CN204129114U - Transformer electric energy meter - Google Patents
Transformer electric energy meter Download PDFInfo
- Publication number
- CN204129114U CN204129114U CN201420531255.6U CN201420531255U CN204129114U CN 204129114 U CN204129114 U CN 204129114U CN 201420531255 U CN201420531255 U CN 201420531255U CN 204129114 U CN204129114 U CN 204129114U
- Authority
- CN
- China
- Prior art keywords
- relay
- resistance
- main process
- process chip
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model relates to a kind of transformer electric energy meter and heat Balance Calculation alarm method thereof.The utility model can solve prior art transformer after temperature oversteps the extreme limit temperature well to be continued to use the problem that will finally cannot normally work or burn.Its drip irrigation device is, comprise current sampling circuit, voltage sampling circuit, three-phase electrical energy computation chip, main process chip, timer conter, LCD display circuit, storer, communication interface, ESAM interface, transformer electric energy meter ESAM module, output interface, power module, power management module and expansion interface, current sampling circuit detects the electric current of three-phase electricity, the test side of voltage sampling circuit is connected with three-phase electricity, current sampling circuit is all connected with the input end of three-phase electrical energy computation chip with the output terminal of voltage sampling circuit, the output terminal of three-phase electrical energy computation chip is electrically connected with main process chip, the input end of power module is connected with three-phase electricity.
Description
Technical field
The utility model belongs to electric energy meter, particularly a kind of transformer electric energy meter.
Background technology
Transformer is when continuous firing, own temperature constantly raises, temperature is too high, often work affecting work, after temperature oversteps the extreme limit temperature, transformer continuation use cannot normally work or burn, and therefore utilize prior art, how study a kind of temperature being extrapolated transformer work generation by measurement electric line copper loss, thermal equilibrium value, thus the temperature of control transformer of adopting an effective measure, the transformer electric energy meter that the situation avoiding transformer to burn ring occurs is imperative.
China Patent Publication No. CN202815085U, March 20 2013 day for announcing, disclose a kind of three-phase intelligent electric-energy meter, comprise control module, metering units, communication unit, man-machine interaction unit, infrared wakeup unit based on photodiode, ESAM safe unit, storage unit and output unit, described communication unit comprises RS485 communication module and infrared module, metering units, RS485 communication module, infrared module, man-machine interaction unit, infrared wakeup unit, ESAM safe unit, storage unit and output unit are electrically connected with control module respectively.The utility model adopts photodiode to build wake-up circuit, can make to wake electric energy meter up in low power consumpting state operation during system power failure, and ensured the serviceable life of battery, good reliability, security is high, reduces production cost simultaneously.But this technical scheme still exists transformer when continuous firing, and own temperature constantly raises, and temperature is too high, often work affecting work, after temperature oversteps the extreme limit temperature, transformer continues to use the problem that will finally cannot normally work or burn.
Utility model content
The purpose of this utility model is to solve in above-mentioned prior art exists transformer when continuous firing, own temperature constantly raises, temperature is too high, often work affecting work, after temperature oversteps the extreme limit temperature, transformer continues to use and will finally cause the problem that cannot normally work or burn, and provides a kind of utilization and measures copper loss (I
2) time integral value, thermal equilibrium (I
2-K) aggregate-value transformer electric energy meter.
The utility model solves the technical scheme that its technical matters adopts: a kind of transformer electric energy meter, be applicable to the transformer power test of three-phase electricity, comprise current sampling circuit, voltage sampling circuit, three-phase electrical energy computation chip, main process chip, timer conter, LCD display circuit, storer, communication interface, ESAM interface, transformer electric energy meter ESAM module, output interface, power module, power management module and expansion interface, described current sampling circuit detects the electric current of three-phase electricity, the test side of voltage sampling circuit is connected with three-phase electricity, described current sampling circuit is all connected with the input end of described three-phase electrical energy computation chip with the output terminal of voltage sampling circuit, the output terminal of described three-phase electrical energy computation chip is electrically connected with described main process chip, the input end of described power module is connected with three-phase electricity, the output terminal of power module is electrically connected with power management module, described power management module is also electrically connected with power down reserve battery, described power management module is that transformer electric energy meter is powered, described timer conter, LCD display circuit, storer, communication interface, output interface and expansion interface are all electrically connected with described main process chip, described transformer electric energy meter ESAM module is electrically connected with described main process chip by ESAM interface, described main process chip is STM32F100_VCT6 single-chip microcomputer, described three-phase electrical energy computation chip is ADE7858 chip, described output interface comprises the warning output interface circuit be connected with alarm and the on-load switch external interface circuit be connected with on-load switch, an input/output port of described main process chip is electrically connected with warning output interface circuit as alerting signal output pin, another input/output port of described main process chip is electrically connected with on-load switch external interface circuit as on-load switch control signal output pin, it is characterized in that: described warning output interface circuit comprises triode Q1, transient voltage suppression diode TVS1, electric capacity C36, electric capacity C37, electric capacity C38, voltage stabilizing diode D2, resistance R23, resistance R25, resistance R27 and relay K 1, the alerting signal output pin of described main process chip is by electric capacity C36 ground connection, the alerting signal output pin of described main process chip is connected with the base stage of triode Q1 by resistance R23, the alerting signal output pin of described main process chip is connected with the emitter of triode Q1 by resistance R25, the grounded emitter of described triode Q1, the collector of described triode Q1 is connected with the anode of voltage stabilizing diode D2, the negative electrode of described voltage stabilizing diode D2 is connected with the first end of resistance R27, second end of described resistance R27 is connected with the digital voltage output terminal of power management module, second end of described resistance R27 is by electric capacity C37 ground connection, the two ends of described voltage stabilizing diode D2 also with electric capacity C38, the coils from parallel connection of coils of transient voltage suppression diode TVS1 and relay K 1, the contact of described relay K 1 is single-pole double-throw (SPDT) contact, the contact of relay K 1 comprises relay K 1 moving contact, relay K 1 first stationary contact and relay K 1 second stationary contact, described relay K 1 first stationary contact is opening contact, described relay K 1 moving contact is connected with the common port of alarm, described relay K 1 second stationary contact is connected with the input end of described alarm.
As preferably, described on-load switch external interface circuit comprises triode Q2, transient voltage suppression diode TVS2, electric capacity C39, electric capacity C40, electric capacity C41, voltage stabilizing diode D3, resistance R24, resistance R26, resistance R28 and relay K 2, the on-load switch control signal output pin of described main process chip is by electric capacity C40 ground connection, the on-load switch control signal output pin of described main process chip is connected with the base stage of triode Q2 by resistance R24, the on-load switch control signal output pin of described main process chip is connected with the emitter of triode Q2 by resistance R26, the grounded emitter of described triode Q2, the collector of described triode Q2 is connected with the anode of voltage stabilizing diode D3, the negative electrode of described voltage stabilizing diode D3 is connected with the first end of resistance R28, second end of described resistance R28 is connected with the digital voltage output terminal of power management module, second end of described resistance R28 is by electric capacity C40 ground connection, the two ends of described voltage stabilizing diode D3 also with electric capacity C41, the coils from parallel connection of coils of transient voltage suppression diode TVS2 and relay K 2, the contact of described relay K 2 is single-pole double-throw (SPDT) contact, the contact of relay K 2 comprises relay K 2 moving contact, relay K 2 first stationary contact and relay K 2 second stationary contact, described relay K 2 first stationary contact is connected with the disconnection input end of on-load switch, described relay K 2 second stationary contact is connected with the closed input end of on-load switch, described relay K 2 moving contact is connected with the described common port meeting switch.
The significant substantial effect of the utility model is: electric current and voltage signal flow into through Wiring port and show to count, through sensor element, carried out sampling and calculate to three-phase instantaneous value by ADE7858, MCU is supplied to the form of umber of pulse or electric flux, realize the accumulative of electricity, calculate, total and each point phase voltage, electric current, power, instantaneous flow metering and the storages such as power factor, and to data analysis, obtain current electric grid ruuning situation, record grid event, load process, the functions such as display and data communication, by thermal equilibrium algorithm, electric energy meter can by gathering voltage, electric current calculates the loss of current transformer, due to transformer loss and heating direct proportionality, the real-time temperature rise situation of transformer can be calculated thus, again according to the self performance characterisitic parameter of transformer, can Real-Time Monitoring transformer operating mode, analyze to electric company, leading subscriber is orderly, safety utilization of electric power brings convenience.
Accompanying drawing explanation
Fig. 1 is a kind of circuit block diagram of the present utility model;
Fig. 2 is a kind of circuit diagram of output interface circuit of reporting to the police in the utility model;
Fig. 3 is a kind of circuit diagram of on-load switch external interface circuit in the utility model.
In figure: 1, current sampling circuit, 2, voltage sampling circuit, 3, three-phase electrical energy computation chip, 4, main process chip, 5, LCD display circuit, 6, storer, 7, communication interface, 8, ESAM interface, 9, output interface, 10, expansion interface, 11, power management module, 12, power module, 13, power down reserve battery, 14, timer conter.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1:
A kind of transformer electric energy meter is (see accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3), be applicable to the transformer power test of three-phase electricity, comprise current sampling circuit 1, voltage sampling circuit 2, three-phase electrical energy computation chip 3, main process chip 4, timer conter 14, LCD display circuit 5, storer 6, communication interface 7, ESAM interface 8, transformer electric energy meter ESAM module, output interface 9, power module 12, power management module 11 and expansion interface 10, described current sampling circuit detects the electric current of three-phase electricity, the test side of voltage sampling circuit is connected with three-phase electricity, described current sampling circuit is all connected with the input end of described three-phase electrical energy computation chip with the output terminal of voltage sampling circuit, the output terminal of described three-phase electrical energy computation chip is electrically connected with described main process chip, the input end of described power module is connected with three-phase electricity, the output terminal of power module is electrically connected with power management module, described power management module is also electrically connected with power down reserve battery 13, described power management module is that transformer electric energy meter is powered, described timer conter, LCD display circuit, storer, communication interface, output interface and expansion interface are all electrically connected with described main process chip, and described transformer electric energy meter ESAM module is electrically connected with described main process chip by ESAM interface.Described main process chip is STM32F100_VCT6 single-chip microcomputer, and described three-phase electrical energy computation chip is ADE7858 chip.Described output interface comprises the warning output interface circuit be connected with alarm and the on-load switch external interface circuit be connected with on-load switch, an input/output port of described main process chip is electrically connected with warning output interface circuit as alerting signal output pin, and another input/output port of described main process chip is electrically connected with on-load switch external interface circuit as on-load switch control signal output pin.Described warning output interface circuit comprises triode Q1, transient voltage suppression diode TVS1, electric capacity C36, electric capacity C37, electric capacity C38, voltage stabilizing diode D2, resistance R23, resistance R25, resistance R27 and relay K 1, the alerting signal output pin of described main process chip is by electric capacity C36 ground connection, the alerting signal output pin of described main process chip is connected with the base stage of triode Q1 by resistance R23, the alerting signal output pin of described main process chip is connected with the emitter of triode Q1 by resistance R25, the grounded emitter of described triode Q1, the collector of described triode Q1 is connected with the anode of voltage stabilizing diode D2, the negative electrode of described voltage stabilizing diode D2 is connected with the first end of resistance R27, second end of described resistance R27 is connected with the digital voltage output terminal of power management module, second end of described resistance R27 is by electric capacity C37 ground connection, the two ends of described voltage stabilizing diode D2 also with electric capacity C38, the coils from parallel connection of coils of transient voltage suppression diode TVS1 and relay K 1, the contact of described relay K 1 is single-pole double-throw (SPDT) contact, the contact of relay K 1 comprises relay K 1 moving contact, relay K 1 first stationary contact and relay K 1 second stationary contact, described relay K 1 first stationary contact is opening contact, described relay K 1 moving contact is connected with the common port of alarm, described relay K 1 second stationary contact is connected with the input end of described alarm.Described on-load switch external interface circuit comprises triode Q2, transient voltage suppression diode TVS2, electric capacity C39, electric capacity C40, electric capacity C41, voltage stabilizing diode D3, resistance R24, resistance R26, resistance R28 and relay K 2, the on-load switch control signal output pin of described main process chip is by electric capacity C40 ground connection, the on-load switch control signal output pin of described main process chip is connected with the base stage of triode Q2 by resistance R24, the on-load switch control signal output pin of described main process chip is connected with the emitter of triode Q2 by resistance R26, the grounded emitter of described triode Q2, the collector of described triode Q2 is connected with the anode of voltage stabilizing diode D3, the negative electrode of described voltage stabilizing diode D3 is connected with the first end of resistance R28, second end of described resistance R28 is connected with the digital voltage output terminal of power management module, second end of described resistance R28 is by electric capacity C40 ground connection, the two ends of described voltage stabilizing diode D3 also with electric capacity C41, the coils from parallel connection of coils of transient voltage suppression diode TVS2 and relay K 2, the contact of described relay K 2 is single-pole double-throw (SPDT) contact, the contact of relay K 2 comprises relay K 2 moving contact, relay K 2 first stationary contact and relay K 2 second stationary contact, described relay K 2 first stationary contact is connected with the disconnection input end of on-load switch, described relay K 2 second stationary contact is connected with the closed input end of on-load switch, described relay K 2 moving contact is connected with the described common port meeting switch.
Electric current and voltage signal flow into through Wiring port and show to count, through sensor element, carried out sampling and calculate to three-phase instantaneous value by ADE7858, MCU is supplied to the form of umber of pulse or electric flux, realize the accumulative of electricity, calculate, total and each point phase voltage, electric current, power, instantaneous flow metering and the storages such as power factor, and to data analysis, obtain current electric grid ruuning situation, record grid event, load process, the functions such as display and data communication, by thermal equilibrium algorithm, electric energy meter can by gathering voltage, electric current calculates the loss of current transformer, due to transformer loss and heating direct proportionality, the real-time temperature rise situation of transformer can be calculated thus, again according to the self performance characterisitic parameter of transformer, can Real-Time Monitoring transformer operating mode, analyze to electric company, leading subscriber is orderly, safety utilization of electric power brings convenience.
Above-described embodiment is one of the present utility model preferably scheme, not does any pro forma restriction to the utility model, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (2)
1. a transformer electric energy meter, be applicable to the transformer power test of three-phase electricity, comprise current sampling circuit, voltage sampling circuit, three-phase electrical energy computation chip, main process chip, timer conter, LCD display circuit, storer, communication interface, ESAM interface, transformer electric energy meter ESAM module, output interface, power module, power management module and expansion interface, described current sampling circuit detects the electric current of three-phase electricity, the test side of voltage sampling circuit is connected with three-phase electricity, described current sampling circuit is all connected with the input end of described three-phase electrical energy computation chip with the output terminal of voltage sampling circuit, the output terminal of described three-phase electrical energy computation chip is electrically connected with described main process chip, the input end of described power module is connected with three-phase electricity, the output terminal of power module is electrically connected with power management module, described power management module is also electrically connected with power down reserve battery, described power management module is that transformer electric energy meter is powered, described timer conter, LCD display circuit, storer, communication interface, output interface and expansion interface are all electrically connected with described main process chip, described transformer electric energy meter ESAM module is electrically connected with described main process chip by ESAM interface, described main process chip is STM32F100_VCT6 single-chip microcomputer, described three-phase electrical energy computation chip is ADE7858 chip, described output interface comprises the warning output interface circuit be connected with alarm and the on-load switch external interface circuit be connected with on-load switch, an input/output port of described main process chip is electrically connected with warning output interface circuit as alerting signal output pin, another input/output port of described main process chip is electrically connected with on-load switch external interface circuit as on-load switch control signal output pin, it is characterized in that: described warning output interface circuit comprises triode Q1, transient voltage suppression diode TVS1, electric capacity C36, electric capacity C37, electric capacity C38, voltage stabilizing diode D2, resistance R23, resistance R25, resistance R27 and relay K 1, the alerting signal output pin of described main process chip is by electric capacity C36 ground connection, the alerting signal output pin of described main process chip is connected with the base stage of triode Q1 by resistance R23, the alerting signal output pin of described main process chip is connected with the emitter of triode Q1 by resistance R25, the grounded emitter of described triode Q1, the collector of described triode Q1 is connected with the anode of voltage stabilizing diode D2, the negative electrode of described voltage stabilizing diode D2 is connected with the first end of resistance R27, second end of described resistance R27 is connected with the digital voltage output terminal of power management module, second end of described resistance R27 is by electric capacity C37 ground connection, the two ends of described voltage stabilizing diode D2 also with electric capacity C38, the coils from parallel connection of coils of transient voltage suppression diode TVS1 and relay K 1, the contact of described relay K 1 is single-pole double-throw (SPDT) contact, the contact of relay K 1 comprises relay K 1 moving contact, relay K 1 first stationary contact and relay K 1 second stationary contact, described relay K 1 first stationary contact is opening contact, described relay K 1 moving contact is connected with the common port of alarm, described relay K 1 second stationary contact is connected with the input end of described alarm.
2. transformer electric energy meter according to claim 1, it is characterized in that: described on-load switch external interface circuit comprises triode Q2, transient voltage suppression diode TVS2, electric capacity C39, electric capacity C40, electric capacity C41, voltage stabilizing diode D3, resistance R24, resistance R26, resistance R28 and relay K 2, the on-load switch control signal output pin of described main process chip is by electric capacity C40 ground connection, the on-load switch control signal output pin of described main process chip is connected with the base stage of triode Q2 by resistance R24, the on-load switch control signal output pin of described main process chip is connected with the emitter of triode Q2 by resistance R26, the grounded emitter of described triode Q2, the collector of described triode Q2 is connected with the anode of voltage stabilizing diode D3, the negative electrode of described voltage stabilizing diode D3 is connected with the first end of resistance R28, second end of described resistance R28 is connected with the digital voltage output terminal of power management module, second end of described resistance R28 is by electric capacity C40 ground connection, the two ends of described voltage stabilizing diode D3 also with electric capacity C41, the coils from parallel connection of coils of transient voltage suppression diode TVS2 and relay K 2, the contact of described relay K 2 is single-pole double-throw (SPDT) contact, the contact of relay K 2 comprises relay K 2 moving contact, relay K 2 first stationary contact and relay K 2 second stationary contact, described relay K 2 first stationary contact is connected with the disconnection input end of on-load switch, described relay K 2 second stationary contact is connected with the closed input end of on-load switch, described relay K 2 moving contact is connected with the described common port meeting switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531255.6U CN204129114U (en) | 2014-09-16 | 2014-09-16 | Transformer electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531255.6U CN204129114U (en) | 2014-09-16 | 2014-09-16 | Transformer electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204129114U true CN204129114U (en) | 2015-01-28 |
Family
ID=52385459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420531255.6U Active CN204129114U (en) | 2014-09-16 | 2014-09-16 | Transformer electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204129114U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477864A (en) * | 2016-07-21 | 2019-03-15 | 萨基姆通讯能源及电信联合股份公司 | Configurable ammeter |
| CN114512730A (en) * | 2022-02-22 | 2022-05-17 | 双登集团股份有限公司 | Lithium battery leakage detection and safety management battery system for communication base station |
-
2014
- 2014-09-16 CN CN201420531255.6U patent/CN204129114U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477864A (en) * | 2016-07-21 | 2019-03-15 | 萨基姆通讯能源及电信联合股份公司 | Configurable ammeter |
| CN109477864B (en) * | 2016-07-21 | 2021-04-20 | 萨基姆通讯能源及电信联合股份公司 | Configurable electricity meter |
| CN114512730A (en) * | 2022-02-22 | 2022-05-17 | 双登集团股份有限公司 | Lithium battery leakage detection and safety management battery system for communication base station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103064027A (en) | On-line monitoring and maintaining system for 750-volt wireless intelligent storage battery | |
| CN102664454B (en) | Non-floating charging type substation direct current power supply system based on iron lithium battery | |
| CN103453999A (en) | Transformer substation device temperature monitoring system based on self-energy-acquiring wireless temperature sensor | |
| CN103197578A (en) | Robot electric quantity monitoring system | |
| CN203422459U (en) | Weak-current machine room battery power operation state remote detection system | |
| CN204129114U (en) | Transformer electric energy meter | |
| CN104330619B (en) | Transformer electric energy meter and heat Balance Calculation alarm method thereof | |
| CN207281999U (en) | A kind of transmission line wire temperature monitoring Transmission system based on sensor information | |
| CN208569006U (en) | Industrial direct current 24V uninterruption power source | |
| CN204302468U (en) | Lithium battery on-line monitoring early warning system | |
| CN203455090U (en) | Temperature detection system for high-voltage bus | |
| CN203349964U (en) | Self-energy-obtaining wireless temperature sensing chip | |
| CN206379886U (en) | Power communication machine room intelligent power distribution system | |
| CN205484517U (en) | Grid voltage current monitoring system | |
| CN105116263A (en) | Intelligent power monitoring device | |
| CN204615451U (en) | A kind of management device for rechargeable batteries | |
| CN204290399U (en) | Based on the intelligent track-traffic high-voltage charging machine of touch-screen | |
| CN103235268A (en) | Device for detecting parameters of sodium-sulfur battery on line | |
| CN208971247U (en) | The long-range integrated monitoring device of DC power supply | |
| CN208571692U (en) | A kind of circuit reporting working power power fail warning automatically | |
| CN203535423U (en) | Electrical appliance controlling device | |
| CN208156078U (en) | A kind of anti-breaking electrical metering system | |
| CN104638758B (en) | Real-time detection and switching circuit for power supply of remote control intelligent gas meter concentrator | |
| CN204316330U (en) | A kind of Essential Safety direct current system | |
| CN204408003U (en) | Remote-control intelligent gas meter concentrator power supply detects and commutation circuit in real time |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 310024, Zhejiang, Hangzhou province Xihu District Zhuan Tong Street, Zhuan Tong Science and Technology Economic Zone No. 11 Patentee after: Hangzhou Xili intelligent Polytron Technologies Inc Address before: 310014 Zhejiang, Xihu District Tong Tong Street turn to science and technology economic block block No. 11 Patentee before: HANGZHOU XILI WATT-HOUR METER MANUFACTURE CO., LTD. |