Reasons for high low voltage line loss of the hott

Reasons for high line loss of rural low voltage after rural power transformation, the quality of rural power lines has been strictly controlled for aluminum level, electrolyte level and molecular ratio, which has significantly improved, and the reliability of power supply and voltage quality have been basically guaranteed. However, the loss of rural power lines has not been reduced to the corresponding specified range, especially the wiring loss below 0.4kV is difficult to control, and if it is slightly relaxed, the line loss will rise sharply, greatly exceeding the specified standard of 12%, Enterprise benefits will be affected. The reasons are as follows:

(1) the phenomenon of stealing electricity is prominent. The improvement of line quality provides technical guarantee for reducing line loss, but human factors appear. Before the agricultural reform, rural residents' users all implemented the multi household joint meter system. The joint meter is the electricity bill settlement table, and there is a sub meter from the joint meter to the user. Under normal circumstances, the sum of the sub meter index should be equal to the joint meter index. If the sum of the sub meter is less than the joint meter index, it indicates that there is electricity theft, and users naturally supervise each other to prevent the occurrence of electricity theft. After the agricultural transformation, the system of one meter per household is implemented, and the household meter is the electricity bill settlement table. Users face the power supply station directly, and mutual supervision between users is no longer available. On the contrary, mutual supervision between users has changed from mutual supervision during the joint meter system to mutual teaching of electricity theft secrets and skills after meter reading to the home. Some users even work together to take turns on duty to counter reconnaissance and monitor electricians to check electricity, It is found that electricians check the mutual ventilation report and then use zero adjustment installation to display the experimental force as zero signal, which greatly increases the difficulty of investigation, especially in busy farming or drought resistant seasons

(2) the phenomenon of black households still exists. After implementing the management of one meter per household and meter reading to each household, the workload of agricultural electricians has doubled compared with the previous years, and the management difficulty has greatly increased. A few nail households, difficult households and influential households have lost their previous privilege of using electricity, and their psychology is unbalanced. They deliberately find problems for agricultural electricians, do not cooperate in their work, and set up work barriers to achieve the purpose of using electricity without paying money. Some agricultural electricians have insufficient work experience, and have to be aggrieved and perfected in the face of such phenomena, Do not copy his meter with auxiliary shallow scribed lines for sample positioning at the same time. There are also a few agricultural electricians with low quality who artificially leave messages for acquaintances. There are 221 households with electricity in a village in our city. In 2000, there were only about 180 households with meter reading rate accounting for only 81.5%, and the low-voltage line loss rate was as high as 30%. After investigation, it was found that in addition to some users' families who went out to work and suspended the use of electricity, black households accounted for a considerable proportion. Black households are generally large consumers of electricity, which has a great impact on line loss

(· introduction to the recycling process and current situation of carbon fiber composites 3) the agricultural transformation is not complete, and the user's electricity meter is inaccurate. During the agricultural transformation, due to the lack of funds for agricultural transformation, they were unable to bear the cost of replacing new meters, and the users were not willing to replace meters due to insufficient understanding of replacing new meters. Before 2000, most of the electricity meters used by residents in our city were dd14, dd17 and dd28 meters that were officially eliminated by the state in 1988. Dd282 meters were less than 5%. These meters were all overdue, and some of them had a service life of 30 years. After calibration and inspection, more than 30% of the meters had negative error values ranging from 15% to 30%, which seriously affected the accuracy of the settlement table and caused the increase of line loss

according to the above analysis of the reasons for the high line loss rate, our bureau has taken the following measures:

(1) strengthen publicity, strive for the support and cooperation of the public security department, and severely crack down on electricity theft. Make use of various publicity media to vigorously publicize that electricity is a commodity and stealing electricity is a criminal act of stealing state property. Clarify the wrong understanding of a very few people that stealing electricity is not stealing. At the same time, take the initiative to contact the public security organs to win their support for power enterprises, jointly investigate and deal with the theft of electricity, and severely crack down on the identified theft of electricity. Never be soft hearted and severely crack down on the arrogance of the theft of electricity

(2) increase the investment in modern management equipment and implement computerized management. Computerized management is an effective means of current power consumption management. A microcomputer file should be established for users. The actual number of power users in each station area and relevant data must be accurately stored in the microcomputer. The microcomputer should uniformly issue the electricity bill, assess and copy the example on a monthly basis. For users who work in other places all year round and temporarily do not use electricity, their accounts should be cancelled from the microcomputer in time. When using electricity, they should receive fire and send electricity at any time. At the same time, three publicity should be achieved to increase the transparency of electricity payment, Make every user under the supervision of the masses

(3) strengthen the education of agricultural electricians and continuously improve the quality of workers. Strengthen the professional ethics education of employees, so that each employee can develop a positive, solid and realistic work style, stop unhealthy tendencies and establish a healthy atmosphere. At the same time, take the management measures of separating copying, checking and receiving, or set up a full-time inspection team in the power supply station. After the pipeline electrician reads the meter, the inspection team checks the number of users and the meter index one by one, and seriously deal with the problems found, plug the artificial loopholes, and put an end to the human electricity and power black households

(4) strengthen line loss assessment. Formulate practical assessment methods for line loss management and strictly implement them. The level of line loss in each station area managed by electricians is directly linked to wages and bonuses, and rewards and punishments are paid in a timely manner on a monthly basis

(5) accelerate the replacement of old meters to ensure the accuracy of meters. The power supply bureau can appropriately allocate some funds to help users replace and eliminate old meters, speed up the replacement of old meters, and ensure that the accuracy of users' meters is within the standard range

with the joint efforts of all employees of our bureau, through the adoption of the above measures, the line loss rate has decreased year by year. As of 2001, the overall 10kv High-voltage and low-voltage line losses below 0.4kV were lower than the specified standards of 5% and 12% respectively, and the enterprise benefits have increased significantly