Effectively do a good job in safety production, energy saving, consumption reduction, reliable power supply, and high-quality services, and make preparations for the "peak summer".

Every summer is the peak of electricity consumption of the power system for generation, supply and consumption. Due to the high temperature and increased electricity load, electrical contacts (connectors) overheating failures and accidents are not uncommon. Safety production during this period is very severe.

For decades, due to historical reasons, people have always thought that there are many electrical contacts in the system, and overheating accidents are inevitable, natural and appropriate. Some unreasonable and unqualified electrical contacts are also mentioned in the national standard (GBJ149-90, page 45). The operating unit reported that overheating has occurred, and page 32 of the guide book 11-055 transformer maintenance book also said that the bus connector (electrical The contact resistance of the contact) is generally not greater than 20% of the resistance value of the bus bar of the same length, and the aluminum bus bar connection can not be pressed too tightly, what is the use of aluminum alloy, copper bolts to connect electrical contacts, copper and aluminum transition, etc. There is no way to meet the actual conditions of the scene. It is these that are not the responsibility of the following units or maintenance workers to cause the overheating of the electrical contacts to become a historical problem.

In addition to the lack of ideological understanding, theoretical errors, technically solving the problem of overheating of electrical contacts is to use "Yaoshun" to control water, eliminate level prevention, infrared temperature measurement, and "95598" accident repairs. Overheated head repairs and emergency repairs are constantly repeating past mistakes. Therefore, it is not surprising that today's habitual errors are formed.

In the nearly 40 years of substation maintenance, I have taken the detours of habitual mistakes for many years. It was only after hitting the south wall that I slowly found a new road (2002.8, Phase IV, Phase 111, Chengdu) This new method is introduced in the electrical technology information). It also takes the basic definition of overheating electrical contacts as the starting point, takes the "four basic principles" as the theoretical basis for solving electrical contact overheating, and uses the six requirements for overheating electrical contacts as a means of patented technology; to solve the problem of overheating The new road in two different roads is the direction to promote this technology (see Chinese website: China Renyi Electric, English: www.renyidq.cn SMS platform: but hot electrical contacts), please refer to the homepage of the website "Resolve electrical contacts thoroughly There are two, three, four, and five items in the article "The only way to overheating". The purpose is to promote new technologies in the power system as soon as possible and eliminate the old problem of overheating of electrical contacts as soon as possible.

From years of practice to theory, and then to practice to test whether the theory is correct. Especially under the affirmation of the State Grid Corporation of China, the Organizing Committee of the 5th and 6th Meeting of the China Electricity Council, and the experts, with the strong support of the provincial company, the Chengdu Electric Power Bureau, and the Qingbaijiang Power Supply Bureau, the In the “online” application in Beijing, Tianjin, Henan, Hebei, Shanxi, Chongqing and other places outside the province, the new technology of thermal electrical contacts (fasteners) has exerted its original safety benefits and economic Benefits and social benefits (this is the outlook of the fifth session and thanks to the sixth session, see website). From this point of view, however, the theory of thermal electrical contacts makes sense in all types of power systems, under all conditions, and the technology adopts "improved" methods, which are very convenient to promote and use, and are "one-time-for-all". Yes, the cost is more expensive than the accident, it is simply "a huge profit"!

After the provincial company President Zhu gave instructions on this technology, the Sichuan Electric Power Testing and Research Institute conducted a high current temperature rise test on the electrical contacts connected with the patented technology and patented products. Its electrical contact (joint) temperature is lower than 20% or more than the busbar (this is the opposite of the traditional faulty electrical contact overheating, the laboratory director said this is revolutionary) Can you say that this technology is theoretically and in the direction The roads and concepts are all historical, traditional, and habitual. They are completely different. It is not too much to call it a revolution. In principle, it is necessary to make sense under what circumstances (not as inconsistent as in the guide book), and must withstand the test of practice. In the end, I think it should be proved by history. Only through these three stages (processes). The truth is proven to be correct, and the axiom is recognized as correct. In terms of science and technology, we must seek truth from facts. Regardless of black cats and white cats, as long as they can catch mice, they are good cats. No matter adults or old people, they can solve old problems.

It makes sense in theory, and is technically convenient and feasible. With the strong support of leaders and functional departments at all levels, under the banner of the electrical contact revolution carried by the leaders and deputy leaders of this technical unit. There will be more and more people who can't take the shortcut of hot electrical contacts. Comprehensively promote this new technology. Stop taking the old path of repeating past mistakes. Take precautions and make preparations early to catch the peak and pass the summer. It is entirely possible that electrical contact overheating accidents do not occur or rarely occur during safe production. This is the need of the current situation and the responsibility given to us by history.

As a senior technician for substation maintenance, I will not deduct my money because I have retired, and the system will have a safety incident, nor will it be for safety production. If the benefits are good, I will not be given bonuses, and I will not want to work safety. Doing it well is the leadership’s political performance. My responsibility is to warn my colleagues on the habitual and wrong path I have traveled for many years, so that others will stop following this wrong path. The experience is passed on to everyone without reservation.

Midsummer is approaching, let us prepare early to further improve safety production, economic operation, energy saving and consumption reduction. (It is not the so-called energy-saving concept of turning the air conditioner to 26°C and turning off the lights early at night. This refers to the overheating of electrical contacts." Line loss" and direct loss from failure or accident). High-quality service (not to go to the scene to solve the failure or accident as soon as possible, but to solve the problem fundamentally from the beginning of the installation, and to prevent the failure, proactive service) to make your unit's safe production really take a higher level, Let us work together to thoroughly solve the "beneficial work" of the overheating of electrical contacts!

I don't know if it is, please criticize and correct

Senior Technician of Transformer Overhaul Ren Yi

February 17, 2009