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 TianEnLu (China) Enterprise Group

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Power Quality Optimization and Safety Guarantee Project of Zhonghai Asphalt Co., Ltd.

Catalytic refining equipment and motor load equipment in various petrochemical industries.

 

 Major Energy Consumption Equipment  

 

  Diagnostic content   

◆ Measurement of Operating Parameters of Low Pressure Partial Supply Branch in Zhonghai Asphalt Co., Ltd.

◆ Primary Power System Drawings for Electric Power Systems

◆ The waveform distortion is small and the capacity is large.

◆ Partial drawings of low-voltage power supply and distribution systems

Our company engineers use FLUKE435II power quality analyzer to conduct a detailed investigation on the power supply system of the factory of Zhonghai Asphalt Co., Ltd. The specific data are shown in the following figure:

CNOOC Asphalt Co., Ltd. is a wholly-owned subsidiary of CNOOC Oil and Gas Development and Utilization Company, which is subordinate to the Refining and Sales Department of CNOOC. The company's crude oil design and processing capacity is 1 million tons per year, with an annual output of about 500,000 tons of asphalt, 12,000 tons of naphtha, 230,000 tons of low-sulfur environmentally friendly fuel oil and more than 240,000 tons of wax oil.

 

In March 2016, our company made a comprehensive line survey of the company's power system, monitored the actual operating parameters, and based on the actual field measurement data, carried out data analysis, found the problems of its power equipment.

 

  Analysis of diagnostic results   

 
 
 

Transformer Outgoing Voltage and Current Diagram

Harmonic Diagram of Transformer Outgoing Line

Your company belongs to petrochemical enterprises, and the particularity of the petrochemical industry requires high power quality of the power grid. Some large fluctuations in the power grid will seriously affect the normal production safety of enterprises.

 

Zhonghai Asphalt Liability Co., Ltd. is mainly equipped with inductive loads such as fans and pumps, and equipped with frequency converters for control. At the same time, the output voltage of transformer secondary side low voltage is monitored. It is found that the actual working voltage of the enterprise is 400 V, which is higher than the rated voltage of 380 V. Frequency converter is used to control motor equipment. Harmonic pollution is relatively large, which interferes with the normal operation of other precision instruments and instruments. In the petrochemical industry, all kinds of precision instruments and instruments play a vital role in the safe production of enterprises. If the actual voltage is higher than the rated voltage, the equipment will deviate from the normal working point, the working current will be higher, all kinds of losses will rise in a straight line, and the service life will be greatly reduced.

 

  According to the analysis of the results, we know that   

Power Quality Optimization and Safety Guarantee Project of Zhonghai Asphalt Co., Ltd.

 
 

In the implementation of this project, our company has installed TEL-JL100 intelligent voltage stabilization and power saving equipment for Zhonghai Asphalt Liability Co., Ltd.

  Power saving devices   

  Benefit Analysis of Power Saving   

Through on-site detailed testing, objectively detailed electricity consumption data of your company are obtained. On this basis, with our company's professional power-saving prediction software, the following power-saving benefit analysis is obtained.​

Through on-site detailed testing, objectively detailed electricity consumption data of your company are obtained. On this basis, with our company's professional power-saving prediction software, the following power-saving benefit analysis is obtained.​

 

  Direct Economic Benefit   

 
 
 

Harmonic Diagram of Transformer Outgoing Line

Transformer Outgoing Voltage and Current Diagram

 
 

The service life of the equipment is 15 years, and the annual electricity cost is about 1.2 million yuan per transformer. The electricity saving rate of the renovation part is (8 +2)%, calculated by 8%. The payback period of investment is 1.9 years.

 

After deducting the cost recovery period of equipment investment for 1.9 years and the benefit benefit period for equipment for 13.1 years, the direct economic benefit of electricity saving will be about 1.25 million yuan.

 

  Indirect Economic Benefit   

Enterprises carry out power-saving transformation, while achieving direct power-saving benefits, it can also improve the quality of power supply, reduce the loss of power supply lines, stabilize product quality, effectively prolong the life of equipment and prolong the maintenance cycle of equipment.

 

According to the actual working conditions of Zhonghai Asphalt Co., Ltd., the protective effect of equipment is equivalent to the power saving effect, and the indirect benefit can reach 30%. The power saving protection system will produce great economic and social benefits.