顶部菜单
全站搜索
自定内容

Tel: 86057761720369 
Mobile: 15868721000  
Fax: 86057761736962 
Sales:86057762717369 
Address: Yueqing City, Zhejiang
Province, China Huang seven town
Yueqing City Industrial Zone A  
Post Code: 325604  
Q Q: 35977770  
Website: www.rm-sh.com

自定内容
文章正文
On the traditional three compensation control cabinet program
Time:2017-07-20 09:52:29    Page view (551)
Conventional Traditional Compensation Application (CJ19 Switching Capacitive Contactor)
Conventional switching method is known as the "static" compensation method, and most of the switch factory currently used in the investment program, the purpose of delay switching is to make the capacitor has enough discharge time to prevent too frequent Of the action on the capacitor and contactor damage, when the controller detects the need for compensation, the controller is delayed for some time (cast delay time can be set), put a group of capacitors, and continue to detect compensation, such as still need Compensation, the controller is delayed for some time, and then put a group of capacitors, until all the investment so far. As the capacitor needs to discharge, can be put into operation again, so the delay time by the capacitor discharge limit can not be set too short, the market generally only use the cycle switch program. Delay switching method is generally based on the number of switching path number of about 60 seconds to 300 seconds to the reactive power can be enough, it is suitable for load changes in the occasion of a smooth compensation, if the control system selected nine related products, You can achieve unequal capacitance switching program, the compensation accuracy and switching time will be greatly improved.
 
Conventional compensation scheme
Description:
1, conventional compensation programs such as the use of JKW5C or JKL5B controller can achieve the traditional cycle of switching, but also to achieve step (not wait) switching, both automatically find the size of the capacitor to match the size of the switch.
2, conventional compensation programs such as the use of nine or nine electric compensation controller can achieve the traditional cycle of switching, but also to achieve coding switching program, a harmonic source of the premises selected VPFC series of controllers.
3, the use of VSK coding (step switching differential capacitance switching) compensation program is the traditional way to upgrade the switching products, compared to the following advantages:
A) the use of cash step cut program that is to achieve a one-time quick complement function.
B) switching sampling has a power factor to reactive power or reactive power compensation.
C) use a differential compensation, step ratio can be set.
D) the first step can be arranged smaller capacitance value to improve the compensation accuracy.
E) The capacitor is re-energized for the discharge delay and the response delay values are set separately.
Electromechanical integration switch switch compensation device is the basic working principle is to connect the thyristor and magnetic relay in parallel, in the moment of investment in the thyristor bear zero cross-cut, SCR time is very short (do not produce Heat), and then converted to magnetic holding relay running. Therefore, this kind of switching method has both the advantages of thyristor zero-crossing switching without current, there is the advantage of running the AC contactor without power consumption, and it avoids the operation of the thyristor and the contactor Is one of the most desirable compensation schemes that is particularly suitable for use in compensation systems caused by urban and rural power grids.
Fast switching method that people familiar with the "dynamic" compensation method, due to the use of SCR as a switch on the capacitor switching, SCR with zero voltage input, the advantages of current zero-cut, so no capacitor discharge time Of the delay, and has a very short response time, the controller can in the shortest possible time, through the minimum capacitance step to achieve the target COSφ value. This way is the mechanical action of the contactor class can not be achieved, million times to achieve the target COSφ value of the input and removal process, typically in 1-2 seconds or so, the maximum 2-5 seconds time for the load duty cycle changes faster Equipment such as welding machines, presses, oil fields and ports, as well as harmonic filter compensation.
 
Today's energy-saving environmental protection has been implemented in each field, the power system is also the case, in the power system is the use of reactive power compensation to reduce power consumption, commonly used in several ways is to use reactive power compensation Control cabinet to achieve energy-saving effect, the fact is the case, according to different venues and the use of the environment, have reached the desired purpose, now we talk about the compensation cabinet commonly used in the three sets of programs, is currently the most used program. The following information is for reference only, because we are professional production of compensation components manufacturers, there may be some deficiencies in the compensation system, hope to come to the advice.
Copyright(C)2016-2020 Shanghai People Electric Appliance Co.,