CN217387941U

CN217387941U - Reactive compensation complete cabinet with high power saving efficiency

Info

Publication number: CN217387941U
Application number: CN202221303673.0U
Authority: CN
Inventors: 金辉; 王鹏飞; 赵航; 徐素萍; 谢中炜; 王昶
Original assignee: Zhejiang Yidian Technology Co ltd
Current assignee: Zhejiang Yidian Technology Co ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-09-06
Anticipated expiration: 2032-05-27

Abstract

The utility model belongs to the technical field of reactive power compensation devices, and provides a reactive power compensation complete cabinet with high power saving efficiency, which comprises a cabinet body, an instrument module positioned at the upper part of the cabinet body, a plurality of integrated low-voltage reactive power compensation modules longitudinally arranged along the cabinet body, a central processing unit communicated with the integrated low-voltage reactive power compensation modules, a control circuit breaker controlled by the central processing unit and in one-to-one correspondence with the integrated low-voltage reactive power compensation modules, and a distributed heat dissipation mechanism; and a partition plate is arranged between the adjacent integrated low-voltage reactive compensation modules, and the inductance parameters of each integrated low-voltage reactive compensation module are different. The utility model discloses a modular design theory combines together with integrated form low pressure reactive compensation module, has guaranteed whole reactive power compensator's normal operating, has improved reactive power compensator's economize on electricity efficiency.

Description

Reactive compensation complete cabinet with high power saving efficiency

Technical Field

The utility model belongs to the technical field of reactive power compensator, specific theory relates to a reactive power compensation complete sets cabinet that economize on electricity is efficient.

Background

Reactive compensation plays a role in improving the power factor of a power grid in an electric power supply system, and is mainly used for reducing the loss of a power supply transformer and a transmission line, improving the power supply efficiency and improving the power supply environment. The reactive compensation complete cabinet is a conventional reactive compensation device and is widely applied to scenes such as transformer substations, power plants, enterprises and the like, the structure of the reactive compensation complete cabinet mainly comprises a cabinet body, a power supply inlet wire module, an instrument module, a reactive compensation module and the like, and in practical application, the reactive compensation complete cabinet mainly has the following technical problems: (1) the inrush current input into the capacitor bank is large; (2) the components are distributed in multiple points, so that the interior of the cabinet is messy; (3) inductance parameters are fixed, and if the operation condition of a field power grid changes, the effect of the whole reactive power compensation device is poor or even the whole reactive power compensation device cannot be used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reactive compensation complete sets cabinet that economize on electricity is efficient to solve the technical problem that current reactive compensation device exists.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a reactive compensation complete cabinet with high electricity saving efficiency comprises a cabinet body, an instrument module, a plurality of integrated low-voltage reactive compensation modules, a central processing unit, control circuit breakers and distributed heat dissipation mechanisms, wherein the instrument module is positioned at the upper part of the cabinet body; and a partition plate is arranged between the adjacent integrated low-voltage reactive compensation modules, and the inductance parameters of each integrated low-voltage reactive compensation module are different.

Further, the integrated low-voltage reactive compensation module includes the casing, sets up reactive compensation controller on the casing, the signal sampling module who is connected with the generating line, with the fuse that signal sampling module connects, with the fling-cut switch that the fuse is connected, with the filter inductance that the fling-cut switch is connected, with the capacitor bank that filter inductance is connected, and with the communication module of central processing unit communication.

Furthermore, the capacitor bank comprises three capacitors, and is connected with the filter inductor in a triangular mode.

Further, the signal sampling module comprises a current transformer and a voltage transformer.

Furthermore, the reactive compensation controller comprises a control module and a signal monitoring module, and the signal monitoring module is communicated with the central processing unit through the communication module.

Furthermore, the distributed heat dissipation mechanism comprises a heat dissipation air channel arranged at the back of the cabinet body, heat dissipation air vents located at the bottom of the cabinet body and communicated with the heat dissipation air channel, and heat dissipation fans corresponding to the integrated low-voltage reactive compensation modules one to one and controlled by the central processing unit, wherein all the heat dissipation fans share one heat dissipation air channel.

Further, the partition plate is made of heat conducting materials.

Compared with the prior art, the utility model discloses possess following beneficial effect:

(1) the utility model discloses based on the complete set cabinet design, integrated form low pressure reactive compensation module is arranged in the integration, adopts the modular design theory, has avoided the interior components and parts multiple spot distribution of cabinet that current reactive compensation cabinet exists, leads to the in disorder problem in the cabinet.

(2) The utility model discloses well capacitor bank includes three condenser to adopt the triangle-shaped wiring with filter inductance, it not only can be less than the harmonic current to a certain extent and gushes into, prevents the various problem trouble that the inside short circuit of condenser causes, and the compensation is effectual moreover, the wiring is simple, with low costs, can reduce overvoltage operation to a certain extent, reduces the inrush current that drops into capacitor bank.

(3) The utility model discloses well every integrated form low pressure reactive compensation module's inductance parameter is all inequality, can cover the reactive power compensator of all kinds of inductance parameters of present mainstream, when the electric wire netting scene operation condition changes, can in time call the integrated form low pressure reactive compensation module of adaptation according to the operational aspect, has guaranteed whole reactive power compensator's normal operating from this, has improved reactive power compensator's economize on electricity efficiency.

(4) The utility model discloses according to the modular design theory, adopt distributed heat dissipation mechanism, the radiating theory of who works who is carried out has avoided the problem that the heat dissipation pertinence is poor that unified radiating mode inadaptation modular design leads to, and the radiating effect is more excellent.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a first schematic structural diagram of the present invention.

Fig. 3 is a schematic block diagram of the present invention.

Fig. 4 is the functional block diagram of the middle integrated low-voltage reactive compensation module of the present invention.

Fig. 5 is the wiring diagram of the middle capacitor bank and the filter inductor of the present invention.

Wherein, the part names corresponding to the marks in the drawings are as follows: 1-cabinet body, 2-instrument module, 3-integrated low-voltage reactive compensation module, 4-control circuit breaker, 5-central processor, 6-partition board, 7-radiating air duct, 8-radiating air hole, 9-radiating fan, 10-capacitor and 11-filter inductance.

Detailed Description

In order to make the present invention more clear to those skilled in the art, the present invention will be further described in detail with reference to the following embodiments. It should be understood that the following specific embodiments are only for explaining the present invention, and it is convenient to understand that the technical solutions provided by the present invention are not limited to the technical solutions provided by the following embodiments, and the technical solutions provided by the embodiments should not limit the protection scope of the present invention.

Examples

As shown in fig. 1 to 5, the present embodiment provides a reactive compensation complete cabinet with high power saving efficiency, which adopts a modular design concept, and uses a cabinet body as a main carrier, wherein an instrument module is arranged at the upper part of the cabinet body for displaying various items of working information (such as reactive compensation amount, bus power factor, bus harmonic information, and current inductance parameter) of equipment, and a power interface (not shown in the figure) and a communication interface (not shown in the figure) are integrally arranged on the cabinet body, and belong to the conventional structure, and are not described herein again; in the embodiment, a plurality of partition plates are arranged at intervals in the cabinet body, and the partition plates are preferably made of heat conduction materials so as to improve the heat dissipation effect in the cabinet; the device placing cavity is formed between the adjacent partition plates, the integrated low-voltage reactive compensation modules are arranged in the device placing cavity, inductance parameters of the integrated low-voltage reactive compensation modules are different and mutually independent and are mutually standby, and the inductance parameters can be selected from 4%, 5% and 6% … … N%.

In this embodiment, still be provided with central processing unit, central processing unit and all integrated form low pressure reactive compensation module realize the communication, and every integrated form low pressure reactive compensation module one-to-one is provided with the control circuit breaker, and the control circuit breaker is controlled by central processing unit. Through the arrangement, when the field operation condition of the power grid changes, the central processing unit can call the adaptive integrated low-voltage reactive compensation module in time, so that the normal operation of the whole reactive compensation device is ensured, and the electricity-saving efficiency of the reactive compensation device is improved.

In this embodiment, the integrated low-voltage reactive compensation module includes a housing, a reactive compensation controller disposed on the housing, a signal sampling module connected to the bus, a fuse connected to the signal sampling module, a switching switch connected to the fuse, a filter inductor connected to the switching switch, a capacitor bank connected to the filter inductor, and a communication module communicating with the central processing unit. The signal sampling module comprises a current transformer and a voltage transformer and is used for collecting current signals and voltage signals of a power supply bus.

In this embodiment, the reactive compensation controller includes a control module and a signal monitoring module, the signal monitoring module communicates with the central processing unit through the communication module, the signal monitoring module is used for monitoring the collected bus current and voltage signals, and the working parameters of the filter inductor, the capacitor bank, the fling-cut switch and the like, and feeding back the working parameters to the control module and the central processing unit, the control module performs control according to the relevant parameters, and the central processing unit performs data processing according to the received relevant working parameters.

In this embodiment, the capacitor bank includes three capacitors to adopt triangle-shaped wiring with filter inductance, through above-mentioned setting, have following advantage: the compensation effect is good, the wiring is simple, the cost is low, the overvoltage operation can be reduced to a certain extent, and the inrush current input into the capacitor bank is reduced.

Traditional heat radiation structure is not applicable to the modular design structure of reactive compensation complete set cabinet in this embodiment, and its heat dissipation pertinence is poor, consequently, this embodiment adopts the distributed heat dissipation mechanism that has stronger pertinence, and its concrete structure is as follows: the integrated low-voltage reactive compensation module heat dissipation device comprises a heat dissipation air channel arranged at the back of a cabinet body, heat dissipation air vents located at the bottom of the cabinet body and communicated with the heat dissipation air channel, and heat dissipation fans which correspond to each integrated low-voltage reactive compensation module one by one and are controlled by a central processing unit, wherein the heat dissipation fans share one heat dissipation air channel, and the heat dissipation fans are preferably miniature. Through the setting, the heat dissipation risk that the integrated form low pressure reactive compensation module of work corresponds just opens, and all the other are closed, reach from this who works who radiating heat dissipation purpose, and the heat dissipation pertinence is stronger, and the effect is more excellent.

The embodiment also provides a method for realizing the reactive compensation complete cabinet with high electricity-saving efficiency, which comprises the following steps:

step one, according to the original operation condition of the power grid, the central processing unit calls the matched integrated low-voltage reactive compensation modules to work, the corresponding control circuit breakers are closed, the control circuit breakers corresponding to other integrated low-voltage reactive compensation modules are opened, and meanwhile, the corresponding cooling fans are started.

Step two, the reactive compensation controller collects the operation parameters of the power grid during field operation and feeds the operation parameters back to the central processing unit; the operation parameters comprise reactive compensation quantity, bus power factor, bus harmonic information and current inductance parameters.

And step three, the central processing unit calculates the matched inductance parameter according to the received operation parameter.

Comparing the calculated inductance parameter with an inductance parameter of the current integrated low-voltage reactive compensation module to determine whether the calculated inductance parameter is matched with the inductance parameter of the current integrated low-voltage reactive compensation module; if yes, no action is carried out, and if not, the next step is executed;

and step five, disconnecting the control circuit breaker corresponding to the current integrated low-voltage reactive compensation module, closing the corresponding cooling fan, calling the matched integrated low-voltage reactive compensation module to work, closing the control circuit breaker matched with the matched integrated low-voltage reactive compensation module, and starting the corresponding cooling fan as a further preferred scheme, wherein the corresponding cooling fan is closed in the step by adopting a time delay closing mode.

The above is the preferred embodiment of the present invention. It should be noted that, those skilled in the art can make several modifications without departing from the design principle and technical solution of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. A reactive compensation complete cabinet with high electricity saving efficiency is characterized by comprising a cabinet body (1), an instrument module (2) positioned at the upper part of the cabinet body (1), a plurality of integrated low-voltage reactive compensation modules (3) longitudinally arranged along the cabinet body (1), a central processing unit (5) communicated with the integrated low-voltage reactive compensation modules (3), control circuit breakers (4) controlled by the central processing unit (5) and corresponding to the integrated low-voltage reactive compensation modules (3) one by one, and distributed heat dissipation mechanisms; wherein, set up baffle (6) between adjacent integrated form low pressure reactive compensation module (3), and the inductance parameter of every integrated form low pressure reactive compensation module (3) is different.

2. The reactive power compensation complete cabinet with high power saving efficiency according to claim 1, characterized in that: integrated form low pressure reactive compensation module (3) are in including the casing, set up reactive compensation controller on the casing, the signal sampling module who is connected with the generating line, with the fuse that signal sampling module is connected, with the fling-cut switch that the fuse is connected, with the filter inductance that the fling-cut switch is connected, with the capacitor bank that filter inductance is connected, and with the communication module of central processing unit communication.

3. The reactive power compensation complete cabinet with high power saving efficiency according to claim 2, characterized in that: the capacitor bank comprises three capacitors (10) and is connected with the filter inductor (11) in a triangular mode.

4. The reactive power compensation complete cabinet with high power saving efficiency according to claim 3, characterized in that: the signal sampling module comprises a current transformer and a voltage transformer.

5. The reactive power compensation complete cabinet with high power saving efficiency according to claim 4, characterized in that: the reactive compensation controller comprises a control module and a signal monitoring module, and the signal monitoring module is communicated with the central processing unit through the communication module.

6. The reactive power compensation complete cabinet with high power saving efficiency according to claim 5, characterized in that: the distributed heat dissipation mechanism comprises a heat dissipation air duct (7) arranged at the back of the cabinet body (1), heat dissipation air vents (8) communicated with the heat dissipation air duct (7) and the integrated low-voltage reactive compensation modules (3) and heat dissipation fans (9) controlled by the central processing unit (5), wherein the heat dissipation air ducts (7) are arranged at the bottom of the cabinet body (1) and are shared by all the heat dissipation fans (9).

7. The reactive power compensation complete cabinet with high power saving efficiency according to claim 6, characterized in that: the partition plate (6) is made of heat conducting materials.