CN114883930A - Reactive compensation complete cabinet with high power saving efficiency and implementation method thereof - Google Patents

Reactive compensation complete cabinet with high power saving efficiency and implementation method thereof Download PDF

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Publication number
CN114883930A
CN114883930A CN202210594233.3A CN202210594233A CN114883930A CN 114883930 A CN114883930 A CN 114883930A CN 202210594233 A CN202210594233 A CN 202210594233A CN 114883930 A CN114883930 A CN 114883930A
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CN
China
Prior art keywords
reactive compensation
module
integrated low
compensation
voltage
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Pending
Application number
CN202210594233.3A
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Chinese (zh)
Inventor
金辉
王鹏飞
赵航
徐素萍
谢中炜
王昶
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Zhejiang Yidian Technology Co ltd
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Zhejiang Yidian Technology Co ltd
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Application filed by Zhejiang Yidian Technology Co ltd filed Critical Zhejiang Yidian Technology Co ltd
Priority to CN202210594233.3A priority Critical patent/CN114883930A/en
Publication of CN114883930A publication Critical patent/CN114883930A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56—Cooling; Ventilation
    • H02B1/565—Cooling; Ventilation for cabinets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
    • H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
    • H02J3/1864—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein the stepless control of reactive power is obtained by at least one reactive element connected in series with a semiconductor switch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

The invention 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 processor communicated with the integrated low-voltage reactive power compensation modules, control circuit breakers controlled by the central processor and corresponding to the integrated low-voltage reactive power compensation modules one by one, and a distributed heat dissipation mechanism, wherein the central processor is connected with the integrated low-voltage reactive power compensation modules; 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 invention adopts a modular design concept and is combined with the integrated low-voltage reactive compensation module, thereby ensuring the normal operation of the whole reactive compensation device and improving the electricity-saving efficiency of the reactive compensation device.

Description

Reactive compensation complete cabinet with high power saving efficiency and implementation method thereof
Technical Field
The invention belongs to the technical field of reactive power compensation devices, and particularly relates to a reactive power compensation complete cabinet with high power saving efficiency and an implementation method thereof.
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.
Disclosure of Invention
The invention aims to provide a reactive compensation complete cabinet with high electricity-saving efficiency, which aims to solve the technical problems of the existing reactive compensation device.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
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 a distributed heat dissipation mechanism, 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.
The invention also provides a realization method of the reactive compensation complete cabinet with high electricity-saving efficiency, which is characterized by comprising the following steps:
(1) 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;
(2) 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;
(3) the central processing unit calculates matched inductance parameters according to the received operation parameters;
(4) comparing the calculated inductance parameter with the 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;
(5) and 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.
Further, the operation parameters in the step (2) include reactive compensation quantity, bus power factor, bus harmonic information and current inductance parameters.
Further, the step (5) of turning off the corresponding cooling fan adopts a delayed turning off manner.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention is based on the design of a complete cabinet, integrates and arranges integrated low-voltage reactive compensation modules, adopts a modular design concept, and avoids the problem that the interior of the cabinet is messy due to the multi-point distribution of components in the cabinet in the existing reactive compensation cabinet.
(2) The capacitor bank comprises three capacitors and is connected with the filter inductor in a triangular mode, harmonic current inrush can be reduced to a certain degree, various problems and faults caused by short circuit in the capacitors are prevented, the compensation effect is good, the connection is simple, the cost is low, overvoltage operation can be reduced to a certain degree, and inrush current input into the capacitor bank is reduced.
(3) The inductance parameters of each integrated low-voltage reactive compensation module are different, the reactive compensation device can cover various inductance parameters of the current mainstream reactive compensation device, and when the field operation condition of the power grid changes, the adaptive integrated low-voltage reactive compensation modules can be called in time according to the operation condition, 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.
(4) According to the invention, a distributed heat dissipation mechanism is adopted according to a modular design concept to execute the concept of who works to dissipate heat, so that the problem of poor heat dissipation pertinence caused by the fact that a unified heat dissipation mode is not suitable for the modular design is avoided, and the heat dissipation effect is better.
Drawings
Fig. 1 is a first structural schematic diagram of the present invention.
Fig. 2 is a first structural diagram of the present invention.
Fig. 3 is a schematic block diagram of the present invention.
Fig. 4 is a schematic block diagram of the integrated low-voltage reactive compensation module according to the present invention.
Fig. 5 is a schematic wiring diagram of the 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 that those skilled in the art will more clearly understand and appreciate the present invention, the following detailed description of the present invention is provided in conjunction with the examples. It should be understood that the following specific embodiments are only used 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-conducting 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 power compensation module, closing the corresponding cooling fan, calling the matched integrated low-voltage reactive power compensation module to work, closing the control circuit breaker matched with the matched integrated low-voltage reactive power compensation module, starting the corresponding cooling fan as a further preferred scheme, and closing the corresponding cooling fan in the step.
The above description is the preferred embodiment of the present invention. It should be noted that, the skilled in the art can make several modifications without departing from the design principle and technical scheme of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims (10)

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 a distributed heat dissipation mechanism; 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 complete reactive compensation cabinet set 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.
8. The method for realizing the reactive compensation complete cabinet with high electricity-saving efficiency according to any one of claims 1 to 7, characterized by comprising the following steps:
(1) 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;
(2) 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;
(3) the central processing unit calculates matched inductance parameters according to the received operation parameters;
(4) comparing the calculated inductance parameter with the 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;
(5) and 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.
9. The method for realizing the reactive power compensation complete cabinet with high electricity saving efficiency according to claim 8, wherein the operation parameters in the step (2) comprise reactive power compensation amount, bus power factor, bus harmonic information and current inductance parameters.
10. The method for realizing the reactive power compensation complete cabinet with high electricity saving efficiency according to claim 9, wherein the corresponding cooling fan is turned off in the step (5) in a delayed turn-off manner.
CN202210594233.3A 2022-05-27 2022-05-27 Reactive compensation complete cabinet with high power saving efficiency and implementation method thereof Pending CN114883930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210594233.3A CN114883930A (en) 2022-05-27 2022-05-27 Reactive compensation complete cabinet with high power saving efficiency and implementation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210594233.3A CN114883930A (en) 2022-05-27 2022-05-27 Reactive compensation complete cabinet with high power saving efficiency and implementation method thereof

Publications (1)

Publication Number Publication Date
CN114883930A true CN114883930A (en) 2022-08-09

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ID=82679408

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Application Number Title Priority Date Filing Date
CN202210594233.3A Pending CN114883930A (en) 2022-05-27 2022-05-27 Reactive compensation complete cabinet with high power saving efficiency and implementation method thereof

Country Status (1)

Country Link
CN (1) CN114883930A (en)

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