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? 概述 SUMMARY
輸電及配電系統(tǒng)正常工作運(yùn)行在工頻信號(hào)下,然而隨著大量非線性負(fù)荷用電設(shè)備的增加,注入電網(wǎng)中的諧波也隨之增加,引起了電壓及電流的波形畸變。傳統(tǒng)的低壓無(wú)功補(bǔ)償裝置 TSC( 晶閘管投切電容器組 ) 實(shí)現(xiàn)電容器快速無(wú)觸點(diǎn)投切,但諧波的存在會(huì)使電容器與系統(tǒng)發(fā)生并聯(lián)諧振,使諧波電流放大導(dǎo)致電容器損壞或晶閘管燒損。而供電系統(tǒng)常用的方法是采用接觸器手動(dòng)投切電力濾波器來(lái)消除諧波,自動(dòng)化水平低,動(dòng)作慢,無(wú)法做到適時(shí)穩(wěn)定投切。低壓動(dòng)態(tài)無(wú)功補(bǔ)償濾波成套裝置 BSTSF( 用晶閘管投切濾波器 ) 實(shí)現(xiàn)了電壓、無(wú)功、諧波的綜合治理。
The normal operation of the transmission and distribution system is under the power frequency signal. However, with the increase of a large number of non-linear load electrical equipment, the harmonics injected into the power grid also increase, causing waveform distortion of voltage and current. The traditional low-voltage reactive power compensation device TSC (Thyristor Switching Capacitor Group) realizes fast contactless switching
of capacitors, but the presence of harmonics causes parallel resonance between capacitor and system, causing capacitor current to be damaged or thyristor burning. . The common method of the power supply system is to manually cut the power filter by the contactor to eliminate the harmonics, the automation level is extremely low, the motion is slow, and the timely and stable switching can not be achieved. The low-voltage dynamic reactive power compensation filter device BSTSF (using a thyristor switching filter) realizes comprehensive control of voltage, reactive power and harmonics.
? 主要特點(diǎn) MAIN FEATURES
?本低壓動(dòng)態(tài)無(wú)功補(bǔ)償濾波成套裝置兼有 TSC 和電力濾波器的雙重功能特點(diǎn),是一種精良、特別的晶閘管柔性投切技術(shù)。
?通過(guò)控制晶閘管實(shí)現(xiàn)各次濾波器組無(wú)觸點(diǎn)自動(dòng)投切,采用優(yōu)良的晶閘管柔性投切技術(shù) (FACTF) 和特別工藝設(shè)計(jì)的濾波器,避免了傳統(tǒng)接觸器投切及晶閘管過(guò)零投切時(shí)產(chǎn)生的涌流、暫態(tài)沖擊,無(wú)需放電即可再投。延長(zhǎng)了動(dòng)態(tài)補(bǔ)償系統(tǒng)的使用壽命。
?不僅可以自動(dòng)跟蹤系統(tǒng)無(wú)功負(fù)荷變化,進(jìn)行快速無(wú)功補(bǔ)償,還可以濾除電力系統(tǒng)中的諧波電流,保證用戶(hù)功率因數(shù)在規(guī)定的范圍內(nèi)。并且由于電容器與電抗器串聯(lián),避免了諧波的放大問(wèn)題。
?濾波器組由控制器控制投切,提高了濾波器組的快速響應(yīng)能力,可根據(jù)配電系統(tǒng)的負(fù)荷情況動(dòng)態(tài)頻繁的投切。動(dòng)態(tài)響應(yīng)時(shí)間不超過(guò) 20ms。
?功能強(qiáng)大、易于調(diào)試的液晶顯示控制器,可實(shí)時(shí)顯示系統(tǒng)電壓、功率因數(shù)、投入系統(tǒng)濾波器的組數(shù)、補(bǔ)償電流等數(shù)據(jù)??蓪?duì)功率因數(shù)、過(guò)壓值、失壓值、過(guò)流值、諧波畸變率值、投切延時(shí)等參數(shù)進(jìn)行編程。有過(guò)壓、過(guò)流、欠流、設(shè)備溫度 60℃等報(bào)警功能。
?根據(jù)三相平衡負(fù)荷和不對(duì)稱(chēng)負(fù)荷可實(shí)現(xiàn)三相或分相投切。
? This low-voltage dynamic reactive power compensation filter completes the dual functions of TSC and power filter. It is an advanced and unique thyristor flexible switching technology.
? Controlled thyristor realizes non-contact automatic switching of each filter group, adopts advanced thyristor flexible switching technology (FACTF) and special process design filter to avoid traditional contactor switching and thyristor zero-crossing switching The inrush current and transient impact can be re-injected without discharging. Extends the life of the dynamic compensation system.
? It can not only automatically track the system reactive load change, perform fast reactive power compensation, but also filter out the harmonic current in the power system to ensure that the user power factor is within the specified range. And because the capacitor is connected in series with the reactor, the amplification problem of the harmonics is avoided.
? The filter bank is controlled by the controller, which improves the fast response capability of the filter bank and can be dynamically and frequently switched according to the load of the power distribution system. The dynamic response time does not exceed 20ms.
? Powerful and easy to debug LCD display controller, which can display system voltage, power factor, number of sets of system filters, compensation current and other data in real time. Parameters such as power factor, overvoltage value, voltage loss value, overcurrent value, harmonic distortion rate value, and switching delay can be programmed. There are alarm functions such as overvoltage, overcurrent, undercurrent, and equipment temperature of 60℃ .
? Three-phase or split-phase switching can be realized according to three-phase balanced load and asymmetric load.
? 使用條件 CONDITIONS OF USE
?相對(duì)濕度 <85%
?大氣壓力 80 ~ 110kPa
?海拔高度≤ 2000m
?安裝場(chǎng)所應(yīng)無(wú)劇烈的機(jī)械震動(dòng)、無(wú)導(dǎo)電性或爆炸性塵埃、無(wú)強(qiáng)電場(chǎng)或強(qiáng)磁場(chǎng)、無(wú)損壞絕緣及服飾金屬的有害氣體及蒸汽。
?不受陽(yáng)光直接照射,無(wú)雨雪及嚴(yán)重霉菌侵襲;安裝傾斜度不大于 50°。
? Relative humidity <85%
? Atmospheric pressure 80 ~ 110kPa
? Altitude ≤ 2000m
? Installation site should be free of severe mechanical vibration, no conductive or explosive dust, no strong electric field or strong magnetic field, no damage to insulation and harmful gases and vapors of clothing metal.
? It is not exposed to direct sunlight, no rain or snow and severe mold attack; the installation inclination is not more than 50° .