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UNITROL 5000 模塊化 備用電流調(diào)節(jié)器特點(diǎn):
產(chǎn)品概述
UNITROL 5000被設(shè)計(jì)成一個(gè)模塊化的“積木系統(tǒng)"。超過80%的系統(tǒng)可以由經(jīng)過型式測試的系統(tǒng)組件制成。
這保證了更高的質(zhì)量，使更短的交貨時(shí)間成為可能。電源部分由一個(gè)或多個(gè)可控硅電源變換器、交流或直流側(cè)的勵(lì)磁斷路器、勵(lì)磁閃動(dòng)電路和帶撬棍的固態(tài)勵(lì)磁系統(tǒng)組成。
由于額外的備用電流調(diào)節(jié)器，高可用性
為了進(jìn)一步增加勵(lì)磁系統(tǒng)的可用性，除了電壓調(diào)節(jié)器(AUTO)和勵(lì)磁電流調(diào)節(jié)器(MAN)外，還可以使用獨(dú)立的電流調(diào)節(jié)器(帶有電源、測量和門控制電路的單獨(dú)裝置)。由于對所有非活動(dòng)調(diào)節(jié)器的后續(xù)控制，在活動(dòng)調(diào)節(jié)器失效的情況下，可以保證平滑切換到準(zhǔn)備操作的調(diào)節(jié)器通道。
內(nèi)部ARCnet®現(xiàn)場總線減少布線
系統(tǒng)內(nèi)的數(shù)據(jù)交換，例如在穩(wěn)壓器、電源組件和接口設(shè)備之間的數(shù)據(jù)交換，通過串行ARCnet總線進(jìn)行。
額外的接口或控制面板可以通過光鏈路定位和操作到幾千米的距離。強(qiáng)大可靠的電源轉(zhuǎn)換器
UNITROL 5000使用DCS 500系列緊湊型電源轉(zhuǎn)換器或UNL 13300型電源轉(zhuǎn)換器或Verithyr電源轉(zhuǎn)換器。并聯(lián)電源變換器的類型和數(shù)量是根據(jù)所需的磁場電流、上限電壓和客戶所需的占空比來確定的。
以下選項(xiàng)可用:
?自然或強(qiáng)制冷卻
?冗余風(fēng)扇
?在系統(tǒng)運(yùn)行期間(帶5極隔離器)，可以對一個(gè)電源轉(zhuǎn)換器進(jìn)行維護(hù)工作。
應(yīng)用程序功能塊
除了標(biāo)準(zhǔn)的軟件功能外，還可為應(yīng)用程序提供各種通用的功能塊。這些是經(jīng)過測試的應(yīng)用程序，如輸入/輸出擴(kuò)展，特定的監(jiān)控功能等。
電力系統(tǒng)穩(wěn)定器(PSS)
電力系統(tǒng)穩(wěn)定的目的。勵(lì)磁是利用勵(lì)磁阻尼負(fù)載振蕩來提高發(fā)電機(jī)和輸電系統(tǒng)整體的穩(wěn)定性。PSS通過影響電壓調(diào)節(jié)器的輸入來工作-對靜態(tài)勵(lì)磁系統(tǒng)非常有效，但對具有旋轉(zhuǎn)勵(lì)磁器的系統(tǒng)也有效。
ABB提供三種不同類型的電力系統(tǒng)穩(wěn)定器:
PSS符合lEEE
對于符合ieee -PSS2A標(biāo)準(zhǔn)的穩(wěn)定器，固定參數(shù)通過可調(diào)超前/滯后濾波器來實(shí)現(xiàn)阻尼。為了確定這些參數(shù)，ABB的計(jì)算軟件考慮了發(fā)電機(jī)和勵(lì)磁系統(tǒng)的數(shù)據(jù)，以及變壓器和網(wǎng)絡(luò)的電抗。
UNITROL 1005-0011
The UNITROL 5000 is designed as a modular “building-block system". More than 80 % of all systems can be made from type-tested system components.
This guarantees higher quality and makes shorter delivery times possible. The power section consists of one or more thyristor power converters, field breaker on the AC or DC side, the field flashing circuit and the solid state de-excitation system with Crowbar.
High availability due to the additional backup current regulator
To further increase the availability of the excitation system, in addition to the voltage regulator (AUTO) and the excitation current regulator (MAN), an independent current regulator (separate device with power supply, measurement and gate control circuits) can be used. Because of the follow-up control for all the inactive regulators, in the case of failure of the active regulator a smooth switch-over to a ready-to-operate regulator channel is guaranteed.
Less wiring thanks to the internal ARCnet® field bus
The exchange of data within the system, e.g. between the voltage regulator, power components and interface devices takes place via the serial ARCnet bus.
Additional interfaces or control panels can be located and operated up to a distance of several 1000 m via an optical link. Powerful and reliable power converters
Either compact power converters of the DCS 500 series or type UNL 13300 or Verithyr power converters are used for the UNITROL 5000. The type and the number of parallel power converters are based on the required field current, the ceiling voltage and the maximum dutycycle required by the customer.
The following options are available:
? Natural or forced cooling
? Redundant fans
? Possibility to do maintenance work on one power converter during the operation of the system (with 5-pole isolator).
Application function blocks
In addition to the standard softwarefunctions, further universally applicablefunction blocks of various kinds areavailable for the application program.These are tested application proceduressuch as input/output extensions, specificmonitoring functions, etc.
Power System Stabilizer (PSS)
The purpose of the power system stabi.lizer is to improve the stability of thegenerator and the transmission systemas a whole by using the excitation todamp load oscillations. The PSS operatesby influencing the input of the voltageregulator-extremely effective withstatic excitation systems, but also effectivefor systems with rotating exciter.
ABB offers three different types ofpower system stabilizer:
PSS in accordance with lEEE
For the stabilizer in accordance withIEEE -PSS2A, fixed parameters take careof optimum damping with adjustablelead/lag filters. To determine theseparameters ABB has calculation softwarethat takes account of the generator andexcitation system data, as well as thetransformer and network reactances.
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