新快3与老快3区别:低壓無功補償裝置 SVC

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老快3下载安装 www.sthfyl.com.cn 產品簡介
Brief introduction to the products

SVC型低壓無功自動補償裝置主要用于戶外電力變壓器低壓側的無功功率補償。由電容器、濾波電抗器、接觸器、復合開關、熔斷器、功率因數自動控制器、主開關、通風系統及柜體組成。它對提高系統電壓水平、降低線路損耗、改善系統功率因數、提高電力變壓器的利用率、增強系統電壓穩定性起著十分重要的作用。具有響應及時迅速、運行無功耗、并有效地抑制合閘涌流,提高了無功補償裝置的運行安全性能。本裝置還具有過壓、欠壓、過流、短路、缺相等?;すδ?,并可顯示三相電壓、電流、有功功率、無功功率、功率因數、控制參數等。廣泛適用于住宅小區、工礦、企業、醫療、科研、油煤田、石化及其它公用設施,特別是電焊機、點焊機、吊車等大功率且啟動頻繁的工業設備。

The SVC Low-Voltage Reactive Power Automatic Compensation Device is mainly used for the reactive power compensation at the low-voltage side of the outdoor power transformer and is composed of condenser, filter reactor, contactor, compound switch, fuse, power factor automatic controller, main switch, ventilation system and cabinet. It plays an important part in increasing the voltage level of the system, reducing the loss of the lines, improving the power factor of the system, increasing the utilization ratio of the power transformer and strengthening the stability of the system voltage. It is characterized by its rapid and timely response, operation free from power consumption and suppressing the switch closing surging current to improve the operation safety of the reactive power compensation device. The device features also the protection function of the overvoltage, undervoltage, overcurrent, short circuit and  phase default and can display three phase voltage, current, active power, reactive power, power factor and control parameters. It is widely used in residential quarters, industrial and mining enterprises, hospitals, scientific research, coal and oil fields, petrochemical and other public facilities, especially electric welding, spot welding, cranes and other high power frequently starting industrial equipment.

產品引用標準
Standards for Product

IEC-493-1          《低壓成套開關設備和控制設備》,

GB7251             《低壓成套開關設備》,

GB/T15576          《低壓無功功率靜態補償裝置總技術條件》


IEC-493-1  “Low Voltage Switchgear Assembly and Control Equipment”,

GB7251  “Low Voltage Switchgear Assembly”,

GB/T15576  “General Technical Conditions of Low Voltage Reactive Power Static Compensation Device”.


結構特點及功能
Structural Characteristics and Functions

補償精度高 

補償后的系統功率因數優于0.98~0.99(或設計值); 

響應速度快 

對于50Hz電網,系統響應時間不超過4 ms,完成一次投切過程不超過20ms,投切頻率隨用戶用電負荷的變化而實現動態補償(可達50次/秒)。 

投切無“污染” 

可控硅組采用進口可控硅芯片,投切過程采用零電位技術。電容投切實現過零檢測,零電壓投、零電壓切,投切過程中無浪涌電流,無電壓沖擊,不產生高次諧波,工作安全可靠,使用壽命長,保證系統安全供電。 

三相不對稱補償功能 

用戶用電負荷不平衡時,根據每相實際需要而定量投入,達到最佳補償效果。 

濾波回路 

RC吸收回路濾除高次諧波,實現無投切振蕩,無補償呆區。 

控制器全自動檢測、運行 

控制器具有檢測自動跟蹤、過電壓封鎖、缺相?;?、欠壓?;ぜ笆涑齠碩搪返認唄飯收媳;すδ?,當系統電壓過高或過低時,控制器器自動退出運行??刂破魑薰收顯誦惺奔洳壞陀?2年。 

數據通訊 

具有RS232/RS485物理通訊接口,通訊方式可采用現場采集(點對點)或遠程采(網 絡)。 

溫控?;?nbsp;

當裝置溫度超過40℃時,散熱裝置自動啟動,實行強制通風。


High Precision Compensation

The system power factor after compensation shall be better than 0.98 ~ 0.99 (or the designing value)

Rapid Response

For 50Hz power grid, the system response time is less than 4 ms.  The process of completing a switching is not more than 20 ms.  The switching frequency shall realize dynamic compensation according to the load variation of the users (up to 50 times/sec).

Switching Free from “Pollution”

The SCR group adopts imported chips. The process of switching adopts the zero potential technology. The capacitor switching realizes zero-crossing detection, zero voltage switching. During the switching, there are no surge current, no voltage shocks, no high-order harmonics. It is reliable in operation and has long service life. The safe power supply of the system can be guaranteed.

Asymmetric Three-Phase Compensation

In case of the imbalance of the electrical load, the user can input quantitatively to achieve the best compensation effect.

Filter Circuit

The RC absorption circuit filters the high-order harmonics to realize switching free from oscillation and compensation dead zones.

Controller Automatic Detection and Operation

The controller has the functions of detection, auto-tracking, overvoltage blocking, default phase protection, under voltage protection and short circuit fault protection etc. When the system voltage is too high or too low, the controller can stop operation automatically. The trouble free operation time shall be not less than 12 years.

Data Communication

It has RS232/RS485 physical communication interface. The means of communication can adopt on the spot data collection  (point to point) or the remote data collection (network).

Temperature Control Protection

When the device temperature exceeds 40 ℃, the cooling device starts automatically to realize mandatory ventilation.