CN213402462U

CN213402462U - Large-capacity capacitance compensation control system

Info

Publication number: CN213402462U
Application number: CN202022483199.1U
Authority: CN
Inventors: 王新成; 冯锦刚; 闫化磊
Original assignee: Honle Group Co ltd
Current assignee: Honle Group Co ltd
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-06-08
Anticipated expiration: 2030-10-31

Abstract

The utility model relates to a large capacity capacitance compensation control system, including main cabinet and assistance cabinet, set up controller K in main cabinet or assistance cabinet, the power factor table COS of being connected with outside alternating current power supply, controller K connects outside alternating current power supply and gathers outside alternating current power supply's voltage signal and current signal, be provided with major loop, main control circuit in the main cabinet, be provided with supplementary return circuit, auxiliary control circuit in the assistance cabinet, major loop includes many main branch roads, and auxiliary circuit includes many supplementary branch roads, main control circuit includes many main secondary branch roads, and auxiliary control circuit includes many supplementary secondary branch roads. This practical large capacity capacitance compensation control system has adopted the mode of main cabinet, assistance cabinet, needs the great occasion of compensation capacity to realize the switching of more compensating capacitor of simultaneous control at electric power operation system, and automatic/manual switching electric capacity circuit is simple moreover, and the switching action is reliable stable.

Description

Large-capacity capacitance compensation control system

Technical Field

The utility model relates to an electric power system technical field especially relates to a large capacity capacitance compensation control system.

Background

The capacitance compensation is reactive compensation or power factor compensation, and in industrial and domestic electric loads, the inductive load accounts for a large proportion, such as: asynchronous motors, transformers, fluorescent lamps, etc., which consume a significant proportion of the reactive power supplied by the power system. In addition, the reactor, overhead line, etc. of the power system also consume some reactive power, which reduces the capacity use efficiency of the power source, and can be improved by appropriately adding capacitance to the system.

Different electric power operation systems need the switching of different quantity of electric capacity, and some electric power operation systems need to compensate the capacity great, and ordinary electric power compensation cabinet can't satisfy the switching of actual compensation capacity because the restriction of space, can't make the electric energy quality of electric power operation system promote to the target level, and automatic/manual switching capacitor line in the current capacitance compensation control system has the defect of wiring complicacy moreover.

Disclosure of Invention

In view of this, the utility model aims at providing a large capacity capacitance compensation control system can satisfy the great electric power operation system of compensation capacity, and automatic/manual switching electric capacity circuit is simple, the switching is reliable stable moreover.

In order to realize the purpose, the utility model adopts the high-capacity capacitance compensation control system, which comprises a main cabinet, an auxiliary cabinet, a controller K arranged in the main cabinet or the auxiliary cabinet, and a power factor meter COS connected with an external alternating current power supply, wherein the controller K is connected with the external alternating current power supply to collect the voltage signal and the current signal of the external alternating current power supply, a main loop, a main control loop are arranged in the main cabinet, an auxiliary loop and an auxiliary control loop are arranged in the auxiliary cabinet, the main loop comprises a plurality of main primary branches, the auxiliary loop comprises a plurality of auxiliary primary branches, the main primary branches and the auxiliary primary branches comprise a fuse FU, a normally open contact of a contactor KM, a thermal relay FR, a reactor L and a compensation capacitor C which are sequentially connected in series, the main control loop comprises a plurality of main secondary branches, and the auxiliary control loop comprises a plurality of auxiliary secondary branches, main secondary branch road and supplementary secondary branch road all include the protection normally closed contact KH of contactor KM coil, reactor temperature sensor DK, thermorelay FR that establish ties in proper order, change over switch SA and controller K's output is connected respectively to the one end of contactor KM coil on the main secondary branch road, and change over switch SA1 and controller K's output is connected respectively to the one end of contactor KM coil on the supplementary secondary branch road.

The utility model discloses large capacity capacitance compensation control system's working method as follows: when the controller is automatically switched, the change-over switch SA and the change-over switch SA1 are switched to automatic positions, and the controller automatically switches in required compensation capacitors through sampled current and voltage signals so as to improve the quality of electric energy; when switching is carried out manually, the change-over switch SA and the change-over switch SA1 are switched to a manual position, the controller loses power, the power factor meter works with power, a certain amount of compensation capacitors are manually input according to the display numerical value of the power factor meter, so that the power quality is improved, the protection normally closed contacts of the reactor temperature sensor and the thermal relay are arranged in the secondary control loop, the reactor temperature and the line overload are respectively monitored, the working stability of the compensation control system is improved, and the service life of an electric appliance is prolonged. The high-capacity capacitance compensation control system adopts a main cabinet and an auxiliary cabinet mode, the compensation capacitors in the main cabinet and the auxiliary cabinet can be automatically switched by a controller K or the switching of the compensation capacitors in the main cabinet and the auxiliary cabinet can be respectively and manually controlled by a change-over switch SA and a change-over switch SA1, the switching of more compensation capacitors can be simultaneously controlled on occasions where the power operation system needs larger compensation capacity, the automatic/manual switching of the capacitance circuit is simple, and the switching action is reliable and stable.

The utility model discloses still be provided with many main signal return circuits in further setting up to the main cabinet, still be provided with many auxiliary signal return circuits in the supplementary cabinet, main signal return circuit and auxiliary signal return circuit all include normally open contact, the pilot lamp HW of the contactor KM who establishes ties in proper order.

The main signal loop and the auxiliary signal loop respectively indicate the working states of the corresponding main primary branch and the auxiliary primary branch, namely, the switching state of the compensation capacitor is displayed by using the indicating lamp.

This practicality further sets up to be connected with drop-out fuse, transformer, arrester before main branch road and the supplementary branch road respectively.

This practicality further sets up to main once branch road and main secondary branch road and is 10.

This utility further sets up to supplementary primary branch road and supplementary secondary branch road and is 10.

The main cabinet and the auxiliary cabinet are internally provided with 10 compensating circuit control loops, so that the electric power running system with large compensation capacity can be satisfied.

Drawings

Fig. 1 is an electrical connection diagram of a main loop in a main cabinet according to an embodiment of the present invention.

Fig. 2 is an electrical connection diagram of an auxiliary loop in an auxiliary cabinet according to an embodiment of the present invention.

Fig. 3 is an electrical connection diagram of the main control loop, the main signal loop and the controller in the main cabinet according to the embodiment of the present invention.

Fig. 4 is an electrical connection diagram of an auxiliary control loop and an auxiliary signal loop in the auxiliary cabinet according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1-4, the utility model relates to a large capacity capacitance compensation control system, including main cabinet and assistance cabinet, set up controller K in main cabinet or assistance cabinet, the power factor table COS of being connected with outside alternating current power supply, controller K connects outside alternating current power supply and gathers the voltage signal and the current signal of outside alternating current power supply (L12, L13), be provided with main loop, main control loop in the main cabinet, be provided with auxiliary loop, auxiliary control loop in the assistance cabinet, main loop includes ten main once branches 1, and auxiliary loop includes ten auxiliary once branches 2, it is connected with drop-out fuse, transformer, arrester respectively to divide equally before main once branch and auxiliary once branch, main once branch 1 and auxiliary once branch 2 all include fuse FU, contactor KM's normally open contact, thermal relay FR, the normal open contact who establishes ties in proper order, thermal relay FR, Reactor L, compensation capacitor C, main control circuit includes ten main secondary branch roads 3, and auxiliary control circuit includes ten auxiliary secondary branch roads 4, main secondary branch road 3 and auxiliary secondary branch road 4 all include contactor KM coil, reactor temperature sensor DK, the protection normally closed contact KH of thermorelay FR that establish ties in proper order, the one end of contactor KM coil is connected respectively to the one end that change over switch SA corresponds and the output of controller K on main secondary branch road 3, and the other end that change over switch SA corresponds and the protection normally closed contact KH of thermorelay FR are connected respectively to external power supply, and the one end of contactor KM coil is connected respectively to the one end that change over switch SA1 corresponds and the output of controller K on auxiliary secondary branch road 4, and the other end that change over switch SA corresponds and the protection normally closed contact KH of thermorelay FR are connected respectively to external power supply, still be provided with ten main signal return circuits 5 in the main cabinet, still be provided with ten auxiliary signal return circuits 6 in the supplementary cabinet, main signal return circuit 5 and auxiliary signal return circuit 6 all include the normally open contact, the pilot lamp HW of contactor KM that establish ties in proper order, and external power supply is connected respectively to the one end of the normally open contact of contactor KM and the one end of pilot lamp HW.

According to the above embodiment, the utility model discloses large capacity capacitance compensation control system's working method as follows: when the controller is automatically switched, the change-over switch SA and the change-over switch SA1 are switched to automatic positions, and the controller automatically switches in required compensation capacitors through sampled current and voltage signals so as to improve the quality of electric energy; when the switching is carried out manually, the change-over switch SA and the change-over switch SA1 are switched to a manual position, the controller loses power, the power factor meter is electrified to work, and a certain amount of compensation capacitors are manually input according to the display numerical value of the power factor meter, so that the power quality is improved. The high-capacity capacitance compensation control system adopts a main cabinet and an auxiliary cabinet mode, the compensation capacitors in the main cabinet and the auxiliary cabinet can be automatically switched by a controller K or the switching of the compensation capacitors in the main cabinet and the auxiliary cabinet can be respectively and manually controlled by a change-over switch SA and a change-over switch SA1, the switching of more compensation capacitors can be simultaneously controlled on occasions where the power operation system needs larger compensation capacity, the automatic/manual switching of the capacitance circuit is simple, and the switching action is reliable and stable.

Claims

1. A large capacity capacitance compensation control system, characterized by: the intelligent power factor meter comprises a main cabinet, an auxiliary cabinet, a controller K arranged in the main cabinet or the auxiliary cabinet, and a power factor meter COS connected with an external alternating current power supply, wherein the controller K is connected with the external alternating current power supply to acquire voltage signals and current signals of the external alternating current power supply, a main loop, a main control loop are arranged in the main cabinet, an auxiliary loop and an auxiliary control loop are arranged in the auxiliary cabinet, the main loop comprises a plurality of main primary branches, the auxiliary loop comprises a plurality of auxiliary primary branches, the main primary branch and the auxiliary primary branches comprise a fuse FU, a normally open contact of a contactor KM, a thermal relay FR, a reactor L and a compensation capacitor C which are sequentially connected in series, the main control loop comprises a plurality of main secondary branches, the auxiliary control loop comprises a plurality of auxiliary secondary branches, and the main secondary branches and the auxiliary secondary branches comprise a contactor KM coil, a contactor, Reactor temperature sensor DK, thermorelay FR's protection normally closed contact KH, the output of change over switch SA and controller K is connected respectively to the one end of contactor KM coil on the main secondary branch, and the output of change over switch SA1 and controller K is connected respectively to the one end of contactor KM coil on the auxiliary secondary branch.

2. The bulk capacitance compensation control system of claim 1, wherein: still be provided with many main signal return circuits in the main cabinet, still be provided with many auxiliary signal return circuits in the auxiliary cabinet, main signal return circuit and auxiliary signal return circuit all include the normally open contact, the pilot lamp HW of contactor KM that establish ties in proper order.

3. The bulk capacitance compensation control system according to claim 1 or 2, wherein: and a drop-open type fuse, a transformer and a lightning arrester are respectively connected in front of the main primary branch and the auxiliary primary branch.

4. The bulk capacitance compensation control system according to claim 1 or 2, wherein: and the number of the main primary branches and the number of the main secondary branches are 10.

5. The bulk capacitance compensation control system according to claim 1 or 2, wherein: and the auxiliary primary branches and the auxiliary secondary branches are 10.