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Anhui Shengli Precision Manufacturing Science &Technology Co., Ltd.

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Anhui Shengli Precision Manufacturing Science & Technology Co., Ltd. being a subsidiary of Suzhou Shengli Precision Manufacturing Science &Technology Co., Ltd., is a domestic professional provider of precision structural module manufacturing and service. The main products of the company include the large size touch screen, the precision metal structure, the precision plastic structure, Base, precision mold and so on. Anhui Shengli Precision Manufacturing Science & Technology Co., Ltd. is a supplier for many manufacturers of TV sets and computers of famous brands in the world, among them are Lenovo, Philips, Sharp, Sony, Samsung and other well-known brands both at home and abroad.
 
Anhui Shengli
 
The production equipment of the company mainly includes the machine tools for production, the machining center, the cranes, the punching machines, the industrial elevators and the like. The construction of Phase I power distribution project of the company adopts the dynamic reactive power capacitor compensation scheme, which has the characteristics of being able to adapt to quick changes in load as well as a quick response speed.
 
Due to the high cost of the dynamic reactive power compensation capacitor cabinet in the early stage, the cost budget has been given due considerations.  In the construction of later stage, the company was looking for a reactive power compensation capacitor cabinet manufacturer which would provide the equipment with better compensation effect as well as a lower cost.
 
In response to the compensation requirements of Anhui Shengli Precision Manufacturing Science & Technology Co., Ltd., the  professional technical research and development team of Anhui DELITER Electric Power Science & Technology Co., Ltd went to the production lines and took measurements of the changes in load many times. They collected load current, current, voltage harmonics and other power parameters at a repeated basis and carried out continuous field investigation. A comprehensive consideration was given to the electrical equipment on the site. Through acquisition and analysis the data, it showed that the changes in load were quick, the reactive power compensation response time was between 20ms and 100ms, and most of the loads contained more than 5 harmonics. According to the load feedback in the operation on the site, taking into consideration of the cost control requirements of Anhui Shengli Precision Manufacturing Science & Technology Co., Ltd., the technical team of Anhui DELITER Electric Power Science & Technology Co., Ltd put forward an reactive power compensation scheme which was exclusive for the customer:
 
In this scheme,compared with the traditional reactive power capacitor compensation cabinet, the intelligent reactive power capacitor compensation cabinet module was used to replacea convention cabinet which was in the form of components.The 
scheme has the advantages such as the reactive power compensation precision is high, installation of the combined module panels is easy, connections of the wire harness in the cabinet are simple, the compensation response is quick. This scheme is completely suitable to the changes in the load operation on the site, the cost is low and so on. Since the company has gained approval from Anhui Shengli Precision Manufacturing Science & Technology Co., Ltd.to a great extent, it has become the sole strategic supplier of the later. The company have accomplished the design, production, assembly and debugging of the low voltage reactive power compensation capacitor cabinets in the Phase II, Phase III and Phase IV.
 

Load analysis

Machine tools, machining center, cranes, punching machine and load electricity consuming equipment which has quick changes in start up, stable operation and a large content of harmonics

Compensation capacity

800 Kvar (The main and auxiliary cabinets: Main cabinet: 400 Kvar+   Auxiliary cabinet: 400 Kvar)

Compensation speed

Changes in the load are within 20ms and 100ms

Reactance rate

7%, considering the larger content of 5 order harmonics in the system

 
A comparison between a traditional reactive power compensation capacitor cabinet and the new type reactive power compensation capacitor cabinet
 
 Manufacturing
 
The low voltage reactive power compensation capacitor cabinet, designed by Anhui DELITER Electric Power Science & Technology Co., Ltd the adopts the modular combined panel installation, which has solved the difficult problem in  winding the wire harnesses inside the cabinet. The installation, assembling, debugging and the acceptance were carried out successfully at one time. This has won the warm welcome and favor of the customer. The equipment has been put into operation for several years, the operation conditions have always been normal and there have not been any failures which have occurred. The compensation power factor of the equipment is as high as 0.96, as shown in the figure:
 
Manufacturing
 
In addition to accomplishing the reactive power compensation for the production equipment in the company, the reactive power has been transmitted to the power grid many times. Praises have been received from the power supply unit with respect to the reactive power. According to the load operation on the site, the low voltage reactive power compensation capacitor cabinet designed and developed by our company can fully respond to the changes in the actual load current, there is not any overcompensated or undercompensation which has occurred in the compensation process.
 
In the equipment, an anti-harmonic reactive power compensation module is provided, forming a low resistance path in the system, which can effectively suppresses the high order harmonics and the inrush current, effectively absorb and release the harmonics, and protect the compensation circuit and the electrical equipment. The reactive power response to the changes in the reactive power caused by the load, with a high  compensation accuracy as well as a quick response speed, which is in line with the design standards. The reactive power compensation effect is accurate and quick. With its R & D design advantages for safety and reliability as well as its rich  experiences in production, the company has been recognized by all of the top 100 customers!
 
As to the low voltage reactive power compensation capacitor cabinet, please choose the product of Anhui DELITER Electric Power Science & Technology Co., Ltd. The company will provide you with exclusive customization scheme, which may not the best one, but must be on which is suitable for your low voltage reactive power compensation capacitor cabinet!
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