KR101103505B1 - Automatic discharge system for a storage battery and charger and method of the same - Google Patents

Abstract

PURPOSE: A storage battery and battery charger automatic discharge system and method are provided to a test according to item en bloc by automatically executing a rectifier for a non-interrupting electric source system of atomic power and heat power plants, the automatic discharge and the performance test of a storage battery. CONSTITUTION: A storage battery and battery charger automatic discharge system(200) automatically controls a rectifier for a non-interrupting electric source system and the automatic discharge and the performance test of a storage battery to a constant current method through a PLC(Power line communication) program. An operation monitoring device(100) controls an operation of the storage battery and battery charger automatic discharge system in a remote site and executes the automatic discharge and the performance test of a testing device. The operation monitoring device monitors an operation state of the testing device on a real time and outputs a recording paper.

Description

Automatic Discharge System for A Storage Battery and Charger and Method of The Same}

The present invention relates to a battery and charger automatic discharge system and method thereof, and more particularly, to perform uninterruptible power supply rectifier, power storage, and design capacity test of the uninterruptible power system power supply to the power equipment of nuclear power plant It relates to a battery and charger automatic discharge system and a method thereof.

Conventionally, the performance test and design capacity test of the uninterruptible power system rectifier and storage battery supplying power to the nuclear power plant of the nuclear power plant was repeated manually. Therefore, there was a difficulty in performing various tests for each item according to the test equipment.

The technical problem to be achieved by the present invention to solve the above problems, the automatic rectification of the uninterruptible power system for supplying power to the power equipment of nuclear / thermal power plant, the automatic discharge of the storage battery and the performance test by performing the test automatically To provide a battery and charger automatic discharge system and its method.

In addition, another technical problem to be achieved by the present invention is to provide a battery and charger automatic discharge system and method that can perform the performance test and design capacity test of the uninterruptible power system rectifier of the nuclear / thermal power plant, by item. There is.

In addition, another technical problem to be achieved by the present invention is to provide a battery and charger automatic discharge system and method for performing the usability test and performance test applied to the voltage of DC 48V, 250V, 400V combined .

In addition, another technical problem to be achieved by the present invention is to provide a battery and charger automatic discharge system and method capable of continuous and sequential testing at a predetermined current value and time.

In addition, another technical problem to be achieved by the present invention is to propose a battery and charger automatic discharge system and method that can perform a variety of tests at the same time by selecting a test device name.

In addition, another technical problem to be achieved by the present invention is to propose a battery and charger automatic discharge system and method having a protection device so as not to affect the equipment under test and the power plant system due to failure.

The problem of the present invention is not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

As a means for solving the above technical problem, the battery and charger automatic discharge system of the present invention is the automatic discharge and performance test of the uninterruptible power system rectifier, storage battery (test device) for supplying power to the power equipment of nuclear / thermal power plants Battery and charger automatic discharge device 200 to perform the automatic control by the constant current method through a PLC program; And remotely controlling the operation of the battery and charger automatic discharge device 200 to perform the automatic discharge and performance test of the test device, monitor the operating state of the test device in real time, output a recording sheet, and test Remote operation monitoring device 100 that can store data; including, The remote operation monitoring device 100 includes a remote PC 110 and a printer 120, the battery and charger automatic discharge device 200 A local PC 210 in communication with the remote PC; Output automatic adjustment device for supplying a setting current (voltage) to the test device by a command input through the local PC 210 to perform automatic discharge and performance test, but automatically stops the test when automatic control is disabled. A main control panel 220 including an emergency stop button, an alarm panel and a manual operation panel for emergency stop during an emergency during the test; A plurality of resistors 241 and 242 configured for each capacity of the test apparatus, a temperature sensor 243 installed at an exhaust part of the resistor to measure temperature, and a cooling fan and a cooling fan motor 244 and 245 for cooling the resistor. And control the load current supplied to the test apparatus by the main control panel 220 to be maintained within the set current range, a large capacity resistor is disposed at the bottom, and a low capacity resistor is disposed toward the top. A resistance box 240 for installing forced cooling fan 244 under the resistors 241 and 242 to be forced air; And a power supply installed between the main control panel 220 and the resistance box 240 and supplied to the test apparatus when the voltage supplied to the test apparatus falls below a specified value, the test time is exceeded, or the temperature limit is exceeded. Switchgear, including a magnetic contactor and an overload protection device, an operation switch, including an opening and closing switch that can open and close the rated current continuously, and an opening and closing device having an integrated status indicator indicating the operating state of the switching device ( 230).

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The resistance box 240 is configured such that a buzzer sounds when the temperature limit is exceeded by the temperature sensor and the resistor is tripped when the temperature limit is exceeded by the temperature sensor. The cooling fan motor includes an overload encoder and an alarm. The disposed resistive element uses nichrome wire.

The opening and closing device 230 includes an opening and closing switch for continuously opening and closing the rated current, and is integrally provided with a status indicator for displaying the operating state of the opening and closing device.

The remote operation monitoring apparatus 100 is capable of constant current control during automatic discharge and performance testing of the test apparatus, monitors test data including output terminal voltage and current, outputs recording paper, and stores test data on a hard disk. And download it as an Excel file.

The battery and charger automatic discharge device 200 is configured in the form of a panel, the voltmeter and ammeter, printer and recording paper support, automatic and manual selection switch, emergency so as to visually check all the conditions related to the battery and charger test on the front panel Related equipment including stop button, resistor thermometer, panel internal / external thermometer, switchgear operation status indicator, breaker operation status indicator, and remote operation monitoring communication terminal.

In addition, as another means for solving the above technical problem, the battery and charger automatic discharge method according to the present invention, (a) operating the cooling fan of the resistor; (b) selecting a test device for a storage battery or a charger, an operation mode of a performance test or a use test, and a test device name; (c) supplying a load current to the test apparatus when a command of the discharge test is input; (d) controlling the load current by turning on / off a resistor so that the load current supplied to the test device is maintained at the set current, and having a plurality of resistors configured for each capacity of the test device, Automatically controlling the load current in a constant current manner through a PLC program; (e) storing the test data including the voltage, current, and time when the load current is applied within the set current range, and performing steps (b) to (d) again if not applied within the set current range; ; And (f) shutting off the power supplied to the test device when the voltage supplied to the test device drops below a prescribed value or exceeds the test time, and automatically discharges the power if the power is not cut off. Are controlled by PLC program automatically.

According to the present invention, the automatic discharge and performance test of the uninterruptible power system rectifier of the nuclear power plant / power plant to be periodically performed, and the storage battery can be programmed to perform the test automatically, and the tests can be carried out collectively for each item. . In addition, the performance test of the rectifier for 48V, 250V, and the usability test and performance test of the storage battery for 48V, 250V, 400V can be performed. In addition, it is easy to operate and control with the function to perform the performance test and design capacity test of rectifier and capacitor by item. In addition, three voltages (48V, 250V, 400V) can be used to perform the test applied to the corresponding voltage, and the continuous and sequential tests are possible with the preset current value and time.

The effects of the present invention are not limited to those mentioned above, and other effects that are not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a block diagram of a battery and charger automatic discharge system according to a preferred embodiment of the present invention
2 to 5 is a view showing a panel state of the battery and charger automatic discharge device according to the present invention,
2 is a view showing a front panel;
3 is a view showing a cooling fan inside the panel,
4 is a panel internal configuration diagram,
5 is a view showing a rear panel.
6A and 6B are flowcharts illustrating operations for automatically discharging a battery and a charger according to a preferred embodiment of the present invention.
7 is the initial screen of the battery and charger automatic discharge program
8 is a screen showing the test data in a diagram and numerical value
9 is a battery and charger automatic discharge simulator screen
10 is a test reference data setting screen
11 is a manual load and sequence control screen
12 is a test result data output screen

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Embodiment of a battery and charger automatic discharge system

1 is a block diagram of a battery and charger automatic discharge system according to a preferred embodiment of the present invention.

As shown in FIG. 1, the battery and charger automatic discharge system includes a remote PC 110, a remote operation monitoring device 100 including a printer 120, a local PC 210, a main control panel 220, It is composed of a switchgear and a status indicator 230, a storage battery including a resistance box 240 and a charger automatic discharge device (200).

First, the remote operation monitoring device 100 controls the operation of the battery and charger automatic discharge device 200 from a remote location, the uninterruptible power system storage battery or charger for supplying power to the power equipment of nuclear / thermal power plants (hereinafter referred to as It automatically performs the automatic discharge and performance test of the "test apparatus", and monitors the operating state of the test apparatus in real time. The remote operation monitoring apparatus 100 is capable of constant current control during automatic discharge and performance testing of the test apparatus, monitors test data including output terminal voltage and current, outputs recording paper, and stores test data on a hard disk. And it is configured to download as an Excel file.

The battery and charger automatic discharge device 200 is connected to the remote operation monitoring device 100 by a communication network, and for this purpose, includes a LAN cable, a signal amplifier, a communication hub, and the like. The battery and charger automatic discharge device 200 automatically performs an automatic discharge and performance test of an uninterruptible power system rectifier and a storage battery (test device) for supplying power to a power facility of a nuclear power plant. The battery and charger automatic discharging device 200 automatically controls the performance test and usability test of the rated voltage DC 400V, 250V, 48V capacitor and the charger load test current through a PLC in a constant current manner. In addition, it is possible to test the battery and the charger by automatic control and manual operation, to visually check the test state and to store the test data. At this time, the exhaust temperature at the rated load test is preferably 120 ℃ or less (including the ambient temperature).

The battery and charger automatic discharge device 200 is a local PC 210, the main control panel 220, the switchgear and status indicator 230, the resistance box 240, connected in communication with the remote PC, as shown in FIG. It includes.

Here, the main control panel 220 supplies a set current (voltage) to the test apparatus by a command input through the local PC 210 to load the resistance box 240 to perform automatic discharge and performance test. Control and cut off the current. It includes an output automatic adjustment device for automatically stopping the test when the automatic control is impossible, an emergency stop button for emergency stop in case of emergency during the test, an alarm panel and a manual operation panel. The main control panel 220 should automatically control the load test current of the DC 400V, 250V, 48V battery (Duty Cycle Test) and usability test (Service Test) and the charger load test current through a PLC. In addition, it should be possible to complete the charger and battery test by manual operation when automatic control is not available.

The switchgear and status indicator 230 is installed between the main control panel 220 and the resistance box 240, the voltage supplied to the test device drops below the specified value, the test time exceeds or exceeds the temperature limit Cut off the power supply to the test apparatus. The opening and closing device 230 includes a magnetic contactor, an overload protection device, an operation switch, and includes an opening and closing switch capable of continuously opening and closing a rated current. The opening and closing device of the resistor should be a structure that can safely open and close the rated current continuously, it is possible to display the operation state of the switch by integrating the open and close switch and the display lamp.

The resistor box 240 includes a plurality of resistors 241 and 242 configured for each capacity of the test apparatus, a temperature sensor 243 installed at an exhaust part of the resistors 241 and 242 to measure temperature, and the resistors 241 and 242. A cooling fan and cooling fan motors 244 and 245 for cooling are included, and the load current supplied to the test apparatus by the main control panel 220 is controlled to be maintained within a set current range. The resistance box 240 is configured such that the buzzer sounds when the temperature sensor 243 exceeds the one-step temperature limit and the resistor trips when the temperature limit exceeds the two-step temperature limit. Here, the cooling fan motor 245 includes an overload encoder and an alarm, and uses a dry cooling method, an upward forced air cooling, and a three-phase 480 VAC. The resistive elements disposed on the resistors 241 and 242 are made of a material (for example, nichrome wire) having a high resistivity (100 µΩ · cm or more), a small appearance and weight, and a small change rate of resistance due to temperature change. It is preferable.

A large capacity resistor is disposed below the resistors 241 and 242, and a low capacity resistor is disposed toward the top. Load resistance should be installed to resist high temperature and minimize heat generation, and resistance value fluctuation should be within tolerance. In addition, it should not affect the operation of the internal circuits and equipment by the heat generated by the resistance. The insulation insulator used in the assembly of the resistance is made of a material having high flame resistance and moisture resistance. And, it is installed in a cabinet form by dividing by capacity for easy maintenance. In addition, a flame-retardant cable and a bus bar (BUS-BAR) using a sufficient current capacity are used between the resistor and the resistor and between the resistor and the connection terminal. In addition, each terminal part of the internal wiring shall not be loosened or released by impact, the flow of the wiring and the terminal part shall not affect the insulation strength, and the wiring number of all control circuits shall be marked with the wiring number.

The cooling fan 244 is installed below the resistors 241 and 242 so as to be forced upward airflow. Especially, it is designed and manufactured to minimize the change of discharge test current by temperature. It also shuts off the load and generates an alarm in the event of a cooling fan failure.

The temperature sensor 243 is installed on top of the resistors 241 and 242 so that the temperature can be displayed on the front of the panel, the buzzer rings when the first temperature limit is exceeded, and the resistor trips when the second temperature limit is exceeded. Be sure to

The battery and charger automatic discharge device 200 should be equipped with the following protection device so as not to affect the equipment under test and the power plant system due to a failure.

First, the cooling fan motor 245, the heater must have an overload protection device for each unit and combination. An output stage breaker shall be provided to automatically terminate the test in the event of automatic panel control failure, and breakers over 30A shall be equipped with earth protection. In addition, the load shall be cut off automatically when the set test time (or terminal voltage) is completed. If an emergency occurs during the test, an emergency stop switch shall be provided for emergency stop.

Example of panel configuration of battery and charger automatic discharge device

2 to 5 is a view showing a panel of the battery and charger automatic discharge device according to the present invention, Figure 2 is a view showing the front panel, Figure 3 is a view showing a cooling fan inside the panel, Figure 4 5 is a diagram illustrating a panel internal configuration, and FIG. 5 is a diagram illustrating a rear surface of the panel.

The battery and charger automatic discharge device 200 is configured in the form of a panel, a voltmeter (1), ammeter (2), resistor thermometer (3), so that all the state related to the battery and charger test on the front panel can be visually checked; Panel inside / outside thermometer (4), various operation switches (5), switchgear operation status indicator (6), circuit breaker operation status indicator (7), panel PC (8), printer and recording paper support, remote operation monitoring communication terminal, etc. Equipped. Here, the operation switch 5 includes an emergency stop button, a fan ON / OFF button, an automatic and manual selection switch, and the like. The panel should be provided with a grounding booth and provided with a grounding wire so that the panel enclosure can be grounded.

A cooling fan 244 is installed below the resistors 241 and 242 installed inside the panel, and when the cooling fan fails, the load is cut off and an alarm is generated. In addition, a temperature sensor 243 is installed on the upper part of the resistors 241 and 242 to display the temperature on the front of the panel, and a buzzer sounds when the first step temperature limit is exceeded, and the resistor trips when the second step temperature limit is exceeded. )

The battery and charger automatic discharging device 200 should have sufficient durability electrically and mechanically, and should be manufactured in a structure that is safe and easy to replace or repair the resistance and the magnetic contactor. All parts that need to be replaced must be compatible with each part or group of parts if necessary, and the replacement must be of such a structure that the device is easily removable. The battery and charger automatic discharge device 200 is of an indoor type, and the air flow up and down to facilitate forced ventilation.

The air inlet of the battery and charger automatic discharge device 200 is a smooth air distribution, the lower portion is properly protected to prevent the intrusion of dust, the upper portion is a waterproof cover to prevent foreign substances from entering when the resistor is not used Attach.

The current control range of the battery and charger automatic discharge device 200 is as follows.

-For rated voltage DC 400V: 1 (A) ~ 1800 (A)

-For rated voltage DC 250V: 1 (A) ~ 1000 (A)

-For rated voltage DC 48V: 1 (A) ~ 500 (A)

The current control shall be continuously input without interruption of the test power supply (DC) in the operating state, and shall be able to adjust the automatic constant current value according to the test procedure at least 1A unit. The rated operating time shall be capable of continuous operation at 125% of the rated capacity (A).

By the above configuration, the battery and charger automatic discharge device 200 can perform the performance test of the rectifier for 48V, 250V, the usability test and performance test of the storage battery for 48V, 250V, 400V. To this end, the battery and charger automatic discharge device 200 should be easy to operate and control as a function that can perform the performance test and design capacity test of the rectifier, the capacitor collectively by item. In addition, three voltages (48V, 250V, 400V) can be used to perform a test applied to the corresponding voltage, and a continuous and sequential test can be performed at a predetermined current value and time.

Embodiment of a battery and charger automatic discharge method

6A and 6B illustrate an operation flowchart of a method of automatically discharging a battery and a charger according to an exemplary embodiment of the present invention, which will be described with reference to FIG. 1.

First, the cooling fan of the resistor is operated (step S100).

After that, the test voltage (48V, 220V, 440V), the test device of the storage battery or charger, the operation mode of the performance test or use test, and the name of the test equipment (for example, A, B, C, etc.) are selected (step S110).

After that, when a command of the discharge test is input (step S120), a load current is supplied to the test apparatus (step S130).

Thereafter, the load current is controlled by turning the resistor on / off so that the load current supplied to the test apparatus is maintained at the set current (step S140).

Thereafter, if the load current is applied within the set current range (step S150), the test data including the voltage, current, and time is stored (step S160), and if the load current is not applied within the set current range, the test is performed again.

Finally, when the voltage supplied to the test device falls below a prescribed value or the test time is exceeded (step S170), the power supply to the test device is cut off (step S180), and the power is automatically discharged if the power is not cut off.

Example of a battery and charger automatic discharge program screen

7 is an initial screen of the battery and charger automatic discharge program, Figure 8 is a screen showing the test data in a diagram and numerical value, Figure 9 is a battery and charger automatic discharge simulator screen, Figure 10 is a test reference data setting screen, 11 is a manual load and sequence control screen, and FIG. 12 is a test result data output screen.

The battery and charger automatic discharge system and the method of the present invention configured as described above automatically perform the test by programming the uninterruptible power system rectifier for supplying power to the power equipment of nuclear / thermal power plants, the automatic discharge and performance test of the battery. By doing so, the technical problem of the present invention can be solved.

Preferred embodiments of the present invention described above are disclosed to solve the technical problem, and those skilled in the art to which the present invention pertains (man skilled in the art) various modifications, changes, additions, etc. within the spirit and scope of the present invention. It will be possible to, and such modifications, changes, etc. will be considered to be within the scope of the following claims.

1: voltmeter 2: ammeter
3: Resistor Thermometer 4: Panel In / Out Thermometer
5: operation switch
6: switch operation status indicator
7: Breaker operation status indicator 8: Panel PC
9: cabinet handle 10: cooling fan (244)
11: air press switch
100: remote operation monitoring device 110: remote PC
120: printer
200: battery and charger automatic discharge device
210: local PC 220: main control panel
230: switchgear and status indicator 240: resistance box
241: first resistor 242: nth resistor
243: temperature sensor 244: cooling fan
245: cooling fan electric motor

Claims (8)

Automatic discharge device for storage battery and charger which performs automatic discharge and performance test of uninterruptible power system rectifier and storage battery (test device) which supplies power to nuclear power / heat power plant power supply by constant current method through PLC program ; And
Control the operation of the battery and charger automatic discharge device 200 from a remote location to perform automatic discharge and performance test of the test device, monitor the operating state of the test device in real time, output recording paper, test data Remote operation monitoring device 100 that can store; including;
The remote operation monitoring apparatus 100 includes a remote PC 110 and a printer 120,
The battery and charger automatic discharge device 200 includes a local PC 210 connected in communication with the remote PC; Output automatic adjustment device for supplying a setting current (voltage) to the test device by a command input through the local PC 210 to perform automatic discharge and performance test, but automatically stops the test when automatic control is disabled. A main control panel 220 including an emergency stop button, an alarm panel and a manual operation panel for emergency stop during an emergency during the test; A plurality of resistors 241 and 242 configured for each capacity of the test apparatus, a temperature sensor 243 installed at an exhaust part of the resistor to measure temperature, and a cooling fan and a cooling fan motor 244 and 245 for cooling the resistor. And control the load current supplied to the test apparatus by the main control panel 220 to be maintained within the set current range, a large capacity resistor is disposed at the bottom, and a low capacity resistor is disposed toward the top. A resistance box 240 for installing forced cooling fan 244 under the resistors 241 and 242 to be forced air; And a power supply installed between the main control panel 220 and the resistance box 240 and supplied to the test apparatus when the voltage supplied to the test apparatus falls below a specified value, the test time is exceeded, or the temperature limit is exceeded. Switchgear, including a magnetic contactor and an overload protection device, an operation switch, including an opening and closing switch that can open and close the rated current continuously, and an opening and closing device having an integrated status indicator indicating the operating state of the switching device ( 230);
Battery and charger automatic discharge system comprising a.
The method of claim 1,
The resistance box 240 is configured such that the buzzer sounds when the temperature limit is exceeded by the temperature sensor in one step, and the resistor is tripped when the temperature limit is exceeded in the second step.
The cooling fan motor includes an overload encoder, an alarm,
The resistor element disposed in the resistor is a battery and charger automatic discharge system using a nichrome wire.
According to claim 1, wherein the remote operation monitoring device 100:
Capable of controlling constant current during automatic discharge and performance test of the test device, monitoring test data including output terminal voltage and current, outputting recording paper, storing test data on hard disk and downloading to Excel file Automatic discharge system.
The method of claim 1, wherein the battery and charger automatic discharge device 200 is:
It is panel-shaped and features a voltmeter and ammeter, printer and recorder base, automatic and manual selector switches, emergency stop button, resistor thermometer, and internal / external thermometers for visual inspection of all conditions related to battery and charger testing on the front of the panel. Automatic discharge system for storage battery and charger with associated devices including switchgear operation status indicator, circuit breaker operation status indicator and remote operation monitoring communication terminal.
(a) operating a cooling fan of the resistor;
(b) selecting a test device for a storage battery or a charger, an operation mode of a performance test or a use test, and a test device name;
(c) supplying a load current to the test apparatus when a command of the discharge test is input;
(d) controlling the load current by turning on / off a resistor so that the load current supplied to the test device is maintained at the set current, and having a plurality of resistors configured for each capacity of the test device, Automatically controlling the load current in a constant current manner through a PLC program;
(e) storing the test data including the voltage, current, and time when the load current is applied within the set current range, and performing steps (b) to (d) again if not applied within the set current range; ; And
(f) shutting off the power supplied to the test device when the voltage supplied to the test device drops below a specified value or exceeds the test time, and automatically discharges the power if the power is not cut off;
The battery and charger automatic discharge method performing the steps while automatically controlling through a PLC program.
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