CN209913505U - Intelligent low-voltage reactive power compensator - Google Patents

Abstract

The utility model provides an intelligent low pressure reactive power compensator, including bus and inlet wire cabinet interface, its characterized in that, the one end of inlet wire cabinet interface is connected in enlarging the circuit foundation volume, be connected with the low pressure arrester in the live wire of bus, be connected with fuse and measurement mutual-inductor and miniature circuit breaker in the bus, the one end series connection of measuring the mutual-inductor has the sword fused switch, miniature circuit breaker's one end series connection has the controller, the one end of controller is connected with the data plug wire, and intelligent capacitor has integrateed modules such as protection, control, communication, can singly use and many networking uses, compares traditional reactive power compensator and only can manual control or shortcoming such as shut down owing to the compensation controller damages, and intelligent electric capacity has temperature sensing protection, can in time monitor overheated problem, realizes the excess temperature warning, And (4) protecting. The using effect is better compared with the traditional mode.

Description

Intelligent low-voltage reactive power compensator

Technical Field

The utility model relates to a reactive power compensation technical field, concretely relates to intelligent low pressure reactive power compensator.

Background

The intelligent capacitor integrates modern measurement and control, power electronics, network communication, automatic control, advanced technologies such as a power capacitor and the like, changes the backward controller technology of the traditional reactive compensation device and the backward switching technology of a mechanical contactor or a mechatronic switch as a switching capacitor, and changes the bulky and heavy structural mode of the traditional reactive compensation device, so that the new generation of low-voltage reactive compensation equipment has the characteristics of better compensation effect, smaller volume, lower power consumption, lower price, more cost saving, more flexibility in use, more convenience in maintenance, longer service life and higher reliability, and meets the higher requirement of the modern power grid on reactive compensation.

Disclosure of Invention

An object of the utility model is to provide an intelligent low pressure reactive power compensator just in order to solve above-mentioned problem.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides an intelligent low-voltage reactive power compensator, which comprises a bus and an inlet cabinet interface, and is characterized in that one end of the inlet cabinet interface is connected in an amplifying circuit area, a low-voltage arrester is connected in the live wire of the bus, a fuse, a measuring mutual inductor and a miniature circuit breaker are connected in the bus, one end of the measuring mutual inductor is connected with a fuse switch in series, one end of the miniature circuit breaker is connected with a controller in series, one end of the controller is connected with a data plug wire, a discharge indicator lamp is connected in parallel in the bus, the other end of the discharge indicator lamp is connected at one end of a capacitor connected in parallel in the bus, one end of the miniature circuit breaker is connected with one end of a voltage change-over switch, the other end of the voltage change-over switch is connected with an alternating-current voltmeter, the alternating-current voltmeter is connected in a voltage measuring, one side of the alternating-current voltmeter is provided with an alternating-current ammeter, one end of the alternating-current ammeter is connected with a measuring mutual inductor, and the alternating-current ammeter is arranged in the current measuring loop.

As a preferred technical scheme of the utility model, the inside module such as protection, control, communication that has integrateed of condenser, and the condenser is provided with ten groups and is connected through the data plug wire.

As an optimized technical scheme of the utility model, the inside fling-cut switch department of condenser is provided with the thyristor, and one side of condenser links to each other with the pilot lamp through the wire.

As an optimal technical scheme of the utility model, the internally mounted of sword fused switch has the fusible core, the one end of voltage transfer switch and data plug wire all links to each other with miniature circuit breaker.

As an optimized technical scheme of the utility model, the reactive power of condenser is 30Kvar, be provided with three AC current meters of group in the current measurement return circuit.

The utility model discloses the beneficial effect who reaches is: the intelligent capacitor integrates modules such as protection, control and communication, can be singly used and used in a plurality of networks, can only be manually controlled or shut down due to the damage of a compensation controller, and has temperature sensing protection, so that the intelligent capacitor can timely monitor overheating problems and realize over-temperature alarm and protection. Compared with the traditional capacitor, the capacitor is easy to bulge due to overheating. Therefore, the intelligent capacitor has longer service life compared with the traditional capacitor. The intelligent capacitor switching switch adopts a thyristor for switching, and can form a circuit for circuit protection and magnetic latching relay through zero-crossing triggering and conduction so as to realize zero-crossing switching of the capacitor, so that no inrush current impact exists in the capacitor switching process, and the service life of the intelligent capacitor is longer. The intelligent capacitor has the functions of overvoltage and undervoltage protection, phase loss protection, overcurrent protection, harmonic distortion protection and the like, can automatically quit operation when a fault occurs so as to achieve the purpose of protection, automatically puts into operation after the fault is relieved, and has better reliability compared with the traditional method which only depends on fuse protection or circuit breaker protection. The intelligent capacitor can adopt various switching modes such as direct switching, cyclic switching, integral operation method and the like in the switching mode, the compensation effect can be ensured, the switching times can be reduced, unnecessary switching is avoided, the practicability is high, the function is stable, and the using effect is better than that of the traditional mode.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of the capacitor control connection circuit structure of the present invention.

Fig. 2 is a schematic diagram of a part of the circuit structure of the present invention.

In the figure: 1. a bus; 2. an inlet cabinet interface; 3. amplifying the circuit area; 4. a low voltage arrester; 5. a fuse; 6. a measuring transformer; 7. a miniature circuit breaker; 8. a knife-shaped fuse switch; 9. a controller; 10. inserting and pulling a data line; 11. a discharge indicator light; 12. a capacitor; 13. a voltage transfer switch; 14. an alternating current voltmeter; 15. a voltage measurement circuit; 16. an alternating current meter; 17. a current measurement loop.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example 1

As shown in fig. 1-2, the utility model provides an intelligent low-voltage reactive power compensator, which comprises a bus 1 and an inlet cabinet interface 2, wherein one end of the inlet cabinet interface 2 is connected in an amplifying circuit volume 3, a low-voltage lightning arrester 4 is connected in the live wire of the bus 1, a fuse 5, a measuring mutual inductor 6 and a miniature circuit breaker 7 are connected in the bus 1, one end of the measuring mutual inductor 6 is connected in series with a fuse switch 8, one end of the miniature circuit breaker 7 is connected in series with a controller 9, one end of the controller 9 is connected with a data plug wire 10, a discharge indicator lamp 11 is connected in parallel in the bus 1, the other end of the discharge indicator lamp 11 is connected at one end of a capacitor 12 connected in parallel in the bus 1, one end of the miniature circuit breaker 7 is connected with one end of a voltage change-over switch 13, the other end of the voltage change-over switch 13 is connected with an ac voltmeter 14, the alternating current voltmeter 14 is connected in the voltage measuring circuit 15, an alternating current ammeter 16 is arranged on one side of the alternating current voltmeter 14, one end of the alternating current ammeter 16 is connected with the measuring mutual inductor 6, and the alternating current ammeter 16 is arranged in the current measuring circuit 17.

Furthermore, modules such as protection, control and communication are integrated in the capacitor 12, and the capacitor 12 is provided with ten groups and connected through data plug lines.

Further, a thyristor is arranged at a switching switch inside the capacitor 12, and one side of the capacitor 12 is connected with an indicator light through a lead.

The fuse core is arranged in the fuse knife switch 8, and one end of the voltage conversion switch 13 and one end of the data plug wire 10 are both connected with the miniature circuit breaker 7.

The reactive power of the capacitor 12 is 30Kvar, and three sets of alternating current meters 16 are arranged in the current measurement loop 17.

The device is an intelligent low pressure reactive power compensator, the protection has been integrated in the 12 inner structure of intelligent condenser, control, module such as communication, can singly use and many networking uses, each group's condenser 12 concatenates through data plug wire 10 and links to each other in circuit structure, the reactive power of its condenser 12 is 30Kvar, compare traditional reactive power compensator because the compensation controller damages then can only manual control or shortcoming such as shut down, intelligent capacitance has the temperature sensing protection, can in time monitor overheat problem, realize the excess temperature warning, the protection, and intelligent condenser 12 is more permanent than traditional condenser life-span. In a bus 1 of the circuit, devices connected with the bus 1 are connected through a fuse, and a switching switch in a capacitor 12 is switched by a thyristor, so that the circuit is protected, a magnetic latching relay and a circuit can be formed by zero-crossing triggering and conducting, zero-crossing switching of the capacitor is realized, inrush current impact does not exist in the switching process of the capacitor, the service life of the intelligent capacitor is longer, and the safety of circuit connection is improved. In the switching mode of the capacitor 12, various switching modes such as direct switching, cyclic switching, integral operation and the like can be adopted, so that the compensation effect can be ensured, the switching times can be reduced, unnecessary switching can be avoided, when a fault occurs, the capacitor 12 can automatically quit operation to achieve the protection purpose, and when the fault is relieved, the capacitor is automatically put into operation, and compared with the traditional mode of only depending on fuse protection or circuit breaker protection, the reliability is better.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides an intelligent low pressure reactive power compensator, includes bus (1) and inlet wire cabinet interface (2), its characterized in that, the one end of inlet wire cabinet interface (2) is connected in enlarging circuit base product (3), be connected with low pressure arrester (4) in the live wire of bus (1), be connected with fuse (5) and measure mutual-inductor (6) and miniature circuit breaker (7) in bus (1), the one end series connection of measuring mutual-inductor (6) has sword fuse switch (8), the one end series connection of miniature circuit breaker (7) has controller (9), the one end of controller (9) is connected with data plug wire (10), parallel connection has discharge indicator lamp (11) in bus (1), the other end of discharge indicator lamp (11) is connected in the one end of parallel connection condenser (12) in bus (1), the one end of miniature circuit breaker (7) is connected with the one end at voltage transfer switch (13), the other end of voltage transfer switch (13) is connected with alternating-current voltmeter (14), alternating-current voltmeter (14) are connected in voltage measurement return circuit (15), one side of alternating-current voltmeter (14) is provided with alternating-current ammeter (16), the one end of alternating-current ammeter (16) is connected with measurement mutual-inductor (6), alternating-current ammeter (16) set up in current measurement return circuit (17).

2. An intelligent low-voltage reactive power compensator according to claim 1, characterized in that protection, control, communication and other modules are integrated in the capacitor (12), and ten groups of capacitors (12) are provided and connected by data plug lines.

3. The intelligent low-voltage reactive power compensator according to claim 1, wherein a thyristor is arranged at a switching switch inside the capacitor (12), and one side of the capacitor (12) is connected with an indicator lamp through a lead.

4. An intelligent low-voltage reactive power compensator according to claim 1, characterized in that a fusible core is installed inside the knife-fuse switch (8), and one end of the voltage transfer switch (13) and one end of the data plug wire (10) are both connected with the miniature circuit breaker (7).

5. An intelligent low-voltage reactive power compensator according to claim 1, characterized in that the reactive power of the capacitor (12) is 30Kvar, and three sets of alternating current meters (16) are arranged in the current measurement loop (17).

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