Transformer energy-saving operation and capacity-increasing technology through the national network identification and put into use

According to reports from "State Grid News" and "People's Daily Online Henan Channel", the research results of transformer energy-saving operation and capacity increase technology completed by our company in cooperation with Henan Zhengzhou Power Supply Company have passed the appraisal of State Grid Corporation.
Transformer energy-saving operation and capacity-increasing technology has the effect of improving transformer operating capacity, realizing transformer energy-saving, and ensuring the refinement and intelligence of transformer operating load management. Relevant technical researchers said that the use of this technology can accurately and real-time monitor the load status of transformers during operation, and timely adjust the load distribution of each substation in the region, so as to ensure the reliability of power supply and the safety of power grid equipment.
With the rapid growth of power demand, the load pressure of the power grid is increasing, and now the general transformer load operation and management mode is gradually not conducive to the safe and stable operation of the equipment and the improvement of the load regulation and control capacity of the regional power grid. For this reason, Zhengzhou Power Supply Company has applied transformer energy-saving operation and capacity expansion technology to 5 220 kV and 110 kV transformers in Zhengzhou 220 kV Bridge Substation and Zhengzhou 110 kV Baimiao Substation since October 2011.
Three 220 kV 180 MW capacity transformers: the annual load peak period is 4 months. When the capacity increase operation is not carried out, the normal operation load is 60% of the rated load calculation. After the capacity increase system is adopted, the average normal operation load is increased to 85% of the rated load on average. The multi-transmission capacity is 180 MW * 24*25%* 120=129800 MW per hour, and the extra power transmission is about 0.13 billion degrees. Usually three transformers are operated in parallel, which can deliver 0.39 billion degrees of more power. Two 110 kV 50 MW capacity transformers: the annual load peak period is 4 months. When the capacity increase operation is not carried out, the normal operation load is 60% of the rated load calculation. After the capacity increase system is adopted, the average normal operation load is increased to 85% of the rated load on average, and the multi-transmission capacity is: 50 MW * 24*25%* 120=36000 MW per hour, with an extra power transmission of about 0.035 billion degrees. Usually two transformers are operated in parallel, which can transmit 0.07 billion degrees of electricity more. The total amount of power delivered by 5 transformers is 0.46 billion degrees.
At present, the technology works well in the practical application of Zhengzhou power grid, and the monitoring data is accurate and reliable, which provides a large number of reference data for relevant departments. At the same time, during the peak period of power consumption, the technology reasonably improves the operation load of the transformer, minimizes the operation power consumption of the transformer, greatly improves the operation efficiency of the transformer, realizes the safe, environmental protection and economic operation of the transformer, and meets the demand for production and living electricity. It has great social and safety benefits.
At the appraisal meeting, relevant experts suggested that the technology should be promoted as soon as possible. Our company is cooperating with Zhengzhou power supply company to study the comprehensive promotion and application scheme.
Citation: National Grid Newshttp://www.sgcc.com.cn/ztzl/newzndw/sdsf/05/271940.shtml
People's Network Henan Channelhttp://henan.people.com.cn/news/2012/04/28/613436.html