KR101281776B1 - System and Method for HVDC Optical Card Test - Google Patents

Abstract

An HVDC light control card test system and method is disclosed. The HVDC optical control card test system detects the temperature of the thyristor according to the current magnitude of the thyristor valve, converts the thyristor temperature information into the first electrical pulse signal, and adjusts the first electrical pulse signal to the high frequency precision pulse signal. Converts the optical signal into an optical signal and transmits it to the optical control card and receives the optical signal output through the optical control card, converts it into a second electrical pulse signal, and compares the second electrical pulse signal through the OR gate. Receiving part inspection equipment for determining errors or normals.

Description

System and Method for HVDC Optical Card Test

The present invention relates to a high voltage direct current (HVDC) light control card test system and method.

As a background art of the invention, there is a patent document about a thyristor deterioration diagnosis device, and the change in electrical characteristics according to the aging of a thyristor, which is a power device widely used in the industrial field, is shaped, and the thyristor according to this shaped characteristic It is disclosed to easily diagnose whether the normal operation and the degree of deterioration.

KR 1999-0047685 A 1999. 07. 05

In order to prevent the failure of the HVDC optical control cards, the HVDC optical control card test system further improves and improves the quality while reducing the inspection time by inspecting the internal defective parts and the optical transmission / receiving module parts interfaced by the optical control cards. Is to suggest.

According to one aspect of the present invention, a high voltage direct current (HVDC) optical control card test system for performing a check of a plurality of optical control cards installed in a control panel is disclosed.

HVDC optical control card test system according to an embodiment of the present invention detects the temperature of the thyristor according to the current size of the thyristor valve, converts the temperature information of the thyristor to the first electrical pulse signal, high-frequency precision pulse signal Converts the first electrical pulse signal adjusted to the optical signal into an optical signal and transmits the optical signal to the optical control card, and receives the optical signal output through the optical control card and converts the optical signal into a second electrical pulse signal. And a receiving part check device for comparing the second electrical pulse signal through an OR gate to determine an error or normal.

The thyristor temperature sensor for detecting the temperature of the thyristor according to the current size of the thyristor valve, converting the temperature information of the thyristor to the first electrical pulse signal, A pulse adjusting unit for adjusting an electrical pulse signal to a high frequency precision pulse signal, a transmitter for converting the first electrical pulse signal into an optical signal and outputting the optical signal, and transmitting the first electrical pulse signal to the transmitter, It includes a light output control unit for changing the magnitude of the input current to adjust the light output of the transmitter.

Here, the transmitting part inspection equipment further comprises a mode selection unit for receiving a selection of the check selection mode for checking the line of the optical control card, the check selection mode includes an optical firing pulse signal line and a databack signal line do.

Here, the transmission part check equipment is a transmission power unit for supplying power of the transmission part check equipment, a transmission memory input unit for inputting a program for the operation control algorithm of the transmission part inspection equipment, the transmission status to display the pulse signal status to be sent The display unit and a transmission control unit for controlling the operation of the transmission unit check device in accordance with the program.

Here, the receiving portion checker is a pulse receiving unit for receiving the optical signal output via the optical control card as a 12 line optical signal, and converts the received optical signal into a second electrical pulse signal, the second electrical A pulse comparison unit for comparing and outputting a pulse signal through an OR gate and the second electric pulse signal compared through the OR gate are performed through a control count to perform synchronization verification on a transmission and reception signal, and during a predetermined period. And a reception controller which checks a received pulse signal a predetermined number of times and determines a normal or error.

Here, the receiving part checking device displays a calling power supply unit for supplying power to the receiving part checking device, a calling memory input part to which a program for an operation control algorithm of the receiving part checking device is input, and the determination state of the normal or the error. It further comprises a reception status display unit.

According to another aspect of the present invention, an HVDC optical control card test method of an HVDC optical control card test system for performing inspection of a plurality of optical control cards installed in a control panel is disclosed.

In the HVDC optical control card test method according to an embodiment of the present invention, detecting the temperature of the thyristor according to the current size of the thyristor valve, converting the temperature information of the thyristor to the first electrical pulse signal, high frequency precision Converting the first electrical pulse signal adjusted to a pulse signal into an optical signal and transmitting the optical signal to the optical control card; receiving and converting the optical signal output through the optical control card into a second electrical pulse signal And comparing the second electrical pulse signal through an OR gate to determine an error or normal.

The determining of the error or normal may include performing synchronization verification on the transmission and reception signals through a control count on the second electrical pulse signal compared through the OR gate, and receiving a pulse signal received during a predetermined period. Check the preset number of times to determine normal or error.

According to another aspect of the present invention, an HVDC optical control card test method of an HVDC optical control card test system for performing inspection of a plurality of optical control cards installed in a control panel is disclosed.

In the HVDC optical control card test method according to an embodiment of the present invention, receiving a check selection mode of a databack signal line, generating a databack pulse signal, and converting the databack pulse signal into an optical signal to control the light. Transmitting to a card, receiving the optical signal output through the optical control card and converting the optical signal into a second electrical pulse signal, and comparing the second electrical pulse signal through an OR gate to determine an error or normality. Steps.

Herein, the databack pulse signal is generated in the same manner as the response signal to which the optical control firing signal calls the thyristor and is fed back.

The present invention can quickly and accurately check not only the defective state of the internal parts of the optical control card but also the optical control card portion that is interfaced with the optical control.

In addition, the present invention can collectively check the entire line of light-related equipment output in the call signal generation step.

In addition, the present invention can be easily carried during the inspection, it is possible to find the defective internal parts of the card without separating the optical control cards individually.

1 is a view showing a control panel installation diagram and installation pictures installed the HVDC optical control card of FIG.
Figure 2 is a schematic diagram illustrating a configuration of the transmission unit check equipment of the HVDC optical control card test system.
Figure 3 is a schematic diagram illustrating the configuration of the receiving portion inspection equipment of the HVDC optical control card test system.
4 and 5 are flowcharts illustrating a HVDC optical control card test method.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, numerals (e.g., first, second, etc.) used in the description of the present invention are merely an identifier for distinguishing one component from another.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the same reference numerals will be used for the same means regardless of the reference numerals in order to facilitate the overall understanding.

1 is a view showing a control panel installation diagram and installation pictures installed the HVDC optical control card of FIG.

Currently, HVDC facilities not only cover 50% of Jeju's power system, but also play a key role in stabilizing Jeju's power system by absorbing failure loads without power failure even in the event of generators dropping or transmission line failures. In the long term, HVDC facilities are expected to be built in North-South power linkage and Northeast Asia. Therefore, the interest in direct current transmission is increasing more than ever before.

In general, the optical control equipment, which is the core control equipment in HVDC facilities such as Jeju and Haenam, is installed on each control panel by combining various optical control cards, and its characteristics operate differently according to the optical signal input. Consists of

In order to check the optical control card installed in the control panel shown in FIG. This type of inspection takes a long time according to the separate removal and installation of the optical control card, and a bad contact may occur to a plurality of connection terminals, which may be caused by the failure of the HVDC installation. In addition, the conventional method is impossible to check the characteristics of the optical control card and the line due to the characteristics of the parts for the optical transmission and reception portions interfaced between the optical control cards.

Hereinafter, the HVDC optical control card test system will be described with reference to FIGS. 2 and 3.

2 is a configuration diagram schematically illustrating the configuration of the transmission unit inspection equipment of the HVDC optical control card test system, and FIG. 3 is a configuration diagram schematically illustrating the configuration of the reception unit inspection equipment of the HVDC optical control card test system.

The HVDC light control card test system includes a transmitter checker 10 and a receiver checker 20.

Referring to FIG. 2, the transmission part checking device 10 includes an outgoing power supply unit 11, an outgoing memory input unit 12, a mode selector 13, an outgoing control unit 14, an outgoing status display unit 15, and a thyristor temperature. Sensor 16, pulse control unit 17, light output control unit 18 and the transmitter 19.

The outgoing power supply unit 11 supplies power to the entire outgoing part check equipment 10.

The outgoing memory input unit 12 is connected to an external computer to perform a function of inputting a program or data. In this case, the program may be a program for an operation control algorithm of the calling part detecting apparatus 10.

The mode selector 13 selects a check selection mode for the interface line to check the line of the HVDC optical control card, generates a pulse generation control signal according to the selected interface line, and transmits the generated signal to the call controller 14. . Here, the interface line includes an optical firing pulse signal line and a databack signal line. The databack signal is a response feedback signal to the optical firing pulse signal.

The transmission control unit 14 controls each component of the transmission part inspection equipment 10 according to the input program (motion control algorithm).

The transmission status display unit 15 displays the pulse signal state and the pulse signal type under the control of the transmission control unit 14.

The thyristor temperature sensor 16 senses the temperature of the thyristor according to the current magnitude of the thyristor valve. The thyristor temperature sensor 16 converts and outputs the thyristor temperature information of the field into an electric pulse signal, and the output electric pulse signal is transmitted to the pulse controller 17.

The pulse controller 17 adjusts the normal normal firing pulse signal and the high frequency precision pulse signal to correspond to the electric pulse signal transmitted from the thyristor temperature sensor 16, and selects the high frequency precision pulse signal to the originating controller 14. To pass. Here, the high frequency precision pulse signal can be checked in the normal normal operation state and the defective state of the internal parts of the optical control card.

The light output adjusting unit 18 transmits an electric pulse signal output from the transmitting control unit 14 to the transmitting unit 19, and at this time, by changing the magnitude of the input current of the transmitting unit 19, The light output can be adjusted.

The transmitter 19 converts the transmitted electric pulse signal into an optical signal and outputs the optical signal.

Referring to FIG. 3, the reception part checking device 20 includes a reception power supply unit 21, a reception memory input unit 22, a reception control unit 23, a reception state display unit 24, a pulse comparison unit 25, and a pulse reception unit ( 26).

The receiving power supply unit 21 supplies power to the entire receiving part check equipment 10.

The receiving memory input unit 22 is connected to an external computer to perform a function of inputting a program or data. Here, the program may be a program for the operation control algorithm of the receiving portion inspection equipment 20.

The pulse receiving unit 26 receives the optical signal transmitted from the transmitting unit inspection equipment 10 via the optical control card as an optical signal of 12 lines, and converts the received optical signal into an electrical pulse signal. Output

The pulse comparator 25 compares the electrical pulse signal transmitted from the pulse receiver 16 and transmits the pulse signal to the reception controller 23. The pulse comparator 25 may compare and output 12 lines of electrical pulse signals through an OR gate circuit.

The reception control unit 23 controls each component of the reception part checking equipment 20 according to the input program (operation control algorithm).

The reception control unit 23 determines the pulse reception state using the electric pulse signal output from the pulse comparison unit 25. For example, the reception control unit 23 performs synchronization verification on the transmission and reception signals through the control count with respect to the electric pulse signals compared through the OR gate, and receives a pulse received for one period (for example, 60 Hz). The signal is checked 120 times in one cycle to determine normal or error.

The reception state display unit 24 displays the pulse reception state under the control of the reception control unit 23.

4 is a flowchart illustrating a HVDC optical control card test method. In FIG. 4, the case where the optical firing pulse signal line is selected from the two check selection modes of the optical firing pulse signal line and the databack signal line will be described.

In step S410, the input connection terminal of the optical control card corresponding to the optical firing pulse signal line and the transmitter 19 of the transmission part check equipment 10 is connected via an optical cable.

In operation S420, when the operating part is applied with the operating power, the transmission part checking device 10 transmits a basic pulse signal according to a predetermined operation control algorithm. At this time, the transmission part check equipment 10 outputs the waveform state of the basic pulse signal to be transmitted to the transmission status display unit 15.

In step S430, the transmission part check equipment 10 generates an electrical pulse signal according to the thyristor temperature.

In step S440, the transmission part check equipment 10 selects a high frequency precision pulse signal adjusted to correspond to the electrical pulse signal.

In step S450, the transmission part check equipment 10 converts the electrical pulse signal (that is, high frequency precision pulse signal) into an optical signal and outputs it.

Thereafter, when the output connection terminal of the optical control card corresponding to the optical firing pulse signal line and the pulse receiving unit 26 of the receiving part checking device 20 are connected through an optical cable, power is supplied to the receiving part checking device 20. , Receiving part check equipment 20 displays the ready state to the reception status display unit (24).

In step S460, the reception unit check equipment 20 receives the optical signal transmitted from the transmission unit check equipment 10 as an optical signal of 12 lines of the optical signal transmitted via the optical control card, and receives the received optical signal It converts into an electric pulse signal and outputs it.

In operation S470, the reception unit checker 20 compares and outputs an electrical pulse signal for 12 lines through an OR gate.

In step S480, the reception unit check equipment 20 performs the synchronization verification for the transmission and reception signals through the control count for the electrical pulse signal compared through the OR gate, and receives for one period (for example, 60Hz) The pulse signal to be checked is checked 120 times in one period to determine normal or error.

In operation S490, the reception unit checking device 20 displays a determination state of normal or error on the reception state display unit 24.

5 is a flowchart illustrating a HVDC optical control card test method. In FIG. 5, the case where the databack signal line is selected among the two check selection modes of the optical firing pulse signal line and the databack signal line will be described.

In step S510, the transmission part check equipment 10 is selected to the check selection mode of the data back signal line.

In step S520, the transmission part check equipment 10 generates a databack pulse signal according to the selection of the check selection mode. For example, the transmission part check equipment 10 may generate the same databack pulse signal as the normal, thyristor bad, BOD signal. The databack pulse signal may be generated in the same manner as the response signal to which the optical control firing signal flashes the thyristor and is fed back.

In step S530, the transmission unit check equipment 10 converts the electrical pulse signal into an optical signal and outputs.

Steps S540 to S570 overlap with steps S460 to S490 of FIG. 4, and thus description thereof is omitted.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

10: outgoing part inspection equipment
11: outgoing power supply
12: outgoing memory input
13: Mode selector
14: origination control unit
15: call status display
16: Thyristor temperature sensor
17: pulse control unit
18: light output control unit
19: transmitter
20: Receiving part inspection equipment
21: receiving power supply
22: Receive Memory Input
23: reception control unit
24: reception status display unit
25: pulse comparator
26: pulse receiving unit

Claims (10)

In the HVDC (High Voltage Direct Current) optical control card test system, which checks a plurality of optical control cards installed in the control panel,
Detects the temperature of the thyristor according to the current magnitude of the thyristor valve, converts the temperature information of the thyristor into a first electrical pulse signal, and converts the first electrical pulse signal adjusted to a high frequency precision pulse signal into an optical signal A transmission part checking device for transmitting to the optical control card by using; And
Receiving part check equipment for receiving the optical signal output via the optical control card to convert the second electrical pulse signal, and comparing the second electrical pulse signal through an OR gate to determine the error or normal, ,
The outgoing part check equipment
A thyristor temperature sensor which senses a temperature of the thyristor according to the current magnitude of the thyristor valve and converts the temperature information of the thyristor into the first electrical pulse signal;
A pulse controller configured to adjust the first electrical pulse signal to a high frequency precision pulse signal;
A transmitter for converting the first electrical pulse signal into an optical signal and outputting the optical signal; And
And a light output controller for transmitting the first electrical pulse signal to the transmitter, and controlling an optical output of the transmitter by changing a magnitude of an input current of the transmitter.
delete The method of claim 1,
The outgoing part check equipment
Further comprising a mode selection unit for receiving a check selection mode for checking the line of the optical control card,
And said check selection mode comprises an optical firing pulse signal line and a databack signal line.
The method of claim 1,
The outgoing part check equipment
An outgoing power supply for supplying power to the outgoing part checker;
An outgoing memory input unit to which a program for an operation control algorithm of the outgoing part check device is input;
An outgoing status display unit displaying outgoing pulse signal status; And
And a transmission control unit for controlling the operation of the transmission part checking device according to the program.
The method of claim 1,
The receiving part check equipment
A pulse receiving unit which receives the optical signal output through the optical control card as an optical signal of 12 lines and converts the received optical signal into a second electrical pulse signal;
A pulse comparator for comparing the second electrical pulse signal through an OR gate and outputting the comparator; And
The second electric pulse signal compared through the OR gate is performed through a control count to perform synchronization verification on the transmission and reception signals, and a pulse signal received during a predetermined period is checked a predetermined number of times to determine a normal or error. HVDC optical control card test system comprising a receiving control unit.
The method of claim 5,
The receiving part check equipment
An outgoing power supply for supplying power to the reception part check equipment;
An outgoing memory input unit to which a program for an operation control algorithm of the reception part checking device is input; And
And a reception status display section for displaying the normal or the determination status of the error.
In the HVDC optical control card test method of the HVDC optical control card test system performing the inspection of a plurality of optical control cards installed in the control panel,
Sensing the temperature of the thyristor according to the current magnitude of the thyristor valve;
Converting temperature information of the thyristor into a first electrical pulse signal;
Converting the first electrical pulse signal adjusted to a high frequency precision pulse signal into an optical signal and transmitting the optical signal to the optical control card;
Receiving the optical signal output via the optical control card and converting the optical signal into a second electrical pulse signal; And
Comparing the second electrical pulse signal through an OR gate to determine an error or normal;
Determining the error or normal
The second electric pulse signal compared through the OR gate is performed through a control count to perform synchronization verification on the transmission and reception signals, and a pulse signal received during a predetermined period is checked a predetermined number of times to determine a normal or error. HVDC optical control card test method, characterized in that.
delete In the HVDC optical control card test method of the HVDC optical control card test system performing the inspection of a plurality of optical control cards installed in the control panel,
Receiving a check selection mode of the databack signal line;
Generating a databack pulse signal;
Converting the databack pulse signal into an optical signal and transmitting the optical signal to the optical control card;
Receiving the optical signal output via the optical control card and converting the optical signal into a second electrical pulse signal; And
Comparing the second electrical pulse signal through an OR gate to determine an error or normal. 10. The method of claim 9,
And the databack pulse signal is generated in the same manner as the response signal to which the optical control call signal fires the thyristor and is fed back.

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