技術資料 實時動態(tài)無功功率補償器
Technical Information
Reactive Power
Compensator
?
DYNACOMP
1SXF060004C2902 11-20082 DYNACOMP?
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(cid:4323)(cid:1737)
(cid:3657)(cid:2392)(cid:33)(cid:85)(cid:106)(cid:110)(cid:102) [ms]
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(cid:2881)(cid:1737)
Dynacomp?與電容器的機電切換比較
傳統(tǒng)的電容器：機電式切換 Dynacomp?：頂級的動態(tài)補償器
切換時的瞬變現(xiàn)象 切換時無瞬變現(xiàn)象
傳統(tǒng)的電容組帶有接觸器，在需要無功功率的時候進行切換。但切換 Dynacomp?是以電子切換裝置而非接觸器安裝的。在要求切換時無瞬變
瞬間的精確性經(jīng)常變動并且難以控制。并產(chǎn)生強大的瞬變電流。干擾 現(xiàn)象的應用場合，它是最佳的選擇。它不會干擾高敏感度的網(wǎng)絡，也
網(wǎng)絡，危及觸頭并增加電容器上的應力。電流峰值達到3640A，約為標 不會影響附近的設備。下圖顯示的是使用了Dynacomp?切換相同的無功
稱峰值304A的12倍。 功率。電流峰值僅為304A，相當于標稱峰值。
(cid:1737)(cid:4323)
(cid:1737)(cid:2881)
]V[
(cid:4323)(cid:1737)
(cid:3657)(cid:2392)(cid:33)(cid:85)(cid:106)(cid:110)(cid:102) [ms]
]A[
(cid:2881)(cid:1737)
(cid:1737)(cid:4323)
(cid:1737)(cid:2881)
使用接觸器的轉流電容柜切換的電流波形 使用Dynacomp?切換時的電流波形
反應時間長 反應時間快
傳統(tǒng)的電容器使用機電方式切換，功率因數(shù)修正系統(tǒng)安裝的是放電電 Dynacomp?強大的控制和它的切換原理讓功率因素修正的動態(tài)反應時
阻。它是通過減少了電容器和電網(wǎng)之間的電壓差，相應地減弱瞬變的 間少于80毫秒，電壓降的補償時間少于20毫秒。如果外加一個外部信
強度。而電容器放電需要數(shù)秒的時間，這就大大地限制了系統(tǒng)的反應 號，更可達到實時響應的效果。
時間，而且還不能抑制瞬變。
短暫的使用壽命 長久的使用壽命
接觸器的使用壽命短，需要經(jīng)常更換。這種系統(tǒng)需要花費大量的維護 使用無瞬變的切換(無電弧、無活動部件)方式、并結合自我治療的電
精力。 容器，Dynacomp?可以保證非常長久的使用壽命，對切換的操作次數(shù)
沒有任何限制。Dynacomp? VS Electromechanical
switching of capacitors
Electromechanical switching The Dynacomp?: the top-class dynamic
of capacitors compensator
Transients at switching Transient free switching
Conventional banks with contactors are switched on when reactive The Dynacomp?, fitted with electronic switches instead of contactors,
power is needed, but the precise instant of switching is variable is the perfect choice in applications where transient-free switching
and not controlled. This has the consequence that the switching of is required. It will not cause disturbances to sensitive networks or
the capacitors results in a big transient. This transient disturbs the neighbouring equipment. The figure below shows the switching of the
net, is dangerous for the contactors and increases the stress on the same step but with the static switch of the Dynacomp?. The current
capacitors. The disturbance created in the voltage waveform could reaches only 04 A peak, i.e. the nominal value.
perturb sensitive equipment. This is shown on the figure below, where
86 kvar are switched on by contactors. The current reaches 640 A
peak, approximately twelve times the nominal 04 A peak.
VOLTAGE VOLTAGE
CURRENT CURRENT
Current waveform when switching a conventional Current waveform when switching a Dynacomp?
bank with contactors (transient)
Slow response time Fast response time
Electromechanically switched power factor correction systems are The powerful control of the Dynacomp? and its switching concept
fitted with discharge resistors. This allows reducing the voltage allows dynamic response times less than 80ms for power factor
difference between the capacitors and the network and consequently correction, less than 20ms for voltage drops compensation and
the magnitude of the transients. Discharging the capacitors takes instantaneous if an external signal is available.
several seconds and tremendously limits the response time of such
system, without suppressing the transients. Long life
The transient free switching (with no electric arc, no moving parts)
combined with the self healing capacitors used in the Dynacomp?
Limited life
guarantees a very long life of the system without any limitation in the
Contactors have limited lifetimes and need to be replaced frequently.
number of switching operations.
Such systems also require important maintenance efforts.
DYNACOMP? 產(chǎn)品概述
Product Description
Dynacomp?: 原理 Dynacomp?: principle
Three phase
Dynacomp?基本上以電容和電抗組成，由功率電子 Dynacomp? circuit The Dynacomp? is basically a reactive power filter circuit (capacitors
操控。圖中顯示了三相Dynacomp?的簡單線路圖。 + reactors)switched on the network by solid state power
electronics, without any moving part. A three-phase Dynacomp?
Dynacomp?可為低壓設備提供至少690 V的標稱電
circuit is represented below. The Dynacomp? can compensate
壓補償。
low voltage equipment for nominal voltages up to at least 690V.
硅可控整流器會于電容電流的自然零交叉發(fā)動。因 The thyristors are fired at the natural zero crossing of the
capacitive current. As a result, capacitors are connected to the
此，電容于電網(wǎng)投切時不會產(chǎn)生瞬變。這控制只容
network without transients.
許完整的電流變換，所以Dynacomp?不會產(chǎn)生諧 The control is such that only complete alternations of the current
波。 are allowed. This insures that no harmonics are generated by the
Dynacomp?.
Dynacomp?: 優(yōu)點 Dynacomp?: advantages
無瞬變切換 Transient free switching
快速切換(≤1周期) Fast switching (≤1 cycle)
可吸收諧波 Harmonics absorption
結合了電容器和無功功率控制器的技術 Combination of ABB Capacitors and Reactive
Power Control Technology
ABB半導體等級和現(xiàn)場經(jīng)驗 ABB semiconductor rating and field experience
ABB微處理器基于Dynacomp?控制器 ABB micro-processor based Dynacomp?
Controller
ISO 9001認證 ISO 9001 certification
ISO 14001認證 ISO 14001 certification
Dynacomp?: 說明 Dynacomp?: description
Dynacomp?包括電容器、電抗器、 The Dynacomp? consists in capacitors,