse reactive power protection or loss of excitation protection, set the reverse reactive power protection or loss of excitation protection in the control system as alarm and cancel the shutdown protection function. Ensure that the generator set will not stop even under the condition of reverse reactive power or loss of excitation. Ensure the reliability of standby power supply of data center system.