CN105591296A - Modularization area power transformation integration distribution box - Google Patents

Abstract

This application relates to a modular power transformation comprehensive distribution box, including a metering unit room, a main incoming line unit room, a bus bar insulation unit room, an outgoing line drawer unit room, and a reactive power compensation drawer unit room. The main incoming line knife melting switch is installed in the line unit room, and the main busbar of the main incoming line knife melting switch is connected to the outgoing line drawer unit room and the primary static contact terminal on the incoming line side of the reactive power compensation drawer unit room, relying on the busbar The busbar clamps are fixed and insulated and sealed with the bus bar insulation unit chamber sealing plate, so that the entire system circuit is connected as a whole. Due to the implementation of the above technical solution, the configuration scheme of this application is flexible. This distribution box has three basic functions of metering negative control, power distribution circuit and reactive power compensation, and can be flexibly configured according to needs. The structural design of the device and the layout of electrical appliances and circuits are economical and reasonable, easy to maintain, easy to operate, safe and reliable, practical and beautiful, and have good ventilation and heat dissipation functions.

Description

Modular substation comprehensive distribution box

technical field

The application belongs to a modular substation comprehensive distribution box.

Background technique

At present, all the components in the comprehensive distribution box device of substation area in operation are fixedly installed, and each unit compartment is not separated independently. In actual operation, if the fault circuit cannot be quickly disconnected during power outage maintenance, and there is no visible fracture, it will affect other power circuits; if a fault occurs and the load increases and the circuit breaker needs to be replaced, it cannot be quickly operated; such as a distribution box A failure in one of them will affect the normal use of other functional compartments. The existing substation comprehensive distribution box has a simple structure and a single function, so it cannot better meet the reliability of power supply.

Contents of the invention

The purpose of this application is to propose a distribution transformer grounding resistance reducing device that can be cyclically added to the soil around the transformer grounding electrode to effectively reduce the grounding resistance of the transformer.

The purpose of this application is achieved in this way: the integrated power distribution box of the modular station area substation includes a metering unit room, a total incoming line unit room, a bus bar insulation unit room, an outlet drawer unit room, and a reactive power compensation drawer unit room. The main incoming line unit is equipped with a main incoming line knife fuse switch, and the main busbar of the main incoming line knife fuse switch is connected to the primary static contact terminal on the incoming line side of the outgoing line drawer unit room and the reactive power compensation drawer unit room, Rely on the bus bar clamp to fix and use the bus bar insulation unit room sealing plate to insulate and seal, so that the entire system circuit is connected as a whole.

Due to the implementation of the above technical solution, the configuration scheme of this application is flexible. This distribution box has three basic functions of metering negative control, power distribution circuit and reactive power compensation, and can be flexibly configured according to needs. The structural design of the device and the layout of electrical appliances and circuits are economical and reasonable, easy to maintain, easy to operate, safe and reliable, practical and beautiful, and have good ventilation and heat dissipation functions.

The reactive power compensation module device responds quickly, the compensation effect is good, and the work is reliable. An intelligent exhaust cooling device is installed in the compensation module to improve the compensation effect and reduce the failure rate. It has manual and automatic switching operation modes. Complete protection functions: overvoltage, overload, undervoltage, undercurrent, short circuit, phase loss, zero sequence overrun and other functions.

The feeder circuit adopts a modular design, and the unit drawer is installed in the distribution box by referring to the GCS cabinet form, which effectively improves the safety, reliability and interchangeability of the outlet circuit maintenance, and greatly shortens the power outage time. The drawers of the same functional unit have good interchangeability, and can be pushed in/out without the main power supply (and adjacent units) being powered off, which facilitates power-off maintenance. On the one hand, it improves the safety of personnel and the reliability of equipment, and on the other hand, it makes the operation on the job site simple, fast and reliable.

Description of drawings: the specific structure of the application is provided by the following drawings and examples:

Figure 1 is a schematic diagram of the front structure of the application;

Figure 2 is a schematic diagram of the internal structure of the front of the application;

Figure 3 is a schematic diagram of the back structure of the application;

Figure 4 is a schematic diagram of the internal structure of the back of the application;

Fig. 5 is A-A sectional view of Fig. 1;

Figure 6 Top view of reactive power compensation unit.

Legend: 1. Top cover, 2. Metering unit room, 3. Inlet cable elbow, 4. Door lock, 5. Measurement observation window, 6. Hinge, 7. Grounding piece, 8. Outlet and compensation room, 9. Outlet cable elbow, 10. Incoming side busbar, 11. Post insulator, 12. Meter, 13. Negative control device, 14. Junction box, 15. Outlet drawer unit room, 16. Circuit breaker operating handle, 17 . Drawer position status observation window, 18. Drawer remote entry mechanism interlocking plate, 19. Outlet unit instrument, 20. Drawer handle, 21. Reactive power compensation drawer unit room, 22. Compensation branch circuit circuit breaker, 23. Compensation switching instruction Lights, 24. Reactive power compensation unit main opening and closing button, 25. Reactive power compensation controller, 26. Cable and confluence busbar room, 27. Main incoming line unit room, 28. Secondary pin, 29 Primary static Contact, 30, bus bar clamp, 31, bus bar, 32, bus bar insulation unit room, 33, zero row, 34, main incoming line knife fuse switch, 35, 4-level micro-break for lightning protection module, 36, Intelligent temperature and humidity controller, 37. Reactive power compensation sampling transformer, 38. Lightning protection module, 39. Main busbar, 40. Cable clamp, 41. Outgoing circuit monitoring and protection transformer, 42. Outgoing circuit breaker, 43. Main switch of reactive power compensation unit, 44, exhaust fan, 45, AC contactor, 46, capacitor, 47, lightning arrester

Specific implementation methods: the present application is not limited by the following examples, and the specific implementation manners can be determined according to the technical solutions of the application and actual conditions.

Embodiment: As shown in Figure 1-5, the integrated power distribution box for modular station area substation includes metering unit room 2, main incoming line unit room 27, bus bar insulation unit room 32, outlet drawer unit room 15, reactive power Compensation drawer unit chamber 21.

The main incoming line knife melting switch 34 is installed in the main incoming line unit room 27, and the main bus bar 39 of the main incoming line knife melting switch 34 is connected to the outgoing line drawer unit room 15 and the reactive power compensation drawer unit room 21. The primary static contact 29 terminals on the line side are fixed by the bus bar clamp and insulated and sealed by the bus bar insulation unit chamber 32 sealing plate. Make its entire system circuit connected as one;

The lightning protection module is installed in the main incoming line unit room 27, with 4-level micro-break 35 and lightning protection module 38 for surge protection, and an intelligent temperature and humidity controller 36 for temperature and humidity control to improve the reliability of equipment operation .

The outlet drawer unit room 15 includes three outlet units, which are installed in three drawers on the front of the cabinet, and the outlet circuit breaker 42, the outlet circuit monitoring and protection transformer 41 and the outlet unit instrument 19 are installed inside, which can be used according to the user's requirements. Different requirements are configured so that it can have the functions of current and energy measurement and remote monitoring, and the external output is performed through the secondary pin 28 at the rear; the outlet drawer unit room 15 has a good interlocking mechanism and position indication, and is equipped with The operating handle 16 of the circuit breaker, the observation window 17 for the position and state of the drawer, and the interlocking plate 18 of the remote-entry mechanism of the drawer provide a reliable guarantee.

A reactive power compensation drawer unit room 21 is arranged in the lower part of the drawer unit room, and a reactive power compensation controller 25 is installed inside for automatic switching compensation, and a reactive power compensation unit main switch 43 is installed inside to protect this module. The reactive power compensation unit The main switch 43 adopts electric operation, and is operated by the opening and closing button 24 of the reactive power compensation unit main switch. The internal interlocking mechanism is equipped to trip the reactive power compensation unit main switch 43 when the drawer is operated; the internal compensation branch circuit breaker is equipped. 22. AC contactor 45, capacitor 46, lightning arrester 47 perfect compensation device, and exhaust fan 44 ventilation measures.

Both sides of the box shell are equipped with incoming cable elbows 3 and outgoing cable elbows 9 to improve the protection level of the box, and the bottom plate on the outgoing line side is equipped with cable clamps 40 to provide users with an outgoing line.

When in use, the incoming cable of the transformer is connected by the incoming cable elbow 3, and the user-side cable is connected by the outgoing cable elbow 9. First operate the main incoming line knife fuse switch 34 to send power to the busbar insulation unit room 32 to make the incoming line side primary static contact 29 charged in the outgoing line drawer unit room 15 and the reactive power compensation drawer unit room 21. Use the equipped special operating handle to insert into the square hole inside the interlocking plate 18 of the drawer remote entry mechanism for remote entry operation, pay attention to observe the position indication in the drawer position status observation window 17, make it reach the "working" position and hear the click sound to indicate the drawer Already in place, operate the circuit breaker operating handle 16 to perform the closing operation and send power to the load; the reactive power compensation drawer unit room 21 also uses the equipped special operating handle to insert into the square hole inside the drawer remote entry mechanism interlocking plate 18 for remote entry operation, pay attention Observe the position indication in the drawer position state observation window 17, make it reach the "working" position and hear the click sound to indicate that the drawer is in place, operate the closing button of the reactive power compensation unit main opening, opening and closing button 24 to make it reactive The main switch 43 of the compensation unit is closed. After the circuit breaker 22 of the compensation branch is put into operation, the reactive power compensation controller 25 is adjusted for automatic compensation.

The above technical features are only embodiments of the present application, and non-essential technical features can be added or subtracted according to actual needs to meet the needs of different situations.

Claims (6)

1. A modular integrated power distribution box for station area, characterized in that it includes a metering unit room, a total incoming line unit room, a bus bar insulation unit room, an outgoing line drawer unit room, and a reactive power compensation drawer unit room. The main incoming line unit is equipped with a main incoming line knife fuse switch, and the main busbar of the main incoming line knife fuse switch is connected to the primary static contact terminal on the incoming line side of the outgoing line drawer unit room and the reactive power compensation drawer unit room, Rely on the bus bar clamp to fix and use the bus bar insulation unit room sealing plate to insulate and seal, so that the entire system circuit is connected as a whole. 2. The integrated power distribution box for modular station area substation as claimed in claim 1, characterized in that: the lightning protection module is installed indoors in the main incoming line unit, and the surge protection is carried out with 4-level micro-break and lightning protection module , and intelligent temperature and humidity controllers for temperature and humidity control to improve the reliability of equipment operation. 3. The integrated power distribution box for modular station area substation as claimed in claim 1, characterized in that: the outlet drawer unit room includes three outlet units, which are installed in the upper three drawers on the front of the cabinet, and the outlets are installed inside The circuit breaker, the outlet circuit monitoring protection transformer and the outlet unit instrument are externally output through the secondary pin at the rear. 4. The integrated power distribution box for modular station area substation according to claim 3, characterized in that: the outgoing line drawer unit room is also equipped with a circuit breaker operating handle, a drawer position state observation window, and a drawer remote entry mechanism interlocking plate. 5. The integrated power distribution box for modular station area substation according to claim 1, characterized in that: a reactive power compensation drawer unit room is arranged in the lower part of the drawer unit room, and a reactive power compensation controller is installed inside to perform automatic switching compensation, The main switch of the reactive power compensation unit is configured inside to protect this module. The main switch of the reactive power compensation unit is operated by electric operation, and it is operated by the opening and closing button of the main switch of the reactive power compensation unit. It is equipped with a chain mechanism inside when operating the drawer. It makes the main switch of the reactive power compensation unit trip; it is equipped with a complete compensation device for compensation branch circuit circuit breakers, AC contactors, capacitors, and lightning arresters. 6. The integrated power distribution box for modular substation area as claimed in claim 1, characterized in that: both sides of the box shell are equipped with incoming cable elbows and outgoing cable elbows, and cables are arranged on the bottom plate of the outgoing line side. folder.