KR200274023Y1 - Both transformer power load monitoring and watt meter reading remote control system - Google Patents

Abstract

The existing wireless remote metering system for the electricity usage includes short range or local wireless metering system, mobile communication metering system, power line metering system, etc. However, the short range wireless metering system is impossible to read the meter installed underground. Because of the premise of the visit to Kagaho Lake, the savings of meter reading personnel are not significant, and local wireless communication is also difficult due to high-rise buildings in large cities and communication networks to meter reading centers. It is expensive to join one mobile communication for the remote meter reading of one meter, and the power line metering system is cheap enough to check the power consumption. Since one voltage has a problem in communication with another section, Have been in the capacity of telemetry by mobile communication for many of the high-pressure suyongga is based commercialization inspection system using a short-range wireless meter reading system and power lines have developed a pilot project or research is whether the mass distribution is uncertain.

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.

In order to solve this problem, the present invention organically combines the advantages of mobile communication, short-range or regional wireless communication, and power line communication to perform remote meter reading of power consumption in parallel with remote measurement of transformer voltage, current, and temperature. In addition to remote meter reading, this allows scientific voltage management and transformer protection.

Power supply unit and mobile communication terminal which output DC power to column transformer 2 lanes, local or local wireless communication modem, PLC modem and one microcontroller with built-in voltage, current and temperature measuring device and original protocol. It is equipped with a base station for remote measurement management of voltage, current and temperature, and remote meter reading of power consumption, which is characterized by a communication device that can operate by interfacing with local wireless communication and PLC communication module. Remotely reads the current and temperature and remotely reads the power consumption of the consumer meter supplied from the transformer by PLC communication method. Adjacent column transformers are located near the local or regional wireless communication with the base station column transformer equipped with the mobile communication terminal. Remote management of the same transformer as base station column transformer by data communication Conduct remote meter reading on power usage suyongga

Description

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

The present invention not only remotely reads electricity usage but also organically configures the advantages of mobile communication, short-range or regional wireless communication, and power line communication by measuring the voltage and load of the transformer. Remote metering of many consumer meters powered by voltage and load management and their transformers allows for cost-effective, low-cost manpower savings, proactive blocking of complaints caused by misreading or unreading To manage it.

Conventional metering method has been the most primitive method to visit the customer of the meter reader to book the usage of the meter one by one, but there are many problems, the meter reading by telephone line, remote meter reading 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. Communication has also been a problem of low reliability and expensive device construction. 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 by reading only the advantages of mobile communication, short-range or regional wireless communication, and power line communication, the meter reads the power consumption in parallel by measuring the voltage and load of the transformer. To save energy and manage voltage and load management scientifically.

Power supply unit and mobile communication terminal which output DC power to the secondary line of columnar transformer, local or local wireless communication modem and one microcontroller with built-in voltage, current, temperature measuring device and unique protocol. In addition, by attaching a communication device that can operate by interfacing the PLC communication module, a base station for remote metering and power measurement of voltage and current is installed, and voltage, current, and temperature are measured for each time of the transformer. In addition, in order to read the power consumption of the consumer meter which is supplied with power from the transformer by calling the consumer's electricity meter for each phase by the power line communication method, an external wire and a separate communication line for PLC communication are not made. It is a device that connects PLC communication line to voltage measuring terminal of each phase. And during the reading by the configuration the watt-hour meter reading device, and from those pole transformer close to the base station pole transformer to perform the same function as the pole transformer to the base station the data communication by short-range or local radio communications.

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 a block diagram illustrating an internal structure 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 data format configuration diagram of a protocol applied to the present invention

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

<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 or regional wireless communication module 303,403,503: Power unit

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 by the accompanying drawings of the configuration of the present invention is as follows, when it is determined that the description of the related public function or specific configuration in the description of the present invention may unnecessarily obscure the subject matter of the present invention Omit.

The present invention is a power supply unit that outputs DC power to two phases of column transformers, mobile communication terminal and local or local wireless communication modem and one microcontroller with built-in voltage, current and temperature measuring device and proprietary protocol. A device capable of operating by interfacing wireless communication and PLC communication modules to install a base station for remote measurement management of voltage and current and remote metering of power consumption, and to remotely measure voltage, current, and temperature by time of transformer by date In addition, the power consumption of the consumer electricity meter received from the transformer is remotely read by the PLC communication method, and data communication is performed between the base station main transformer in which the mobile communication terminal is installed and the adjacent main transformers by local or local wireless communication. Remote management of the same transformer as base station column transformer and It is a configuration that enables remote meter reading on power consumption.

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) Alternatively, the sector controller 104 transmits / receives the power consumption of the customer by transmitting / receiving by the PLC communication method 204, but reads the external electric wire and a separate communication line for PLC communication in order to read the customer's power meter by calling each phase. It is a device that connects PLC communication line to voltage measurement terminal of each phase in the equipment without composing a transformer.It configures transformer load monitoring and electricity meter reading device and calls the customer's electricity meter by ID for each phase. It is possible to correct the phase imbalance, so that the sector controller 104 , With the current temperature measurement data and transmits a power usage meter reading information of suyongga 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 local area communication or the local 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 digitizes (306, 307, 308) analog values such as voltage, current, temperature, etc. of the transformer of its own so that the same information of the transformer of the sector controller 104 can be obtained. 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 local or local wireless communication module 401 and transmitted and received through the PLC communication module 402 and the consumer electricity meter which is supplied with 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.

Referring to the operation of the present invention is as follows.

7 is a flow chart showing the operation between the system and each device of the present invention as the meter reading operation program of the meter reading center is activated (701) to transfer the standard time received from the mobile operator to each device (703) operation of 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. The tasked sector controllers independently perform the voltage and current measurement of the transformer's secondary lanes, the transformer's temperature measurement, and the meter's power usage metering. a, 708-b), which is divided into emergency notifications or information (709-a, 709-b) from the lower group 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, the connection between the transformer and the transformer by a local or regional wireless communication method may be omitted if necessary, and the local or local wireless communication module 302 between the base station transformer and the neighboring transformer may serve as a relay to transmit and receive relays between the transformer and the transformer. However, if communication is not possible even after trying a predetermined number of times of communication due to a failure of the communication module of the intermediate transformer, it is determined to be a failure and notifies the meter reading center 101 and then skips the transformer and continues to transmit and receive 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 managed, and the meter is read and received by a PLC method and a meter of electricity supplied from the transformers. Performs remote measurement of voltage and current of multiple transformers and remote meter reading of power consumption of many customers who receive power from their transformers by subscribing to local and local wireless communication methods with transformers. In particular, by calling each customer's electricity meter by ID for each phase, the number and power consumption of each phase can be determined, so that imbalances can be corrected for each phase, and the cost is low, as well as the voltage, current, and temperature of the transformer. Will be stored in different time zones. As a result, scientific quality control is possible.

Since a remote meter reading center based on mobile communication for high-voltage consumers is already installed and operated, there is no need to build a separate system, and if the sum of load measurement 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 a power failure, voltage fault or overload.

Claims (1)

PLC communication method between the meter reading center of the utility company and the base station transformer between the mobile communication 201 and 202, the base station transformer and the neighboring transformer between the local or local wireless communication 203, and the electric power meter of the customer receiving power from the transformers. It is possible to remotely measure and manage the voltage, current, temperature, etc. of a plurality of transformers in real time by sending and receiving to the mobile communication of one line through the 204, and to remotely read the power consumption of a plurality of consumers receiving power from the transformers. Eating, Voltage current and temperature measuring devices 306, 307 and 308 embedded in the load monitoring of the base station transformer, the mobile communication terminal 301, the local or regional wireless communication modems 302, 309, and the communication modem In order to read the area controller 103 composed of a control device and a microcontroller 300 and wired / wireless integrated interface and a method of calling a power meter of a customer for each phase, an external wire and a separate communication line for PLC communication are not made. Transformer load monitoring and electricity meter reading device composed of a device that combines the voltage measuring terminal of each phase of the load monitoring as a PLC communication line, Integrated wired / wireless operation by interfacing between the voltage current and temperature measuring devices 406, 407, and 408 embedded in the load monitoring of the transformer around the base station and the local or regional wireless communication modems 401 and 402 and their communication modems. In order to read the controller 104 consisting of the control device and the microcontroller 400 and the method of calling the electricity meter of the customer for each phase, the voltage measurement for each phase of the load sensor without making a separate communication line for an external wire and PLC communication Transformer load monitoring and meter reading device composed of a device that uses a terminal as a PLC communication line is connected to the mobile communication 201, 202, short-range or regional wireless communication 203, power line communication (204) Remote management system that integrates load monitoring of transformer and meter reading of electricity meter