KR102128443B1 - Relay test apparatus - Google Patents

Abstract

We present a relay test device and method to check whether the relay, which is a control element for HVDC conversion equipment, is normal. The proposed device is a relay terminal part to which the relay under test is connected, a primary voltage measurement part to measure a primary voltage value of a relay connected to the relay terminal part, and a secondary voltage measurement to measure a secondary side voltage value of a relay connected to the relay terminal part. It includes a display unit for displaying the measured primary voltage value and secondary voltage value, and a control unit for controlling the primary voltage value and secondary voltage value of the relay connected to the relay terminal unit to be displayed on the display unit.

Description

Relay test apparatus

The present invention relates to a relay test apparatus and method, and more particularly, to a relay test apparatus and method capable of testing a relay that is a control device for conversion equipment.

The high voltage direct current (HVDC) means a method of converting AC power produced by a power plant into DC and transmitting it to a power receiving point, and reconverting it to AC at the receiving point to supply power.

This transmission method enables efficient and economical power transmission through voltage boosting, which is an advantage of the existing AC transmission technology, and overcomes various disadvantages of AC transmission.

Jeju is an international tourist city, so electricity demand is rapidly increasing, while Jeju's power system is operated independently from the land, making it vulnerable in terms of system stability. In addition, because of the uniqueness of the tourist area in Jeju, the cost of power generation is higher than that of land, and in order to improve the system stability and economic efficiency, the need for an ultra-high voltage DC transmission system capable of high power transmission and high-capacity long-distance transmission is increasing.

Accordingly, in Jeju, #1HVDC (DC±180kV 300MW) and #2HVDC (DC±250kV 400MW) are currently in operation, and #3HVDC is under construction.

In addition, the complexity of the power system is steadily increasing as the use of new technologies and the connection with the existing systems are increasing, and at the same time, legal regulations are limited in the system operation at the stability limit. In order to overcome these problems, the need to apply HVDC transmission technology is emerging.

And, for each conversion station, a relay (for example, Delcon Relay), which is a control device for conversion facilities for HVDC, is installed and used at an appropriate location.

The Delcon Relay exemplified above is related to power monitoring of control cubicles for each conversion station, gas insulated switchgear (GIS) circuit breaker and disconnector monitoring, on-site DC DS and trip facility control. Control and the like.

There are two types of delcon relays: input relays and output relays. Here, the input relays include SLI24CRI, SLI125CR, SLI125CRI, etc., and the output relays include SLO24CRO, SLO125CRA, SLO125CR4.

Such a delcon relay can be used as a control element for an external pole block. If the contact point of the corresponding delcon relay malfunctions, a failure occurs in the conversion facility where the corresponding delcon relay is installed.

On the other hand, the delcon relay can also be used as a control element related to the oblique/live wire monitoring and filter available. If the contact point of the corresponding delcon relay malfunctions, the conversion equipment installed with the corresponding delcon relay will cease.

In this way, if a failure or failure of the conversion facility occurs, it is impossible to check the cause of the failure and the normality of the failure of the corresponding delcon relay. So, if a failure or truce in the conversion equipment occurs, the delcon relay is replaced blindly.

Prior art 1: Republic of Korea Utility Model No. 20-0303129 (Cliphone relay tester)

The present invention has been proposed to solve the above-mentioned conventional problems, and its object is to provide a relay test apparatus and method for checking whether a relay, which is a control element for a conversion facility for HVDC, is normal.

In order to achieve the above object, a relay test apparatus according to a preferred embodiment of the present invention includes: a relay terminal unit to which a relay to be tested is connected; A primary voltage measuring unit measuring a primary voltage value of the relay connected to the relay terminal unit; A secondary voltage measuring unit measuring a secondary voltage value of the relay connected to the relay terminal unit; A display unit that displays the measured primary voltage value and secondary voltage value; And a control unit for controlling the primary voltage value and the secondary voltage value of the relay connected to the relay terminal unit to be displayed on the display unit.

The relay terminal portion includes a plurality of terminal blocks, and a relay of a corresponding model may be connected to each terminal block.

The primary side of the connected relay is connected to any one of the different first and second power stages according to the rated voltage, and the secondary side of the connected relay is different from the first and second power stages. It can be connected to any one according to the rated voltage.

A model name of a relay connectable to each terminal block may be displayed on the upper or lower part of each terminal block.

The controller may display whether the corresponding relay connected to the relay terminal is normal based on the measurement result values from the primary voltage measuring unit and the secondary voltage measuring unit.

Whether the relay connected to the relay terminal is normal may be displayed as a text message.

The control unit compares the measurement result values from the primary voltage measurement unit and the secondary voltage measurement unit with the preset relay setting value, and when the measurement result value satisfies the relay setting value, the relay A message indicating that is normal may be displayed on the display unit.

The control unit compares the measurement result values from the primary voltage measurement unit and the secondary voltage measurement unit with the preset relay setting value, and if the measurement result value does not meet the relay setting value, A message indicating that the relay is abnormal may be displayed on the display unit.

A primary current measuring unit measuring a primary current value of the relay connected to the relay terminal unit; And a secondary current measuring unit measuring a secondary current value of the relay connected to the relay terminal unit.

The control unit may display the measured primary current value and secondary current value on the display unit.

The control unit determines whether the corresponding relay connected to the relay terminal unit is normal based on the measurement result values from the primary voltage measurement unit, the secondary voltage measurement unit, the primary current measurement unit, and the secondary current measurement unit. Can be displayed on the display unit.

The control unit compares the measurement result values from the primary voltage measuring unit, the secondary voltage measuring unit, the primary current measuring unit, and the secondary current measuring unit with the preset relay setting value, and When the measurement result value satisfies the setting value of the relay, a message indicating that the relay is normal may be displayed on the display unit.

The control unit compares the measurement result values from the primary voltage measuring unit, the secondary voltage measuring unit, the primary current measuring unit, and the secondary current measuring unit with the preset relay setting value, and If the measurement result value does not satisfy the setting value of the relay, a message indicating that the relay is abnormal may be displayed on the display unit.

The relay terminal unit includes a plurality of terminal blocks, each of which is connected to a relay of the corresponding model, the display unit includes the same number of relay units as the number of the terminal block, the relay-specific display unit of the respective It can be corresponded one-to-one with the terminal block.

The relay to be tested may be a relay which is a control element of a high voltage direct current (HVDC) conversion facility.

On the other hand, the relay test method according to a preferred embodiment of the present invention, a relay test method in a relay test apparatus, comprising: measuring a primary side voltage value and a secondary side voltage value of a relay to be tested connected to a relay terminal unit; And displaying the measured primary voltage value and secondary voltage value.

According to the present invention having such a configuration, it is possible to test whether a relay (for example, a Delcon Relay) which is a control element for a conversion facility is normal, and when a defect (abnormal) occurs, a failure point can be quickly and accurately determined.

For this reason, it is possible to shorten the defective action time and to expect an effect of preventing a ripple failure.

In addition, when the relay test apparatus of the present invention is applied to an HVDC conversion facility under construction or to be built, it is possible to expect a more stable facility operation and an effect of improving power supply reliability.

1 is a block diagram of a relay test apparatus according to an embodiment of the present invention.
2 is a view showing a relay employed in a relay test apparatus according to an embodiment of the present invention.
3 is a view for explaining the load resistance value design for measuring the secondary voltage value of the relay in the relay test apparatus according to an embodiment of the present invention.
4 is an external view of a relay test apparatus according to an embodiment of the present invention.
5 is a left side view of the relay test apparatus shown in FIG. 4.
6 is a circuit diagram of a relay test apparatus according to an embodiment of the present invention.
7 is a flowchart illustrating a relay test method according to an embodiment of the present invention.
8 and 9 are diagrams showing an example of a test result employed in the description of FIG. 7.
10 and 11 are views showing another example of a test result employed in the description of FIG. 7.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail.

However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "include" or "have" are intended to indicate the presence of features, numbers, steps, actions, components, parts or combinations thereof described in the specification, but one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms, such as those defined in a commonly used dictionary, should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the overall understanding in describing the present invention, the same reference numerals are used for the same components in the drawings, and duplicate descriptions for the same components are omitted.

1 is a block diagram of a relay test apparatus according to an embodiment of the present invention, Figure 2 is a view showing a relay employed in the relay test apparatus according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention FIG. 4 is a view for explaining a load resistance value design for measuring a secondary voltage value of a relay in a relay test apparatus according to an example, FIG. 4 is an external view of the relay test apparatus according to an embodiment of the present invention, and FIG. It is a left side view of the relay test device shown in.

The relay test apparatus according to the embodiment of the present invention includes a storage unit 10, a relay terminal unit 12, a button unit 14, a lamp unit 16, a first display unit 18, a second display unit 20, 1 It includes a secondary-side voltage measuring section 22, a secondary-side voltage measuring section 24, a primary-side current measuring section 26, a secondary-side current measuring section 28, and a control section 30.

The storage unit 10 stores in advance the setting values of the various relays RL to be tested (for example, primary voltage value, secondary voltage value, primary current value, secondary current value, etc.). Here, the form of an example of the relay RL to be tested is as illustrated in FIG. 2. And, the various relays (RL) to be tested in the present invention may be a relay that is a control element of a high voltage direct current (HVDC; High Voltage Direct Current) conversion facility.
The setting values of various relays RL stored in the storage unit 10 may be stored in the form of a look-up table as shown in Table 1 below.

delete

model name Primary side Secondary Judgment criteria
(Initial value)
[V] V _IN
[V] I _IN
[mA] V _LOAD
[V] I _LOAD
[mA] R _LOAD
[kΩ] V _DROP (max)
[V] SLI24CR 24 6 24 24 One 0.2(0.4) 0.2(0.4) SLI24CRI 24 6 24 24 One 0.3 (0.5) 0.3(24) SLO24CR 24 12 24 24 One 0.5 0.5(24) SLI125CR 110 4 24 24 One 0.2(0.4) 0.2(24) SLI125CRI 110 4 24 24 One 0.3 (0.5) 0.3(24) SLO24CRA 24 12 125 124 One One 1 (125) SLO24CRA4 24 12 125 124 One 0.6 0.6(125)

The load resistance value R _LOAD illustrated in Table 1 above was designed to measure the secondary voltage value of the relay RL to be tested. The SLI24CR input relay is described as an example and is as follows. Referring to FIG. 3, in the case of the primary side off (input voltage not applied; switch off), since the secondary relay contact is in an open state, the voltage across the contact is equal to the source voltage V _L. Conversely, in the case of the primary-side on (input voltage application; switch-on), since the secondary relay contact is closed, a voltage corresponding to the voltage drop (V _DROP ) specified in the relay specification is applied to the contact.

At this time, in Figure 3 R _L = (V _L -V _DROP ) / I _L = (24V-0.4V) / 24mA = It is designed to be 1kΩ.

In this way, if the load resistance value R _LOAD is designed to be 1 kΩ, the secondary voltage value of the relay RL to be tested can be measured.

The relay terminal unit 12 is connected to various relays RL to be tested. The relay terminal unit 12 may be installed on the first body unit 40 of the relay test apparatus illustrated in FIG. 4, and may include a plurality of terminal blocks 12a, 12b, 12c, 12d, and 12e.

For example, the terminal block 12a can be connected (attached) to the SLO24CRA relay. SLO24CRA4 relay can be connected (attached) to the terminal block 12b. The terminal block 12c can be connected (attached) to the SLI125CR relay. SLI125CRI relay can be connected (attached) to the terminal block 12d. The terminal block 12e can be connected (attached) to an SLI24CR relay or an SLI24CRI relay.

On the other hand, although not shown in Figure 4, each of the terminal block (12a, 12b, 12c, 12d, 12e) may be displayed on the upper or lower of the model name of the relay that can be connected to each terminal block.

The button unit 14 may turn on/off the operation of the relay test device and the relay to be tested.

The button part 14 may be installed on the second body part 50 of the relay test apparatus shown in FIG. 4, and may include a plurality of buttons 14a, 14b, 14c, 14d, 14e, and 14f.

For example, the button 14a may be a main power button for selecting operation on/off of the relay test device. The button 14b may be a relay button for selecting on/off of the relay connected to the terminal block 12a. The button 14c may be a relay button for selecting on/off of the relay connected to the terminal block 12b. The button 14d may be a relay button for selecting on/off of the relay connected to the terminal block 12c. The button 14e may be a relay button for selecting on/off of the relay connected to the terminal block 12d. The button 14f may be a relay button for selecting on/off of the relay connected to the terminal block 12e.

The lamp unit 16 may display on/off of the relay RL connected to the relay terminal unit 12.

The lamp unit 16 may be installed on the second body unit 50 of the relay test device illustrated in FIG. 4, and may include a plurality of lamps 16a, 16b, 16c, 16d, and 16e.

For example, the lamp 16a indicates on/off of the relay connected to the terminal block 12a. The lamp 16b indicates on/off of the relay connected to the terminal block 12b. The lamp 16c indicates on/off of the relay connected to the terminal block 12c. The lamp 16d indicates on/off of the relay connected to the terminal block 12d. The lamp 16e indicates on/off of the relay connected to the terminal block 12e.

The first display unit 18 may display (alarm) the primary side voltage value, the secondary side voltage value, the primary side current value, and the secondary side current value of the relay RL connected to the relay terminal portion 12. Of course, if necessary, the first display unit 18 may also display whether the relay RL connected to the relay terminal unit 12 is normal with a text message (eg, normal or abnormal).

The first display unit 18 may be installed on the first body unit 40 of the relay test apparatus shown in FIG. 4, a plurality of relay-specific display units 18a, 18b, 18c, 18d, 18e, 18f, 18g, 18h , 18i, 18j).

For example, the display unit 18a may display a primary voltage value and a current value of a relay (eg, SLO24CRA relay) connected to the terminal block 12a. The display unit 18b may display a secondary voltage value and a current value of a relay (eg, SLO24CRA relay) connected to the terminal block 12a. That is, when the relay RL connected to the terminal block 12a is referred to as a first relay, the display unit 18a and the display unit 18b may be referred to as a display unit of the first relay.

The display unit 18c may display a primary voltage value and a current value of a relay (eg, SLO24CRA4 relay) connected to the terminal block 12b. The display unit 18d may display a secondary voltage value and a current value of a relay (eg, SLO24CRA4 relay) connected to the terminal block 12b. That is, when the relay RL connected to the terminal block 12b is referred to as a second relay, the display unit 18c and the display unit 18d may be referred to as a display unit of the second relay.

The display unit 18e may display a primary voltage value and a current value of a relay (eg, SLI125CR relay) connected to the terminal block 12c. The display unit 18f may display a secondary voltage value and a current value of a relay (eg, SLI125CR relay) connected to the terminal block 12c. That is, when the relay RL connected to the terminal block 12c is referred to as a third relay, the display unit 18e and the display unit 18f may be referred to as a display unit of the third relay.

The display unit 18g may display a primary voltage value and a current value of a relay (eg, SLI125CRI relay) connected to the terminal block 12d. The display unit 18h may display a secondary voltage value and a current value of a relay (eg, SLI125CRI relay) connected to the terminal block 12d. That is, when the relay RL connected to the terminal block 12d is referred to as a fourth relay, the display unit 18g and the display unit 18h may be referred to as a display unit of the fourth relay.

The display unit 18i may display a primary voltage value and a current value of a relay (eg, SLI24CR relay or SLI24CRI relay) connected to the terminal block 12e. The display unit 18j may display a secondary voltage and current value of a relay (eg, SLI24CR relay or SLI24CRI relay) connected to the terminal block 12e. That is, when the relay RL connected to the terminal block 12e is referred to as a fifth relay, the display unit 18i and the display unit 18j may be referred to as a display unit of the fifth relay.

Of course, the above-described first display unit 18 may display only the primary-side voltage value and the secondary-side voltage value of the relay RL connected to the relay terminal 12, but the primary-side current value and the secondary-side current value may be used. If it is additionally displayed, it is possible to grasp more accurately what kind of failure it is than displaying only the primary voltage value and the secondary voltage value. That is, the primary current measuring unit 26 and the secondary current measuring unit 28 may not be required. However, when these are additionally configured, since the primary voltage value and the secondary voltage value, the primary current value, and the secondary current value are all measured, it is possible to grasp what kind of failure is more accurate than displaying only the primary voltage value and the secondary voltage value. You can.

The second display unit 20 may display (alarm) the primary side voltage value, the secondary side voltage value, the primary side current value, and the secondary side current value of the relay RL connected to the relay terminal portion 12.

Also, the second display unit 20 may display (alarm) whether the relay RL connected to the relay terminal unit 12 is normal.

The second display unit 20 may be installed on the second body unit 50 of the relay test device illustrated in FIG. 4. The second display unit 20 may display whether the relay RL connected to the relay terminal unit 12 is normal with a text message (eg, normal or abnormal).

Although the primary voltage value, secondary voltage value, primary current value, and secondary current value of the relay RL displayed on the first display unit 18 are sufficient to determine whether the corresponding relay is normal, the second display unit ( If you see whether the relay indicated by letter in 20) is normal, you can immediately check whether the relay is normal.

If necessary, the second display unit 20 may be installed on the first body unit 40 of the relay test device illustrated in FIG. 4.

The primary-side voltage measuring unit 22 measures the primary-side voltage value of the relay RL connected to the relay terminal unit 12.

The secondary-side voltage measuring unit 24 measures the secondary-side voltage value of the relay RL connected to the relay terminal unit 12.

The primary current measuring unit 26 measures the primary current value of the relay RL connected to the relay terminal unit 12.

The secondary current measuring unit 28 measures the secondary current value of the relay RL connected to the relay terminal unit 12.

The control unit 30 controls the overall operation of the relay test apparatus according to an embodiment of the present invention.

In particular, the control unit 30 includes a first display unit 18 and a first-side voltage value, a second-side voltage value, a primary-side current value, and a secondary-side current value for the relay RL connected to the relay terminal unit 12. 2 Control so that it is displayed on the display unit 20.

In addition, the control unit 30 receives voltage and current values from the primary voltage measuring unit 22, the secondary voltage measuring unit 24, the primary current measuring unit 26, and the secondary current measuring unit 28. Based on the basis, it is determined whether the corresponding relay RL connected to the relay terminal 12 is normal, and a message (eg, normal, abnormal) informing the result of the determination is controlled to be displayed on the second display unit 20. Here, in determining whether the relay RL is normal, the control unit 30 compares the set values of various relays RL stored in the storage unit 10 in advance.

In the relay test apparatus according to the embodiment of the present invention, the handle 42 is installed on the left and right sides of the first body part 40. Although the handle 42 installed on the left side of the first body portion 40 is shown in FIG. 5, the handle 42 will also be installed on the right side of the first body portion 40.

For this reason, the relay test apparatus according to the embodiment of the present invention is portable and easily movable.

In addition, although the first display unit 18 and the second display unit 20 have been separately configured and described above, the primary side voltage value/current value and 2 of the relay RL connected to the relay terminal unit 12 with any one are described. It will be possible to display (alarm) the display of the voltage/current value on the vehicle side and whether the corresponding relay RL is normal.

6 is a circuit diagram of a relay test apparatus according to an embodiment of the present invention.

The main power button 14a is connected to different first power terminals (eg, 24V) and second power terminals (eg, 125V).

Each relay (RL1, RL2, RL3, RL4) is connected to the power stage (24V power stage, 125V power stage) connected to the rear end of the main power button (14a) via each button (14b, 14c, 14d, 14e, 14f). , RL5) are connected.

Referring to FIG. 6, the primary side of the relays RL1, RL2, RL3, RL4, and RL5 connected to the terminal blocks 12a, 12b, 12c, 12d, and 12e of the relay terminal unit 12 is according to the rated voltage of the relay. 2 of relays RL1, RL2, RL3, RL4, RL5 connected to the corresponding first power supply terminal or the second power supply terminal and connected to the terminal blocks 12a, 12b, 12c, 12d, and 12e of the relay terminal unit 12 The vehicle side is connected to a corresponding first power terminal or a second power terminal according to the rated voltage of the relay.

Here, the relay RL1 may be an SLO24CRA relay. The primary side of the relay RL1 is connected to the first power stage via a button 14b, and the secondary side is connected to the second power stage via a resistor. A lamp 16a and a primary voltage measuring unit 22 are connected in parallel to the primary side of the relay RL1. Although the primary current measuring unit 26 connected to the primary side of the relay RL1 is not shown in FIG. 6, it is understood that the primary current measuring unit 26 is connected to the primary side of the relay RL1. The secondary voltage measuring unit 24 is connected to the secondary side of the relay RL1. Although the secondary current measuring unit 28 connected to the secondary side of the relay RL1 is not illustrated in FIG. 6, it is understood that the secondary current measuring unit 28 is connected to the secondary side of the relay RL1.

The relay RL2 may be a SLO24CRA4 relay. The primary side of the relay RL2 is connected to the first power stage via a button 14c, and the secondary side is connected to the second power stage via a resistor. A lamp 16b and a primary voltage measuring unit 22 are connected in parallel to the primary side of the relay RL2. Although the primary current measuring unit 26 connected to the primary side of the relay RL2 is not shown in FIG. 6, it is understood that the primary current measuring unit 26 is connected to the primary side of the relay RL2. The secondary voltage measuring unit 24 is connected to the secondary side of the relay RL2. Although the secondary current measuring unit 28 connected to the secondary side of the relay RL2 is not illustrated in FIG. 6, it is understood that the secondary current measuring unit 28 is connected to the secondary side of the relay RL2.

The relay RL3 may be an SLI125CR relay. The primary side of the relay RL3 is connected to the second power source via a button 14d, and the secondary side is connected to the first power source via a resistor. The lamp 16c and the primary voltage measuring unit 22 are connected in parallel to the primary side of the relay RL3. Although the primary current measuring unit 26 connected to the primary side of the relay RL3 is not shown in FIG. 6, it is understood that the primary current measuring unit 26 is connected to the primary side of the relay RL3. The secondary voltage measuring unit 24 is connected to the secondary side of the relay RL3. Although the secondary current measuring unit 28 connected to the secondary side of the relay RL3 is not illustrated in FIG. 6, it is understood that the secondary current measuring unit 28 is connected to the secondary side of the relay RL3.

The relay RL4 may be an SLI125CRI relay. The primary side of the relay RL4 is connected to the second power source via a button 14e, and the secondary side is connected to the first power source via a resistor. A lamp 16d and a primary voltage measuring unit 22 are connected in parallel to the primary side of the relay RL4. Although the primary current measuring unit 26 connected to the primary side of the relay RL4 is not shown in FIG. 6, it is understood that the primary current measuring unit 26 is connected to the primary side of the relay RL4. The secondary voltage measuring unit 24 is connected to the secondary side of the relay RL4. Although the secondary current measuring unit 28 connected to the secondary side of the relay RL4 is not shown in FIG. 6, it is understood that the secondary current measuring unit 28 is connected to the secondary side of the relay RL4.

The relay RL5 may be an SLI24CR relay or an SLI24CRI relay. The primary side of the relay RL5 is connected to the second power stage via a button 14f, and the secondary side is connected to the second power stage via a resistor. A lamp 16e and a primary voltage measuring unit 22 are connected in parallel to the primary side of the relay RL5. Although the primary current measuring unit 26 connected to the primary side of the relay RL5 is not illustrated in FIG. 6, it is understood that the primary current measuring unit 26 is connected to the primary side of the relay RL5. The secondary voltage measuring unit 24 is connected to the secondary side of the relay RL5. Although the secondary current measuring unit 28 connected to the secondary side of the relay RL5 is not illustrated in FIG. 6, it is understood that the secondary current measuring unit 28 is connected to the secondary side of the relay RL5.

In FIG. 6, the primary voltage measuring units 22 are respectively connected to the primary side of the relay RL, and the secondary voltage measuring units 24 are respectively connected to the secondary side of the relay RL.

Meanwhile, the primary current measuring unit 26 will be connected to the primary side of the relay RL, respectively, and the secondary current measuring unit 28 will be connected to the secondary side of the relay RL, respectively.

Hereinafter, the operation of the relay test apparatus according to the embodiment of the present invention will be described. 7 is a flowchart for explaining a relay test method according to an embodiment of the present invention, FIGS. 8 and 9 are views showing an example of a test result employed in the description of FIG. 7, and FIGS. 10 and 11 are It is a figure showing another example of the test result employed in the description of FIG. 7.

First, the operator who wants to test the relay (eg, Delcon relay) connects the relay to be tested to the relay terminal 12 (S10). Here, it is assumed that the SLI125CR relay (RL) is the test subject. That is, it is assumed that the SLI125CR relay RL3 is connected to the terminal block 12c.

Then, the operator turns on (ON) the main power button 14a and the corresponding relay button 14d (S20). Accordingly, the lamp 16c connected to the primary side of the SLI125CR relay RL3 is turned on.

Along with this, the primary voltage measuring unit 22 and primary current measuring unit 26 connected to the primary side of the SLI125CR relay RL3 measure the primary voltage and current values of the relay RL. Then, the secondary-side voltage measuring unit 24 and the secondary-side current measuring unit 28 connected to the secondary side of the SLI125CR relay RL3 measure the secondary-side voltage value and current value of the corresponding relay RL (S30). .

As described above, the measurement result values (that is, the primary-side voltage value) in the primary-side voltage measuring section 22, the secondary-side voltage measuring section 24, the primary-side current measuring section 26, and the secondary-side current measuring section 28 /Current value, secondary-side voltage value/current value) are transmitted to the control unit 30.

The control unit 30 transmits the input primary voltage/current value and secondary voltage/current value to the corresponding relay-specific display units (ie, 18e and 18f) and the second display unit 20 of the first display unit 18. It is displayed (S40).

In addition, the control unit 30 receives voltage and current values from the primary voltage measuring unit 22, the secondary voltage measuring unit 24, the primary current measuring unit 26, and the secondary current measuring unit 28. It is determined whether or not the SLI125CR relay RL3 connected to the terminal block 12c is normal (S50).

Then, the control unit 30 displays a message (eg, normal or abnormal) informing the result of the determination on the second display unit 20 (S60).

For example, the primary side voltage value of the SLI125CR relay RL3 connected to the terminal block 12c is measured as 124.1V, the primary current value is measured as 14.4A, and the secondary side voltage value of the SLI125CR relay RL3 is Assume that it is measured at 0.0V and the secondary current value is 23.8A. In this case, the controller 30 displays the corresponding measurement result values (that is, the primary voltage value/current value, the secondary voltage value/current value) corresponding to relay-specific display units (ie, 18e and 18f) as shown in FIG. 8, and It is displayed on the second display unit 20 as shown in FIG. 9. Then, the control unit 30 compares the measurement result value with the setting value of the corresponding relay RL stored in the storage unit 10 in advance, and if the measurement result value satisfies the setting value, the second result is shown in FIG. 9. A message in the form of a letter indicating that the relay RL is normal is displayed on the display unit 20.

As another example, the primary-side voltage value of the SLI125CR relay RL3 connected to the terminal block 12c is measured as 124.6V, the primary-side current value is measured as 15.5A, and the secondary-side voltage value of the SLI125CR relay RL3 is Assume that it is measured at 13.4V and the secondary current value is 10.4A. In this case, the control unit 30 displays the corresponding measurement result values (that is, the primary side voltage value/current value, the secondary side voltage value/current value) as shown in FIG. 10 for each relay-specific display unit (ie, 18e and 18f), and 11, it is displayed on the second display unit 20. Then, the control unit 30 compares the measurement result value with the setting value of the corresponding relay RL stored in the storage unit 10 in advance. As the measurement result value does not satisfy the setting value, the control unit 30 displays a message indicating that the relay RL is abnormal on the second display unit 20 as shown in FIG. 11.

In the above, the SLI125CR relay RL connected to the terminal block 12c has been described as a test object, but the test procedure and the same procedure described above are also performed when another relay connected to a terminal block other than the terminal block 12c is used as a test object. The normal/abnormal display operation will be performed. On the other hand, after connecting a plurality of relays to the corresponding terminal block to the relay terminal unit 12 may be sequentially tested.

In addition, the relay test method of the present invention described above can be implemented as a computer-readable code on a computer-readable recording medium. The computer-readable recording medium includes all types of recording devices in which data readable by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, and optical data storage devices. In addition, the computer-readable recording medium can be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. And, functional programs, codes, and code segments for implementing the method can be easily inferred by programmers in the technical field to which the present invention pertains.

As described above, optimal embodiments have been disclosed in the drawings and specifications. Although specific terms are used herein, they are used only for the purpose of describing the present invention and are not used to limit the scope of the present invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

10: storage unit 12: relay terminal unit
14: button unit 16: lamp unit
18: first display unit 20: second display unit
22: primary voltage measuring unit 24: secondary voltage measuring unit
26: primary current measuring unit 28: secondary current measuring unit
30: control unit 40: first body portion
42: handle 50: second body portion

Claims (29)

A relay terminal portion to which the relay under test is connected;
A primary voltage measuring unit measuring a primary voltage value of the relay connected to the relay terminal unit;
A secondary voltage measuring unit measuring a secondary voltage value of the relay connected to the relay terminal unit;
A display unit that displays the measured primary voltage value and secondary voltage value;
A control unit for controlling the primary side voltage value and the secondary side voltage value of the relay connected to the relay terminal portion to be displayed on the display unit; And
As the setting value of the relay, which is the test target, a storage storing a load resistance value designed to measure the primary voltage value, the secondary voltage value, the primary current value, the secondary current value, and the secondary voltage value part;
Relay test device comprising a. The method according to claim 1,
The relay terminal unit includes a plurality of terminal blocks, the relay test device, characterized in that the relay of the corresponding model is connected to each terminal block. The method according to claim 2,
The primary side of the connected relay is connected to any one of the different first and second power stages according to the rated voltage, and the secondary side of the connected relay is different from the first and second power stages. Relay test device characterized in that it is connected to any one according to the rated voltage. The method according to claim 2,
A relay test apparatus characterized in that a model name of a relay connectable to each terminal block is displayed on the upper or lower part of each terminal block. The method according to claim 1,
The control unit,
A relay test apparatus characterized in that the display unit indicates whether the corresponding relay connected to the relay terminal unit is normal based on the measurement result values from the primary voltage measurement unit and the secondary voltage measurement unit. The method according to claim 5,
The relay test device, characterized in that the normal state of the relay connected to the relay terminal is indicated by a text message. The method according to claim 5,
The control unit,
The measurement results from the primary voltage measurement unit and the secondary voltage measurement unit are compared with the preset relay setting value, and when the measurement result value satisfies the relay setting value, the relay is known as normal. A relay test device characterized in that a message is displayed on the display unit. The method according to claim 5,
The control unit,
The measurement results from the primary voltage measurement unit and the secondary voltage measurement unit are compared with the preset relay setting value, and if the measurement result value does not satisfy the relay setting value, the relay is abnormal. A relay test device characterized in that a message is displayed on the display unit. The method according to claim 1,
A primary current measuring unit measuring a primary current value of the relay connected to the relay terminal unit; And
And a secondary current measuring unit measuring a secondary current value of the relay connected to the relay terminal unit. The method according to claim 9,
The control unit,
A relay test apparatus, characterized in that the measured primary current value and secondary current value are displayed on the display unit. The method according to claim 10,
The control unit,
Based on the measurement result values from the primary voltage measuring unit, the secondary voltage measuring unit, the primary current measuring unit and the secondary current measuring unit, whether or not the relay connected to the relay terminal unit is normal is displayed on the display unit. Relay test device characterized in that the display. The method according to claim 11,
The relay test device, characterized in that the normal state of the relay connected to the relay terminal is indicated by a text message. The method according to claim 11,
The control unit,
The measurement result values from the primary voltage measuring unit, the secondary voltage measuring unit, the primary current measuring unit, and the secondary current measuring unit are compared with the preset relay setting value, and the measured result value is When the setting value of the relay is satisfied, a relay test device characterized in that a message indicating that the relay is normal is displayed on the display unit. The method according to claim 11,
The control unit,
The measurement result values from the primary voltage measuring unit, the secondary voltage measuring unit, the primary current measuring unit, and the secondary current measuring unit are compared with the preset relay setting value, and the measured result value is Relay test device characterized in that if the setting value of the relay does not meet, a message indicating that the relay is abnormal is displayed on the display unit. The method according to claim 1,
The relay terminal portion includes a plurality of terminal blocks, the relay of the corresponding model is connected to each terminal block,
The display unit includes a relay-specific display unit having the same number of terminals as the number of terminal blocks, and the relay-specific display unit is characterized in that the one-to-one correspondence with each terminal block. The method according to claim 1,
The test relay is a relay test device, characterized in that the relay is a control element of the ultra-high voltage direct current transmission (HVDC) conversion equipment. delete delete delete delete delete delete delete delete delete delete delete delete delete

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