KR100416926B1 - Both transformer power load monitoring and watt meter reading remote control system - Google Patents

Abstract

Wireless remote metering system for the existing electricity usage includes short-range or wireless metering system, mobile communication metering system, power line metering system, etc. However, short-range wireless metering system is based on the premise of visiting Gagaho Lake. It is not very effective, and the meter reading system by mobile communication is too expensive to pressurize one mobile communication for remote meter reading of one meter, and the metering system using power line has enough capacity and quality to read power consumption. Although the PLC (Power Line Communication) modem price is low, there is a problem in communication with other voltage ranges. However, remote meter reading by mobile communication has been commercialized for high voltage users with high power usage. The meter reading system using the Whether the mass distribution is opaque and Ido majority of power companies to join households per transformer economy less if combined with mobile communication and power line communication falls.

In addition, due to the rapid growth of informational equipment, air-conditioning equipment, and home appliances due to the entry of the information society and the increase of income, the power demand is rapidly increasing, and therefore, the power demand prediction and voltage management of each transformer are difficult. There is a case that the power supply is not supplied or the transformer is burned out due to the overload, which greatly affects the improvement of the electric quality such as voltage management.

The present invention focuses on the fact that the electric pole and electric pole are erected to pass a high voltage power line and bounce off without any obstacles in a straight line, thereby maximizing the utility of short-range wireless communication. By constructing a communication network, the remote meter reading and the voltage, current, and temperature of the transformer were measured separately or inclusive, so that the voltage meter and the transformer protection could be scientifically operated with the remote meter at low cost.

Power supply unit, mobile communication terminal, short range wireless communication modem, PLC modem and one microcontroller with built-in voltage, current, temperature measuring device and proprietary protocol on the secondary transformer of columnar transformer. Mobile communication, short range wireless communication, Data communication with meter reading center by installing base station for remote measurement management of voltage, current and temperature and remote metering of power consumption, characterized by communication device that can operate by interfacing with PLC communication module. Remote measurement of voltage, current and temperature of each unit and remote reading of the power consumption of the consumer meter powered by the transformer by PLC communication method, and adjacent column transformers are located near the base station column transformer with the mobile communication terminal. The source of the same transformer as the base station column transformer Conduct remote meter reading for electricity consumption management and suyongga

Description

{Both transformer power load monitoring and watt meter reading remote control system}

The present invention not only remotely reads the amount of electricity used but also organically combines the voltage and load measurement of the transformer with the short range wireless communication of the mobile communication and the power line communication. And remote meter reading for many consumer meters powered by their transformers, allowing you to control scientific electricity quality at a low cost, while preemptively cutting complaints related to reduced meter reading, false or unread reading It is.

Conventional metering method has been the most primitive way to visit the customer of the meter reader to book the usage of the meter, but there are many problems, the meter reading by telephone line, short range wireless metering system, mobile meter reading system, power meter reading Various alternatives, including systems, have been tried.

The short range wireless metering system has no effect of reducing the manpower, while the metering system based on mobile communication has a high modem cost and royalties due to CDMA royalties, and the metering system using power line has a low PLC modem price but has a different voltage. The communication has a problem of low reliability and high device construction cost, and even if the mobile communication and the power line communication are combined, the number of households per transformer is low and the economic efficiency is low. For this reason, it is difficult to adopt short-range, mobile communication, and power line metering system exclusively. Therefore, for the high-voltage consumer who consumes a lot of power, the remote metering by mobile communication has been commercialized. to be.

In addition, due to the rapid increase in power demand due to the explosion of information equipment and air-conditioning equipment, it is difficult to forecast demand and voltage management of transmission and distribution lines and transformers, so that employees of power companies can carry out pocket tests to test constant voltage. The system is equipped with an alarm transmitter and a device for measuring voltage, current, and temperature of a pole transformer by short range wireless communication.

The present invention has been made to solve the above-mentioned problems, and the mobile communication and power line communication is organically combined into a low-power short-range wireless communication to maximize the utility and to read the power consumption in parallel to the load measurement of the transformer, the meter reading cost To save power and scientifically manage the load of electricity.

Power supply unit, mobile communication terminal, wireless communication modem, one microcontroller with built-in voltage, current, temperature measuring device, and proprietary protocol on the secondary line of column transformer, mobile communication, local or regional wireless communication, PLC communication A communication device that can operate by interfacing the module is installed to establish a remote meter reading of power consumption, and a base station for remote measurement and management of voltage and current, and data communication by meter communication center and mobile communication. It measures the current and temperature and reads the power consumption of the consumer meter which is supplied with power from the transformer by the power line communication method, and the base station transformer and adjacent column transformers perform data communication by short-range wireless communication. To do the same.

1 is an overall configuration diagram of the present invention

2 is a diagram illustrating a mutual communication scheme of the present invention.

3 is an internal block diagram of an area controller applied to the present invention

4 is an internal block diagram of a sector controller according to the present invention.

5 is an internal block diagram of a consumer modem applied to the present invention

6 is a configuration diagram of a data format of a protocol applied to the present invention.

7 is a flowchart showing the operation between the system and each device of the present invention.

<Explanation of symbols for the main parts of the drawings>

101: meter reading center 102: mobile communication network

103: area controller 104: sector controller

105: customer modem 201,202: mobile communication

203: Near field communication 204: PLC communication

300,400,500: microcontroller 301: mobile communication module

302,401: Near field or wireless communication module 303,403,503: Power part

304,404,504: memory 305,405,505: clock control

306,406: Voltage check 307,407: Current check

308,408: Temperature check 309,402,501: PLC communication module

502: check meter usage 506: check power failure

Detailed description of the configuration of the present invention by the accompanying drawings as follows, when the description of the known function or specific configuration related to the description of the present invention may unnecessarily obscure the subject matter of the detailed description Omit.

The present invention is a power supply unit, a mobile communication terminal, a short distance wireless communication modem and a microcontroller with a built-in voltage, current, temperature measuring device and a unique protocol for outputting DC power to the secondary lanes of the column transformer. By installing a base station for remote measurement management of voltage and current and remote metering of power consumption by installing a device that can operate by interfacing with PLC communication module, data communication is performed by meter communication center and mobile communication. And remotely measure the current and temperature of the electricity meter and the power consumption of the customer's electricity meter supplied from the transformer by the PLC communication method, and the short range wireless communication between the base station column transformer and adjacent column transformers in which the mobile communication terminal is installed. Transformer similar to base station column transformer It is a configuration to enable remote management of the meter and remote metering of the power consumption of the consumer electricity meter.

Referring to the system configuration of FIG. 1 and the communication method of FIG. 2, an area controller attached to a transformer by attaching a PLC (Power Line Communication) modem 105 to a wattmeter of consumers receiving power from the same transformer ( 103 or the sector controller 104 transmits and receives by the PLC communication 204 method to read the customer's power consumption, and the sector controller 104 reads the customer's power usage metering content together with the voltage, current, and temperature measurement data of the transformer. It transmits to the area controller 103. The area controller transmits and receives the stored voltage, current measurement data, and power consumption meter reading data through the mobile communication network 102 in accordance with the information request of the meter reading center 101.

3 is a configuration of the area controller 103 of the base station, the micro-controller 300 with the device operation program is built-in while receiving the DC power required for operation from the power supply unit 303 outputted from the transformer secondary line and rectified by DC power Information received from the center 101 is received through the mobile communication module 301 and transmitted to the sector controller 104 through the short range wireless communication module 302. The information at this time includes the update input 305 of the time that is incidentally transmitted in the mobile communication, and the same information as the transformer of the sector controller 104 by digitizing (306, 307, 308) analog values such as voltage, current, and temperature of the own transformer. The data is temporarily stored in the S-RAM memory 304, which is a data storage device, and an alarm is immediately notified to the meter reading center 101 when an abnormality occurs in voltage, current, temperature or the like.

4 is a configuration of the sector controller 104, the microcontroller 400 in which the device operation program is embedded receives the DC power required for operation from the power supply unit 403 outputted from the secondary line of the transformer and rectified by DC power. Information received from the 103 is received from the short-range wireless communication module 401 and transmitted and received through the PLC communication module 402 and the customer electricity meter received power from the transformer. The information at this time includes the update input 405 of the time transmitted through the area controller 103 in the mobile communication, and digitizes (406, 407, 408) analog values such as voltage, current, and temperature of its own transformer to the data storage device S. -Temporarily stores in the RAM memory 404 and transmits it according to the information request of the area controller 103, and when an abnormality occurs in voltage, current, temperature, etc., the alarm is notified to the meter reading center 101 via the area controller 103 immediately. do.

5 is a configuration of the customer modem 105, the microcontroller 500 in which the device operation program is built-in, while receiving the DC power required for operation from the power supply unit 503, the information sent from the sector controller 104 and the customer power meter Information 502 is transmitted and received through the PLC communication module 501 when requested by the sector controller 104. At this time, if the power failure is detected 506, the backup power (charger) is connected from the power supply unit 503 to store the current information in the EEPROM memory 504 in comparison with the power failure, and then enters the power saving mode and the power is supplied again the information in the memory After updating the device to return to normal status.

6 is a format of data constituting a protocol required for the devices to communicate with each other, a point 601 managed by a power supply company, an area controller 602 managed by one point, and a sector managed by one area controller. Serial number and time correction of the controller 603, the customer 604 managed by one sector controller, normal classification, specific meter reading, transformer status identification such as transformer status (605), step by step from the upper to lower or lower A total of 24 bytes of a code 606 for discriminating whether a step is received at a higher level, actual data 607, and an error check 608 for checking the accuracy of communication data are determined.

In addition, the microcontrollers 300, 400, and 500 are provided with a universal asynchronous receiver / transmitter (UART) as a serial communication processing device and are interfaced with respective modems.

The operation of the present invention will be described as follows.

7 is a flowchart illustrating the operation between the system and each device according to the present invention. As the meter reading operation program of the meter reading center is started 701, the standard time received from the mobile communication provider is transferred to each device (703) to operate the entire system. After controlling the time, the system enters normal operation while checking whether there is various emergency information (704). If an instruction including a business code is instructed to the selected area controller (705), the area controller receiving the request relays (706) sequentially or to the sector controllers. Each sector controller, independently assigned to the task, reads the voltage and current of the transformer second line, the temperature of the transformer and the power consumption of the customer in sequence by using the ID of the customer's electricity meter in order of ABC phase. Command or request (708-a, 708-b) coming from the subgroup to the subgroup is divided into emergency notifications or information (709-a, 709-b) coming from the subgroup to the upper group. The area controller or sector controller checks its transformer status while the task is in progress, and when an abnormality occurs (710-a, 710-b), interrupts (711-a, 711-b) to the upper group to pause the work that the upper group did. Stop and allow processing 704 in accordance with the emergency notification. If an abnormality occurs in the power meter that the customer modem also manages (710-c), the interrupt controller 712 is sent to the sector controller to continuously transfer to the upper group, so that the situation of all the customers managed by the meter office can be managed in real time. To help.

In addition, if necessary, the connection between the transformer and the transformer by a short range wireless communication method may be omitted, and the short range wireless communication module 302 between the base station transformer and the neighboring transformer serves as a relay and transmits and receives a relay between the transformer and the intermediate transformer. If communication is not possible even after trying a predetermined number of times of communication due to a failure of the communication module, it is determined that the failure is notified to the meter reading center 101 and then skips the transformer and continues transmitting and receiving with the next transformer.

As a base station transformer equipped with a mobile communication modem as a base station, the voltage, current, and temperature of the pole transformers are measured and monitored, and the meter is remotely read and received through a PLC method and a power meter of a customer receiving power from their transformers. Telemetering service of the voltage and current of a large number of transformers and the power consumption of many consumers who receive power from their transformers by subscribing to the mobile communication of one line by transmitting and receiving by the wireless communication method without the need of a transformer In addition, it is not only inexpensive, but also saves the voltage, current, and temperature of the transformer by date and time, that is, the black box of the transformer is made, which enables scientific electrical quality control.

Since the remote meter reading center is installed and operated by mobile communication for high-voltage customers, there is no need to build a separate system, and if the sum of loads measured by transformer and power consumption of customers are compared by season and time zone, It is possible to accurately measure the loss ratio, prevent the burnout of transformers, the source of the color of the conduction, and the demand forecasting of the voltage and load management and power transmission line.

It also provides a means to revolutionize equipment protection or customer care by alerting meter reading centers in the event of power failure, voltage abnormality or overload.

Claims (3)

In the telemetering management of the voltage and current of electric power and the remote metering system of electric power usage, the columnar transformers in the management of the metering center 101 are divided into a range of areas and outputted as DC power to the second lane of the columnar transformer as a reference. Power supply unit 303, microcontroller 300 with built-in protocol, mobile communication terminal 301, short range wireless communication modem 302, PLC modem 309, voltage current and temperature measuring device 306 (307) ( 308, the area controller 103 is configured as a base station, and the peripheral transformer includes a near field communication modem 401, a PLC modem 402, a voltage current and temperature measuring device 406, 407, and 408. And the mobile communication 201 and 202 between the meter reading center 101 and the area controller 103 of the base station transformer, and the near field wireless communication with the area controller 103 of the base station transformer and the sector controller 104 of the peripheral transformer. Communication 203, air of transformers Between the rear controller 103, the sector controller 104, and the consumer's electricity meter powered by the transformers, the PLC controller 105 transmits and receives through the PLC modem 105 and receives only one mobile line subscription. The load monitoring of the transformer, characterized in that by connecting the transformer of the low-power short-range wireless communication and real-time remote measurement of voltage, current, temperature, and the like, and the power consumption of a plurality of consumers receiving power from the transformers Remote management system that integrates meter reading The integrated load monitoring of the transformer and meter reading of the electricity meter according to claim 1, wherein one microcontroller having a unique protocol is operated by integrating a wired / wireless integrated interface between mobile communication, short-range wireless communication, and PLC communication module. Remote management system The short-range or local wireless communication module between the base station transformer and the neighboring transformer serves as a repeater and relays the transmission and reception between the transformers and the transformers. If it is impossible, the remote management system that integrates load monitoring of the transformer and meter reading of the electricity meter, which is determined to be a failure and notifies the meter reading center, skips the transformer, and continues transmitting and receiving with the next transformer.