KR100948588B1 - An agc real-time performance evaluation system and evaluation method thereof - Google Patents

Abstract

PURPOSE: An AGC real time performance evaluation system and an evaluation method thereof are provided to evaluate the AGC performance of a generator by accurately calculating and analyzing the ramp rate of the generator. CONSTITUTION: A communication module communicates with an SCADA(Supervisory Control And Data Acquisition) server(110) of an energy management system(10). A central controller(230) includes a selection module and an operation module. The selection module selects an object generator or evaluation performance test method. The operation module calculates the ramp rate of a generator to be tested using current output and time data of the generator. A database unit(250) stores the AGC data about the generator. A display unit(270) displays the AGC data about the generator.

Description

Automatic generation control real-time implementation evaluation system and method thereof {An AGC Real-Time Performance Evaluation System and Evaluation Method}

The present invention relates to a system and method for evaluating the implementation of automatic generation control (AGC), which is one of the ancillary services, and more particularly, to increase and decrease the characteristics of a generator that is the basis of automatic generation control. By accurately measuring and analyzing the values, it is possible to evaluate the implementation level of the automatic power generation control of the generator, and to ensure the fair operation of the electricity market, it is possible to eliminate human intervention as much as possible and to ensure the accuracy and promptness of the performance evaluation. In calculating the increase / deceleration rate of the generator, the increase / deceleration rate characteristic of the generator can be calculated by allowing the generator to calculate the increase / deceleration rate within a range in which the control signal can be followed after the generator starts responding to the output control signal. Accurately calculated and used, the first output control signal at the beginning of the performance evaluation test It is possible to transmit the current output value of the generator to prevent the instability of the generator due to the sudden change in the control target value and to start the output control at the current output value. It is about.

Since the power supply and price calculation of the energy market takes place every hour or five minutes, a separate service system is required to maintain the balance of supply and demand between such time intervals. Service). In Korea's current CBP (Cost Based Pool) system, the power exchange establishes and operates a subsidiary service operation plan and pays subsidiary service settlements according to its performance. Grid operation assistance service is classified into four categories, frequency coordination service, reserve power service, reactive power service, and self-starting service, according to the power market operation rules. It is divided into operation and automatic generation control (AGC) operation. The automatic power generation control operation refers to an operation mode in which the output of each generator is controlled remotely based on economic dispatch established through the Energy Management System (EMS) under the condition that the frequency of the system is kept constant. In line with this, the generation and demand of the system are matched. In order for the automatic power generation control to function smoothly and achieve the desired purpose of stable and economical power system operation, it is necessary to secure the response characteristics of the power system, which means that the response of individual generators connected to the power system is secured. Start with securing dynamics. Therefore, individual generators connected to the grid need to be periodically checked for their characteristics and kept in optimum condition.

According to Korea's current power market operation rules, the power exchange checks the provision and implementation status of the frequency control assistance service of the electricity providers. The power exchange uses the fully automated system to check the frequency follow-up operation status of the generator, and periodically evaluates, records and manages the automatic power generation control performance in consideration of the generator output increase / decrease rate.

The performance evaluation of the automatic generation control assistance service for the central power generators currently performed by the power exchange utilizes the generator output control function built into the EMS without a separate evaluation system. Since the process is not provided separately, the test results are printed and analyzed by the chart function built into the EMS.

Fig. 1 is a block diagram showing a method for evaluating the state of automatic power generation control assistance service implemented in the prior art. Referring to FIG. 1, the conventional automatic power generation control auxiliary service transition status evaluation first starts recording from a chart embedded in the EMS, inputs an appropriate target output to the generator under test, and starts the test. When the test output is reached and the target output is reached, the test is terminated and the chart is also finished, and the chart is output to calculate the increase / decrease rate. When the calculated result is less than 80% of the reported value, the automatic generation control failure is evaluated. The increase and decrease rate is calculated as follows.

RUR _test = (P _t1 -P _t2 ) / (T ₁ -T ₂ ), RDR _test =-(P _t1 -P _t2 ) / (T ₁ -T ₂ )

(However, RUR _test : evaporation rate measured value [MW / MIN],

RDR _test : Derating rate measurement value [MW / MIN],

T ₁ : Test start time [MIN], T ₂ : Test end time [MIN],

P _t1 : T ₁ point output [MW], P _t2 : T ₂ View point output [MW])

However, this conventional method uses the generator output control function and the chart function to display the generator output change as a graph, which is built into the EMS, to manually calculate and evaluate the increase / deceleration rate. As a method for evaluating the increase / decrease rate characteristics of generators, which are the basis of automatic power generation control, since human intervention should be excluded as much as possible in order to guarantee fair operation of the power market, especially in the power market system. Is a problem inherent in the situation.

Therefore, there is a need for a new evaluation system that can solve such problems and evaluate the implementation level of the automatic power generation control of the generator quickly and accurately.

The present invention has been made to solve the above problems,

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic power generation control real-time performance evaluation system and method capable of accurately evaluating the performance level of the automatic power generation control of a generator by accurately measuring and analyzing characteristic values of the generator, which is the basis of automatic power generation control. .

Another object of the present invention is to provide an automatic power generation control real-time implementation evaluation system and method capable of ensuring the accuracy and promptness of performance evaluation as well as excluding human intervention in order to ensure fair power market operation.

Still another object of the present invention is to calculate the increase and decrease rate in the section that can follow the control signal after the generator starts to respond to the output control signal in consideration of the generator delay time in calculating the increase and decrease rate of the generator It is to provide an automatic power generation control real-time implementation evaluation system and method that can accurately calculate and use the increase / decrease rate characteristics of a generator.

Another object of the present invention is to transmit the current output value of the generator immediately before the start of the performance evaluation test to prevent the instability of the generator caused by the sudden change in the control target value and at the same time output control The present invention provides an automatic power generation control real-time implementation evaluation system and method capable of stable output control by starting at an output value.

Still another object of the present invention is to enable automatic application of the performance evaluation test method to the automatic mode and the manual mode so that the test method can be adjusted as needed, and the automatic power generation control real-time performance evaluation can increase the usability and user convenience. It is to provide a system and a method thereof.

Another object of the present invention is to develop, store, and output the performance evaluation test results in a separate report form, so that the automatic development control real-time performance evaluation system and method for enhancing the long-term preservation and utilization of the test results as evidence data and methods thereof To provide.

Automatic power generation control real-time implementation evaluation system and method for achieving the above object of the present invention includes the following configuration.

Automatic power generation control real-time implementation evaluation system according to an embodiment of the present invention is a communication module that can send and receive signals or data with the SCADA server of the energy management system (EMS); A selection module for selecting a generator to be tested or a performance evaluation test method among generators connected to a SCADA server, an input module for inputting a target output to be tested, and a generator to be tested at the start of the test. A generator control signal generation module for generating an output control signal for and transmitting through the communication module, and using the current output and time data of the generator under test in response to the output control signal to calculate the increase and decrease rate of the generator under test A central control unit including a calculation module; A database unit for storing automatic power generation control-related data relating to the generator under test obtained from the generator database of the SCADA server and output control signals or data relating to the response output generated during the course of the test; And a display unit for displaying the automatic power generation control-related data about the generator under test obtained from the generator database of the SCADA server and the output control signal or data relating to the response output generated in the course of the test. The module increases or decreases by dividing the absolute value of the difference between the 10% reaching time of the target output and the 90% reaching time of the target output by the absolute value of the difference between the 10% reaching time of the target output and the 90% reaching time of the target output. By calculating the power factor, it is possible to accurately calculate the increase and decrease rate of the generator.

According to another embodiment of the present invention, in the automatic power generation control real-time implementation evaluation system according to the present invention, the generator control signal generation module transmits the current output immediately before the test start of the generator under test as the first output control signal at the start of the test. By preventing the instability of the generator due to the sudden change in the control target value and at the same time to enable a stable output control, the central control unit further includes a report preparation module for preparing a report on the test results, the database unit is It characterized in that it further comprises a report storage module for storing the report created in the report preparation module.

The automatic power generation control real-time implementation evaluation method according to an embodiment of the present invention comprises the steps of connecting to the SCADA server of the energy management system (EMS) through a communication module; A generator selection step of selecting a generator under test from among generators connected to a SCADA server through a selection module; A generator data acquisition step of storing automatic generation control related data about a generator under test obtained from a generator database of a SCADA server and being displayed on a display unit; A target output input step of inputting a target output through the input module; A control signal transmission step of generating an output control signal for the generator under test through a generator control signal generation module at the beginning of the test and transmitting it through the communication module; A test data acquisition step of storing a current output and time data of the generator under test in response to the output control signal in a data bay; Calculating a rate of increase / decrease of the generator under test using the current output and time data of the generator under test in response to the output control signal through a calculation module; And an evaluation step of evaluating whether the generator under test is implemented in the automatic power generation control using the increase / decrease rate. The first output control signal at the start of the test in the control signal transmission step is the current output immediately before the test start of the generator under test. This function prevents the instability of the generator caused by sudden change of control target value and enables stable output control.In the test data acquisition step, the response output is from 10% to 90% of the target output. Data is stored, and the calculating step includes the absolute value of the difference between the 10% of the target output and the 90% of the target output. By calculating the increase and decrease rate by dividing by the absolute value of the difference, it is possible to accurately calculate the increase and decrease rate of the generator.

The present invention can obtain the following effects by the configuration, combination, and use relationship described above with the present embodiment.

The present invention has the effect of accurately measuring and analyzing the increase and decrease rate characteristic value of the generator that is the basis of the automatic power generation control to evaluate the automatic power generation control implementation level of the generator.

The present invention has the effect of ensuring the accuracy and promptness of performance evaluation, as well as excluding human intervention in order to ensure a fair electricity market operation.

The present invention is to calculate the increase and decrease rate in the section that can follow the control signal after the generator starts to respond to the output control signal in consideration of the response delay time of the generator in calculating the increase and decrease rate of the generator It has the effect of accurately calculating and using the increase and decrease rate characteristic.

According to the present invention, the first output control signal at the beginning of the performance evaluation test transmits the current output value of the generator immediately before the start of the test so as to prevent the instability of the generator due to a sudden change in the control target value and to start the output control at the current output value. The stable output control is possible.

The present invention can be selectively applied to the automatic evaluation mode and the manual evaluation mode to adjust the test method as needed has the effect of increasing the usability and user convenience.

The present invention can produce, store, and output the results of the performance evaluation test in a separate report form, which has the effect of improving the long-term preservation and usability of the test results as evidence.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the automatic power generation control real-time implementation evaluation system and method according to the present invention will be described in detail.

FIG. 2 is a system block diagram of automatic power generation control in an energy management system (EMS), FIG. 3 is a block diagram showing the configuration of the automatic power generation control real-time performance evaluation system according to an embodiment of the present invention, and FIG. Is a block diagram showing the configuration of the automatic power generation control real-time implementation evaluation system according to another embodiment of the present invention, Figure 5 is a block diagram showing the automatic power generation control real-time implementation evaluation method according to an embodiment of the present invention, 6 is a block diagram illustrating a method for evaluating automatic power generation control in real time according to another embodiment of the present invention.

First, referring to FIG. 2, a brief description of a system in which an automatic power generation control (AGC) is performed in an energy management system (EMS) will include automatic power generation including a generator control module to generate a control signal for a generator on an EMS. The control unit controls the automatic power generation for the generators of the power system through a SCADA server for acquiring and storing data related to the power system, and the present invention provides a real-time implementation evaluation for such automatic power generation control (AGC). It was developed for.

3 to 6, the automatic power generation control real-time implementation evaluation system 20 according to an embodiment of the present invention communicates signals or data with the SCADA server 110 of the energy management system EMS 10. Communication module 210 that can send and receive; A selection module 231 for selecting a generator to be tested or a performance evaluation test method among generators 30 connected to the SCADA server 110, and an input module for inputting a target output to be tested ( 232), a generator control signal generation module 234 for generating an output control signal for the generator under test at the beginning of the test and transmitting it through the communication module 210, and a test object responding to the output control signal. A central control unit 230 including a calculation module 235 for calculating the increase / decrease rate of the generator under test using the current output and the time data of the generator; Database unit for storing the data related to the automatic power generation control related to the generator under test obtained from the generator database 111 of the SCADA server 110 and the output control signal or the response output generated in the course of the test ( 250); Display unit for displaying the data related to the automatic power generation control related to the generator under test from the generator database 111 of the SCADA server 110 and the output control signal or the response output generated in the course of the test ( 270).

The communication module 210 is an interface that can exchange signals or data with the SCADA server 110 of the energy management system (EMS) 10, and the automatic power generation control real-time implementation evaluation according to the present invention. The system 20 may be operated in a separate computer (PC) and the output control signal of the generator 30 to the generator 30 through the SCADA server 110 of the energy management system (EMS) 10. It also transmits and signals data such as the current output of the generator 30 is also fed back through the SCADA server 110, the data with the SCADA server 110 of the energy management system (EMS) 10 I need a configuration such as the communication module 210 that can exchange data. As a data acquisition communication protocol applied to the communication module 210, a communication protocol such as an intersite data (ISD) may be used.

The central control unit 230 is a configuration for controlling the overall operation of the automatic power generation control real-time implementation evaluation system 20 according to the present invention, the test preparation work before the implementation evaluation test (that is, the communication module 210) When connected to the SCADA server 110 through the supply capacity, the current load and the system frequency value is read and updated in real time), start and end of the test, various control signal generation and test data in the test process The overall operation of the system, such as the calculations and evaluations used, will be managed. To this end, a central processing unit (CPU) or the like may be used as the central control unit 230, and the test target generator is selected among the generators 30 connected to the SCADA server 110 in the central control unit 230. Or a selection module 231 for selecting a performance evaluation test method, an input module 232 for inputting a target output to be tested, and generating an output control signal for the generator under test at the beginning of the test. A generator module for calculating the increase / decrease rate of the generator under test using the generator control signal generation module 234 transmitted through the communication module 210 and the current output and time data of the generator under test in response to the output control signal ( 235).

The selection module 231 has a function of selecting a generator to be tested from among the generators 30 connected to the SCADA server 110 or selecting a performance evaluation test method in an automatic mode or a manual mode before starting the performance evaluation test. In this part, when the generator under test is selected from among the generators 30 connected to the SCADA server 110 through the selection module 231, the automatic generation control-related characteristic data of the generator, that is, the generator Database unit 250 which will be described later by reading the facility capacity, the automatic power generation control upper limit value (LFC Limit Max), the automatic power generation control lower limit value (LFC Limit Min), the evaporation rate and the deceleration rate, and the current output value from the generator database 111 of SCADA. More specifically, it is stored in the generator storage module 251, and is displayed on the display unit 270 (more specifically, the generator display module 271) which will be described later. In addition, the selection module 231 may select whether to perform the performance evaluation test in the automatic mode or the manual mode, in the case of the automatic mode, the generator's response output (in response to the output control signal transmitted to the generator) When the current output of the responding generator is referred to as 'response output' below 90% of the target output (a detailed description will be described later), the transmission of the output control signal is automatically stopped and the test is terminated. In this case, even after the generator's response output reaches 90% of the target output, the test can be terminated as soon as the operator's test stop signal is transmitted, allowing the test to run flexibly depending on the situation.

The input module 232 is a part capable of inputting a target output to be tested before starting the performance evaluation test. When the target output is input to the generator under test through the input module 232, the target output is tested. If the value is larger than the current output before the start of the test generator, the evaporation test is automatically recognized. If the value is smaller than the current output of the test generator, it is automatically recognized as the desensitization test.

In addition, the central control unit 230 further includes a start stop module 233 that can select the start and end time of the test (if the start stop module 233 is not included separately in the selection module 231). Charge)), the start stop module 233 is completed by the test preparation work, such as the selection of the generator to be tested, the selection of the test method, the input of the target output through the selection module 231 and the input module 232 Thereafter, it becomes possible to selectively control the time when the performance evaluation test is started, that is, when the output control signal is transmitted to the generator under test and when the test is stopped (especially required in the manual mode).

The generator control signal generation module 234 generates an output control signal for the generator under test and transmits it through the communication module 210 at the beginning of the test. Before it is performed, the automatic generation control function of the EMS generates and transmits a control signal for the generator, but when the performance evaluation test starts, the central control unit 230 generates and controls an output control signal for the generator under test. The generator control signal generation module 234 is responsible for this. The generator control signal generation module 234 compares the current output of the generator under test before the test with the target output input through the input module 232 to recognize whether it is an evaporation test or an irritation test and generates an output control signal accordingly. The output control signal can be generated according to the following equation.

TatgetMW _t = TatgetMW _{t -1} ± ΔMW _{Ramp Rate , 4 sec}

(ΔMW _{Ramp Rate , 4 sec} = (MW _{Ramp Rate , 1 Min} ) / 15

TatgetMW _t : control target value of current cycle, TatgetMW _{t -1} : control target value of previous cycle,

ΔMW _{Ramp Rate , 4 sec} : _ramp rate per 4 seconds, MW _{Ramp Rate , 1 Min} : Change rate per minute)

That is, the output control signal is converted into the increase / deceleration rate per minute and the evaporation / deceleration direction in the same direction as the EMS automatic control signal (AGC) control signal is transmitted every 4 seconds. The control target value of the current period is calculated by adding or subtracting accordingly. In this case, in particular, the first output control signal at the start of the test is calculated and transmitted to the current output value immediately before the start of the test of the generator under test, which prevents the instability of the generator due to sudden changes in the control target value and at the same time output control. This is to enable stable output control of generator by starting from output value.

The calculation module 235 calculates the increase / deceleration rate of the test target generator by using the current output of the test target generator corresponding to the output control signal, that is, the response output and the time data. When the performance evaluation test is started by the start signal, the output control signal generated from the generator control signal generation module 234 is transmitted to the test target generator through the SCADA server 110 and the generator of the test target responds. The output is also fed back through the SCADA server 110 is stored in the database unit 250 (more specifically, the test data storage module 252) which will be described later, and the display unit 270 (more specifically, the test state). The display module 272, which is displayed on the display module 272, in the calculation module 235, the response output and time stored in the database unit 250 (more specifically, the test data storage module 252). Thereby calculating the increase and decrease of the test subject balyul generator using the data. In this case, in particular, the calculation rate of increase / decrease used by the calculation module 235 is as follows.

RR _test = │MW ₉₀ -MW ₁₀ │ / │T ₉₀ -T ₁₀ │

(However, RR _test : measured increase and decrease rate [MW / MIN],

T ₁₀ : 10% reach time of target output [MIN], T ₉₀ : 90% reach time of target output [MIN],

MW ₁₀ : T ₁₀ time point output [MW], MW ₉₀ : T ₉₀ time point output [MW])

That is, in the present invention, the calculation module 235 simply calculates the increase / deceleration rate by simply calculating all the feedback outputs fed back at the start of the test, and the response output reaches 10% of the target output in consideration of the response delay time of the generator. By extracting only the data from the time point to the 90% of the target output and calculating the increase / deceleration rate using this, the increase / decrease rate can be calculated in the section following the output control signal after the generator starts responding to the output control signal. It is possible to accurately calculate the increase and decrease characteristics of the generator under test. The calculation module 235 evaluates the performance of the automatic generator control assistance service of the generator under test based on the calculated increase / deceleration rate. When the calculated increase / decrease rate is less than 80% of the reported increase / decrease rate, automatic generation control failure is performed. Will be judged. As described above, the calculation module 235 can accurately calculate the increase / decrease rate of the generator to be tested to evaluate the implementation level, thereby ensuring a fair power market operation.

The database unit 250 relates to automatic power generation control-related data relating to the generator to be tested obtained from the generator database 111 of the SCADA server 110 and output control signals or response outputs generated in the course of the test. In a configuration such as a memory (RAM) or a disk storage device for storing data, the database unit 250 for this purpose, the automatic generation of the generator under test from the generator database 111 of the SCADA server 110 Generator storage module 251 for storing control-related data, and a test data storage module 252 for storing data relating to the output control signal or the response output generated in the course of the test.

As described above, when the generator storage module 251 is connected to the SCADA server 110 of the EMS 10 through the communication module 210, the supply capacity related to the automatic power generation control, the current load, the system Frequency and the like data is updated and stored in real time, when the generator under test is selected through the selection module 231 is also the generator stored in the generator database 111 of the SCADA server 110 The generator database 111 includes characteristics data related to the automatic power generation control for the generator, that is, the equipment capacity of the generator, the automatic power generation control upper limit value (LFC Limit Max), the automatic power generation control lower limit value (LFC Limit Min), the evaporation rate and the deceleration rate, and the current output value. It is read from and stored. In particular, the generator storage module 251 accurately records and stores the current output value of the generator under test immediately before the test start and provides it to the generator control signal generation module 234.

The test data storage module 252 includes an output control signal generated by the generator control signal generation module 234 and transmitted to the test target generator through a SCADA server 110 when the test is started as described above. The current output of the generator under test, that is, the response output and the time data, which respond to the output control signal fed back from the SCADA server 110 is stored in real time. In particular, the test data storage module 252 has a response output (MW ₁₀ ), time data (T ₁₀ ), and a response output of 90% of the target output when the response output of the test generator reaches the 10% level of the target output. The response output (MW ₉₀ ) and the time data (T ₉₀ ) at the time of reaching the level are accurately recorded and provided to the calculation module 235.

The display unit 270 relates to automatic power generation control data related to the generator under test acquired from the generator database 111 of the SCADA server 110 and output control signals or response outputs generated in the course of the test. In the same configuration as the display device for displaying data on the screen, for this purpose, the display unit 270 displays data related to the automatic power generation control related to the generator under test acquired from the generator database 111 of the SCADA server 110. Generator display module 271 for displaying, and a test state display module 272 for displaying the data on the output control signal or the response output generated in the course of the test.

As described above, when the generator display module 271 is connected to the SCADA server 110 of the EMS 10 through the communication module 210, the supply capacity related to the automatic power generation control, the current load, the system Frequency and the like data is updated and displayed in real time, when the generator under test is selected through the selection module 231 is also a corresponding generator stored in the generator database 111 of the SCADA server 110 Characteristics of the automatic power generation control for the generator, that is, the generator capacity, the automatic power generation control upper limit value (LFC Limit Max), the automatic power generation control lower limit value (LFC Limit Min), evaporation rate and deceleration rate, the current output value, etc. Will be read from and displayed.

As described above, the test state display module 272 includes an output control signal generated by the generator control signal generation module 234 and transmitted to the generator under test through the SCADA server 110 when the test is started. The current output of the generator under test, that is, the response output and the time data, which responds to the output control signal fed back from the SCADA server 110 is displayed in real time.

According to another embodiment of the present invention, in the automatic power generation control implementation evaluation system 20 according to the present invention, the central control unit 230 further includes a report preparation module 236 for preparing a report on a test result. The database unit 250 may further include a report storage module 253 for storing a report generated by the report generation module 236.

The report preparation module 236 is a part which summarizes the results of the performance evaluation test through the automatic power generation control performance evaluation system 20 according to the present invention in a report form, the name of the generator under test, the test date and time, and the generator. The report will be prepared by organizing the increase / decrease rate, target output, response output and time during the test process, increase / decrease rate calculated from the test result, and evaluation result.

The report storage module 253 is a part for storing a report on the test result generated by the report generation module 236, so that the test result report can be stored for a long time to be used as evidence or various data.

As described above, in the present invention, the report preparation module 236 and the report storage module 253 can prepare, store, and output the results of the performance evaluation test in a separate report form. To increase.

Hereinafter, the implementation evaluation method using the automatic power generation control implementation evaluation system 20 according to the present invention described above will be described in detail.

Referring to Figure 5, the automatic power generation control implementation evaluation method according to an embodiment of the present invention is connected to the SCADA server 110 of the energy management system (EMS) 10 through the communication module 210 Step S11; A generator selection step (S12) of selecting a generator under test from the generator 30 connected to the SCADA server 110 through the selection module 231; Generator data acquisition step (S13) is stored in the database unit 250 and the automatic power generation control-related data about the test target generator obtained from the generator database 111 of the SCADA server 110 is displayed on the display unit 270 (S13). ); A target output input step S14 for inputting a target output through the input module 232; Control signal transmission step (S16) for generating an output control signal for the generator under test through the generator control signal generation module 234 and the transmission through the communication module 210 with the start of the test; A test data acquisition step (S17) of storing the current output and time data of the generator under test in response to the output control signal in the database unit 250; A calculation step (S18) of calculating an increase / deceleration rate of the test target generator using the current output and time data of the test target generator responding to the output control signal through the calculation module 235; It may include; an evaluation step (S19) for evaluating whether the generator under test to implement the automatic power generation control using the increase and decrease rate. Test object to accurately calculate the generator's response by the automatic power generation control signal by preventing the generator output from being changed by the operation of the governor according to the system frequency fluctuation before the automatic power generation control performance evaluation according to the present invention. It is to release the Governor Free operation mode of the generator 30, and also in addition to the generator output control signal in the automatic power generation control transition evaluation system 20 according to the present invention while the test is in progress In the automatic power generation control function, the generator output control signal is generated in duplicate so that the control mode of the generator 30 is switched to the manual mode in the automatic power generation control function of the EMS 10.

In the connecting step (S11) is connected to the SCADA server 110 of the energy management system (EMS, 10) through the communication module 210 of the automatic power generation control real-time implementation evaluation system 10 according to the present invention Through this, the output control signal of the generator 30 is transmitted to the generator under test, and the data such as the current output of the generator under test can also be fed back through the SCADA server 110.

In the generator selection step S12, the generator under test is selected from among the generators 30 connected to the SCADA server 110 of the EMS 10 through the selection module 231. In the SCADA server 110, generators are classified according to power generation companies and power plants, so that the generators to be tested can be easily searched and selected.

In the generator data acquisition step (S13), the automatic power generation control characteristic data of the generator under test selected through the selection module 231, that is, the equipment capacity of the generator, the automatic power generation control upper limit value (LFC Limit Max), the lower limit of the automatic power generation control (LFC Limit Min), the evaporation rate and the deceleration rate, the current output value and the like from the generator database 111 of the SCADA server 110 to read the database unit 250 (more specifically, generator storage module 251) In the display unit 270 (more specifically, the generator display module 271).

In the target output input step S14, a target output for the test target generator to be tested is input through the input module 232. When the target output is input, the target output is automatically recognized as evaporation test if the target output is larger than the current output before the start of the test generator. If the target output is smaller than the current output of the generator under test, the deceleration test is automatically recognized. .

Referring to FIG. 6, in the automatic power generation control real-time performance evaluation method according to the present invention, a test method selection step (S15) for selecting a method of the performance evaluation method as an automatic mode and a manual mode through the selection module 231 is additionally performed. If the automatic mode is selected in the test method selection step (S15), if the response output of the generator reaches 90% of the target output after starting the test, the test is automatically terminated while the output control signal transmission is stopped. If the manual mode is selected, even if the generator's response output reaches 90% of the target output after the start of the test, the test can be terminated as soon as the operator's test stop signal is transmitted through the start stop module 233. As a result, the test can be operated flexibly.

In the control signal transmission step (S16), the test is started and at the same time the output control signal generated through the generator control signal generation module 234 is transmitted to the generator under test through the communication module 210 and the skid server 110. Will be sent. The information about the output control signal generated by the generator control signal generation module 234 will be omitted in order to avoid redundant description as described above. In this case, in particular, the first output control signal at the start of the test is calculated and transmitted to the current output value immediately before the start of the test of the generator under test, which prevents the instability of the generator due to sudden changes in the control target value and at the same time, This is to enable stable output control of generator by starting from output value.

In the test data acquisition step (S17), the output control signal generated from the generator control signal generation module 234 and transmitted to the generator under test through the SCADA server 110 as the performance evaluation test starts, Response output, time data, etc. of the generator under test fed back through the SCADA server 110 are stored in the database unit 250 (more specifically, the test data storage module 252) and the display unit ( 270, more specifically, the test status display module 272). In particular, the test data storage module 252 has a reaction output (MW ₁₀ ) and time data (T ₁₀ ) and the response output 90% of the target output when the response output of the generator under test reaches a level of 10% of the target output. The response output MW ₉₀ and the time data T ₉₀ at the time point of reaching the level are accurately recorded and provided to the calculation module 235. Referring to FIG. 6, as described above, in the present invention, when the automatic mode is selected, when the response output of the generator reaches 90% of the target output, the test is automatically terminated while the transmission of the output control signal is stopped and the test data is acquired. When the manual mode is selected, even if the generator's response output reaches 90% of the target output after the start of the test, the test stop signal of the operator is immediately transmitted through the start stop module 233. As the signal transmission stops, the test is terminated and the test data acquisition ends.

In the calculation step (S18), the increase and decrease rate of the test target generator is calculated through the calculation module 235 using the response output and the time data of the test target generator acquired and stored through the test data acquisition step (S17). As described above, in the present invention, the calculation module 235 simply calculates the increase / deceleration rate by simply calculating all the response outputs fed back at the start of the test, and the response output is determined by considering the response delay time of the generator. Calculate the increase / decrease rate in the section following the output control signal after the generator starts to respond to the output control signal by extracting only the data from 10% to 90% of the target output. It is possible to accurately calculate the increase and decrease characteristics of the generator under test.

In the evaluation step (S19) to evaluate whether or not to implement the automatic power generation control auxiliary service of the test target generator through the calculation module 235 based on the increase and decrease rate calculated through the calculation step (S18), the calculated increase and decrease If the prevalence is less than 80% of the reported increase / decrease rate, it is judged that the automatic generation control is not performed.

Referring to FIG. 6, in the automatic power generation control implementation evaluation method according to another embodiment of the present invention, in addition to the test method selection step S15 described above, a report preparation and storage step S20 may be further performed.

In the report creation and storage step (S20), through the report generation module 236, the performance evaluation test results (that is, the test generator name, test date and time, generator increase and decrease) through the automatic power generation control implementation evaluation system 20 according to the present invention. Incidence rate, target output, response output and time in the test process, increase / decrease rate calculated from the test result, evaluation result, etc.) are summarized in a report form, and the test result generated by the report storage module 253 is prepared. The report is stored for a long time so that it can be used as evidence or various data. In this way, the report preparation and storage step (S20) may improve the utilization of the test results as long-term preservation and evidence by creating, storing and outputting the results of the performance evaluation test in a separate report form.

In the above, the Applicant has described preferred embodiments of the present invention, but these embodiments are merely one embodiment for implementing the technical idea of the present invention, and any changes or modifications may be made as long as the technical idea of the present invention is implemented. Should be interpreted as being within the scope.

1 is a block diagram showing a method for evaluating a state of transition of automatic power generation control assistance service that is conventionally implemented.

2 is a system block diagram for automatic power generation control in an energy management system (EMS).

Figure 3 is a block diagram showing the configuration of the automatic power generation control real-time implementation evaluation system according to an embodiment of the present invention

Figure 4 is a block diagram showing the configuration of the automatic power generation control real-time implementation evaluation system according to another embodiment of the present invention

5 is a block diagram showing a method for evaluating real-time performance of automatic power generation control according to an embodiment of the present invention.

6 is a block diagram showing a method for evaluating real-time performance of automatic power generation control according to another embodiment of the present invention.

* Explanation of the main symbols used in the drawings

10: Energy Management System (EMS) 110: SCADA Server 111: Generator Database

20: Automatic generation control real-time performance evaluation system

210: communication module 230: central control unit 250: database unit 270: display unit

231: selection module 232: input module 233: start stop module

234: generator control signal generation module 235: calculation module 236: report generation module

251: generator storage module 252: test data storage module 253: report storage module

271: generator display module 272: test status display module

30: generator

Claims (3)

Communication module for transmitting and receiving signals or data with the SCADA server of the energy management system (EMS); A selection module for selecting a generator to be tested or a performance evaluation test method among generators connected to a SCADA server, an input module for inputting a target output to be tested, and a generator to be tested at the start of the test. A generator control signal generation module for generating an output control signal for and transmitting through the communication module, and using the current output and time data of the generator under test in response to the output control signal to calculate the increase and decrease rate of the generator under test A central control unit including a calculation module; A database unit for storing automatic power generation control-related data relating to the generator under test obtained from the generator database of the SCADA server and output control signals or data relating to the response output generated during the course of the test; And a display unit for displaying the automatic power generation control-related data about the generator under test obtained from the generator database of the SCADA server and the output control signal or the response output data generated in the course of the test. In the calculation module, the absolute value of the difference between the 10% reaching time of the target output and the 90% reaching time of the target output is the absolute value of the difference between the 10% reaching time of the target output and the 90% reaching time of the target output. Automatic generation control real-time performance evaluation system, characterized in that it is possible to calculate the increase and decrease rate of the generator accurately by dividing the increase and decrease rate. The method of claim 1, The generator control signal generation module transmits the current output immediately before the test start of the generator under test as the first output control signal at the start of the test, thereby preventing the instability of the generator caused by the sudden change in the control target value and at the same time enabling stable output control. To do this, The central control unit further includes a report generation module for preparing a report on a test result, and the database unit further comprises a report storage module for storing a report generated by the report generation module Performance Evaluation System. A connection step of accessing a SCADA server of an energy management system (EMS) through a communication module; A generator selection step of selecting a generator under test from among generators connected to a SCADA server through a selection module; A generator data acquisition step of storing automatic generation control related data about a generator under test obtained from a generator database of a SCADA server and being displayed on a display unit; A target output input step of inputting a target output through the input module; A control signal transmission step of generating an output control signal for the generator under test through a generator control signal generation module at the beginning of the test and transmitting it through the communication module; A test data acquisition step of storing a current output and time data of the generator under test in response to the output control signal in a data bay; Calculating a rate of increase / decrease of the generator under test using the current output and time data of the generator under test in response to the output control signal through a calculation module; And an evaluation step of evaluating whether the generator under test is implemented in the automatic generation control using the increase / decrease rate. In the control signal transmission step, the first output control signal at the start of the test transmits the current output immediately before the start of the test of the generator to be tested to prevent the instability of the generator caused by the sudden change in the control target value and at the same time to enable stable output control. , In the test data acquisition step, the response output stores data from 10% to 90% of the target output, and the calculation step corresponds to 10% of the target output and 90% of the target output. Automatic generation characterized in that the generator's increase and decrease rate can be calculated accurately by calculating the increase and decrease rate by dividing the absolute value of the difference between the outputs by the absolute value of the difference between the 10% arrival time of the target output and the 90% arrival time of the target output. Controlled Real-Time Performance Evaluation Method.

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