CN212410692U - Distribution line loss acquisition module and system - Google Patents
Distribution line loss acquisition module and system Download PDFInfo
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- CN212410692U CN212410692U CN202020732134.3U CN202020732134U CN212410692U CN 212410692 U CN212410692 U CN 212410692U CN 202020732134 U CN202020732134 U CN 202020732134U CN 212410692 U CN212410692 U CN 212410692U
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Abstract
The utility model is suitable for the technical field of electric power, and provides a distribution line loss acquisition module, which comprises a microprocessor; the metering unit is communicated with the microprocessor, is provided with a voltage and current sampling signal input interface and a pulse output interface, and is used for measuring an active power value, reactive power, an active functional quantity and reactive energy, and measuring an active power effective value, a voltage and current effective value, a line frequency and zero-crossing interruption; the storage unit is communicated with the microprocessor and used for storing data; and the power supply unit is used for supplying power for the parts, the beneficial effects of the utility model are that: the line loss acquisition module is installed in the distribution automation terminal for the module that provides the required electric quantity information of line loss calculation can monitor electric energy data in real time and upload, need not to modify whole electric wire netting construction frame, can effectively promote line loss management level, reduces the line loss, impels whole electric wire netting economic operation.
Description
Technical Field
The utility model relates to an electric power tech field especially relates to a distribution line decreases collection module and system.
Background
Electric power is the center of energy industry development, and as a high-quality secondary energy source with convenient use, the electric power energy source is widely applied to various fields of national production.
The voltage class is 10kV or above, and the current and voltage data are obtained from high-voltage equipment by adopting current and voltage transformers and are led into the electric energy metering device consisting of the electric energy meter through a secondary line. However, in practical application, the problem of negative line loss still occurs, because the metering is a system, including a current transformer, a voltage transformer, a secondary circuit, an electric energy meter, a following electric energy collecting terminal and the like, most of the problems are not caused by separate devices, and are the problems of system coordination, because the electric energy metering is a comprehensive error.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a distribution line decreases collection module and system, aim at solving current electric energy metering device measurement inaccurate, have the problem of comprehensive error.
The embodiment of the utility model provides a realize like this, a distribution line decreases collection module, include:
a microprocessor;
the metering unit is communicated with the microprocessor, is provided with a voltage and current sampling signal input interface and a pulse output interface, and is used for measuring an active power value, reactive power, an active functional quantity and reactive energy, and measuring an active power effective value, a voltage and current effective value, a line frequency and zero-crossing interruption;
the storage unit is communicated with the microprocessor and used for storing data; and
and the power supply unit is used for supplying power to the components.
As a further aspect of the present invention: and a clock circuit is also arranged in the microprocessor and used for correlating time for the stored data.
As a further aspect of the present invention: the power supply unit includes:
a main power supply for providing a wide range of power supplies; and
and the clock standby power supply is used for supplying power to the clock circuit when the main power supply fails.
As a further aspect of the present invention: the power supply also comprises an output module, wherein the output module at least comprises a plurality of indicator lamps for indicating the running state, the power supply state, the active electric energy and the reactive electric energy.
Another object of the embodiment of the utility model is to provide a distribution line decreases collection system, including the FTU system, still include with the communication of FTU system the distribution line decreases collection module.
As a further aspect of the present invention: the FTU system is communicated with the distribution line loss acquisition module through a communication module.
As a further aspect of the present invention: and a lightning arrester is also arranged in the communication module.
Compared with the prior art, the beneficial effects of the utility model are that: the line loss acquisition module is installed in the distribution automation terminal for the module that provides the required electric quantity information of line loss calculation can monitor electric energy data in real time and upload, need not to modify whole electric wire netting construction frame, can effectively promote line loss management level, reduces the line loss, impels whole electric wire netting economic operation.
Drawings
Fig. 1 is a schematic structural diagram of a distribution line loss acquisition module.
Fig. 2 is a schematic structural diagram of a distribution line loss acquisition system.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description is provided for the specific embodiments of the present invention.
As shown in fig. 1, for the utility model provides a distribution line loss acquisition module's structure chart, including microprocessor, measurement unit, memory cell and power supply unit, measurement unit and microprocessor communication are equipped with voltage, current sampling signal input interface and pulse output interface on it for measure active power value, reactive power, active energy and reactive energy, and measure active power virtual value, voltage current virtual value, line frequency and zero cross interrupt; the storage unit is communicated with the microprocessor and used for storing data; and the power supply unit is used for supplying power to the components.
The metering unit is internally provided with a domestic HT7038 chip, so that the precision is high, the reliability is high, the HT7038 can measure active power, reactive power, active functional quantity and reactive energy, and can provide 3 paths of independent active power, effective values, voltage and current effective values, line frequency, zero-crossing interruption and the like, and a flexible electricity larceny prevention scheme can be realized; and the full-digital gain, phase and Offset correction is supported, and active and reactive electric energy pulses are output from the pins PF and QF respectively. The metering unit communicates with the microprocessor through the serial SPI. The microprocessor can read the operation parameters of the metering unit in real time through the SPI, and event recording is carried out when abnormality occurs.
Due to the fact that the line loss acquisition module has multiple functions and complex implementation, a large amount of data can be generated in the operation process, and the voltage, the current, the power factor and the parameters which are monitored in real time, the calibration parameters, the remote signaling data, the remote measuring data and the like are stored in the EEPROM; such as 12-month history electricity data, event log data, freezing data, etc., are stored in the FLASH chip. Because the line loss acquisition module monitors more data, the selected memory chip has to have large capacity, high reliability, long storage time and low power consumption. Preferably, a 24C512 low-power consumption serial memory chip can be adopted to communicate with the microprocessor by an I2C interface, the standby current and the working current of the chip are respectively 1 muA and 1mA, the storage capacity reaches 64kB bytes, the erasing and writing times are 10 ten thousand, and the data storage time exceeds 200 years.
As shown in fig. 1, as a preferred embodiment of the present invention, a clock circuit is further disposed in the microprocessor for associating time with the stored data.
As shown in fig. 1, as a preferred embodiment of the present invention, the power supply unit includes a main power supply and a clock backup power supply, the main power supply is used for providing a wide range of power supplies; the clock standby power supply is used for supplying power to the clock circuit when the main power supply fails.
Because accurate timing is required, the power supply of the line loss acquisition module is divided into two parts, wherein the main power supply is preferably an isolated switch power supply, so that the power supply of a wide range can be ensured, an external power supply and a microprocessor power supply can be electrically isolated, and the interference of the external power supply can be ensured not to damage the core part of the microprocessor, especially not to damage stored data; the other part is that a clock standby power supply is provided under the condition that a main power supply is invalid so as to meet the requirement of a line loss acquisition module clock circuit, the clock standby power supply does not need to be replaced in the service life cycle of the line loss acquisition module, and the correct working time of the internal clock circuit is maintained to be accumulated for not less than 5 years after power failure.
As shown in fig. 1, as a preferred embodiment of the present invention, the output module at least includes a plurality of indicator lights for indicating the operation state, the power state, the active power and the reactive power.
The indicator light should use a high-brightness, long-life LED as the indicator light. For example in one case of the present embodiment:
1) active electric energy pulse indicator lamp: red; and normally off, and twinkling when measuring active electric energy.
2) Reactive electric energy pulse indicator lamp: red; and normally off, and twinkling when measuring reactive power.
3) Working power supply indicator lamp: red; the working power supply is on when power is on and off when power is off.
4) Operating an indicator light: green; normally the flicker frequency is 1 Hz.
The active electric energy pulse indicating lamp is used for indicating the power consumption of a user, the pulse output is used for calibrating and metering, and the electric energy pulse output circuit and the multifunctional port output circuit can be realized by common I/O and optical coupling isolation.
As shown in fig. 2, an embodiment of the present invention further provides a distribution line loss acquisition system, which includes an FTU system, and further includes a distribution line loss acquisition module in communication with the FTU system; the FTU system is communicated with the distribution line loss acquisition module through a communication module; and a lightning arrester is also arranged in the communication module.
In the embodiment, RS232 or RS485 transmission is used as a communication module to add a lightning arrester on an RS485 bus interface. The adopted RS485 interface chip is an HM3085 chip and is isolated by an optical coupler and a single chip microcomputer system, so that the whole system is prevented from being damaged when the lightning strike happens, the microprocessor is connected with the RS485 interface chip HM3085 through an asynchronous serial communication interface UART and the optical coupler isolation, the FTU system issues command information by adopting a DL/T634.5101-2002 protocol, and the line loss acquisition module receives information matched with the address of the FTU system and packages response information and a check code thereof to be upwards transmitted to the FTU system.
When the power-on detection simulation port detects that the FTU system supplies power, the line loss acquisition is operated at full speed, the SPI is communicated with a metering chip HT7038, the running state content of the ammeter, such as real-time voltage, current value, power factor and the like, is read in real time, and judging whether the clock circuit is in the normal working range, if the clock circuit is abnormal, reading the information of the clock circuit, then the data are stored in the memory chip 24LC512 through I2C communication, when the line loss acquisition module receives command data of format DL/T634.5101-2002 issued by RS485/RS232 communication channel, the line loss acquisition module analyzes through the protocol, the data in the 24C512 are read through I2C communication, are uploaded through an RS485/RS232 communication channel after being packaged, and after the power supply of the FTU system disappears, and switching the power supply to a clock standby power supply, closing the internal high-speed clock, starting the low-speed clock, closing the peripheral function and entering a low-power-consumption working state.
The above-mentioned embodiment of the utility model provides a distribution line decreases collection module to based on this module provides a distribution line decreases collection system, the line decreases collection module and installs in distribution automation terminal, a module for providing the line loss and calculate required electric quantity information can monitor electric energy data in real time and send on, need not to modify whole electric wire netting construction frame, can effectively promote the line loss management level, reduce the line loss, impel whole electric wire netting economic operation.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a distribution line decreases collection module which characterized in that includes:
a microprocessor;
the metering unit is communicated with the microprocessor, is provided with a voltage and current sampling signal input interface and a pulse output interface, and is used for measuring an active power value, reactive power, an active functional quantity and reactive energy, and measuring an active power effective value, a voltage and current effective value, a line frequency and zero-crossing interruption;
the storage unit is communicated with the microprocessor and used for storing data; and
and the power supply unit is used for supplying power to the components.
2. The power distribution line loss acquisition module of claim 1, wherein the microprocessor further comprises a clock circuit for correlating time to the stored data.
3. The module of claim 2, wherein the power supply unit comprises:
a main power supply for providing a wide range of power supplies; and
and the clock standby power supply is used for supplying power to the clock circuit when the main power supply fails.
4. The distribution line loss collection module of claim 1, 2 or 3, further comprising an output module, wherein the output module comprises at least a plurality of indicator lights for indicating an operation status, a power status, active power, and reactive power.
5. A distribution line loss acquisition system comprising an FTU system, further comprising the distribution line loss acquisition module of any of claims 1-4 in communication with the FTU system.
6. The electrical distribution line loss acquisition system of claim 5, wherein the FTU system communicates with the electrical distribution line loss acquisition module via a communication module.
7. The electrical distribution line loss collection system of claim 6, wherein a lightning conductor is further disposed within the communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020732134.3U CN212410692U (en) | 2020-05-07 | 2020-05-07 | Distribution line loss acquisition module and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020732134.3U CN212410692U (en) | 2020-05-07 | 2020-05-07 | Distribution line loss acquisition module and system |
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| CN212410692U true CN212410692U (en) | 2021-01-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624398A (en) * | 2020-05-07 | 2020-09-04 | 航天亮丽电气有限责任公司 | Distribution line loss acquisition module and system |
| CN113364133A (en) * | 2021-06-30 | 2021-09-07 | 江苏保丽洁环境科技股份有限公司 | System for monitoring high-voltage power supply and oil fume purifier with system |
-
2020
- 2020-05-07 CN CN202020732134.3U patent/CN212410692U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624398A (en) * | 2020-05-07 | 2020-09-04 | 航天亮丽电气有限责任公司 | Distribution line loss acquisition module and system |
| CN113364133A (en) * | 2021-06-30 | 2021-09-07 | 江苏保丽洁环境科技股份有限公司 | System for monitoring high-voltage power supply and oil fume purifier with system |
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