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概述－－HVC 高壓自動(dòng)無功電壓綜合調(diào)節(jié)裝置是一種根據(jù)電網(wǎng)及負(fù)荷狀況分級(jí)自動(dòng)調(diào)節(jié)電壓，無功的裝置。其特點(diǎn)是：調(diào)節(jié)系統(tǒng)由微機(jī)監(jiān)測，智能判斷，優(yōu)化控制，便于聯(lián)網(wǎng)；無功補(bǔ)償系統(tǒng)為模塊結(jié)構(gòu)，分級(jí)任選，配置靈活。該成套裝置推廣應(yīng)用后，對(duì)推進(jìn)電力系統(tǒng)自動(dòng)化，保證供電質(zhì)量減少線路損耗，節(jié)約電能，提高輸配電系統(tǒng)的輸送容量，運(yùn)行效率和經(jīng)濟(jì)效益發(fā)揮著重要作用。
工作原理：
HVC高壓自動(dòng)無功電壓綜合調(diào)節(jié)裝置根據(jù)電網(wǎng)電壓和功率因數(shù)的實(shí)際運(yùn)行水平,自動(dòng)投入最佳容量的電容器和調(diào)節(jié)有載調(diào)壓變壓器分接頭,從而實(shí)現(xiàn)對(duì)系統(tǒng)電壓和無功的綜合調(diào)控,達(dá)到使系統(tǒng)電壓合格率為 100%,功率因數(shù)大于 0.9的目的。控制器實(shí)現(xiàn)全自動(dòng)化菜單式操作,具有良好的人機(jī)界面,并具有串行通訊接口,實(shí)現(xiàn)遠(yuǎn)端遙信,遙測,遙控。
技術(shù)特征:
*自動(dòng)補(bǔ)償負(fù)荷無功功率，提高負(fù)荷功率因數(shù)
*調(diào)節(jié)有載調(diào)壓分接頭，穩(wěn)定負(fù)荷電壓
*降低網(wǎng)損，高效節(jié)能
*抑制系統(tǒng)諧波
*減小無功電流，增加變壓器帶載容量
*自動(dòng)投切與調(diào)節(jié)，無需人工干預(yù)
*控制器快速響應(yīng)
*補(bǔ)償器保護(hù)措施齊全，自動(dòng)化程度高，能在外部故障或停電時(shí)
*自動(dòng)退出，送電后自動(dòng)恢復(fù)運(yùn)行
主要功能:
*在高壓側(cè)對(duì)系統(tǒng)進(jìn)行無功補(bǔ)償
*綜合調(diào)節(jié)功
*顯示功能
*過電壓，欠電壓閉鎖功能
*自動(dòng)，手動(dòng)操作功能
*統(tǒng)計(jì)與記錄功能
*完善的保護(hù)功能
*參數(shù)與定制現(xiàn)場整定功能
*保證設(shè)備動(dòng)作次數(shù)最少化
*通訊功能
技術(shù)參數(shù):
* 系統(tǒng)標(biāo)稱電壓 :6kv,10kv
* 裝置最高工作電壓 :7.2kv,12kv
* 額定頻率 :50HZ
* 并聯(lián)電容器模塊推薦值 柜式 :150 300 600 900 1000kvar
* 并聯(lián)電抗器模塊 電抗率 :1%,4. 5-6%,13%
* 相數(shù)： 3
* 無功補(bǔ)償模塊內(nèi)部結(jié)線方式 :Y
* 測量誤差：電壓≤ 0.2% 電流 ≤ 0.5% 功率因數(shù)≤ 2%
* 電壓整定范圍： 5%
* 功率因數(shù) 0.9 以上
結(jié)構(gòu)特點(diǎn):(本裝置由測量系統(tǒng)，控制模塊，電容器組及執(zhí)行機(jī)構(gòu)等單元組合而成，并具有如下特點(diǎn))
* 積木式
* 模塊系列化
* 主線路設(shè)置電容器專用母線接入方式
應(yīng)用場合:
*用電企業(yè)6kv,10kv 配電裝置無功功率補(bǔ)償
*高壓異步電機(jī)就地?zé)o功功率補(bǔ)償
*居民小區(qū)電力負(fù)荷的動(dòng)態(tài)無功功率補(bǔ)償
*6kv,10kv 電網(wǎng)無功功率補(bǔ)償
HVC High Voltage Automatic Reactive Power Compensator Synthetic Adjusting Equipment
INTRODUCTION:
HVC-High Voltage automatic reactive power compensator synthetic adjusting equipment is an automatic facility which can adjust voltage and reactive power by different levels according to the power network and load condition. Its characteristic: adjusting by computers、intelligent determining、optimum controlling and convenience connecting. Reactive power compensating system is a model structure, chosen by different levels and distributes freely. the equipment which had been put into the market has well benefit in promoting power system automatically, ensuring the quality of the power supply, reducing the power line loss and saving the energy；It also can promote transmitting capacity、efficiency and economy.
WORKING PRINCIPLE:
According to the power netting and power factors' practical working level, especially to automatic controlling the optimum capacity and adjusting the transformers' joints, HVC-High Voltage automatic reactive power compensator synthetic adjusting equipment put synthetic controlling the system voltage and reactive power into reality, reaching the certification ration of 100%, and the power factor is over 0.9. The controller can present the Chinese menu with well connection to the people. It also provides the parallel communication interface in realizing communication, measurement and controlling in long distance.
TECHNIQUE CHARACTERS:
** Auto-compensate load reactive power, increase load power factor
** Adjust loading voltage joints， stable the load voltage
** Reduce the grid loss, save energy effectively
** Control systematic harmonic
** Reduce reactive currents, increase converter's capacity with loads
** Auto input/output and adjust, need inartificial disturb
** Controller respond simultaneously
** Various protecting measure ways by compensator, high level automation, auto-recovering after breakdown
** Auto-quiting, auto-resume running after electricity transmiting
MAIN FUNCTION:
* System reactive power compensating from the high voltage side
* Synthetic adjusting
* Display
* Over voltage、short voltage close
* Automatic and manual operating
* Statistics and record
* Perfect protection
* Parameters and stable parameters changing at the scene
* Ensure the acting minimum of the equipment
* Communication
TECHNIQUE PARAMETERS:
* System standard voltage: 6kv,10kv
* Load highest working voltage: 7.2kv,12kv
* Rated frequency: 50HZ
* Recommend value of parallel capacitor model (cupboard): 150 300 600 900 1000kvar
* Reactance rating of the parallel capacitor model: 1%,4. 5-6%,13%
* Phase number:3
* Internal connecting way of reactive power model: Y
* Measuring error: voltage ≤ + 0.2%, current≤+ 0.5%, power factor≤+ 2%
* The voltage rectified range: + 5%
* Powe r factor: above 0.9
STRUCTURE CHARACTERS:
The facility consists of measure system, controlling model, capacitor banks, and operating units etc. and the characters are as follows:
* Building block-like
* Modelling series
* The special bus bar connection to the main circuit capacitor
APPLIED OCCASION:
* Reactive power factor compensating to the power arranging devices 6kv, 10kv in the power consuming enterprise
* Reactive power factor compensating for the high-voltage asynchronizing motor on the spot
* Dynamic reactive power factor compensating for the denizen district power load
* Reactive power factor compensting for the power grids 6kv,10kv
ORDERING NOTICE:
* Controlling method: TWK or TDK
* Determine the connecting method of the primary side
* The regulating range of voltage and reactive power
* Information about converter's switch with load
* Reactive power controlling scheme
* Reactance rating of the series reactor
* Fixing occasions, location reserved, space and size
* The size and color of cupboard
* Other specific demands
SUPPORTING TECHNIQUE:
With the rapid development and wide application of technology in power and electricity, the variety, quality and proportion of non-linear load's type are increasing rapidly, which cause the waveform distortion in the power system, harmonic current has serious effect on power devices, power users and communicating circuits. Harmonic currents can cause overmuch current and resonance amplification, keep the devices from running safely. It commonly occurs the devices damaged. Harmonic source is becoming a problem at the edge of enterprises and unable to be resolved.
In order to keep the compensating cupboard operate normally, the customers have to give a clear indication of not only the product's type chosen, yet the content and related data about the load's harmonic currents. Our company posses test device of the power grids harmonic waveform. Experts can be sent to the spot to measure and analysis through software to simulate and compute. In recent years, the experienced experts have provided various design schemes according to actual circumstances, accurate data analysis, optimum resolving schemes and strong productivity. The high-tech products of Weihan are the optimum choices to various enterprise orders in compensating cupboards field.
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