KR100848143B1 - Transfering apparatus for electric power information - Google Patents

Abstract

An apparatus for transmitting electric power information is provided to support effective operation of a power generating station by transmitting exact electric power information to servers of other power generating stations as well as an NEMS(New Energy Management System) and an MOS/CBP(Market Operating System/Cost Based Pool) of a power exchange. An apparatus for transmitting electric power information includes a power generating station(100) and a power exchange(200). The power generating station generates and supplies power. The power exchange performs energy management and operation of a power market according to the electric power information generated from the power generating station. The power generating station includes a generator(110), a lead transformer(114), a watt-hour meter(120), and an EMS RTU(Energy Management System Remote Terminal Unit)(160). The power exchange includes an NEMS(210) and an MOS/CBP(220).

Description

Transferring apparatus for electric power information

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transmitting power amount information, and more particularly, to an apparatus for transmitting information on an actual amount of generated electricity at a power plant to a MOS / CBP of an electricity exchange.

In general, for electric power produced in large-scale power generation facilities such as hydropower, thermal power, and nuclear power plants or small individual power generation facilities such as solar cells, geothermal power, wave power, tidal power, fuel cells, etc. The center is made. The functions of the power exchange are roughly divided into "power supply automation" corresponding to power demand and "power market operation" that performs charging and settlement based on the amount of generated power.

In order to implement the power supply automation, the NEMS installed in the power exchange and the RTU installed in the power plant site are installed to communicate with each other. The NEMS means a new EMS (New EMS), and a power supply automation system using a claim value based on an EMS, that is, an Energy Management System. In addition, the RTU refers to an EMS RTU which is a power supply automation unit in a site of a power plant, that is, a Remote Termianl Unit (a remote station device or a remote terminal or a remote terminal device, hereinafter referred to as RTU or EMS RTU).

The NEMS and the RTU transmit various output-related information (voltage, current, electrical device status, etc.) of the generator at the plant site to the NEMS by the remote communication between the NEMS and the power generation amount control and power according to the power consumption in the NEMS. Sends a query for system control information to the RTU.

On the other hand, for the "power market operation", the amount of power produced at each power plant must be accurately measured by the electricity meter installed in the power plant, and transmitted by telecommunication to the MOS / CBP which is the power market operation facility of the power exchange.

In addition, the amount of power generated by the power plant should be acquired and utilized in real time in each power generation server other than NEMS and MOS. By the acquisition and utilization, it is possible to provide various statistical data and historical data to support the efficient operation of the power plant itself.

2 is a block diagram of a power amount information transmission apparatus according to the prior art.

In the prior art, as shown in FIG. 2, information for "automatic power supply" and information for "power market operation" were transmitted from the power plant 100 to the power exchange 200 through separate routes. .

First, the current amount and the voltage amount, which are output-related information of the generator 110 as information for power supply automation, are supplied to the sensor 118 at the power line 112 (primary side) between the generators G and 110 and the draw-out transformer 114. Withdraw). The extracted information is inputted to an analog input (AI) terminal 133 of the FPD (Feild Processing Device; field control unit) 130 constituting the EMS RTU (Remote Terminal Unit) 160, the CPU 132 of the Control is transmitted to the Optical Transceiver Unit (OXU) 138. The information is passed from the OXU 138 to the OXU 158 of the MPD 150 via the dual optical Ethernet ring 140. The OXU 158 transmits the information to the SIO-B terminal 154 through the control of the MPU-A 151 and the MPU-B 152 through the SIO-A 156 which is a serial terminal. . The information is transmitted directly from the SIP-B terminal 154 to the NEMS host device 212 of the NEMS 210 of the power exchange 200 or via the NEMS communication server 214. Is sent to.

On the other hand, the amount of power information as information for operating the power market is drawn by the sensor 119 from the power transmission line 116 (secondary side) after the drawing transformer 114 is detected by the electricity meter 120. The power amount information is directly transmitted to the MOS / CBP main unit 222 of the MOS / CBP 220 of the power exchange 200 through a route separate from the route through the EMS RTU 160, or MOS / It is transmitted to the MOS / CBP main unit 222 via the CBP communication server 224.

In the configuration of the prior art as described above, in order to perform each of the functions for "power automation" and "power market operation", a separate communication line must be secured and managed. Therefore, not only physical installation and maintenance of communication lines, but also a cost for maintaining their communication systems are required separately, and there is a problem in that line costs increase.

In addition, the measurement point of the current amount and the voltage amount of the generator 110, which is information for the power supply automation, is compared to the power line 112 between the generator 110 and the draw-out transformer 114, the "power market operation" Since the measurement point of the amount of power, which is information for the information, is the transmission line 116 after the drawing transformer 114, since the measurement points of the related information are different from each other, the amount of power grasped from the amount of current and voltage measured by the RTU 160 is determined. There is a problem that a difference occurs between the amount of power measured by the electricity meter 120, and there is a problem of settlement in settlement and billing.

In addition, the two systems of the power exchange 200, NEMS 210 and MOS / CBP 220, respectively use the amount of power or the related information as inputs, but the same structure is not utilized in the conventional structure. There was a problem that the situation.

In addition, the power amount information on the site of the power plant 100 needs to be acquired and utilized in real time from a server of each power plant 100 in addition to the NEMS 210 and the MOS / CBP 220. In the related art, the power meter 120 The exact amount of power information acquired by) does not have a route that can be transmitted to another power plant 100, and is immediately transmitted to the MOS / CBP 220 of the power exchange 200, so that various statistics or historical data are provided. There was a problem that can not be utilized, it is not possible to support the efficient operation of each power plant (100).

In addition, in the conventional EMS RTU 160, the method of accommodating the electricity meter 120 is limited or not provided at all, so that the method shown in FIG. Therefore, it was expected to provide a power amount information transmission apparatus, in which the power amount information may be provided to the power exchange 200 by being integrated into a single line via the EMS RTU 160 together with the voltage and current amount information.

The present invention, to solve the problems of the prior art as described above, by using a communication line for performing the function for "automatic power supply automation" and "power market operation" to a single line via the EMS RTU By integrating, securing and managing, not only the physical installation and maintenance of communication lines that provide information to the power exchange, but also the cost of maintaining their communication systems, power amount information that can save the line cost It is to provide a transmission device.

In addition, by using the power amount, which is information for the "power market operation", for the current amount and voltage amount information of the generator, which is information for "automatic power supply automation", by unifying the precision information by the electricity meter, It is an object of the present invention to provide a power amount information transmission device capable of preventing the occurrence of disputes in settlement and billing caused by different relationships.

In addition, the two systems of the power exchange, NEMS and MOS / CBP, use the amount of power or related information as inputs, respectively, but in the conventional structure, the amount of power that can solve the problem caused by not using the same input value. It is to provide an information transmission apparatus.

In addition, accurate power information acquired by the electricity meter on the site of the power plant is transmitted to the MOS / CBP of the power exchange through the EMS RTU, and at the same time, various statistics are obtained in real time from the server of each power plant in addition to the NEMS and MOS / CBP. It is intended to provide a power amount information transmission device that can be used as data or historical data to support the efficient operation of each power plant.

An apparatus for transmitting power information according to the present invention for solving the above problems includes a power plant for generating electricity and providing power, and a power exchange system for power supply automation and power market operation according to power information generated by the power plant. The power plant may include a power meter that receives measurement values from a power generator that generates power, a draw transformer that processes the power, a sensor that draws a power amount of a power line of a rear end of the draw transformer, and the power amount information measured by the power meter. An EMS RTU is transmitted to a power exchange, and the power exchange is configured to receive power amount information from the EMS RTU and to perform MOS / CBP operation of the power market by receiving power amount information from the NEMS. EMS RTU is configured, a plurality of F installed in the power plant A PD and an MPD for receiving information from the FPD and transmitting the information to the NEMS through a dual optical Ethernet ring, wherein the FPD is a serial output related to the amount of power information from the meter in response to the communication protocol of the meter. A SIO-B terminal equipped with a functional task module for acquiring a signal in real time and processing the data into a data object format; and an OXU for transmitting information from the SIO-B terminal to the dual optical Ethernet ring, wherein the MPD includes: And an SIO-B terminal equipped with an OXU for receiving information from the dual optical Ethernet ring and a functional task module for transmitting information from the OXU to the NEMS according to a command from the power exchange.

Here, the FPD further includes an AI terminal for receiving a measurement value from a sensor for detecting a voltage amount and a current amount between the generator and the draw-out transformer, and a PI terminal for receiving a pulse signal from a pulse output of the electricity meter. The OXU may transmit information from the AI terminal, the PI terminal, and the SIO-B terminal to the dual optical Ethernet ring.

The NEMS is composed of an NEMS main unit performing power supply automation and an NEMS communication server performing an external communication function, and the MOS / CBP is capable of communicating with the NEMS main unit according to a communication protocol and operating a power market. Comprising a MOS / CBP main unit to perform, the power related information transmitted from the SIO-B terminal of the MPD is transmitted to the NEMS main unit via the NEMS communication server, and then transmitted from the NEMS main unit to the MOS / CBP main unit It may be comprised so that.

The NEMS includes an NEMS main unit performing power supply automation, an NEMS communication server performing an external communication function, and the MOS / CBP is a MOS / CBP main unit performing a power market operation, and the NEMS communication server. And a MOS / CBP communication server capable of communicating with a communication protocol and connected to the MOS / CBP main device, wherein power related information transmitted from the SIO-B terminal of the MPD is transmitted through the NEMS communication server. After the transmission to the communication server, it may be configured to be transmitted from the MOS / CBP communication server to the MOS / CBP main unit.

According to the present invention of the above configuration, by using a common communication line for performing the function for "automatic power supply" and "power market operation" by integrating secured and managed by a single line via the EMS RTU, In addition to the physical installation and maintenance of communication lines providing information to the power exchange, the cost of maintaining their communication system is not required separately, thereby reducing line costs.

In addition, by using the amount of electric power, which is information for the "power market operation" for the current amount and voltage information of the generator that is the information for the "automatic power supply" by sharing, the settlement that occurs due to the relationship between the two measurement points and We can prevent the possession of dispute in billing.

In addition, in the two systems of the power exchange, NEMS and MOS / CBP, the problems caused by not using the same input value in using the amount of power or its related information as inputs, respectively, can be solved.

In addition, accurate power information acquired by the electricity meter on the site of the power plant is transmitted to the MOS / CBP of the power exchange through the EMS RTU, and at the same time, various statistics are obtained in real time from the server of each power plant in addition to the NEMS and MOS / CBP. It can be used as data or historical data to support the efficient operation of each power plant.

Hereinafter, a specific embodiment of the power amount information transmitting apparatus of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a power quantity information transmitting device of the present invention.

The power amount information transmission device of the present invention is composed of a power plant 100 and a power exchange 200. The power plant 100 or the power exchange 200 may be provided in plural.

The power plant 100 refers to a place that provides power by generating power using hydro, thermal, nuclear, solar, solar, wind, wave, geothermal, fuel cells, etc. The concept includes small units.

The power exchange 200 is a place for power supply automation and power market operation according to the power amount information generated in the power plant 100.

In particular, the power plant 100 is composed of a generator 110, a draw transformer 114, a power meter 120 and the EMS RTU (160).

The generator 110 is a device for producing electric power.

The draw transformer 114 is a device for processing a change in voltage in order to transmit the power produced by the generator 110. In order to prevent the resistive heat loss of the transmission line 116, boosting is usually performed. In the transformer process, energy is partially lost due to the eddy current loss.

The watt-hour meter 120 is a device that receives a measurement value, that is, a power amount measurement value, from the sensor 119 which draws out the power amount. The sensor 119 draws out an electric power quantity-related physical quantity from the power transmission line 116 (secondary side) at the rear end of the drawing transformer 114.

The EMS RTU 160 is a device that transmits the site information of the power plant 100 including the power amount information measured by the electricity meter 120 to the power exchange 200. This will be described later in detail.

Meanwhile, the power exchange 200 is composed of an NEMS 210 and a MOS / CBP 220.

The NEMS 210 is a device that performs the power supply automation. The power supply automation is performed by receiving power plant 100 field information including power amount information from the EMS RTU 160 and using the same.

The MOS / CBP 220 is a device that performs the power market operation. The power market operation is performed by receiving power amount information from the NEMS 210.

Now, the EMS RTU 160 will be described in detail.

The EMS RTU 160 includes an FPD 130 and an MPD 150.

The FPD 130 is installed in each power generator 110 or each group of power generators 110 in the power plant 100. When a plurality of generators 110 are installed in one power plant 100, a plurality of FPDs 130 may be provided in one EMS RTU 160. In addition, a plurality of generators 110 may be connected to one FPD 130.

The MPD 150 is a device that receives information from the FPD 130 through the dual optical Ethernet ring 140 and transmits the information to the NEMS 210.

In this case, the FPD 130 further includes an SIO-B terminal 135 and an OXU 138. The SIO-B terminal 135 and the OXU 138 may be configured to be connected by, for example, a VME bus.

The SIO-B terminal 135 is a terminal for acquiring power related information from the electricity meter 120 in real time, and is, for example, a low-speed serial input output basic terminal formed by RS-485 or the like. The power amount related information is output from the serial output unit 124 of the power meter 120. The electricity meter 120 is connected to correspond to the communication protocol of the electricity meter 120. The obtained information is processed into a data object format. Functions relating to acquisition and processing of the information are performed by a functional task module (not shown) that is mounted in advance.

The OXU 138 is an optical transceiver unit and is a functional block for transmitting information from the SIO-B terminal 135 to the dual optical Ethernet ring 140. The transmission may be automatically performed at predetermined intervals, and when the instruction from the NEMS 210 arrives at the SIO-B terminal 154 of the MPD 150 as described below, It may be performed in response to the instruction.

The MPD 150 further includes an OXU 158 and an SIO-B terminal 154.

The OXU 158 is an optical communication device and is a functional block for receiving information from the dual optical Ethernet ring 140. The transmission may also be automatically performed at predetermined intervals, and when the instruction from the NEMS 210 arrives at the SIO-B terminal 154 of the MPD 150 as described below, It may be performed in response to the instruction.

The SIO-B terminal 154 is a low speed serial input / output terminal for transmitting information from the OXU 158 to the NEMS 210. The transmission is performed in accordance with a command from the power exchange 200. Functions related to reception, analysis and transmission of the command are performed by a preloaded functional task module (not shown), and may be implemented by the MPU A 151 or the MPU B 152. The MPU A 151 and the MPU B 152 may also perform operation history management and diagnostic functions.

The information processed in the data object format is processed into a packet format by a predetermined communication protocol, for example, a Distributed Network Protocol (DNP), and transmitted in a unique address system.

According to the above configuration, when power-related information is serially input from the electricity meter 120 to the SIO-B terminal 135 of the FPD 130, it is processed into a data object format and sent to the OXU 138, which is a dual optical Ethernet. It is sent to the OXU 158 of the MPD 150 through the ring 140, when the command of the NEMS 210 of the power exchange 200 is received by the SIO-B terminal 154 of the MPD 150, Power quantity related information in the form of data object reaching the OXU 158 is transmitted to the MOS / CBP 220 via the NEMS 210. Therefore, it is not necessary to hypothetically operate a separate communication line in order to transmit the power-related information from the electricity meter 120, the same power-related information in the NEMS 210 and MOS / CBP 220 of the power exchange 200 By using it, the room for dispute in settlement or billing is fundamentally blocked, and the amount of power-related information is acquired in real time, so that information on the power generation site is transmitted to the power exchange 200 and surrounding power plants in real time, and using this real-time information. Various statistics and historical data can be accumulated and used.

Hereinafter, it is more preferable to introduce the following structures.

The FPD 130 may be configured to further include an AI terminal 133 and a PI terminal 134.

The AI terminal 133 receives a measurement value from the sensor 118 that detects the voltage amount and the current amount of the power line 112 (primary side) between the generator 110 and the draw-out transformer 114. This terminal is machined into a model.

The PI terminal 134 is a terminal that receives a pulse signal from the pulse output unit of the electricity meter 120 and processes it into a data object format.

In this case, the OXU 138 may transmit information from the AI terminal 133, the PI terminal 134, and the SIO-B terminal 135 to the dual optical Ethernet ring 140. have.

Accordingly, the AI terminal 133 is connected to the NEMS 210 or the MOS / CBP 220 of the power exchange 200 or the other generator 110 or the adjacent power plant 100 in the power plant 100. Voltage information and current amount information of the power line 112 between the generator 110 and the draw-out transformer 114 input through the reference, and pulse information of the power meter 120 input through the PI terminal 134, Can be referenced as data. The pulse information may be referred to for use other than the use for power transaction, for example, for managing the power system, or as an auxiliary data for the amount of power information measured by the wattmeter 120 on the secondary side.

However, the CPU 132 may be configured to process the information input by the AI terminal 133 or the PI terminal 134 into a data object format.

On the other hand, in the linkage method for the transfer of information between the NEMS 210 and the MOS / CBP 220 in the power exchange 200, the main server (main unit, 210, 220) to receive information between the 'main server The 'connection method' and the 'communication server connection method' for receiving information between the communication servers 214 and 224 may be considered.

In order to implement the main server linkage method, the NEMS 210 includes a NEMS main device 212 that performs power supply automation, and an NEMS communication server 214 that performs an external communication function. Correspondingly, the MOS / CBP 220 includes a MOS / CBP main device 222 that is capable of communicating with the NEMS main device 212 by a communication protocol and performs a power market operation.

In this case, the amount of power related information is transmitted from the SIO-B terminal 154 of the MPD 150 to the NEMS communication server 214, and then to the NEMS main device 212, and then the MOS / It is configured to be transmitted to the CBP main unit 222.

Therefore, the amount of power related information is shared by the NEMS main unit 212 and the MOS / CBP main unit 222.

On the other hand, in order to implement the communication server connection method, the NEMS 210, the NEMS main unit 212 to perform the power supply automation, and the NEMS communication server 214 to perform an external communication function. Correspondingly, the MOS / CBP 220 is capable of communicating with the MOS / CBP main device 222 performing the power market operation and the NEMS communication server 214 by a communication protocol, and the MOS / CBP main device ( And a MOS / CBP communication server 224 connected to 222.

At this time, the amount of power related information is transmitted from the SIO-B terminal 154 of the MPD 150 to the NEMS communication server 214, and then to the MOS / CBP communication server 224, and then It is configured to be transmitted to the MOS / CBP main unit 222. When transmitted to the MOS / CBP communication server 224, the same information may be transmitted to the NEMS host device 212 as well.

Accordingly, the power amount related information is transmitted to the MOS / CBP main unit 222.

The present invention has been described in detail with reference to specific examples, but the present invention is not limited thereto, and all changes and modifications made without departing from the scope of the claims should be construed as belonging to the present invention.

The present invention can be applied to the field of the transmission device for transmitting information on the amount of power produced in the power plant to the power exchange.

1 is a block diagram of a power quantity information transmitting device of the present invention.

2 is a block diagram of a power amount information transmission apparatus according to the prior art.

Explanation of symbols on the main parts of the drawings

100: power plant 110: generator (G, Generator)

112: power line 114: drawout transformer

116: transmission line 118: sensor

119: Sensor 120: Revenue Meter (WHM)

122: pulse output unit 124: serial output unit

130: field processing device (FPD)

132: CPU (Central Processing Unit)

133: AI (Analog Input)

134: PI (Pulse Input)

135, 154: SIO-B (Serial Input Output Basic)

138, 158: Optical Transceiver Unit (OXU)

140: dual optical Ethernet ring

150: MPD (Main Processing Device, common control unit)

151, 152: MPU (Main Processing Unit)

156: SIO-A (Serial Input Output Advanced)

160: EMS RTU (Energy Management System Remote Terminal Unit)

200: power exchange

210: NEMS (New EMS (Energy Management System), New Feeder Automation System)

212: NEMS main server 214: NEMS communication server

220: MOS / CBP (Market Operating System / Cost Based Pool)

222: MOS / CBP main server 224: MOS / CBP communication server

Claims (4)

A power amount information transmission device comprising a power plant that generates power and provides power, and a power exchange that performs power supply automation and power market operation according to the power amount information generated by the power plant. The power plant is a power plant site including a power generator that generates electric power, a power take-off transformer for processing the power, a power meter receiving input of a measurement value from a sensor for drawing the power amount of the power transmission line of the rear end of the draw transformer, and the power amount information measured by the power meter. EMS RTU for transmitting information to the power exchange, The power exchange is composed of an NEMS performing power supply automation by receiving power plant field information including power amount information from the EMS RTU and a MOS / CBP receiving power amount information from the NEMS to perform the power market operation. The EMS RTU includes a plurality of FPDs installed in the power plant, and an MPD for receiving information from the FPD through a dual optical Ethernet ring and transmitting the information from the FPD to the NEMS. The FPD includes a SIO-B terminal having a functional task module for acquiring a serial output signal related to the power amount information from the electricity meter in real time and processing the data into a data object format in response to the communication protocol of the electricity meter; An OXU for transmitting information from the SIO-B terminal to an Ethernet ring; The MPD includes an OXU receiving information from the dual optical Ethernet ring, and a SIO-B terminal having a functional task module for transmitting information from the OXU to the NEMS according to a command from the power exchange. Electric power information transmission device characterized in that. The method according to claim 1, The FPD includes an AI terminal for receiving measurement values from a sensor for detecting a voltage amount and a current amount between the generator and the draw-out transformer and processing the data into a data object format, and receiving a pulse signal from a pulse output of the electricity meter. Further equipped with a PI terminal for processing into a form, And the OXU transmits information from the AI terminal, the PI terminal, and the SIO-B terminal to the dual optical Ethernet ring. The method according to claim 1, The NEMS is composed of an NEMS main device performing power supply automation and an NEMS communication server performing an external communication function, The MOS / CBP is composed of a MOS / CBP main unit capable of communicating with the NEMS main unit by a communication protocol, and performs a power market operation, The amount of power-related information transmitted from the SIO-B terminal of the MPD is transmitted to the NEMS main unit through the NEMS communication server, and then transmitted from the NEMS main unit to the MOS / CBP main unit. The method according to claim 1, The NEMS is composed of an NEMS main device performing power supply automation and an NEMS communication server performing an external communication function, The MOS / CBP is composed of a MOS / CBP main device that performs the power market operation, the NEMS communication server and the MOS / CBP communication server connected to the MOS / CBP main device and the communication protocol, The amount of power related information transmitted from the SIO-B terminal of the MPD is transmitted to the MOS / CBP communication server via the NEMS communication server, and then transmitted from the MOS / CBP communication server to the MOS / CBP main device. Electric power information transmission device.

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