AB-SVG 是新靜止無功補(bǔ)償裝置，是無功補(bǔ)償領(lǐng)域技術(shù)應(yīng)用的代表產(chǎn)品。AB-SVG 并聯(lián)于電網(wǎng)中，相當(dāng)于一個(gè)可變的無功電流源，通過調(diào)節(jié)逆變器交流側(cè)輸出電壓的幅值和相位，或者直接控制其交流測(cè)電流的幅值和相位，迅速吸收或者發(fā)出所需要的無功功率，實(shí)現(xiàn)快速動(dòng)態(tài)調(diào)節(jié)無功的目的。當(dāng)采用直接電流控制時(shí)，不僅可以跟蹤補(bǔ)償沖擊型負(fù)載的沖擊電流，而且可以對(duì)諧波電流也進(jìn)行跟蹤補(bǔ)償。利用電力電子逆變技術(shù)產(chǎn)生一個(gè)與被補(bǔ)償對(duì)象大小相等而方向相反的電流，相互抵消，功率因數(shù)可接近1。
產(chǎn)品概述 Product Overview
AB-SVG 是新靜止無功補(bǔ)償裝置，是無功補(bǔ)償領(lǐng)域技術(shù)應(yīng)用的代表產(chǎn)品。AB-SVG 并聯(lián)于電網(wǎng)中，相當(dāng)于一個(gè)可變的無功電流源，通過調(diào)節(jié)逆變器交流側(cè)輸出電壓的幅值和相位，或者直接控制其交流測(cè)電流的幅值和相位，迅速吸收或者發(fā)出所需要的無功功率，實(shí)現(xiàn)快速動(dòng)態(tài)調(diào)節(jié)無功的目的。當(dāng)采用直接電流控制時(shí)，不僅可以跟蹤補(bǔ)償沖擊型負(fù)載的沖擊電流，而且可以對(duì)諧波電流也進(jìn)行跟蹤補(bǔ)償。利用電力電子逆變技術(shù)產(chǎn)生一個(gè)與被補(bǔ)償對(duì)象大小相等而方向相反的電流，相互抵消，功率因數(shù)可接近1。
AB-SVG is a new static reactive power compensation device, which is a representative product in the field of reactive power compensation technology application. AB-SVG is connected in parallel to the power grid and is equivalent to a variable reactive current source, which can quickly absorb or send out the required reactive power by adjusting the amplitude and phase of the AC output voltage of the inverter or directly controlling the amplitude and phase of its AC current measurement to achieve fast dynamic regulation of reactive power. purpose. When direct current control is used, not only the inrush current of the inrush load can be tracked and compensated, but also the harmonic current can be tracked and compensated. The power electronic inverter technology is used to generate a current of equal size and opposite direction to the compensated object to cancel each other, and the power factor can be close to 1.
型號(hào)及其含義 Model number and it s meaning
AB-SVG特點(diǎn) AB-SVG Features
(1) 具備抗諧波功能，更保障系統(tǒng)安全。AB-SVG 是可控電流源，只補(bǔ)償基波無功電流，系統(tǒng)諧波電流不會(huì)造成補(bǔ)償設(shè)備損壞，使其壽命延長，維護(hù)工作量少。同時(shí)避免串電抗的電容器組可能造成的諧波放大，防止系統(tǒng)其他設(shè)備及補(bǔ)償設(shè)備因諧波過電壓而損壞；
(2) 動(dòng)態(tài)連續(xù)平滑補(bǔ)償，更高速的響應(yīng)速度使對(duì)電壓閃變的補(bǔ)償效果更好。AB-SVG 可跟隨負(fù)載變化，動(dòng)態(tài)連續(xù)補(bǔ)償功率因數(shù)，可以發(fā)無功，也可吸收無功，徹底杜絕了無功倒送的情況；
(3) 能夠解決負(fù)荷的不平衡問題；
(4) 不僅不產(chǎn)生諧波，而且能在補(bǔ)償無功功率的同時(shí)動(dòng)態(tài)補(bǔ)償諧波；
(5) 電流源特性，輸出無功電流不受母線電壓影響，含阻抗型特性，輸出電流隨母線電壓線性降低；
(6) 投切時(shí)無暫態(tài)沖擊，無合閘涌流，無電弧重燃，無需放電即可再投；
(7) 維護(hù)量小，運(yùn)行成本低；
(8) 安裝、設(shè)定、調(diào)試簡(jiǎn)便，界面明了清晰。
(1) with anti-harmonic function, to protect the system safety. AB-SVG is a controllable current source, only compensate the fundamental wave reactive current, the system harmonic current will not cause damage to the compensation equipment, make its life longer, less maintenance workload. At the same time to avoid the possible harmonic amplification caused by the capacitor bank of series reactance, to prevent damage to other equipment in the system and compensation equipment due to harmonic overvoltage.
(2) dynamic continuous smooth compensation, higher speed response makes the compensation of voltage flicker better. AB-SVG can follow the load change, dynamic continuous compensation of power factor, can send reactive power, can also absorb reactive power, completely eliminates the reactive power backwards.
(3) It can solve the problem of load imbalance.
(4) Not only does not generate harmonics, but also can dynamically compensate harmonics while compensating reactive power.
(5) current source characteristics, the output reactive current is not affected by the bus voltage, including impedance-type characteristics, the output current decreases linearly with the bus voltage.
(6) no transient shock, no closing inrush, no arc reignition, no discharge can be thrown again.
(7) small maintenance, low operating costs.
(8) Easy installation, setting and commissioning, clear interface.
AB-SVG 與傳統(tǒng)的電容無功補(bǔ)償裝置相比的優(yōu)勢(shì)
Advantages of AB-SVG compared to traditional capacitor reactive power compensation devices
(1) 有級(jí)無極：傳統(tǒng)的電容無功補(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)就是幾十千乏，不能實(shí)現(xiàn)精確的補(bǔ)償。AB-SVG可以從0.1 千乏開始進(jìn)行無極補(bǔ)償，完全實(shí)現(xiàn)了精確補(bǔ)償：而且無論有功無功均能進(jìn)行雙向調(diào)節(jié)，充分適應(yīng)太陽能發(fā)電供電系統(tǒng)負(fù)荷變化大的特點(diǎn)，能交換有功功率，使裝置的性價(jià)比得到更高提升。
(2) 補(bǔ)償方式：采用傳統(tǒng)的電容無功補(bǔ)償裝置進(jìn)行無功補(bǔ)償，補(bǔ)償后的功率因數(shù)一般在0.8-0.9 左右。AB-SVG 采用的是電源模塊進(jìn)行無功補(bǔ)償，補(bǔ)償后的功率因數(shù)一般在0.98 以上；
(3) 補(bǔ)償時(shí)間：采用傳統(tǒng)的電容無功補(bǔ)償裝置進(jìn)行無功補(bǔ)償，完成一次補(bǔ)償最快也要200 毫秒的時(shí)間，AB-SVG 在1-20 毫秒的時(shí)間就可以完成一次補(bǔ)償。無功補(bǔ)償需要在瞬間完成，如果補(bǔ)償?shù)臅r(shí)間過長會(huì)造成該要無功的時(shí)候沒有，不該要無功的時(shí)候反而來了的不良狀況：
(4) 諧波濾除：傳統(tǒng)的電容無功補(bǔ)償裝置采用的是電容電抗式，可以濾除某些頻率的諧波，AB-SVG 不產(chǎn)生諧波更不會(huì)放大諧波，并且可以濾除更多的諧波；
(5) 使用壽命：傳統(tǒng)的電容無功補(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，自身損耗大而且要經(jīng)常進(jìn)行維護(hù)。AB-SVG 使用壽命在十年以上，自身損耗極小且基本上免維護(hù)。
(1) There are stages without poles:The traditional capacitor reactive power compensation device basically adopts 3-10 levels of graded compensation, and each level of increase or decrease is tens of kilowatts, which cannot achieve accurate compensation.
AB-SVG can start from 0.1 kilowatts for induction compensation, which completely achieves accurate compensation: Moreover, it can be adjusted in both directions regardless of active and reactive power, fully adapts to the characteristics of solar power supply system with large load changes, and can exchange active power. The cost performance of the device has been improved.
(2) Compensation method: The traditional capacitor reactive power compensation device is used for reactive power compensation, and the power factor after compensation is generally around 0.8-0.9. AB-SVG adopts the power module for reactive power compensation, and the power factor after compensation is generally above 0.98.
(3) Compensation time: It takes 200 milliseconds at the earliest to complete one compensation when using traditional capacitor reactive power compensation device for reactive power compensation, but AB-SVG can complete one compensation in 1-20 milliseconds. The reactive power compensation needs to be completed in an instant, if the compensation time is too long, it will cause the bad situation that there is no reactive power when it should be, but it comes when it should not.
(4) harmonic filtering: the traditional capacitor reactive power compensation device uses capacitive reactance type, which can filter out harmonics of certain frequencies, AB-SVG does not produce harmonics more than amplify harmonics, and can filter out more harmonics.
(5) Service life: The traditional capacitor reactive power compensation device generally adopts contactor or SCR control, resulting in a short service life of about three years, with large loss and frequent maintenance. AB-SVG has a service life of more than ten years, with minimal loss and basically maintenance-free.
主要技術(shù)參數(shù) Main technical parameters
(1) 額定工作電壓：6kV，10kV，35kV；
(2) 額定容量：±0.5-±5Mvar；
(3) 輸出無功范圍：從感性額定無功到容性額定無功范圍內(nèi)連續(xù)全范圍調(diào)節(jié)；
(4) 控制器響應(yīng)時(shí)間：≤ 1ms；
(5) 輸出電壓總諧波畸變率( 并網(wǎng)前)：≤ 4%；
(6) 輸出電壓總諧波畸變率( 并網(wǎng)后)：≤ 3%；
(7) 輸出電流總諧波畸變率THD：≤ 3%；
(8) 輸出電壓不對(duì)稱度：≤ 3%；
(9) 效率：≥ 98%；
(10) 運(yùn)行溫度：-20℃ -+40℃；
(11) 貯存溫度：-40℃ -+65℃；
(12) 相對(duì)濕度：月平均值不大于90%(25℃ )，無凝露；
(13) 海拔高度：<5000m；
(14) 地震烈度：8 度。
(1) Rated operating voltage: 6kV, 10kV, 35kV.
(2) Rated capacity: ±0.5 - ±5Mvar.
(3) Output reactive power range: continuous full range adjustment from inductive rated reactive power to capacitive rated reactive power range.
(4) Controller response time: ≤ 1ms.
(5) output voltage total harmonic distortion rate (before grid connection): ≤ 4%.
(6) output voltage total harmonic distortion rate (after grid connection): ≤ 3%.
(7) output current total harmonic distortion rate THD: ≤ 3%.
(8) output voltage asymmetry: ≤ 3%.
(9) efficiency: ≥ 98%.
(10) operating temperature: -20 ℃ - +40 ℃ .
(11) storage temperature: -40 ℃ - +65 ℃ .
(12) relative humidity: monthly average not more than 90% (25℃ ), no condensation.
(13) Altitude: <5000m.
(14) Seismic intensity: 8 degrees.
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