CN205985759U - Novel electric owner of electric substation connect line knot to construct - Google Patents

Abstract

A new type of substation electrical main wiring structure, including a circuit breaker, an isolating switch and wires, wherein the four circuit breakers are connected in a circle through wires to form a quadrilateral, and the two sides of the circuit breaker are respectively provided with isolating switches for supplying For isolating the circuit breaker when overhauling it, a circuit is set on one of the diagonals of the quadrilateral, and a circuit breaker is connected in series, and isolating switches are also provided on both sides of the circuit breaker. The utility model has simple setting and convenient layout, and can establish a fast and stable wireless network connection between the wireless gateway and the controller. This system is especially suitable for 110kV substations, and is suitable for urban core areas with high distribution automation, high power supply reliability requirements, limited substation site area and important power supply value.

Description

A New Type of Substation Electrical Main Wiring Structure

technical field

The utility model relates to the technical field of power supply models of distribution networks, in particular to a novel electrical main wiring structure of a substation.

Background technique

The electrical main wiring of the substation is to meet the needs of the production, transmission and distribution of electric energy, and connect the primary equipment (generators, transformers, switching appliances, etc.) with the specified graphic symbols and text codes in a certain way and sequence The circuit diagram, which reflects the basic structure and function of the traction substation and distribution station (power station). In operation, it indicates the connection mode between the substation (power station) and the high-voltage power grid, the feeder and the operation mode of related primary equipment, which becomes the basis for dispatching control and actual operation of equipment. Its fundamental task is to provide electric energy to various users as economically and reliably as possible. The connection mode of the substation plays a decisive role in the safety, reliability, operation flexibility and economic rationality of the power supply.

The electrical main wiring of the substation shall meet the following requirements:

Safety: It includes equipment operation safety and personal safety. To meet this point, it is necessary to comply with national standards, strive for design specifications, and correctly select electrical equipment. The designed protection system should not only meet the normal operation monitoring function, but also meet the detection and protection function under fault conditions.

Reliability: The main wiring system should ensure the reliability of power supply to users, especially the power supply to important loads.

Flexibility: The main wiring system should be able to flexibly adapt to various working conditions, especially when some equipment is overhauled or the working conditions change, the operation mode of the switch can be reversed to achieve flexible scheduling and uninterrupted power supply to users. When expanding, it should be very convenient from the initial construction to the final wiring.

Economy: The main wiring system should also ensure the convenience of operation and meet the requirements of technical conditions, be economical and reasonable, minimize the occupied area, and save investment.

Utility model content

In order to solve the deficiencies of the existing technology, the utility model discloses a new type of electrical main wiring structure of a substation. This system is especially suitable for 110kV substations, and is suitable for substations with a high degree of distribution automation and high requirements for power supply reliability. The urban core area with limited site area and important power supply value.

In order to achieve the above object, the concrete scheme of the present utility model is as follows:

A new type of substation electrical main wiring structure, including a circuit breaker, an isolating switch and wires, wherein the four circuit breakers are connected in a circle through wires to form a quadrilateral, and the two sides of the circuit breaker are respectively provided with isolating switches for supplying For isolation when overhauling the circuit breaker, a circuit is provided on one of the diagonals of the quadrilateral, and a circuit breaker is connected in series, and isolating switches are also provided on both sides of the circuit breaker.

Two adjacent vertices of the quadrilateral respectively lead to a 110kV main wiring.

The beneficial effects of the utility model:

1. Adopting a quadrangular shape and introducing a diagonal wiring method greatly improves the reliability of power supply;

2. The ratio of the number of circuit breakers to the number of outgoing lines is 5:4, compared with the 3/2 wiring method, it saves the investment cost of circuit breakers and has better economy;

3. Compared with the 3/2 and 4/3 wiring methods, because it does not consider the structure of the two busbars, it saves the space occupied by the substation, and is especially suitable for a high degree of distribution automation and power supply reliability requirements Higher, limited substation site area, and urban core areas with important power supply value.

Description of drawings

Fig. 1 is a structural diagram of the utility model;

Among them, 1-circuit breaker, 2-isolating switch, 3-conductor.

detailed description:

Below in conjunction with accompanying drawing, the utility model is described in detail:

A new type of substation electrical main wiring structure, including a circuit breaker 1, an isolating switch 2 and a wire 3, wherein the four circuit breakers 1 are connected in a circle through the wire 3 to form a quadrilateral, and the two sides of the circuit breaker 1 are respectively An isolating switch 2 is provided for isolating the circuit breaker 1 during maintenance. A circuit is set on one of the diagonals of the quadrilateral, and a circuit breaker 1 is connected in series. The two sides of the circuit breaker 1 are also provided with isolating switches. 2.

Two adjacent vertices of the quadrilateral respectively lead to a 110kV main connection A, B.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (2)

1. a kind of new Main Electrical Connection in Transformer Substation structure, is characterized in that, including chopper, disconnecting switch and wire, wherein, Four described choppers are connected by wire annular and constitute a tetragon, and described chopper is respectively provided on two sides with disconnecting switch, It is used for isolation during maintenance chopper, wherein one diagonal of described tetragon arranges a loop, and concatenate one and break Road device, what chopper both sides were same is respectively equipped with disconnecting switch.

2. a kind of new Main Electrical Connection in Transformer Substation structure as claimed in claim 1, is characterized in that：The phase of described tetragon The main electrical scheme of a 110kV is drawn on adjacent two summits respectively.