Active filter cabinet control circuit

Abstract

The utility model relates to a control circuit of an active filter cabinet. A plurality of active filters are arranged on a main circuit; connecting the control end of the active filter to a control circuit; a temperature and humidity controller is connected into the control circuit at the same time; the temperature and humidity controller controls the temperature and humidity of the active filter through the control circuit; the technical problems that in an existing active filter cabinet control circuit, the requirements for temperature and humidity are not controlled, the power of the active filter cabinet is larger and larger, and an active filter in the active filter cabinet is often damaged due to unstable humidity and temperature are solved.

Description

Technical Field

[0001] The embodiment of the utility model relates to a filter cabinet control circuit, and in particular to an active filter cabinet control circuit. Background Art

[0002] In the existing active filter cabinet control circuit, the requirements for temperature and humidity are not controlled. As the power of the active filter cabinet becomes larger and larger, the active filter in the active filter cabinet is often damaged due to unstable humidity and temperature. Utility Model Content

[0003] The embodiment of the present utility model aims to provide an active filter cabinet control circuit capable of controlling humidity and temperature.

[0004] In order to achieve the above-mentioned purpose, the embodiment of the present utility model designs an active filter cabinet control circuit, which is characterized by comprising:

[0005] Main circuit;

[0006] Active filters, wherein a plurality of active filters are arranged on the main circuit;

[0007] A control circuit, connecting the control terminal of the active filter to the control circuit;

[0008] A temperature and humidity controller is simultaneously connected to the control circuit; the temperature and humidity controller controls the temperature and humidity of the active filter through the control circuit.

[0009] Furthermore, in the active filter cabinet control circuit of the present utility model, the main circuit further includes:

[0010] Incoming power supply;

[0011] An incoming current transformer is provided on the incoming power supply;

[0012] A circuit breaker, wherein the incoming power supply is connected to an incoming terminal of the circuit breaker;

[0013] An outgoing current transformer is provided on the outgoing terminal of the circuit breaker;

[0014] A fast fuse, connected to the inlet terminal of the fast fuse at the outlet terminal of the circuit breaker;

[0015] An active filter is connected to the outgoing terminal of the fast fuse;

[0016] A surge protector is connected to the incoming end of the fast fuse and is grounded at the outgoing end of the surge protector.

[0017] Furthermore, in the active filter cabinet control circuit of the present invention, the control circuit further includes:

[0018] A control power supply connected to an outlet terminal of the circuit breaker of the main circuit;

[0019] a fuse connected to the control power supply;

[0020] The output terminals of the fuse are respectively connected to the input terminal of the knob, the first output input terminal of the temperature and humidity controller, the second output input terminal of the temperature and humidity controller, the power supply of the meter, and the power supply of the temperature and humidity controller;

[0021] The outlet end of the knob is connected to the inlet end of the first fan; the outlet end of the first fan is connected to the neutral line;

[0022] The first output terminal of the temperature and humidity controller is connected to the output terminal of the knob, and then connected to the input terminal of the second fan; the output terminal of the second fan is connected to the neutral line;

[0023] The second output terminal of the temperature and humidity controller is connected to the input terminal of the heater; the output terminal of the heater is connected to the neutral line;

[0024] The temperature and humidity controllers are connected to the temperature and humidity sensors in sequence.

[0025] Furthermore, in the active filter cabinet control circuit of the present invention, the meter is connected to the outgoing terminals of the circuit breaker respectively.

[0026] Furthermore, in the active filter cabinet control circuit of the present invention, a controller is connected to the active filter.

[0027] Furthermore, in the active filter cabinet control circuit described in the present invention, the COM- terminals of the active filters are connected to each other and then respectively connected to the 24V- terminal of the controller; the COM- terminals of the active filters are also respectively connected to the input terminals of the stop button and the start button; the output terminals of the start button are respectively connected to the first input terminal of the active filter; the output terminals of the stop button are respectively connected to the second input terminal of the active filter; and one of the COM+ terminals of the active filter is connected to the 24V+ terminal of the controller.

[0028] Furthermore, in the active filter cabinet control circuit of the present utility model, the outgoing current transformer includes:

[0029] a first current transformer, wherein a terminal S1 of the first current transformer is connected to a terminal 19 of a multi-function meter;

[0030] a second current transformer, wherein a terminal S1 of the second current transformer is connected to a terminal 21 of a multi-function meter;

[0031] a third current transformer, wherein the S1 terminal of the third current transformer is connected to the 23 terminal of the multi-function meter;

[0032] The S2 ends of the first current transformer, the second current transformer, and the third current transformer are connected to each other and then grounded;

[0033] The 20th, 22nd and 24th terminals of the multi-function meter are respectively connected to the GIA+ terminal, GIB+ terminal and GIC+ terminal of the first active filter;

[0034] The GIA- terminal, GIB- terminal and GIC- terminal of the first active filter are connected to the GIA+ terminal, GIB+ terminal and GIC+ terminal of the second active filter;

[0035] The GIA- terminal, GIB- terminal, and GIC- terminal of the second active filter are connected to the GIA+ terminal, GIB+ terminal, and GIC+ terminal of the third active filter;

[0036] The GIA-terminal, the GIB-terminal, and the GIC-terminal of the third active filter are connected to each other and then grounded.

[0037] Furthermore, in the active filter cabinet control circuit of the present invention, the incoming current transformer further includes:

[0038] The S2 ends of the fourth current transformer, the fifth current transformer, and the sixth current transformer are connected to each other and then grounded;

[0039] The S1 terminals of the fourth current transformer, the fifth current transformer, and the sixth current transformer are respectively connected to the IA+ terminal, the I B+ terminal, and the IC+ terminal of the first active filter;

[0040] The IA- terminal, I B- terminal, and IC- terminal of the first active filter are connected to the IA+ terminal, I B+ terminal, and IC+ terminal of the second active filter;

[0041] The IA- terminal, I B- terminal, and IC- terminal of the second active filter are connected to the IA+ terminal, I B+ terminal, and IC+ terminal of the third active filter;

[0042] The IA-terminal, the I B-terminal, and the I C-terminal of the third active filter are connected to each other and then grounded.

[0043] Furthermore, in the active filter cabinet control circuit described in the present invention, the 15th, 16th and 17th terminals of the multi-function meter are connected to the outgoing terminals of the circuit breaker; and the first, second and third fuses are installed respectively.

[0044] Furthermore, in the active filter cabinet control circuit of the present invention, a communication circuit is connected to the 12th terminal and the 13th terminal of the multi-function meter.

[0045] Compared with the prior art, the implementation method of the present utility model is to set up several active filters on the main circuit;

[0046] The control end of the active filter is connected to the control circuit; a temperature and humidity controller is simultaneously connected to the control circuit; the temperature and humidity controller controls the temperature and humidity of the active filter through the control circuit; this solves the technical problem that the control circuit of the existing active filter cabinet does not control the temperature and humidity requirements. As the power of the active filter cabinet increases, the active filter in the active filter cabinet is often damaged due to unstable humidity and temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic diagram of the main circuit of the utility model;

[0048] Figure 2 This is a schematic diagram of the control circuit of the utility model;

[0049] Figure 3 This is a schematic diagram of the start-stop control circuit of the utility model;

[0050] Figure 4 This is a schematic diagram of the control circuit of the measurement loop of the utility model;

[0051] Figure 5 This is a schematic diagram of the voltage measurement circuit of the present utility model;

[0052] Figure 6 This is a schematic diagram of the meter communication circuit of the present utility model. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in various embodiments of the present invention to facilitate a better understanding of the present application. However, even without these technical details and the various variations and modifications based on the following embodiments, the technical solutions claimed in the claims of this application can be achieved.

[0054] The embodiment of the present utility model relates to an active filter cabinet control circuit, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 Shown, including:

[0055] The main circuit in this embodiment is used to connect active filters APF1 to APF3;

[0056] Several active filters APF1 to APF3 are arranged on the main circuit; the active filters APF1 to APF3 mainly play the function of active filtering;

[0057] The control terminals of the active filters APF1 to APF3 are connected to the control circuit; the control circuit mainly controls the operation of the active filters APF1 to APF3;

[0058] A temperature and humidity controller (THC) is also connected to the control circuit; it controls the temperature and humidity of the active filter (THC) through the control circuit. The THC primarily controls the temperature and humidity of the active filter cabinet, thereby reducing malfunctions of the active filters APF1 to APF3. This addresses the technical issue of the existing active filter cabinet control circuit failing to control temperature and humidity. As the power of active filter cabinets increases, this often leads to damage to the active filters APF1 to APF3 due to unstable humidity and temperature.

[0059] In order to achieve the above technical effects, in the active filter cabinet control circuit of this embodiment, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the main circuit also includes:

[0060] In this embodiment, the incoming power supplies L1, L2, and L3 are external power supplies;

[0061] Incoming current transformers TA4, TA5, and TA6 are provided on the incoming power supplies L1, L2, and L3; the incoming current transformers TA4, TA5, and TA6 are used to sense the current of the incoming power supplies;

[0062] The incoming power supplies L1, L2, and L3 are connected to the incoming terminals of the circuit breaker QF; the circuit breaker QF is used to control the on / off of the incoming power supplies L1, L2, and L3;

[0063] Outgoing current transformers TA1, TA2, and TA3 are provided on the outgoing terminal of the circuit breaker QF; the outgoing current transformers TA1, TA2, and TA3 are used to detect the current on the outgoing terminal;

[0064] The outgoing terminal of the circuit breaker QF is connected to the incoming terminal of the fast fuses QS1, QS2, and QS3; the fast fuses QS1, QS2, and QS3 are used for short-circuit protection.

[0065] Active filters APF1 to APF3 are connected to the outgoing terminals of fast-acting fuses QS1, QS2, and QS3; active filters APF1 to APF3 perform filtering;

[0066] Connect the incoming line terminals of the fast-acting fuses QS1, QS2, and QS3 to the incoming line terminals of the surge protector (SPD). Connect the outgoing line terminals of the SPD to ground. The SPD is used for current surge protection.

[0067] In order to achieve the above technical effects, in the active filter cabinet control circuit of this embodiment, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the control circuit further includes:

[0068] Connect the control power supply L11 to the outlet terminal of the circuit breaker QF of the main circuit; the control power supply L11 provides power for the control circuit;

[0069] Connect fuse FU to the control power supply; fuse FU is used for short-circuit protection of the control power supply;

[0070] The outgoing terminals of the fuse FU are respectively connected to the incoming terminals of the knob SA, the first output incoming terminal THC-1 of the temperature and humidity controller, the second output incoming terminal THC-2 of the temperature and humidity controller, the power supply of the meter PM, and the power supply of the temperature and humidity controller THC;

[0071] The outlet of the knob SA is connected to the inlet of the first fan FJ1; the outlet of the first fan FJ1 is connected to the neutral line N;

[0072] The first output terminal THC-1 of the temperature and humidity controller is connected to the output terminal of the knob SA, and then to the input terminal of the second fan FJ2; the output terminal of the second fan FJ2 is connected to the neutral line N; the knob SA manually controls the temperature and humidity of the first fan FJ1 and the second fan FJ2;

[0073] The second output terminal THC-2 of the temperature and humidity controller is connected to the input terminal of the heater R; the output terminal of the heater R is connected to the neutral line N; the heater R is mainly used to control the temperature;

[0074] The temperature and humidity controller THC is connected to a temperature and humidity sensor THS, which detects temperature and humidity. This solves the technical problem of the existing active filter cabinet control circuit failing to control temperature and humidity. As the power of active filter cabinets increases, unstable humidity and temperature often damage the active filter in the active filter cabinet.

[0075] In order to achieve the above technical effects, in the active filter cabinet control circuit of this embodiment, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the meter PM is connected to the outgoing terminals of the circuit breaker QF respectively; the voltage of the outgoing terminals of the circuit breaker Q is provided on the meter PM.

[0076] In order to achieve the above technical effects, in the active filter cabinet control circuit of this embodiment, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the active filters APF1 to APF3 are connected to a controller AOP, which is used to control the active filters APF1 to APF3 to perform filtering.

[0077] In order to achieve the above technical effects, in the active filter cabinet control circuit of this embodiment, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the COM- terminals of active filters APF1-APF3 are connected to each other and then to the 24V- terminal of the controller AOP. The COM- terminals of active filters APF1-APF3 are also connected to the input terminals of the stop button SS and the start button SF, respectively. The output terminals of the start button SF are connected to the first input terminal DI1 of active filters APF1-APF3, respectively. The output terminals of the stop button SS are connected to the second input terminal DI2 of active filters APF1-APF3, respectively. The COM+ terminal of one active filter is connected to the 24V+ terminal of the controller AOP. This structure enables the controller AOP to control active filters APF1-APF3.

[0078] In order to achieve the above technical effects, in the active filter cabinet control circuit of this embodiment, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the outgoing current transformers TA1, TA2, and TA3 include:

[0079] The S1 terminal of the first current transformer TA1 is connected to the 19th terminal of the multi-function meter PM; the first current transformer TA1 is used to connect the mutual induction current of the first phase to the multi-function meter PM;

[0080] The S1 terminal of the second current transformer TA2 is connected to the 21 terminal of the multi-function meter; the second current transformer TA2 is used to connect the mutual induction current of the second phase to the multi-function meter PM;

[0081] The S1 terminal of the third current transformer TA3 is connected to the 23 terminal of the multi-function meter; the third current transformer TA3 is used to connect the mutual induction current of the third phase to the multi-function meter PM;

[0082] The S2 terminals of the first current transformer TA1, the second current transformer TA2, and the third current transformer TA3 are connected to each other and then grounded;

[0083] The 20th, 22nd and 24th terminals of the multi-function meter PM are respectively connected to the GIA+ terminal, the GI B+ terminal and the GIC+ terminal of the first active filter APF1;

[0084] The GIA- terminal, GI B- terminal, and GIC- terminal of the first active filter APF1 are connected to the GIA+ terminal, GI B+ terminal, and GIC+ terminal of the second active filter APF2;

[0085] The GIA- terminal, GI B- terminal, and GIC- terminal of the second active filter APF2 are connected to the GIA+ terminal, GI B+ terminal, and GIC+ terminal of the third active filter APF3;

[0086] The GIA-terminal, GIB-terminal and GIC-terminal of the third active filter APF3 are connected to each other and then grounded. The above structure realizes the start and stop control of the active filters APF1-APF3.

[0087] In order to achieve the above technical effects, in the active filter cabinet control circuit of this embodiment, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the incoming current transformers TA4, TA5, and TA6 also include:

[0088] The S2 terminals of the fourth current transformer TA4, the fifth current transformer TA5, and the sixth current transformer TA6 are connected to each other and then grounded;

[0089] The S1 terminals of the fourth current transformer TA4, the fifth current transformer TA5, and the sixth current transformer TA6 are respectively connected to the IA+ terminal, the I B+ terminal, and the IC+ terminal of the first active filter APF1;

[0090] The IA- terminal, I B- terminal, and IC- terminal of the first active filter APF1 are connected to the IA+ terminal, I B+ terminal, and IC+ terminal of the second active filter APF2;

[0091] The IA- terminal, I B- terminal, and IC- terminal of the second active filter APF2 are connected to the IA+ terminal, I B+ terminal, and IC+ terminal of the third active filter APF3;

[0092] The IA-, I B-, and IC- terminals of the third active filter APF3 are connected to each other and then grounded. The incoming current transformers TA4, TA5, and TA6 complete the connection of the current measurement loop.

[0093] In order to achieve the above technical effects, in the active filter cabinet control circuit of this embodiment, as shown in FIG. Figure 5 As shown, terminals 15, 16, and 17 of the multimeter PM are connected to the outgoing terminals of the circuit breaker QF, and first, second, and third fuses FU1, FU2, and FU3 are installed, respectively. These fuses provide short-circuit protection for the multimeter PM.

[0094] In order to achieve the above technical effects, in the active filter cabinet control circuit of this embodiment, as shown in FIG. Figure 6 As shown, the communication circuits A5 and B5 are connected to the 12th and 13th terminals of the multi-function meter PM, so that the multi-function meter PM can realize remote function control.

[0095] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An active filter cabinet control circuit, characterized in that: include: Main circuit; Active filters, with several active filters arranged on the main circuit; A control circuit, connecting the control terminal of the active filter to the control circuit; A temperature and humidity controller is simultaneously connected to the control circuit; the temperature and humidity controller controls the temperature and humidity of the active filter through the control circuit.

2. The active filter cabinet control circuit according to claim 1, characterized in that: The main circuit further includes: Incoming power supply; An incoming current transformer is provided on the incoming power supply; A circuit breaker, wherein the incoming power supply is connected to an incoming terminal of the circuit breaker; An outgoing current transformer is provided on the outgoing terminal of the circuit breaker; A fast fuse, connected to the inlet terminal of the fast fuse at the outlet terminal of the circuit breaker; An active filter is connected to the outgoing terminal of the fast fuse; A surge protector is connected to the incoming end of the fast fuse and is grounded at the outgoing end of the surge protector.

3. The active filter cabinet control circuit according to claim 1, characterized in that: The control circuit further includes: A control power supply connected to an outlet terminal of the circuit breaker of the main circuit; a fuse connected to the control power supply; The output terminals of the fuse are respectively connected to the input terminal of the knob, the first output input terminal of the temperature and humidity controller, the second output input terminal of the temperature and humidity controller, the power supply of the meter, and the power supply of the temperature and humidity controller; The outlet end of the knob is connected to the inlet end of the first fan; the outlet end of the first fan is connected to the neutral line; The first output terminal of the temperature and humidity controller is connected to the output terminal of the knob, and then connected to the input terminal of the second fan; the output terminal of the second fan is connected to the neutral line; The second output terminal of the temperature and humidity controller is connected to the input terminal of the heater; the output terminal of the heater is connected to the neutral line; The temperature and humidity controllers are connected to the temperature and humidity sensors in sequence.

4. The active filter cabinet control circuit according to claim 3, characterized in that: The meters are connected to the outgoing terminals of the circuit breakers respectively.

5. The active filter cabinet control circuit according to claim 1, characterized in that: A controller is connected to the active filter.

6. The active filter cabinet control circuit according to claim 5, characterized in that: After being connected to each other, the COM- terminals of the active filter are respectively connected to the 24V- terminal of the controller; the COM- terminals of the active filter are also respectively connected to the input terminals of the stop button and the start button; the output terminals of the start button are respectively connected to the first input terminal of the active filter; the output terminals of the stop button are respectively connected to the second input terminal of the active filter; and one of the COM+ terminals of the active filter is connected to the 24V+ terminal of the controller.

7. The active filter cabinet control circuit according to claim 2, characterized in that: The outgoing current transformer comprises: a first current transformer, wherein a terminal S1 of the first current transformer is connected to a terminal 19 of a multi-function meter; a second current transformer, wherein a terminal S1 of the second current transformer is connected to a terminal 21 of a multi-function meter; a third current transformer, wherein the S1 terminal of the third current transformer is connected to the 23 terminal of the multi-function meter; The S2 ends of the first current transformer, the second current transformer, and the third current transformer are connected to each other and then grounded; The 20th, 22nd and 24th terminals of the multi-function meter are respectively connected to the GIA+ terminal, GIB+ terminal and GIC+ terminal of the first active filter; The GIA-, GIB-, and GIC- terminals of the first active filter are connected to the GIA+, GIB+, and GIC+ terminals of the second active filter; The GIA- terminal, GIB- terminal, and GIC- terminal of the second active filter are connected to the GIA+ terminal, GIB+ terminal, and GIC+ terminal of the third active filter; The GIA-terminal, GIB-terminal, and GIC-terminal of the third active filter are connected to each other and then grounded.

8. The active filter cabinet control circuit according to claim 2, characterized in that: The incoming current transformer further includes: The S2 ends of the fourth current transformer, the fifth current transformer, and the sixth current transformer are connected to each other and then grounded; The S1 terminals of the fourth current transformer, the fifth current transformer, and the sixth current transformer are respectively connected to the IA+ terminal, the IB+ terminal, and the IC+ terminal of the first active filter; The IA- terminal, IB- terminal, and IC- terminal of the first active filter are connected to the IA+ terminal, IB+ terminal, and IC+ terminal of the second active filter; The IA- terminal, the IB- terminal, and the IC- terminal of the second active filter are connected to the IA+ terminal, the IB+ terminal, and the IC+ terminal of the third active filter; The IA-terminal, the IB-terminal, and the IC-terminal of the third active filter are connected to each other and then grounded.

9. The active filter cabinet control circuit according to claim 7, characterized in that: The 15th, 16th and 17th terminals of the multi-function meter are connected to the outgoing terminals of the circuit breaker; and the first, second and third fuses are installed respectively.

10. The active filter cabinet control circuit according to claim 7, characterized in that: A communication circuit is connected to the 12th terminal and the 13th terminal of the multi-function meter.

Images