Power Distribution Cabinet AC And Configuration

Whether the diesel generator set emits direct current or alternating current is related to the configured generator. If an alternator is configured, alternating current is generated, and if a DC generator is configured, direct current is generated.

Modern diesel generator sets, including small diesel generator sets for household backup, are generally equipped with three-phase AC brushless synchronous generators. So it emits alternating current. Generally 220V, 380V AC. However, when the rotor of the machine does not reach the rated speed, the voltage and frequency of the machine will be lower.

In order to overcome the impact of high temperature weather on substation equipment, remove obstacles to power grid operation in time, and ensure the safe operation of power grids in high temperature seasons. Based on the actual situation, the power bureaus have launched the comprehensive investigation phase of preventing high temperature during this year's "peak summer". Each enterprise also monitors the operation of their own generator sets at any time!

The operation and maintenance work area of the bureau, based on the actual situation, planned ahead of time, prevented it in advance, and formulated a special work plan to prevent high temperature during the "peak summer". Adhering to the guiding ideology of "safety first, prevention first", to prevent the complete shutdown of substations caused by factors such as high temperature and heavy load, and to prevent equipment damage accidents such as transformers, GIS transformers and other main equipment due to lightning strikes, overheating, overload, etc. As the key point, according to the principle of combining investigation and treatment, we will carry out high temperature prevention work in a planned, focused and targeted manner.

It is reported that in accordance with the deployment requirements of the special work plan for preventing high temperature during the “peak season”, the stations (institutions) in the work area of the bureau have begun to monitor the load conditions of the main transformers, lines, busbars, and transformer secondary circuits used in the jurisdiction, and oil-filled and inflatable equipment. Oil and gas pressure, main transformer temperature rise and cooling system operation status, transformer operation status, and temperature measurement of important secondary circuits to conduct a comprehensive inspection to find out the bottom line, record high-load circuits, equipment with high node temperature, and defective equipment, and Make a good record and be aware of it, so as to carry out targeted analysis and maintenance and prevention work in combination with weak links.

The special work requirements for the prevention of high temperature in the "peak summer" period require that the comprehensive investigation phase of the "peak summer" prevention of high temperature in the substation operation and maintenance area should be fully completed before June 27, and the key tracking phase will continue until September 30. day. At the same time, each station (station) should combine: heavy load lines, transformers, secondary AC and DC circuits; temperature rise of main transformers, operating conditions of cooling systems; temperature measurement of contacts, oil and gas installations Pressure and sealing conditions; changes in ambient temperature; special operation methods, elimination of equipment defects; important municipal power protection tasks, etc., to narrow the scope of work, and organize special inspections and inspections with focus, rhythm, and pertinence to eliminate high temperature weather. The equipment is abnormal, and the operation safety is guaranteed.