CN212627148U - Comprehensive measurement and control protection device for electrical cabinet - Google Patents
Comprehensive measurement and control protection device for electrical cabinet Download PDFInfo
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- CN212627148U CN212627148U CN202021487830.9U CN202021487830U CN212627148U CN 212627148 U CN212627148 U CN 212627148U CN 202021487830 U CN202021487830 U CN 202021487830U CN 212627148 U CN212627148 U CN 212627148U
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- 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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- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/14—Protecting elements, switches, relays or circuit breakers
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Abstract
The utility model relates to a comprehensive measurement and control protection device for an electric cabinet, which belongs to the technical field of the comprehensive measurement and control protection device for the electric cabinet; the technical problem to be solved is as follows: the improvement of the hardware structure of the electrical cabinet comprehensive measurement and control protection device is provided; the technical scheme for solving the technical problem is as follows: the front side of the device shell is provided with a display screen and a control panel, and the back side of the device shell is provided with a signal acquisition wiring terminal, a control signal output wiring terminal and a data feedback wiring terminal; a control circuit board is arranged in the device shell, and a microcontroller is integrated on the control circuit board; the microcontroller connecting wire is connected with the alternating current signal acquisition module through a signal acquisition connecting terminal; the microcontroller connecting wire is connected with the tripping controller and the power supply module through a control signal output connecting terminal; the microcontroller connecting wire is connected with the relay control module and the data communication module through the data feedback connecting terminal; the utility model discloses the regulator cubicle is applied to in the installation.
Description
Technical Field
The utility model relates to a protection device is observed and controled in regulator cubicle synthesis belongs to regulator cubicle and synthesizes measurement and control protection device technical field.
Background
The electric control cabinet and the control box are widely applied to civil and industrial power supply places, real-time monitoring is carried out on the power supply quality of a power grid, whether current and voltage overload exists or not is judged, and corresponding operation is executed; with the development of the times, the types and specifications of loads accessed by an electric network are increasingly complex, comprehensive and accurate power utilization state detection is difficult to perform only by the control cabinet, and due to the limited power supply quality detection items, when the electric control cabinet encounters power supply hidden dangers, faults cannot be timely eliminated, the power supply quality is maintained or recovered, damage to each power utilization load is caused, and when the power utilization load is serious, the electric control cabinet is subjected to full-line tripping.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: the improvement of the hardware structure of the comprehensive measurement and control protection device of the electrical cabinet is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a comprehensive measurement and control protection device for an electrical cabinet comprises a device shell, wherein a display screen and a control panel are arranged on the front surface of the device shell, a status indicator lamp is arranged on one side of the display screen, and a signal acquisition wiring terminal, a control signal output wiring terminal and a data feedback wiring terminal are arranged on the back surface of the device shell;
a control circuit board is arranged in the device shell, and a microcontroller is integrated on the control circuit board;
the microcontroller connecting wire is connected with the alternating current signal acquisition module through a signal acquisition connecting terminal;
the microcontroller connecting wire is connected with the tripping controller and the power supply module through a control signal output connecting terminal;
the microcontroller connecting wire is connected with the relay control module and the data communication module through the data feedback connecting terminal; the data communication module is connected with the monitoring server through a communication bus;
the microcontroller is also connected with a display screen, a control panel, a status indicator lamp, an audible and visual alarm module and a data storage module through wires.
And a zero-sequence current sensor and a zero-sequence voltage sensor are arranged in the alternating current signal acquisition module.
And the tripping controller is internally provided with a tripping module, a reclosing module, a trip protection module and an acousto-optic alarm module.
And a signal opening/closing port and a corresponding circuit breaker are arranged in the relay control module.
The signal open-end port is specifically 8 ways, and 4 ways of the signal open-end port can be set as a non-electric quantity open-end port.
The utility model discloses beneficial effect for prior art possesses does: the utility model discloses there is the defect to current regulator cubicle measurement and control protection project, sets up one set of comprehensive protection measurement and control device in the electrical control cabinet in addition, sets up signal acquisition binding post, control signal output binding post and data feedback binding post respectively at the device wiring end, supports to carry out comprehensive monitoring to the regulator cubicle power consumption, is applicable to industrial and civilian 20KV and below voltage level circuit and station-service vary voltage protection and measurement and control, and operating personnel can switch over the circuit or self-defining protection mechanism according to actual need by oneself; the utility model discloses mainly to the regulator cubicle design, also can be used to ordinary cubical switchboard or looped netowrk cabinet, have complete current protection, voltage protection, switching value input, relay output to support the communication function of descending on the data, carry out unified receipt management to monitoring feedback data, effectively improve the observing and controlling effect to the regulator cubicle power consumption.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a rear view of FIG. 1;
fig. 3 is a schematic diagram of the circuit structure of the present invention;
FIG. 4 is a wiring diagram of the peripheral circuit of the present invention;
in the figure: the device comprises a device shell 1, a signal acquisition connecting terminal 2, a control signal output connecting terminal 3, a data feedback connecting terminal 4, a microcontroller 5, an alternating current signal acquisition module 11, a trip controller 12, a power module 13, a relay control module 14, a data communication module 15, a monitoring server 16, an audible and visual alarm module 17 and a data storage module 18.
Detailed Description
As shown in fig. 1 to 4, the utility model relates to a comprehensive measurement and control protection device for an electrical cabinet, which comprises a device shell (1), wherein a display screen and a control panel are arranged on the front side of the device shell (1), a status indicator lamp is arranged on one side of the display screen, and a signal acquisition terminal (2), a control signal output terminal (3) and a data feedback terminal (4) are arranged on the back side of the device shell (1);
a control circuit board is arranged in the device shell (1), and a microcontroller (5) is integrated on the control circuit board;
the microcontroller (5) connecting wire is connected with the alternating current signal acquisition module (11) through the signal acquisition connecting terminal (2);
the microcontroller (5) connecting wire is connected with the tripping controller (12) and the power module (13) through the control signal output connecting terminal (3);
the connecting wire of the microcontroller (5) is connected with the relay control module (14) and the data communication module (15) through the data feedback connecting terminal (4); the data communication module (15) is connected with the monitoring server (16) through a communication bus;
the microcontroller (5) is also connected with a display screen, a control panel, a status indicator lamp, an audible and visual alarm module (17) and a data storage module (18) through wires.
And a zero-sequence current sensor and a zero-sequence voltage sensor are arranged in the alternating current signal acquisition module (11).
And the tripping controller (12) is internally provided with a tripping module, a reclosing module, a protection tripping module and an acousto-optic alarm module.
And a signal opening/closing port and a corresponding circuit breaker are arranged in the relay control module (14).
The signal open-end port is specifically 8 ways, and 4 ways of the signal open-end port can be set as a non-electric quantity open-end port.
The utility model is packaged in a small-sized integrated aluminum alloy case, can be used as a device shell to install various components and control interfaces, has high integration level and is convenient to use and carry; a microcontroller used in the device adopts a 32-bit CPU and 16-bit AD conversion to realize 32-point sampling per cycle; the device mainly adopts a two-table method to measure data, provides basic measurement parameters such as current, voltage and the like, and also provides measurement of parameters such as active power, reactive power, power factor and the like, can display a primary value after the CT and PT transformation ratios are modified in setting, and can be used as a digital measuring instrument; the device power supply module is provided with a wide-range alternating current and direct current power supply, and the working range is AC or DC 85-265V; the display screen arranged on the front side of the device is a Chinese wide-temperature liquid crystal display screen, a data communication module arranged in the device is externally connected with an RS485 communication interface, and various communication protocols such as Nanyang 94, MODBUS and the like are supported, so that networking and information transmission are facilitated; the static power consumption of the whole machine is less than 5W.
The utility model discloses support functions such as protection, telemetering measurement, remote control of operation equipment, can provide perfect protection measurement and control function, compromise different areas, different demand user requirement, the maximize is accomplished to debug simply, convenient to use, is reduced and is maintained the work load, divide into line protection, house transformer protection two kinds according to the use occasion.
The protection device is provided with corresponding protection functions according to the requirements of the power distribution protection device, and is also provided with remote control switch-on and switch-off of a switch, switching-on and switch-off of a soft pressure plate with the protection functions, modification of a protection constant value and switching of a constant value area, and switching value state, constant value area number and accident alarm type data can be transmitted through the communication module; the device binding post supports and inserts 8 way switching values, and wherein 4 ways can set up to open into the use for the non-electric quantity, and passive contact input is provided with 4 way relay outputs in addition.
The utility model provides a protect function mainly has:
1) three-stage overcurrent protection: each section is provided with a soft pressing plate for switching on and off the protection function, each section of protection has a fixed value of action current and action time, each section of protection is independent, and each section of protection can be selectively locked for overcurrent.
2) Two-section zero-sequence overcurrent protection: each section is provided with a soft pressing plate for switching on and off the protection function, when the zero sequence current of each section is greater than the set current, the trip or alarm is delayed, and the protection of each section is independent.
3) Overload protection: namely when any one phase current is larger than the set current, tripping or alarming is carried out after time delay.
4) Protection of reclosure: when the reclosing function is put into operation and the switch meets the charging condition after closing for 15s, the reclosing charging is completed, the reclosing is ready, the reclosing can be carried out, and once the protection tripping or the switch tripping is stolen, the reclosing is started after the reclosing delay.
5) And (3) switching-on acceleration protection: when the device is switched on manually, remotely or repeatedly, if the device is switched on a fault line, when any phase current is detected to be greater than a set current threshold, the device trips after short time delay, monitors the time of a switching-on position, and is switched on and accelerated to automatically exit after 3 seconds of switching-on.
6) Charging protection: the device is applied to the bus-coupled protection, when the bus-coupled is switched on, the device monitors the switch-on position, any phase current in 3s with a trip position is larger than a set value, and the device trips in a delayed mode.
7) Inverse time limit overcurrent protection: the protection function selects to switch on or off through a control word, and the fixed value is set as an inverse time limit current threshold fixed value and an inverse time limit time constant.
8) Overvoltage protection: and when the detection voltage is larger than the set threshold value, tripping or alarming is carried out after time delay.
9) Under-voltage protection: when the voltage is less than the set value and the switch position is in the closed position, the trip or alarm is delayed.
10) Low-frequency protection: when the system frequency is less than the set value, the system is delayed to trip or alarm.
11) PT (potential transformer) disconnection: when the difference between the line voltages of any two phases is greater than 18V; if Umin is less than 0.1Un and I has current (>0.8In), the TV is judged to be disconnected when the above criteria are met, the device carries out delayed 10s alarm, and reports the state of TV disconnection alarm on a display screen.
12) Controlling back wire breakage: when the circuit breaker control circuit is normal, one of the open quantity states of TWJ and HWJ is 1, the other is 0, and when both are 1 or 0, the circuit breaker control circuit or the open quantity circuit is abnormal, and the state of 'control circuit disconnection' is reported on a display screen after 10S delay.
13) Non-electric quantity protection: the device can also provide a direct tripping interface for heavy gas, light gas, over-temperature tripping and temperature high warning according to requirements, the tripping is accessed into a corresponding sensor signal feedback and control loop, the delayed tripping or warning is selected through a control word, and a remote signaling signal is acquired at the same time.
The utility model discloses the front is provided with blue white liquid crystal display, and the control button includes six and dabs formula buttons, can show various data and incident according to the menu suggestion during the use, also can accomplish operations such as parameter modification, hardware test, still is provided with six pilot lamps on one side of configuration display screen, is used for indicating device running state, switch position, protection action condition, communication state etc.; during operation, a confirmation key is pressed to enter a main menu of the device, all viewing and setting functions of the device can be completed under the main menu, and 8 items in the main menu are respectively 'scale display', 'open detection', 'accident query', 'protection fixed value', 'pressure plate setting', 'parameter setting' and 'version information'.
About the utility model discloses what the concrete structure need explain, the utility model discloses a each part module connection relation each other is definite, realizable, except that the special explanation in the embodiment, its specific connection relation can bring corresponding technological effect to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model provides a model, the connection mode of parts, module, specific components and parts that appear all belong to the prior art such as the published patent that technical staff can acquire before the application day, published journal paper, or common general knowledge, need not to describe in detail for the technical scheme that the present case provided is clear, complete, realizable, and can be according to this technical means or obtain corresponding entity product.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a protection device is observed and controled in regulator cubicle synthesis, includes device casing (1), the front of device casing (1) is provided with display screen and control panel, one side of display screen is provided with status indicator lamp, its characterized in that: a signal acquisition wiring terminal (2), a control signal output wiring terminal (3) and a data feedback wiring terminal (4) are arranged on the back of the device shell (1);
a control circuit board is arranged in the device shell (1), and a microcontroller (5) is integrated on the control circuit board;
the microcontroller (5) connecting wire is connected with the alternating current signal acquisition module (11) through the signal acquisition connecting terminal (2);
the microcontroller (5) connecting wire is connected with the tripping controller (12) and the power module (13) through the control signal output connecting terminal (3);
the connecting wire of the microcontroller (5) is connected with the relay control module (14) and the data communication module (15) through the data feedback connecting terminal (4); the data communication module (15) is connected with the monitoring server (16) through a communication bus;
the microcontroller (5) is also connected with a display screen, a control panel, a status indicator lamp, an audible and visual alarm module (17) and a data storage module (18) through wires.
2. The electrical cabinet comprehensive measurement and control protection device according to claim 1, characterized in that: and a zero-sequence current sensor and a zero-sequence voltage sensor are arranged in the alternating current signal acquisition module (11).
3. The electrical cabinet comprehensive measurement and control protection device according to claim 1, characterized in that: and the tripping controller (12) is internally provided with a tripping module, a reclosing module, a protection tripping module and an acousto-optic alarm module.
4. The electrical cabinet comprehensive measurement and control protection device according to claim 1, characterized in that: and a signal opening/closing port and a corresponding circuit breaker are arranged in the relay control module (14).
5. The electrical cabinet comprehensive measurement and control protection device according to claim 4, characterized in that: the signal open-end port is specifically 8 ways, and 4 ways of the signal open-end port can be set as a non-electric quantity open-end port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021487830.9U CN212627148U (en) | 2020-07-24 | 2020-07-24 | Comprehensive measurement and control protection device for electrical cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021487830.9U CN212627148U (en) | 2020-07-24 | 2020-07-24 | Comprehensive measurement and control protection device for electrical cabinet |
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| CN212627148U true CN212627148U (en) | 2021-02-26 |
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| CN202021487830.9U Active CN212627148U (en) | 2020-07-24 | 2020-07-24 | Comprehensive measurement and control protection device for electrical cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595037A (en) * | 2021-08-06 | 2021-11-02 | 云南电网有限责任公司红河供电局 | Comprehensive protection method and system for transformer substation |
-
2020
- 2020-07-24 CN CN202021487830.9U patent/CN212627148U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595037A (en) * | 2021-08-06 | 2021-11-02 | 云南电网有限责任公司红河供电局 | Comprehensive protection method and system for transformer substation |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 12, Wangbo Road, Yuncheng Economic and Technological Development Zone, Yuncheng City, Shanxi Province 044000 Patentee after: Shanxi Zhongzhou Electric Co.,Ltd. Address before: 044000 West Xujiazhuang Road, Kangjie West Road, North District, Airport Development Zone, Yuncheng City, Shanxi Province Patentee before: SHANXI ZHONGZHOU ELECTRIC Co.,Ltd. |
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| CP03 | Change of name, title or address |