KR20160107782A - System and method for assessing performance of electric energy storage system by using test sequence - Google Patents

System and method for assessing performance of electric energy storage system by using test sequence Download PDF

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Publication number
KR20160107782A
KR20160107782A KR1020150031054A KR20150031054A KR20160107782A KR 20160107782 A KR20160107782 A KR 20160107782A KR 1020150031054 A KR1020150031054 A KR 1020150031054A KR 20150031054 A KR20150031054 A KR 20150031054A KR 20160107782 A KR20160107782 A KR 20160107782A
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South Korea
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ees
power
unit
performance
output
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KR1020150031054A
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Korean (ko)
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임성정
김용성
서우현
정중일
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한국전기연구원
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/06—Arrangements for measuring electric power or power factor by measuring current and voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
    • G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/31721—Power aspects, e.g. power supplies for test circuits, power saving during test

Abstract

Disclosed is a system for assessing performance of an electric energy storage system (EES) by using a test sequence. The system for assessing performance of the EES includes: an electric power system simulation unit for outputting first power to EES; a battery simulation unit for consuming second power outputted from the EES; a measuring unit for measuring data with respect to at least one among an input current feature, an input voltage feature, an output current feature, an output voltage feature, a frequency feature, an active voltage feature, and a relay trip output feature of the EES; a storing unit for storing a test sequence corresponding to a predetermined test item; and a monitoring unit for controlling a size of output power of the electric power system simulation unit and a size of power consumption of the battery simulation unit according to the test sequence, and assessing performance of the EES based on the data measured by the measuring unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a system and a method for evaluating performance of an EES using a test sequence,

The present invention relates to a system and method for evaluating the performance of an EES using a test sequence. More specifically, the present invention relates to a performance evaluation system and method using a test sequence that, in order to evaluate the performance of an EES used in a smart grid or the like, shows the test procedure in a time-series manner.

With the development of the smart grid related industries in the electric field, the demand for electric energy storage system (EES) for storing electric energy is increasing. EES is a device that stores excess power at a power plant and temporarily transfers the stored power to the load when power is insufficient.

Since the EES is a device for reliably operating a load, it is important to evaluate the performance of the EES in advance in order to prevent a situation where the supply of power is interrupted to stop the operation of the load. However, since there is no apparatus for evaluating the performance of the EES at a stable and consistent level, an efficient method for evaluating the performance of the EES is required.

A system and method for evaluating the performance of an EES using a test sequence in accordance with an embodiment of the present invention aims at a simple evaluation of the performance of the EES.

Also, a system and method for evaluating the performance of an EES using a test sequence according to an embodiment of the present invention aims to objectively evaluate the performance of the EES.

A performance evaluation system according to an embodiment of the present invention includes:

A system for evaluating performance of an electric energy storage system (EES), the system comprising: a power system simulator for outputting first power to the EES; A battery simulator for consuming a second power output from the EES; A measuring unit for measuring data on at least one of an input current characteristic, an input voltage characteristic, an output current characteristic, an output voltage characteristic, a frequency characteristic, an active power characteristic, and a relay trip output characteristic of the EES; A storage unit for storing a test sequence corresponding to a predetermined test item; And a monitoring unit for controlling the magnitude of the output power of the power system simulation unit and the magnitude of the power consumption of the battery simulation unit according to the test sequence and evaluating the performance of the EES based on the data measured by the measurement unit have.

The test sequence may include information on the magnitude of the output power of the power system simulation unit to be set according to the passage of time and information on the magnitude of power consumption of the battery simulator.

The storage unit may further store an evaluation sequence corresponding to the predetermined test item, and the monitoring unit may evaluate the performance of the EES based on data measured by the measurement unit in accordance with the evaluation sequence.

The evaluation sequence may include information about a type of data to be measured by the measuring unit and a time point at which the data is to be measured after the start of the test.

The monitoring unit may output the performance evaluation result of the EES.

The monitoring unit may receive the predetermined test item from an administrator or an administrator terminal.

According to another aspect of the present invention,

In a performance evaluation method of an electric energy storage system (EES) by a performance evaluation system, the monitoring unit controls the magnitude of the output power of the power system simulation unit and the power consumption of the battery simulation unit according to a test sequence corresponding to a predetermined test item step; Outputting a first power to the EES according to a magnitude of the controlled output power; The battery simulation unit consuming a second power output from the EES according to the magnitude of the controlled power consumption; And evaluating the performance of the EES based on the data measured by the monitoring unit by the monitoring unit.

The test sequence may include information on the magnitude of the output power of the power system simulation unit to be set according to the passage of time and information on the magnitude of power consumption of the battery simulator.

The evaluating step may include evaluating performance of the EES based on data measured by the measuring unit according to an evaluation sequence corresponding to the predetermined test item.

The evaluation sequence may include information about a type of data to be measured by the measuring unit and a time point at which the data is to be measured after the start of the test.

The performance evaluation method may further include the step of the monitoring unit outputting a performance evaluation result of the EES.

Wherein the controlling step comprises: receiving the test item from an administrator or an administrator terminal; And acquiring the test sequence corresponding to the input test item.

A performance evaluation method according to another embodiment of the present invention includes:

A method for evaluating performance of an electric energy storage system (EES) by a monitoring apparatus, comprising: acquiring a test sequence corresponding to a predetermined test item; and controlling the magnitude of the output power of the power system simulator based on the obtained test sequence, Causing a first power to be output from the power system simulation unit to the EES; Controlling a magnitude of power consumption of the battery simulation unit based on the obtained test sequence so that a second power output from the EES is consumed by the battery simulation unit; And evaluating the performance of the EES based on data measured by the metrology unit.

A system and method for evaluating the performance of an EES using a test sequence according to an embodiment of the present invention can easily evaluate the performance of the EES.

In addition, a system and method for evaluating the performance of an EES using a test sequence according to an embodiment of the present invention can objectively evaluate the performance of the EES.

1 is a diagram showing a general performance evaluation system.
2 is a diagram showing a performance evaluation system according to an embodiment of the present invention.
3 is a flowchart showing a performance evaluation method according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

The term " part " used in this embodiment means a hardware component such as software, FPGA, or ASIC, and 'part' performs certain roles. However, 'minus' is not limited to software or hardware. The " part " may be configured to be in an addressable storage medium and configured to play back one or more processors. Thus, by way of example, and by no means, the terms " component " or " component " means any combination of components, such as software components, object- oriented software components, class components and task components, Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. The functions provided in the components and parts may be combined into a smaller number of components and parts or further separated into additional components and parts.

1 is a diagram showing a general performance evaluation system.

1, a general performance evaluation system includes a power system simulation unit 11, a battery simulation unit 12, a measurement unit 13, and a monitoring unit 14. The power system simulation unit 11 outputs AC power to the EES 10 and the battery simulation unit 12 consumes DC power output from the EES 10. [ The EES 10 stores AC power output from the power system simulation unit 11, converts the stored AC power into DC power, and outputs the DC power to the battery simulation unit 12. The measuring unit 13 senses the size of the input voltage of the EES 10, the size of the output voltage, and the like, and transmits the sensed information to the monitoring unit 14. The monitoring unit 14 outputs the information sensed by the measuring unit 13.

In the general performance evaluation system, the power system simulation unit 11 adjusts the magnitude of the output power according to the control command input by the manager, and likewise, the battery simulation unit 12 calculates the power consumption Adjust the size of the power.

According to the general performance evaluation system, the control commands input to the power system simulation unit 11 and the battery simulation unit 12 are manually input to the power system simulation unit 11 and the battery simulation unit 12 by the administrator , It is difficult to maintain the consistency of the experimental conditions.

In addition, since the administrator must determine the subjective performance of the EES 10 based on the information output from the monitoring unit 14, it is difficult to ensure the objectivity of the performance of the EES 10.

2 is a diagram illustrating a performance evaluation system 200 in accordance with an embodiment of the present invention.

2, a performance evaluation system 200 according to an exemplary embodiment of the present invention includes a power system simulation unit 210, a battery simulation unit 230, a measurement unit 250, a monitoring unit 270, 290).

The performance evaluation system 200 according to an exemplary embodiment of the present invention is a system for verifying whether the EES 10 conforms to the standard performance and specifications of the EES 10. The performance evaluation system 200 prepares and executes various test cases, and obtains and analyzes the response of the EES 10 to determine whether the EES 10 normally operates for a specific test case.

First, the power system simulation unit 210 transfers the first power to the EES 10 under the control of the monitoring unit 270. The first power may include, but is not limited to, AC power, for example. The power system simulation unit 210 simulates a power system including a power plant, a transformer, and the like by programming. The power system simulated by the power system simulation unit 210 can be variously changed according to the setting of the manager.

The battery simulation unit 230 consumes the second power output from the EES 10 under the control of the monitoring unit 270. [ The second power may include, but is not limited to, DC power, for example. The battery simulation unit 230 programmatically simulates a load that consumes power. The load simulated by the battery simulation unit 230 can be variously changed according to the setting of the manager.

The measuring unit 250 measures at least one of an input current characteristic, an input voltage characteristic, an output current characteristic, an output voltage characteristic, a frequency characteristic, an active power characteristic, and a relay trip output characteristic of the EES 10 . The current characteristic or the voltage characteristic may include information derived from the magnitude of the current or the voltage, such as the time taken to reach the second current or the second voltage from the first current or the first voltage as well as the magnitude of the current or voltage itself .

The storage unit 290 stores a test sequence 292 corresponding to a predetermined test item. Here, the 'test sequence' refers to a set value of the first power to be output by the power system simulator 210 and a second power to be consumed by the battery simulator 230 during a predetermined test item, Quot; file " or " document " For example, the test sequence 292 sets the magnitude of the first power to be output by the power system simulator 210 to 3 kV after 2 seconds from the start of a predetermined test item, and again 2 seconds after the power system simulator 210 may set the magnitude of the first power to be output to 1 kV.

Further, the storage unit 290 may further store an evaluation sequence 294 corresponding to a predetermined test item. Here, the 'evaluation sequence' refers to a file or a document including information on the type of data to be measured by the measuring unit 250 and the time at which data is measured after the start of the test, during the progress of a predetermined test item.

The monitoring unit 270 can proceed with the test based on the test sequence 292 corresponding to the predetermined test item. That is, the monitoring unit 270 controls the magnitude of the output power of the power system simulator 210 and the power consumption of the battery simulator 230 according to the set value included in the test sequence 292.

In addition, the monitoring unit 270 evaluates the performance of the EES 10 based on the data measured according to the evaluation sequence 294 corresponding to a predetermined test item.

The monitoring unit 270 sends a control command according to the test sequence 292 and the evaluation sequence 294 to the power system simulation unit 210, the battery simulation unit 230 and the measurement unit 250 through an API (application program interface) .

The monitoring unit 270 can receive any one of various kinds of test items for evaluating the performance of the EES 10 from an administrator or an administrator terminal before starting the test of the EES 10. Test items for evaluating the performance of the EES 10 may include, for example, a protective function test, an external accident test, a normal characteristic test, an insulation performance test, a transient response characteristic test, But is not limited thereto.

The monitoring unit 270 acquires the test sequence 292 corresponding to the inputted test item from the storage unit 290 and conducts the test according to the obtained test sequence 292. [

The evaluation sequence 294 may include preset reference data corresponding to each test item. The monitoring unit 270 may compare the measured data according to the evaluation sequence 294 with the reference data stored in the evaluation sequence 294 to determine the performance of the EES 10. [ Specifically, the monitoring unit 270 monitors the reference input current characteristics, the reference input voltage characteristics, the reference output current characteristics, the reference output voltage characteristics, the reference frequency characteristics, the reference effective power characteristics, and the reference relay trip output And at least one of the input current characteristics, the input voltage characteristics, the output current characteristics, the output voltage characteristics, the frequency characteristics, the effective power characteristics, and the relay trip output characteristics measured by the measurement unit 250 The performance of the EES 10 can be evaluated by comparing the data. For example, the monitoring unit 270 may determine that the performance of the EES 10 conforms to the standard if the measured current value is within a predetermined error range from the preset reference current value.

In the following, an exemplary content that may be included in the test sequence 292 and the evaluation sequence 294 corresponding to the AC voltage follow range test will be described when the AC voltage follow range test is selected as the predetermined test item.

The test sequence 292 controls the output power of the initial power system simulation unit 210 and the power consumption of the battery simulation unit 230 under the rated condition of the EES 10 and then the output power of the power system simulation unit 210 May be set to increase by 10% or decrease by 10% with a rate of change of 1% per second.

The evaluation sequence 294 includes an output sequence of the EES 10 when the output power of the power system simulation unit 210 and the power consumption of the battery simulation unit 230 are controlled under the rated condition of the EES 10, And to measure the output voltage, the current distortion factor, and the power factor of the EES 10 whenever the output power of the power system simulator 210 is changed by 1%.

The evaluation sequence 294 may be set such that the performance of the EES 10 conforms to the specification when the total distortion factor of the output current of the EES 10 is within 5% and the output power factor is 0.95 or more.

The monitoring unit 270 controls the output power of the power system simulation unit 210 and the power consumption of the battery simulating unit 230 according to the test sequence 292 and controls the measuring unit 250 in accordance with the evaluation sequence 294. [ To measure each data. The monitoring unit 270 can evaluate the performance of the EES 10 by comparing the reference data included in the evaluation sequence 294 with the data measured by the measuring unit 250. [

Meanwhile, the monitoring unit 270 may output the performance evaluation result of the EES 10. For example, the monitoring unit 270 may output the performance evaluation result of the EES 10 through output means such as a monitor, a printer, and a speaker.

3 is a flowchart showing a performance evaluation method according to another embodiment of the present invention. Referring to FIG. 3, a performance evaluation method according to another embodiment of the present invention is comprised of steps that are processed in a time-series manner in the performance evaluation system 200 shown in FIG. Therefore, it is understood that the contents described above with respect to the performance evaluation system 200 shown in FIG. 2 apply to the performance evaluation method of FIG. 3, even if omitted from the following description.

In step S310, the monitoring unit 270 acquires a test sequence 292 corresponding to a predetermined test item. The monitoring unit 270 can further acquire the evaluation sequence 294 corresponding to the predetermined test item. In addition, the monitoring unit 270 may receive a selection of a plurality of test items from an administrator or an administrator terminal.

In step S320, the monitoring unit 270 controls the magnitude of the output power of the power system simulator 210 and the power consumption of the battery simulator 230, based on the test sequence 292. [

In step S330, the power system simulation unit 210 outputs the first power to the EES 10 according to the magnitude of the output power controlled by the monitoring unit 270. [

In step S340, the battery simulation unit 230 consumes the second power output from the EES 10 according to the magnitude of the power consumption controlled by the monitoring unit 270. [

In step S350, the monitoring unit 270 determines whether at least one of the input current characteristic, the input voltage characteristic, the output current characteristic, the output voltage characteristic, the frequency characteristic, the active power characteristic, and the relay trip output characteristic measured by the measurement unit 250 And evaluates the performance of the EES 10 based on the data. The monitoring unit 270 can control the measuring unit 250 according to the evaluation sequence 294 to control the type of data measured by the measuring unit 250 and the time point at which the data is measured.

The monitoring unit 270 monitors at least one of the reference input current characteristics, the reference input voltage characteristics, the reference output current characteristics, the reference output voltage characteristics, the reference frequency characteristics, the reference active power characteristics, and the reference relay trip output characteristics stored in the evaluation sequence 294 And the data of at least one of the input current characteristic, the input voltage characteristic, the output current characteristic, the output voltage characteristic, the frequency characteristic, the active power characteristic, and the relay trip output characteristic measured by the measuring unit 250 The performance of the EES 10 can be evaluated.

The system and method for performance evaluation of the EES 10 according to an embodiment of the present invention can evaluate the performance of the EES 10 simply and objectively.

The above-described embodiments of the present invention can be embodied in a general-purpose digital computer that can be embodied as a program that can be executed by a computer and operates the program using a computer-readable recording medium.

The computer readable recording medium may be a magnetic storage medium such as a ROM, a floppy disk, a hard disk, etc., an optical reading medium such as a CD-ROM or a DVD and a carrier wave such as the Internet Lt; / RTI > transmission).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

200: Performance evaluation system
210: Power system simulation unit
230: Battery simulator
250:
270:
290:

Claims (13)

A system for evaluating the performance of an electric energy storage system (EES)
A power system simulator for outputting the first power to the EES;
A battery simulator for consuming a second power output from the EES;
A measuring unit for measuring data on at least one of an input current characteristic, an input voltage characteristic, an output current characteristic, an output voltage characteristic, a frequency characteristic, an active power characteristic, and a relay trip output characteristic of the EES;
A storage unit for storing a test sequence corresponding to a predetermined test item; And
And a monitoring unit for controlling the magnitude of the output power of the power system simulation unit and the power consumption of the battery simulation unit according to the test sequence and evaluating the performance of the EES based on the data measured by the measurement unit Performance evaluation system.
The method according to claim 1,
The test sequence includes:
Information about a magnitude of an output power of the power system simulation unit to be set according to a time, and information about a magnitude of power consumption of the battery simulator.
The method according to claim 1,
Wherein,
Further storing an evaluation sequence corresponding to the predetermined test item,
The monitoring unit,
And evaluates the performance of the EES based on the data measured by the measuring unit in accordance with the evaluation sequence.
The method of claim 3,
The evaluation sequence includes:
A type of data to be measured by the measuring unit, and a time point at which the data is to be measured after the start of the test.
The method according to claim 1,
The monitoring unit,
And outputs the performance evaluation result of the EES.
The method according to claim 1,
The monitoring unit,
And said predetermined test item is input from an administrator or an administrator terminal.
A method for evaluating performance of an electric energy storage system (EES) by a performance evaluation system,
Controlling the magnitude of the output power of the power system simulation unit and the magnitude of the power consumption of the battery simulation unit according to a test sequence corresponding to a predetermined test item;
Outputting a first power to the EES according to a magnitude of the controlled output power;
The battery simulation unit consuming a second power output from the EES according to the magnitude of the controlled power consumption; And
And evaluating the performance of the EES based on the data measured by the monitoring section by the monitoring section.
8. The method of claim 7,
The test sequence includes:
Information about a magnitude of an output power of the power system simulation unit to be set according to a time, and information on a magnitude of power consumption of the battery simulator.
8. The method of claim 7,
Wherein the evaluating comprises:
And evaluating the performance of the EES based on data measured by the measuring unit according to an evaluation sequence corresponding to the predetermined test item.
10. The method of claim 9,
The evaluation sequence includes:
A type of data to be measured by the measuring unit, and a time point at which the data is to be measured after the start of the test.
8. The method of claim 7,
The performance evaluation method includes:
And the monitoring unit outputs the performance evaluation result of the EES.
8. The method of claim 7,
Wherein the controlling comprises:
Receiving the predetermined test item from an administrator or an administrator terminal; And
And acquiring the test sequence corresponding to the input test item.
A method for evaluating the performance of an electric energy storage system (EES)
Causing a first power to be output from the power system simulation unit to the EES by obtaining a test sequence corresponding to a predetermined test item and controlling the magnitude of the output power of the power system simulation unit based on the obtained test sequence;
Controlling a magnitude of power consumption of the battery simulation unit based on the obtained test sequence so that a second power output from the EES is consumed by the battery simulation unit; And
And evaluating the performance of the EES based on data measured by the metering unit.
KR1020150031054A 2015-03-05 2015-03-05 System and method for assessing performance of electric energy storage system by using test sequence KR20160107782A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101986217B1 (en) * 2018-10-25 2019-06-07 한국에너지기술연구원 Movable test device for electric charging system
KR20210071143A (en) * 2019-12-05 2021-06-16 재단법인 한국화학융합시험연구원 Duty cycle efficiency preformance tester of energy storage system and method thereof
KR20210080060A (en) * 2019-12-20 2021-06-30 (주)엘탑 System for performance verication and predictive maintenance of ess
CN113567876A (en) * 2020-04-28 2021-10-29 北京新能源汽车股份有限公司 Power supply testing method, device and equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101986217B1 (en) * 2018-10-25 2019-06-07 한국에너지기술연구원 Movable test device for electric charging system
KR20210071143A (en) * 2019-12-05 2021-06-16 재단법인 한국화학융합시험연구원 Duty cycle efficiency preformance tester of energy storage system and method thereof
KR20210080060A (en) * 2019-12-20 2021-06-30 (주)엘탑 System for performance verication and predictive maintenance of ess
CN113567876A (en) * 2020-04-28 2021-10-29 北京新能源汽车股份有限公司 Power supply testing method, device and equipment

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