Distribution transformer integration control system

Abstract

The invention discloses a distribution transformer integration control system. A high-voltage electric control switch and a high voltage fuse are successively arranged from a high voltage transmission line to a high voltage input terminal of a distribution transformer. An output terminal of the distribution transformer is provided with a low-voltage electric control switch. The low-voltage electric control switch uses a combination configuration form of a low-voltage permanent-magnet automatic knife switch and a low-voltage fuse or uses a permanent-magnet low-voltage air switch. The system comprises an electronic controller. The electronic controller controls a control part of the high-voltage electric control switch and the control part of the low-voltage electric control switch. In the system, an independent noncontact pressure regulating apparatus is configured for the distribution transformer. In the system, a high voltage electron PT is used to provide a power supply for a control and protection circuit. By using the system of the invention, a voltage quality can be guaranteed; transformer efficiency can be improved; an electric energy can be saved; manpower can be saved and the system is suitable for a high voltage power transformer station.

Description

Technical field [0001] The present invention relates to automatic control equipment in a power distribution network, and in particular to an integrated control system for distribution transformers. Background technique [0002] Distribution transformers are the key equipment for voltage conversion, power transmission and direct distribution to users in the distribution system. Various types of distribution transformers of different capacities and sizes are based on the characteristics of different users. At present, the control and management of distribution transformers are basically ancient In the high-voltage side, most of them are manually operated drop fuses or power distribution isolation switches with insulating rods. Only a few important users with large capacity use expensive vacuum switches, sulfur hexafluoride switches or oil switches, etc. Equipment, and most of these switches are operated manually, which is cumbersome, takes a long time for power outage, and is not v...

AI Technical Summary

Problems solved by technology

In order to make the supply voltage more stable, the transformer is equipped with a transformer voltage regulating switch. The distribution transformer voltage regulating switch is divided into a non-excitation voltage regulating switch and a load voltage regulating switch. The load voltage regulating switch is currently a mechanical switch. , many mechanical failures, long operating time, large volume, and expensive, so most distribution transformers adopt the off-excitation voltage regulation method. This off-excitation voltage regulation is to adjust the voltage without electrification, and the voltage regulation requires the transformer to be powered off. , the power outage procedure is complicated, and sometimes the transformer is burned if the adjustment is not good. After manual adjustment, it is necessary to test the contact condition of the voltage regulating switch. This method of voltage regulation takes a long time. Therefore, this kind of manual voltage regulation cannot keep up with the change of system voltage. For various reasons, people rarely adjust the non-excitation voltage regulation switch. Many users do not even know that there is a voltage regulation switch on the distribution transformer until the transformer is used. Even if it is bad, the tap changer has not been adjusted, so this kind of non-excitation voltage regulating switch is basically like a fake

Secondly, the economic operation of distribution transformers is also in a superficial state, and it is impossible to realize the refined operation management of the station area

Images