CN112490897A - Intelligent low-voltage distribution transformer comprehensive distribution box - Google Patents

Intelligent low-voltage distribution transformer comprehensive distribution box Download PDF

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Publication number
CN112490897A
CN112490897A CN202011452461.4A CN202011452461A CN112490897A CN 112490897 A CN112490897 A CN 112490897A CN 202011452461 A CN202011452461 A CN 202011452461A CN 112490897 A CN112490897 A CN 112490897A
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CN
China
Prior art keywords
intelligent
transformer
voltage
low
reactive compensation
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Pending
Application number
CN202011452461.4A
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Chinese (zh)
Inventor
余伙庆
陈益栓
沈顺德
卓少民
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Guangdong Zheng Cheng Electric Technology Co ltd
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Guangdong Zheng Cheng Electric Technology Co ltd
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Application filed by Guangdong Zheng Cheng Electric Technology Co ltd filed Critical Guangdong Zheng Cheng Electric Technology Co ltd
Priority to CN202011452461.4A priority Critical patent/CN112490897A/en
Publication of CN112490897A publication Critical patent/CN112490897A/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
    • H02B1/46—Boxes; 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
    • H02B1/24—Circuit arrangements for boards or switchyards
    • 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
    • H02B1/46—Boxes; Parts thereof or accessories therefor
    • H02B1/48—Mounting of devices therein
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
    • H02B5/02—Non-enclosed substations; Substations with enclosed and non-enclosed equipment mounted on pole, e.g. pole transformer substation
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00012—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using an auxiliary transmission line
    • 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
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
    • 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
    • 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
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/40—Display of information, e.g. of data or controls

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses an intelligent low-voltage distribution transformer comprehensive distribution box, which comprises a box body and a power supply and control circuit system, wherein the power supply and control circuit system is arranged in the box body; the power supply and control circuit system comprises a primary loop consisting of an intelligent circuit breaker and a reactive compensation control terminal and is used for supplying power to a load; the intelligent circuit breaker and the reactive compensation control terminal monitor the state of equipment and measure and control electrical protection, and the power supply and control circuit system also comprises a temperature concentrator for monitoring the environment and a network high-speed spherical camera for video monitoring and security monitoring; the intelligent, visual, automatic and interactive functions of state monitoring of equipment in the rack transformer, real-time monitoring of the environment, safety control of behaviors, efficient support of social services and the like can be achieved, safety is higher, reliability is better, and intelligent degree is higher.

Description

Intelligent low-voltage distribution transformer comprehensive distribution box
Technical Field
The invention relates to the field of power distribution, in particular to an intelligent low-voltage distribution transformer comprehensive distribution box.
Background
In recent years, power grid companies propose a reformation and development strategy for transforming to intelligent power grid operators, energy industry value chain integrators and energy ecosystem service providers, and orderly promote the application of power distribution network intelligent technologies, and require the acquisition of configuration including five functions of equipment state monitoring, electrical protection measurement and control, video monitoring, environment monitoring and security monitoring, so that the construction of a high-reliability intelligent power grid power supply demonstration area is promoted, and intelligent maintenance is realized.
The rack becomes low voltage distribution transformer and synthesizes block terminal is a great component in the distribution network, occupies great proportion in the distribution network. The existing low-voltage distribution transformer comprehensive distribution box only uploads metering data to a platform of a power grid company through a TTU, the power grid company basically keeps the state of equipment of the remote low-voltage distribution transformer comprehensive distribution box in a blind state, and the operation state of each component of the low-voltage distribution transformer comprehensive distribution box is unknown.
Disclosure of Invention
Based on the defects in the prior art mentioned in the background art, the invention provides the intelligent low-voltage distribution transformer comprehensive distribution box.
The invention overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:
an intelligent low-voltage distribution transformer comprehensive distribution box comprises a box body and a power supply and control circuit system, wherein the power supply and control circuit system is arranged in the box body; the power supply and control circuit system comprises a primary loop consisting of an intelligent circuit breaker and a reactive compensation control terminal and is used for supplying power to a load;
the intelligent circuit breaker and the reactive compensation control terminal monitor the equipment state and measure and control the electrical protection;
the power supply and control circuit system further comprises a temperature concentrator for monitoring the environment and a network high-speed spherical camera for video monitoring and security monitoring.
As a further scheme of the invention: the intelligent low-voltage distribution transformer comprehensive distribution box is arranged below a transformer of a transformer area, and a contact temperature sensor and an oil transformer temperature monitoring device are arranged in the transformer of the transformer area;
the contact temperature sensor and the oil temperature-variable monitoring device are communicated with the temperature concentrator through RS485 serial bus signals.
As a still further scheme of the invention: the intelligent low-voltage distribution transformer comprehensive distribution box further comprises an intelligent gateway installed on the box body, a TTU is arranged on the transformer of the distribution area, and the intelligent gateway collects signals of the intelligent circuit breaker, the reactive compensation control terminal, the temperature concentrator, the TTU and the network high-speed spherical camera and uploads the signals to the cloud platform.
As a still further scheme of the invention: the transformer in the transformer area is electrically connected with a high-voltage isolating switch through a drop-out fuse, and the high-voltage isolating switch is electrically connected with a high-voltage incoming line;
and a lightning arrester is connected between the drop-out fuse and the transformer of the transformer area, and a low-voltage outgoing line for connecting a user load is arranged below the box body.
As a still further scheme of the invention: the intelligent gateway is provided with an RS485 serial bus, an RJ45 Ethernet and a hard contact signal interface which are used for transmitting signals to the cloud platform, and the intelligent low-voltage distribution transformer integrated distribution box is in a Modbus communication protocol with the cloud platform framework through the intelligent gateway.
As a still further scheme of the invention: the box body is internally provided with four compartments which comprise an incoming line and metering chamber, an incoming line switch chamber, a reactive compensation chamber and an outgoing line switch chamber, wherein the incoming line and metering chamber is electrically connected with the transformer of the transformer area through outgoing lines at the low-voltage side;
the system comprises a low-voltage side outgoing line and an incoming line switch room, and is characterized in that a TTU, a metering mutual inductor, a measuring mutual inductor and an intelligent gateway are installed in the incoming line and the metering room, the TTU, the metering mutual inductor, the measuring mutual inductor and the intelligent gateway are connected with each other to form a first passage, and the first passage is electrically connected with the low-voltage side outgoing line and the incoming line switch room.
As a still further scheme of the invention: the indoor installation inlet wire isolator of inlet wire switch and inlet wire circuit breaker, inlet wire isolator with the inlet wire circuit breaker links to each other and forms the second route and the indoor first route of electric connection inlet wire and measurement.
As a still further scheme of the invention: a temperature concentrator, a secondary power switch, a compensation circuit breaker, a reactive compensation control terminal, a reactive compensation miniature circuit breaker, a reactive compensation composite switch and a compensation capacitor are arranged in the reactive compensation chamber;
the temperature concentrator, the secondary power switch, the compensation circuit breaker, the reactive compensation control terminal, the reactive compensation miniature circuit breaker, the reactive compensation combination switch and the compensation capacitor are connected with each other to form a third passage, and the third passage is electrically connected with the second passage.
As a still further scheme of the invention: the intelligent circuit breaker and the secondary power supply module are installed in the outgoing switch chamber, the intelligent circuit breaker and the secondary power supply module are connected with each other to form a fourth passage, one end of the fourth passage is electrically connected with the third passage, and the other end of the fourth passage is electrically connected with a low-voltage outgoing line.
After adopting the structure, compared with the prior art, the invention has the following advantages: the technical scheme can realize the functions of intellectualization, visualization, automation, interaction and the like of state monitoring, real-time environment monitoring, behavior safety control and efficient social service support of equipment in the rack transformer, and has the advantages of higher safety, better reliability and higher intelligent degree.
Drawings
Fig. 1 is a topological diagram of an intelligent low-voltage distribution transformer integrated distribution box according to an embodiment of the present application;
fig. 2 is a schematic front mounting view of an intelligent low-voltage distribution transformer integrated distribution box according to an embodiment of the present disclosure;
fig. 3 is a schematic side-mounting view of an intelligent low-voltage distribution transformer integrated distribution box according to an embodiment of the present disclosure;
fig. 4 is a functional schematic diagram of an intelligent gateway of an intelligent low-voltage distribution transformer integrated distribution box according to an embodiment of the present application;
fig. 5 is a schematic diagram of an intelligent power distribution function of an intelligent low-voltage distribution transformer integrated distribution box according to an embodiment of the present application;
fig. 6 is a functional schematic diagram of a reactive compensation control terminal of an intelligent low-voltage distribution transformer comprehensive distribution box according to an embodiment of the present application;
fig. 7 is a functional schematic diagram of a temperature concentrator of an intelligent low-voltage distribution transformer integrated distribution box according to an embodiment of the present application;
fig. 8 is a schematic diagram of a box body of an intelligent low-voltage distribution and transformation integrated distribution box according to an embodiment of the present application;
fig. 9 is a schematic front mounting view of a box body of an intelligent low-voltage distribution transformer integrated distribution box according to an embodiment of the present application;
fig. 10 is a schematic view of the back surface of the box body of the intelligent low-voltage distribution transformer integrated distribution box provided in the embodiment of the present application.
In the figure, 1-high voltage incoming line; 2-high voltage isolating switch; 3-drop-out fuse; 4-a lightning arrester; 5-transformer area; 51-contact temperature sensor; 52-oil to oil temperature monitoring device; 6, a box body; 61-inlet line and metering chamber; 62-an incoming line switch room; 63-reactive compensation chamber; 64-outlet switch chamber.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 10, in an embodiment of the present invention, an intelligent low-voltage distribution transformer integrated distribution box includes a box body 6, and further includes a power supply and control circuit system, where the power supply and control circuit system is disposed in the box body 6; the power supply and control circuit system comprises a primary loop consisting of an intelligent circuit breaker and a reactive compensation control terminal and is used for supplying power to a load;
the intelligent circuit breaker and the reactive compensation control terminal monitor the equipment state and measure and control the electrical protection;
the power supply and control circuit system also comprises a temperature concentrator for monitoring the environment and a network high-speed spherical camera for video monitoring and security monitoring;
in the specific scheme of the embodiment, a primary loop is formed by intelligent power distribution and intelligent reactive compensation of an intelligent circuit breaker to supply power to a load, and the intelligent power distribution and the intelligent reactive compensation comprise equipment state monitoring and electrical protection measurement and control functions; installing a temperature concentrator to realize environment monitoring; and a network high-speed dome camera is installed to realize video monitoring and security monitoring functions.
In one embodiment of the present invention, the intelligent low-voltage distribution and transformation integrated distribution box is installed below a transformer 5 of a transformer area, and a contact temperature sensor 51 and an oil-to-oil temperature monitoring device 52 are installed in the transformer 5 of the transformer area;
the contact temperature sensor 51 and the oil-to-oil temperature monitoring device 52 are communicated with the temperature concentrator through RS485 serial bus signals;
in the specific scheme of this embodiment, the intelligent low-voltage distribution and transformation integrated distribution box is installed below a transformer of a transformer area and used for distributing electric energy and performing reactive compensation, for example, the intelligent low-voltage distribution and transformation integrated distribution box monitors the whole transformer area, a contact temperature sensor 51 is installed on a contact on the low-voltage side of the transformer, the temperature of the contact on the low-voltage side of the transformer is monitored, and the temperature is transmitted to a temperature concentrator of the intelligent low-voltage distribution and transformation integrated distribution box through wireless transmission; the oil temperature, the oil pressure, the oil level and the like of the transformer are monitored by the oil-to-oil temperature monitoring device 52 and transmitted to the temperature concentrator of the intelligent low-voltage distribution transformer comprehensive distribution box through 485 communication.
In another embodiment of the invention, the intelligent low-voltage distribution transformer comprehensive distribution box further comprises an intelligent gateway installed on the box body 6, a distribution transformer monitoring terminal (TTU) is arranged on the transformer 5 of the distribution area, and the intelligent gateway collects signals of the intelligent circuit breaker, the reactive compensation control terminal, the temperature concentrator, the TTU and the network high-speed dome camera and uploads the signals to the cloud platform;
in the specific scheme of this embodiment, equipment such as intelligent gateway, temperature concentrator, intelligent distribution circuit breaker, network ball machine are increased, the communication function of TTU and reactive compensation control terminal is increased, satisfy the requirement of electric wire netting company to intelligent low pressure distribution transformer comprehensive distribution box.
In another embodiment of the present invention, the box 6 is provided with a low-voltage side outgoing line for electrically connecting the transformer 5, the transformer 5 is electrically connected to the high-voltage isolating switch 2 through the drop-out fuse 3, and the high-voltage isolating switch 2 is electrically connected to the high-voltage incoming line 1;
a lightning arrester 4 is connected between the drop-out fuse 3 and the transformer 5, and a low-voltage outgoing line for connecting a user load is arranged below the box body 6;
in the specific scheme of this embodiment, for example, a 10kV high voltage is connected to a high-voltage isolating switch 2 through an incoming line 1, and is led down to a drop-out fuse 3, and is connected with a lightning arrester 4 for protection, and is led to a 10/0.4kV transformer, and a low-voltage side outgoing line is connected to an intelligent low-voltage distribution transformer comprehensive distribution box for distributing electric energy and reactive compensation, and the outgoing line is a low-voltage line to supply power to a user load.
In another embodiment of the invention, the intelligent gateway is provided with an RS485 serial bus, an RJ45 ethernet and a hard contact signal interface for transmitting to the cloud platform, and the intelligent low-voltage distribution and transformation integrated distribution box is in a Modbus communication protocol with the cloud platform framework through the intelligent gateway;
in the concrete scheme of this embodiment, intelligent gateway is responsible for gathering the signal of intelligent distribution circuit breaker, reactive compensation control terminal, TTU, temperature concentrator, the high-speed ball-type camera of network, uploads to the cloud platform, and intelligent gateway has interfaces such as RS485, RJ45 ethernet, a plurality of hard contact signals, adopts Modbus communication protocol to 6 insides of intelligent low pressure distribution transformer comprehensive distribution box, uploads the thing networking platform to the cloud platform.
In yet another embodiment of the present invention, the box 6 has four compartments therein, including an incoming and metering chamber 61, an incoming switch chamber 62, a reactive compensation chamber 63, and an outgoing switch chamber 64, which are electrically connected to the platform transformer 5 through low-side outgoing lines;
the incoming line and metering chamber 61 is internally provided with a TTU, a metering mutual inductor, a measuring mutual inductor and an intelligent gateway, the TTU, the metering mutual inductor, the measuring mutual inductor and the intelligent gateway are mutually connected to form a first passage, and the first passage is electrically connected with the low-voltage side outgoing line and incoming line switch chamber 62;
in a specific embodiment of this embodiment, the four compartments are electrically connected in sequence, and respectively perform functions of measurement monitoring, power-on switch control, reactive power compensation, and power transmission switch control.
In another embodiment of the present invention, a service disconnecting switch and a service breaker are installed in the service switching chamber 62, and the service disconnecting switch and the service breaker are connected to form a second path and electrically connected to the first path in the service and metering chamber 61;
in the specific scheme of this embodiment, the incoming line disconnecting switch and the incoming line breaker cooperate to control and protect the on-off of the incoming line of the current and voltage led in from the incoming line and the metering chamber 61.
In yet another embodiment of the present invention, a temperature concentrator, a secondary power switch, a compensation breaker, a reactive compensation control terminal, a reactive compensation micro breaker, a reactive compensation compound switch, and a compensation capacitor are installed in the reactive compensation chamber 63;
the temperature concentrator, the secondary power switch, the compensation circuit breaker, the reactive compensation control terminal, the reactive compensation miniature circuit breaker, the reactive compensation compound switch and the compensation capacitor are connected with one another to form a third passage, and the third passage is electrically connected with the second passage;
in the specific scheme of this embodiment, a reactive compensation control terminal is installed, which can monitor active power, reactive power, power factor, etc., and can set and inquire capacitance configuration and settable switching strategies at the same time; and monitoring the on-off state and the alarm state of the compound switch.
In another embodiment of the present invention, an intelligent circuit breaker and a secondary power module are installed in the outlet switch chamber 64, the intelligent circuit breaker and the secondary power module are connected to each other to form a fourth path, one end of the fourth path is electrically connected to the third path, and the other end of the fourth path is electrically connected to the low-voltage outlet.
In summary, the intelligent low-voltage distribution transformer comprehensive distribution box is a primary loop formed by intelligent distribution and intelligent reactive compensation of an intelligent circuit breaker and used for supplying power to a load, and the intelligent distribution and intelligent reactive compensation comprise functions of equipment state monitoring and electrical protection measurement and control; installing a temperature concentrator to realize environment monitoring; installing a network high-speed dome camera to realize video monitoring and security monitoring functions; the intelligent low-voltage distribution transformer comprehensive distribution box distributes electric energy and performs reactive compensation, and meanwhile, relevant information of a contact temperature sensor and an oil transformer oil temperature monitoring device which are arranged on a transformer can be collected; collecting video signals of a network high-speed dome camera; the intelligent circuit breaker is adopted for intelligent power distribution, and the intelligent circuit breaker has the functions of collecting three-phase voltage, current, zero-sequence current, active power, reactive power, power factor and the like besides the function of completing power distribution; the on-off of the switch can be controlled by comparing preset threshold values, so that the protection and alarm functions are realized; collecting the on-off state of a switch; the reactive compensation control terminal can monitor active power, reactive power, power factors and the like, and can set and inquire capacitance configuration and settable switching strategies; monitoring the on-off state, the alarm state and the like of the compound switch;
the network high-speed spherical camera realizes the conditions in the range of the rack, the personnel activity conditions and the displacement signals of a pointer meter, a signal lamp and a switch on equipment, and realizes the active recording, pre-warning and warning of the environment of a power distribution room and the state of the equipment.
The temperature concentrator can monitor the temperature and humidity in the comprehensive distribution box, monitor the oil temperature, oil pressure, oil level and the like of the transformer and monitor the temperature of A, B, C, N phase contacts on the low-voltage side of the transformer. Wherein the temperature and the humidity in the comprehensive distribution box are not less than 2 points and are connected by wires; the temperature of a A, B, C, N phase contact on the low-voltage side of the transformer is transmitted to a temperature concentrator through wireless transmission due to the high voltage of the contact; the oil temperature monitoring device for the oil transformer is powered by an intelligent low-voltage distribution transformer comprehensive distribution box (6), is connected to a temperature concentrator through RS485, and monitors the oil temperature, the oil pressure, the oil level and the like of the transformer.
The technical scheme can realize the functions of intellectualization, visualization, automation, interaction and the like of state monitoring, real-time environment monitoring, behavior safety control and efficient social service support of equipment in the rack transformer, and has the advantages of higher safety, better reliability and higher intelligent degree.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. But all changes which come within the scope of the invention are intended to be embraced therein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Claims (9)

1. An intelligent low-voltage distribution transformer comprehensive distribution box comprises a box body (6) and is characterized by further comprising a power supply and control circuit system, wherein the power supply and control circuit system is arranged in the box body (6); the power supply and control circuit system comprises a primary loop consisting of an intelligent circuit breaker and a reactive compensation control terminal and is used for supplying power to a load;
the intelligent circuit breaker and the reactive compensation control terminal monitor the equipment state and measure and control the electrical protection;
the power supply and control circuit system further comprises a temperature concentrator for monitoring the environment and a network high-speed spherical camera for video monitoring and security monitoring.
2. The intelligent low-voltage distribution transformer comprehensive distribution box according to claim 1, wherein the intelligent low-voltage distribution transformer comprehensive distribution box is installed below a transformer area (5), and a contact temperature sensor (51) and an oil transformer temperature monitoring device (52) are installed in the transformer area (5);
the contact temperature sensor (51) and the oil temperature change monitoring device (52) are in signal communication with the temperature concentrator through an RS485 serial bus.
3. The intelligent low-voltage distribution transformer integrated distribution box according to claim 2, further comprising an intelligent gateway installed on the box body (6), wherein the transformer (5) of the distribution area is provided with a TTU, and the intelligent gateway collects signals of the intelligent circuit breaker, the reactive compensation control terminal, the temperature concentrator, the TTU and the network high-speed dome camera and uploads the signals to a cloud platform.
4. The intelligent low-voltage distribution transformer comprehensive distribution box according to claim 3, wherein a low-voltage side outlet wire for electrically connecting the transformer (5) in the transformer area is arranged on the box body (6), the transformer (5) in the transformer area is electrically connected with the high-voltage isolating switch (2) through the drop-out fuse (3), and the high-voltage isolating switch (2) is electrically connected with the high-voltage inlet wire (1);
a lightning arrester (4) is connected between the drop-out fuse (3) and the transformer (5), and a low-voltage outgoing line used for connecting a user load is arranged below the box body (6).
5. The intelligent low-voltage distribution transformer comprehensive distribution box according to claim 3, wherein an RS485 serial bus, an RJ45 Ethernet and a hard-contact signal interface for transmitting to a cloud platform are arranged on the intelligent gateway, and the intelligent low-voltage distribution transformer comprehensive distribution box is in a Modbus communication protocol with the cloud platform framework through the intelligent gateway.
6. The intelligent low-voltage distribution transformer comprehensive distribution box according to claim 4, wherein the box body (6) is internally provided with four compartments, including a wire inlet and metering chamber (61), a wire inlet switch chamber (62), a reactive compensation chamber (63) and a wire outlet switch chamber (64) which are electrically connected with a transformer (5) of a platform area through a low-voltage side wire outlet;
the TTU, the metering mutual inductor, the measuring mutual inductor and the intelligent gateway are arranged in the incoming line and metering room (61), the TTU, the metering mutual inductor, the measuring mutual inductor and the intelligent gateway are connected with one another to form a first passage, and the first passage is electrically connected with the low-voltage side outgoing line and the incoming line switch room (62).
7. The intelligent low-voltage distribution transformer comprehensive distribution box according to claim 6, wherein a line incoming disconnecting switch and a line incoming breaker are installed in the line incoming switch chamber (62), and the line incoming disconnecting switch and the line incoming breaker are connected to form a second path and are electrically connected with the line incoming and the first path in the metering chamber (61).
8. An intelligent low-voltage distribution and transformation integrated distribution box according to claim 7, characterized in that a temperature concentrator, a secondary power switch, a compensation circuit breaker, a reactive compensation control terminal, a reactive compensation miniature circuit breaker, a reactive compensation compound switch and a compensation capacitor are installed in the reactive compensation chamber (63);
the temperature concentrator, the secondary power switch, the compensation circuit breaker, the reactive compensation control terminal, the reactive compensation miniature circuit breaker, the reactive compensation combination switch and the compensation capacitor are connected with each other to form a third passage, and the third passage is electrically connected with the second passage.
9. The distribution box of claim 8, wherein the outlet switch chamber (64) is installed with an intelligent circuit breaker and a secondary power module, the intelligent circuit breaker and the secondary power module are connected to each other to form a fourth path, one end of the fourth path is electrically connected to the third path, and the other end of the fourth path is electrically connected to the low-voltage outlet.
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CN113394885A (en) * 2021-07-09 2021-09-14 宁波新胜中压电器有限公司 Novel intelligent low-voltage power distribution cabinet and control method thereof
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