CN205304059U - Compact substation - Google Patents

Abstract

The utility model relates to a substation technology field, in particular to compact substation. This compact substation, including hyperbaric chamber, low -pressure chamber and transformer room, its characterized in that: still include the terminal control room, the hyperbaric chamber divide into high tension switchgear and high -pressure inlet wire cabinet, the low -pressure chamber divide into low pressure master switch cabinet, low pressure feeder cabinet and compensation cabinet, installs the compensator in the compensation cabinet, the terminal control indoor location has the comprehensive guarantor's device of computer, strapping table, high pressure to have the voltage regulation control apparatus and the data transmission unit of carrying, hyperbaric chamber, low -pressure chamber and terminal control room set up in the box, and the transformer room is located the box outside, the utility model discloses simple structure maintains, increases the feeder convenience, conveniently realizes intelligent management, and phase sequence adjustment of the subtracting work flow reduces the headspace, reduces area, can realize the remote control of an electrical equipment distant place, remote signalling, telemetering measurement, satisfies the user and counts performance requirements such as the collection of a tree name distant place, detection, control to the electric wire netting.

Description

A compact substation

technical field

The invention relates to the technical field of substations, in particular to a compact substation.

Background technique

The current box-type substation (referred to as box-type substation) is a compact substation that combines high-voltage switchgear distribution transformers, low-voltage switchgear, electric energy metering equipment and reactive power compensation devices in one or several boxes according to a certain wiring scheme. Type complete power distribution device. It is suitable for use in three-phase AC systems as a circuit and for distributing electrical energy.

The European-style box-type transformer is to install the transformer and ordinary high-voltage and low-voltage electrical equipment in the same metal casing box. The temperature in the transformer room is very high, which causes difficulty in heat dissipation, affects the capacity utilization rate, and affects the internal performance of the transformer, reducing the service life; On the one hand, the European-style box-type substation has a larger volume, which increases the occupied area and increases the investment cost. In the current compact American-style substation, because the high-voltage load switch is immersed in oil, the oil is easily carbonized and decomposed by the arc during operation, and harmful gases such as acetylene are produced. The harmful gas dissolved in the transformer oil when the high-voltage load switch is in the same tank as the transformer degrades the performance of the transformer. When the high-voltage load switch and the transformer are separated into boxes, the harmful gas generated affects the performance of the switch; the high-voltage load switch cannot be seen in the oil tank Obvious disconnection point, inconvenient maintenance, unable to realize intelligent control; backup fuse is placed in the oil tank, inconvenient maintenance; compact American-style substation has a compact structure and small space, making the feeder difficult; box-type substations are exposed to direct sunlight for a long time Under high temperature conditions, high temperature affects the heat dissipation of molded case circuit breakers, compensation systems, and terminal control systems, making protection systems and signal transmission units prone to damage and abnormal operation, causing systemic failures in substations, reducing the life of transformers, and destroying transformers in severe cases; The phase sequence arrangement of the transformer low-voltage outgoing line is inconsistent with the busbar standard of the low-voltage cabinet, which makes the working procedure complicated when the low-voltage cabinet is connected to the transformer; the size of the reserved space increases, and the manufacturing shell increases; resulting in an increase in material costs.

Contents of the invention

In order to make up for the defects of the prior art, the present invention provides a compact substation mainly used in 6-35kV class, which satisfies the stability of the power grid, saves space, is convenient for maintenance, and has stable electrical performance.

The present invention is achieved through the following technical solutions:

A compact substation, including a high-voltage room, a low-voltage room and a transformer room, characterized in that it also includes a terminal control room, the high-voltage room is divided into a high-voltage switch cabinet and a high-voltage incoming line cabinet, and the high-voltage switch cabinet and high-voltage incoming line A metering and information collection unit is installed in the cabinet. The low-voltage room is divided into a low-voltage main switch cabinet, a low-voltage feeder cabinet and a compensation cabinet. Both the low-voltage main switch cabinet and the low-voltage feeder cabinet are equipped with plastic case circuit breakers. A compensator is installed, and a microcomputer comprehensive protection device, a meter, a high-voltage on-load voltage regulation control device and a data transmission unit are installed in the terminal control room. The high-voltage room, low-voltage room and terminal control room are arranged in the box body, and the transformer room It is located outside the box body. There is a transformer body and a temperature control sensor in the transformer room. A radiator is arranged behind the transformer room. A protective net is installed around the oil tank and the radiator of the transformer body. A fan is installed on the protective net. The high-voltage There are high-voltage outgoing lines connected between the transformer room and the low-voltage room; low-voltage outgoing lines are connected between the low-voltage room and the transformer room. The phase sequence of the low-voltage outgoing lines of the transformer is consistent with the phase sequence of the low-voltage main connection cabinet. Connect with the wiring terminal of the main control switch in the low-voltage main connection cabinet.

A high-voltage load switch is installed in the high-voltage switch cabinet for easy maintenance, and the high-voltage load switch is a common type.

A lightning arrester is also installed in the high voltage switch cabinet.

The metering and information collection unit includes current transformers, voltage transformers, and charged display sensors, which can realize remote control, remote signaling, and telemetry of electrical equipment, and remote adjustment to meet user performance requirements for remote collection, detection, and control of power grid data.

The plastic case circuit breaker can also be a vertically arranged bar switch, which meets special requirements for power consumption, can be connected with international power consumption, and can greatly reduce space.

The low-voltage main switch cabinet, the low-voltage feeder cabinet and the compensation cabinet are all equipped with signal acquisition and transmission equipment. The signal acquisition and transmission equipment has the functions of measurement, protection, compensation, and signal acquisition, and can realize remote control, remote signaling, and telemetry of electrical equipment. , remote adjustment and other requirements to meet the user's performance requirements for remote collection, detection, and control of power grid data.

The low-voltage chamber, high-voltage chamber, and terminal control chamber are all equipped with anti-condensation controllers, and cabinet-type cooling elements are installed on the outer walls to stabilize the temperature inside the cabinet and improve the stability of electrical performance.

An on-load voltage regulating switch is installed above the oil tank of the transformer body to meet the requirements of the special power consumption environment and ensure stable power consumption.

The beneficial effects of the present invention are: the present invention has simple structure, convenient maintenance and addition of feeders, and convenient realization of intelligent management. Install the cabinet air conditioner and condensation control system to ensure constant indoor temperature and humidity, significantly prolong the service life of electrical accessories, improve the accuracy of electrical equipment protection parameters and prolong the life of transformers; adjust the phase sequence to simplify the work process and reduce the reserved space , reduce the floor area, can realize remote control, remote signaling, and remote measurement of electrical equipment, and meet the performance requirements of users for remote collection, detection, and control of power grid data. The invention is mainly used in 6-35kV American-style substations.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings.

Accompanying drawing 1 is the top view structure schematic diagram of a kind of compact substation of the present invention;

Accompanying drawing 2 is the left view structure diagram of accompanying drawing 1;

Accompanying drawing 3 is a schematic diagram of the primary system of a compact substation of the present invention;

Accompanying drawing 4 is the primary system schematic diagram of traditional substation;

In the figure, 1 transformer body, 2 high-voltage switch cabinet, 3 high-voltage incoming line cabinet, 4 low-voltage main switch cabinet, 5 low-voltage feeder cabinet, 6 radiator, 7 pressure release valve, 8 on-load tap changer, 9 temperature control sensor seat , 10 Terminal Control Room, 11 Cabinet Cooling Element, 12 Fan, 13 Cooling Hole, 14 Manhole, 15 Compensation Cabinet, 16 Protective Net, 17 High Voltage Room, 18 Low Voltage Room, 19 Transformer Room, 20 Measurement and Information Collection Unit, 21 Plastic case circuit breaker, 22 Compensator, 23 Microcomputer comprehensive protection device, 24 Meter, 25 High voltage on-load voltage regulation control device, 26 Data transmission unit, 27 High voltage load switch, 28 Signal acquisition and transmission equipment, 29 Lightning arrester, 30 Low voltage universal disconnect switch.

detailed description

Accompanying drawing is a kind of specific embodiment of the present invention. As shown in accompanying drawings 1-4, the compact substation includes a high-voltage room 17, a low-voltage room 18 and a transformer room 19, and is characterized in that it also includes a terminal control room 10, and the high-voltage room 17 is divided into a high-voltage switchgear 2 and a The high-voltage incoming line cabinet 3, the high-voltage switchgear 2 and the high-voltage incoming line cabinet 3 are equipped with a metering and information collection unit 20. The metering and information collection unit 20 includes a current transformer, a voltage transformer and a charged display sensor, which can realize electrical Remote control, remote signaling, remote measurement, and remote adjustment of the equipment meet the performance requirements of the user for remote collection, detection, and control of grid data. A high-voltage load switch 27 is installed in the high-voltage switchgear 2 for easy maintenance. The high-voltage load switch 27 is an ordinary type, canceling the backup fuse and inserting the fuse at the same time, simplifying the work process, reducing the heating point, and the lightning arrester 29 is also installed in the high-voltage switchgear 2; the low-voltage room 18 is divided into a low-voltage main switchgear 4 and two low-voltage feeder cabinets 5 and the compensation cabinet 15, a low-voltage universal circuit breaker 30 is installed in the low-voltage main switch cabinet 4, and a plastic case circuit breaker 21 is installed in the low-voltage main switch cabinet 4 and the low-voltage feeder cabinet 5, and the plastic case circuit breaker 21 can also be a vertically arranged bar switch to meet special requirements for electricity consumption, and can be in line with international electricity consumption, and can greatly reduce space; a compensator 22 is installed in the compensation cabinet 15, and the low-voltage main switch cabinet 4, low-voltage Both the feeder cabinet 5 and the compensation cabinet 15 are equipped with signal acquisition and transmission equipment 28. The signal acquisition and transmission equipment 28 has the functions of measurement, protection, compensation, and signal acquisition, and can realize remote control, remote signaling, telemetry, and remote adjustment of electrical equipment, etc. It is required to meet the user's performance requirements for remote collection, detection, and control of grid data. The terminal control room 10 is equipped with a microcomputer comprehensive protection device 23, a meter 24, a high-voltage on-load voltage regulation control device 25 and a data transmission unit 26. In the body, the transformer chamber 19 is located outside the box body. There is a transformer body 1 and a temperature control sensor in the transformer chamber 19. A radiator 6 is arranged at the rear of the transformer chamber 19. The oil tank of the transformer body 1 and the periphery of the radiator 6 are equipped with Protective net 16, fan 12 is installed on the protective net 16, high-voltage outgoing line is connected between described high-voltage chamber 17 and transformer chamber 19; The phase sequence of the low-voltage main connection cabinet is consistent, and the connection terminals of the low-voltage outgoing line are connected to the connection terminals of the main control switch in the low-voltage main connection cabinet through copper bars and soft connections. The low-voltage chamber 18, high-voltage chamber 17, and terminal control chamber 10 are all equipped with anti-condensation controllers, and cabinet-type cooling elements 11 are installed on the outer walls to stabilize the temperature in the box and improve the stability of electrical performance. An on-load voltage regulating switch 8 is installed above the oil tank of the transformer body 1 to meet the requirements of the special power consumption environment and ensure stable power consumption.

The invention has the advantages of simple structure, convenient maintenance and addition of feeders, and convenient realization of intelligent management. Install the cabinet air conditioner and condensation control system to ensure constant indoor temperature and humidity, significantly prolong the service life of electrical accessories, improve the accuracy of electrical equipment protection parameters and prolong the life of transformers; adjust the phase sequence to simplify the work process and reduce the reserved space , reduce the floor space, can realize remote control, remote signaling, and remote measurement of electrical equipment, and meet the performance requirements of users for remote collection, detection, and control of power grid data. The invention is mainly used in 6-35kV American-style substations.

Claims (8)

1. A compact substation, including a high-voltage room (17), a low-voltage room (18) and a transformer room (19), characterized in that: it also includes a terminal control room (10), and the high-voltage room (17) is divided into high-voltage Switchgear (2) and high-voltage incoming line cabinet (3), the high-voltage switchgear (2) and high-voltage incoming line cabinet (3) are equipped with metering (current transformer, voltage transformer, live display sensor) and information collection unit (20), the low-voltage room (18) is divided into a low-voltage main switch cabinet (4), two low-voltage feeder cabinets (5) and a compensation cabinet (15), the low-voltage main switch cabinet (4) and the low-voltage feeder cabinet (5) Plastic case circuit breakers (21) are installed, a compensator (22) is installed in the compensation cabinet (15), and a microcomputer comprehensive protection device (23) and a meter are installed in the terminal control room (10) (24), high-voltage on-load voltage regulation control device (25) and data transmission unit (26), the high-voltage chamber (17), low-voltage chamber (18) and terminal control room (10) are arranged in the box body, and the transformer room ( 19) Located outside the box, the transformer chamber (19) has a transformer body (1) and a temperature control sensor, and a radiator (6) is provided behind the transformer chamber (19). The oil tank and radiator of the transformer body 1 (6) A protective net (16) is installed on the periphery, and a fan (12) is installed on the protective net 16. A high-voltage outlet is connected between the high-voltage chamber (17) and the transformer chamber (19); the low-voltage chamber (18) and There are low-voltage outgoing lines connected between the transformer rooms (19). The phase sequence of the low-voltage outgoing lines of the transformer is consistent with the phase sequence of the low-voltage main connection cabinet. The terminals of the low-voltage outgoing lines are connected to the main control switch in the low-voltage main connection cabinet through copper bars and soft connections terminal connection. 2. The compact substation according to claim 1, characterized in that: a high-voltage load switch (27) is installed in the high-voltage switch cabinet (2). 3. The compact substation according to claim 1, characterized in that: a lightning arrester (29) is also installed in the high-voltage switchgear (2). 4. The compact substation according to claim 1, characterized in that: the metering and information collection unit (20) includes a current transformer, a voltage transformer and a charged display sensor. 5. The compact substation according to claim 2, characterized in that: the plastic case circuit breaker (21) can also be a vertically arranged bar switch. 6. The compact substation according to claim 1, characterized in that: the low-voltage main switch cabinet (4), the low-voltage feeder cabinet (5) and the compensation cabinet (15) are all equipped with signal acquisition and transmission equipment (28) . 7. The compact substation according to claim 1, characterized in that: the low-voltage room (18), the high-voltage room (17), and the terminal control room (10) are equipped with anti-condensation controllers, and the outer walls are equipped with anti-condensation controllers. Add cabinet type cooling element (11). 8. The compact substation according to claim 1, characterized in that: an on-load tap changer (8) is installed above the oil tank of the transformer body (1).