What is the purpose of a substation when it comes to the knowledge of substations?

These most basic pairs tell you, if you are learning this major, you don't need to talk about the basics, such as in the substation, if you send electricity, there must still be someone with you to send electricity, if not, you have to report to the superior!! You won't, you have to watch it!! Hehe...

You may not be able to understand everything we say ... I don't know what kind of basic knowledge you're talking about ... The most important thing is to learn to read the electrical schematic!!

Substation, a place to change the voltage. In order to transmit the electric energy generated by the power plant to a distant place, the voltage must be raised and turned into high-voltage electricity, and the voltage must be reduced as needed near the user, and the work of raising and lowering the voltage depends on the substation. The main equipment of the substation is the switch and transformer.

According to the size of the scale, the small one is called a substation. The substation is larger than the substation. Substation generally refers to the voltage level.

step-down substations below 110kV; Substations include various voltage levels"Boost and buck"Transformer substation.

A substation is a power facility in the power system that transforms voltage, receives and distributes electric energy, controls the flow direction of electricity and adjusts voltage, and it connects the power grid of all levels of voltage through its transformer.

The substation is in a specific environment; It is the process of converting AC-DC-AC. Like submarine transmission cables as well as long-distance transmission. Some use the form of high-voltage direct current transmission and transformation. DC transmission overcomes the capacitive reactance of AC transmission.

Loss. It has an energy-saving effect.

The main equipment and connection methods of substations vary according to their functions.

Compose. 1.Transformer: It is the main equipment of the substation, which is divided into double-winding transformer, three-winding transformer and autotransformer.

That is, the high voltage and low voltage each phase share a component, and a head is drawn from the middle of the high-voltage winding as the outlet of the low-voltage winding. The voltage is directly proportional to the number of winding turns, and the current is inversely proportional to the number of winding turns.

2.Transformer: Voltage transformer.

The working principle of current transformers is similar to that of transformers, they turn the operating voltage and high current of high-voltage equipment and busbar, that is, the load or short-circuit current of equipment and bus into low voltage and small current of measuring instruments, relay protection and control equipment according to the prescribed proportion. Under the rated operating conditions, the secondary voltage of the voltage transformer is 100V, and the secondary current of the current transformer is 5A or 1A. The secondary windings of the current transformer are often connected to the load and are close to short circuits, please note:

It must never be allowed to open the circuit, otherwise the high voltage will endanger equipment and personal safety or cause the current transformer to burn out.

3.Switchgear: It includes circuit breakers, disconnectors.

Load switches, high-voltage fuses, etc., are devices that disconnect and close circuits. The circuit breaker is used to close and disconnect the circuit under the normal operation of the power system; In case of failure, the faulty equipment and line will be automatically disconnected under the control of the relay protection device, and there can also be automatic reclosing function. In China, air circuit breakers and sulfur hexafluoride circuit breakers are used more in substations above 220kV.

The main function of the substation is to convert our voltage into high and low voltage, because most of our electricity is high-voltage electricity when transporting, and the electricity used in our family belongs to low-voltage electricity, so it is necessary to reduce the voltage of high-voltage electricity through the substation, and then enter our home for use, and some substations are pressurized to facilitate long-distance transportation of electricity. A substation refers to a place in the power system that converts voltage and current, receives electric energy, and distributes electric energy. The electrical equipment in the substation is divided into primary equipment and secondary equipment.

1. Primary equipment. Primary equipment refers to equipment that directly produces, transmits, distributes and uses electric energy, mainly including transformers, high-voltage circuit breakers, disconnectors, busbars, lightning arresters, capacitors, reactors, etc. 2. Secondary equipment.

The secondary equipment of the substation refers to the equipment that measures, monitors, controls and protects the operating conditions of the primary equipment and system, which mainly consists of the relay protection device, automatic device, measurement and control device, metering device, automation system and DC equipment that provides power supply for the secondary equipment. Requirements for the layout of substations: 1. The attached 10 kV substation on the ground floor of the building does not need to be sub-roomed, and the transformer and high and low voltage switchgear can be arranged on the same floor and in the same room, and only need to maintain a specific spacing, and the 35 kV independent substation with a proprietary building should be arranged in layered sub-rooms according to the function.

2. The indoor layout of the substation should be compact and reasonable, which is convenient for the operation, maintenance, test and inspection of the operating personnel, and the installation position of the switch cabinet should meet the minimum channel width requirements, and due consideration should be given to the development and expansion requirements. Inspection of substation: The inspection of the substation is to observe whether the appearance of the equipment is abnormal through regular inspections, such as whether the color changes, whether there are debris, whether the meter hand indication is normal, whether the sound of the equipment is normal, whether there is abnormal smell, whether the temperature of the equipment that is allowed to be touched is normal, and the change of the operating parameters of the electrical equipment in operation is measured to determine whether the operation status of the equipment is normal.

According to your description, a substation is a place in the power system that transforms voltage and current, receives and distributes electrical energy. The substation inside the power plant is a step-up substation, which is used to boost the electrical energy from the generator and feed it into the high-voltage grid.

We hope you find ours helpful.

What is the role of the substation is to step down or boost the voltage of electricity, and we need to realize the transmission and utilization of electricity.

The operation mode of the substation is based on different main wiring types.

A small substation has only one or two incoming lines (one working, one standby) and one transformer, and there is no way to operate.

Generally, there will be more than two incoming lines, two main transformers, and a single bus segmentation. The operation mode is divided into: single bus contact, two main transformers, one working and one standby or two parallel operation. It is also possible to run two main transformers in sections with each belt.

Large hub substations will have more than one voltage level of incoming lines, as well as contact lines. There are multiple main transformers, and the bus generally adopts a single bus segment with bypass or a double bus with bypass. There are many ways to operate this substation:

For example, a bypass switch replaces an incoming switch. The bypass switch replaces the outgoing switch.

The working bus is out of service and the bypass bus is running. Double-busbar contact. Single bus operation.

Wait a minute. In short, only under the premise that the wiring mode of the substation is determined, can various operation modes be considered, and the best operation mode and operation mode under various special circumstances can be determined.