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概述－－HVC 高压自动无功电压综合调节装置是一种根据电网及负荷状况分级自动调节电压，无功的装置。其特点是：调节系统由微机监测，智能判断，优化控制，便于联网；无功补偿系统为模块结构，分级任选，配置灵活。该成套装置推广应用后，对推进电力系统自动化，保证供电质量减少线路损耗，节约电能，提高输配电系统的输送容量，运行效率和经济效益发挥着重要作用。
工作原理：
HVC高压自动无功电压综合调节装置根据电网电压和功率因数的实际运行水平,自动投入最佳容量的电容器和调节有载调压变压器分接头,从而实现对系统电压和无功的综合调控,达到使系统电压合格率为 100%,功率因数大于 0.9的目的。控制器实现全自动化菜单式操作,具有良好的人机界面,并具有串行通讯接口,实现远端遥信,遥测,遥控。
技术特征:
*自动补偿负荷无功功率，提高负荷功率因数
*调节有载调压分接头，稳定负荷电压
*降低网损，高效节能
*抑制系统谐波
*减小无功电流，增加变压器带载容量
*自动投切与调节，无需人工干预
*控制器快速响应
*补偿器保护措施齐全，自动化程度高，能在外部故障或停电时
*自动退出，送电后自动恢复运行
主要功能:
*在高压侧对系统进行无功补偿
*综合调节功
*显示功能
*过电压，欠电压闭锁功能
*自动，手动操作功能
*统计与记录功能
*完善的保护功能
*参数与定制现场整定功能
*保证设备动作次数最少化
*通讯功能
技术参数:
* 系统标称电压 :6kv,10kv
* 装置最高工作电压 :7.2kv,12kv
* 额定频率 :50HZ
* 并联电容器模块推荐值 柜式 :150 300 600 900 1000kvar
* 并联电抗器模块 电抗率 :1%,4. 5-6%,13%
* 相数： 3
* 无功补偿模块内部结线方式 :Y
* 测量误差：电压≤ 0.2% 电流 ≤ 0.5% 功率因数≤ 2%
* 电压整定范围： 5%
* 功率因数 0.9 以上
结构特点:(本装置由测量系统，控制模块，电容器组及执行机构等单元组合而成，并具有如下特点)
* 积木式
* 模块系列化
* 主线路设置电容器专用母线接入方式
应用场合:
*用电企业6kv,10kv 配电装置无功功率补偿
*高压异步电机就地无功功率补偿
*居民小区电力负荷的动态无功功率补偿
*6kv,10kv 电网无功功率补偿
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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