JP2007183171A - Device and method for testing distribution line relay - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and method for testing a distribution line relay capable of efficiently performing a unit test of many distribution line relays. <P>SOLUTION: The device 1 performs the unit test of many distribution line relays 31<SB>1</SB>, 31<SB>2</SB>and 31<SB>3</SB>. The device includes a body device having a test current generating means that is built in a relay board and generates test current I<SB>0</SB>, and a relay section 30 that is built in the relay board and has many distribution line relays 31<SB>1</SB>, 31<SB>2</SB>and 31<SB>3</SB>. Many distribution line relays 31<SB>1</SB>, 31<SB>2</SB>and 31<SB>3</SB>have relay output means 32<SB>1</SB>, 32<SB>2</SB>and 32<SB>3</SB>, and relay control means 33<SB>1</SB>, 33<SB>2</SB>and 33<SB>3</SB>for operating the relay output means 32<SB>1</SB>, 32<SB>2</SB>and 32<SB>3</SB>. The test current generating means of the body device inputs the test current I<SB>0</SB>to the relay control means 33<SB>1</SB>, 33<SB>2</SB>and 33<SB>3</SB>of many distribution line relays 31<SB>1</SB>, 31<SB>2</SB>and 31<SB>3</SB>. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a distribution line relay unit test apparatus and a distribution line relay unit test method, and more particularly to a distribution line relay unit test apparatus and a distribution line relay unit test method suitable for simultaneously performing a unit test of a large number of distribution line relays. .

Conventionally, for example, when a ground fault occurs in a distribution line, a unit test of a ground fault direction relay (DG) used to cut off the distribution line is performed for each ground fault direction relay (distribution line). The test voltage (V ₀ ) and the test current (I ₀ ) are input to the ground fault relay from the test circuit while changing the phase of each other, and the voltage value of the test voltage and the current of the test current when the ground fault relay operates. This is done by comparing the value and the phase value with the voltage set value, the current set value and the phase set value, respectively, and checking whether or not the ground fault direction relay operates within a predetermined relay operating range.

  In Patent Document 1 below, analog input is A / D converted in order to perform a relay unit test for confirming a relay malfunction based on a change in analog frequency without changing the reference calculation software for relay determination. In a digital relay that protects the system by relaying the converted sampling data in the CPU unit, the unit test mode function is set in the CPU unit to change the sample phase of A / D conversion every fixed period, and during each fixed period The relay calculation is performed using the sample data whose phase has changed, and the relay determination is performed. Until the relay calculation stabilizes during each fixed period, the previous relay determination value is held and output. A test method for a digital protective relay device that outputs a new relay judgment value after stabilization is disclosed.

Patent Document 2 listed below includes a ground fault device control unit that performs open / close control of the ground fault device in order to semi-automate the artificial ground fault test, and to promote reduction of work amount, reduction of test time, and prevention of danger. , A measurement unit that performs high-speed sampling of zero-phase voltage and ground fault current, and a relay that generates simulated zero-phase voltage and simulated ground fault current as a test signal for the ground fault protection relay and measures the operating value of the ground fault protection relay A test circuit unit and a microcomputer unit that controls each of the above-described units and performs predetermined calculations on the output data of the measurement unit to obtain the ground fault characteristics of the line serving as basic data for generating a test signal In addition, a distribution line artificial ground fault testing apparatus is disclosed that instantaneously grounds a distribution line to measure ground line characteristics and perform an operation test of a ground fault protection relay.
JP-A-9-19044 Japanese Patent Laid-Open No. 2-105073

  However, when the unit test is performed for each ground fault direction relay as described above, there is a problem that the work time becomes long and the wiring for the unit test takes a long time and is not efficient.

  An object of the present invention is to provide a distribution line relay unit testing apparatus and a distribution line relay unit test method capable of efficiently performing a unit test of a number of distribution line relays.

The distribution line relay unit testing apparatus of the present invention is a distribution line relay testing apparatus for performing a single unit test of a large number of distribution line relays (31 ₁ , 31 ₂ , 31 ₃ ), and is incorporated in a relay panel (2). And a main body unit (20) having a test current generating means for generating a test current (I ₀ ), and a relay that is incorporated in the relay panel and includes the plurality of distribution line relays Part (30), and the plurality of distribution line relays respectively operate relay output means (32 ₁ , 32 ₂ , 32 ₃ ) and relay control means (33 ₁ , 33 ₂ , 33 ₃ ), wherein the test current generating means inputs the test current in series to the relay control means of the plurality of distribution line relays.
Here, each of the plurality of distribution line relays detects an operation display lamp (35 ₁ , 35 ₂ , 35 ₃ ) for indicating that the relay output means has been operated, and the operation of the relay output means. Then, an operation detection means (34 ₁ , 34 ₂ , 34 ₃ ) for turning on the operation display lamp and outputting an operation detection signal to the main body unit is provided. An image pickup means (40) for taking an image of the operation display lamp of the distribution line relay, and when the operation detection signal is input from the operation detection means to the main body unit, the image pickup means Image acquisition means (21) for adding identification data and a time stamp for identifying a distribution line relay having a lit operation display lamp to the input image data is further provided. The test current generating means when the operation detection signal from the operation detecting means is input, may acquire the current value of the test current when said operating detection signal is input.
A test current measuring instrument (62) that is built in or externally attached to the main unit and for measuring the current value of the test current is further provided, and the imaging means also includes the test current measuring instrument. You may shoot.
The main body unit outputs the test result output for outputting the image data to which the specifying data and the time stamp are added by the image acquisition unit and the current value of the test current acquired by the test current generation unit to the outside. Means may further be provided.
The test current generation means generates the test current based on a test pattern, and the distribution line relay test apparatus displays the test pattern input from the test current generation means. And outputting the image represented by the data for identification and the image data with the time stamp added from the test result output means and the current value of the test current input from the test result output means Output means (42) may further be provided.
The main body unit sets the distribution line relay to settling means (22) for determining the settling value of the distribution line relay, and a set value change signal for changing the settling value obtained by the setting means. Transmission control means (81) for receiving, wherein the test current generation means is a set value obtained by the settling unit or a set value changed according to a set value change signal received by the transmission control means. The test pattern may be created based on the above.
The main body unit outputs a test current to the test current generating unit based on a mode switching signal for switching between an operation mode and a test mode input via the transmission control unit, and the plurality of distribution line relays. Control means (25) for causing the unit test to be performed and transmitting the test data including the mode confirmation information of the operation mode or the test mode, the image data, and the current value of the test current to the outside via the transmission control means. Furthermore, you may provide.
The relay output means of the multiple distribution line relays is configured so that the control means does not output a trip signal to the multiple circuit breakers (11 _{1 to} 11 ₃ ) during the unit test of the multiple distribution line relays. You may control.
The control means controls the relay output means of the multiple distribution line relays so as to output a trip signal to the multiple circuit breakers during a single test of the multiple distribution line relays. You may make it perform the real interruption | blocking test of this circuit breaker.
When the main body unit generates a test voltage (V ₀ ) and a test current with different phases instead of the test current generating unit, and the operation detection signal is input from the operation detection unit, Test voltage / current generation means (23) may be provided for acquiring the voltage value of the test voltage when the operation display lamp is lit, the current value of the test current, and the phase value of the test voltage and the test current.

The distribution line relay unit testing method according to the present invention includes a main unit (20) having a test current generating means for generating a test current (I ₀ ) and a number of distribution line relays (31 ₁ , 31 ₂ , 31 ₃ ). And a relay unit (30) including a relay unit (2), and the test current from the test current generating means is relayed to the relay control means (33 ₁ , 33 ₂ , 33 _{3 of the} plurality of distribution line relays). ), The relay output means (32 ₁ , 32 ₂ , 32 ₃ ) of the multiple distribution line relays are operated by the relay control means of the multiple distribution line relays, and the multiple distribution lines are operated. It is characterized by conducting a unit test of a wire relay.
When the operation detecting means (34 ₁ , 34 ₂ , 34 ₃ ) of the multiple distribution line relays detects the operation of the relay output means of the multiple distribution line relays, the operation display of the multiple distribution line relays A step (S13, S16, S19) of turning on the operation lamps (35 ₁ , 35 ₂ , 35 ₃ ) and outputting an operation detection signal to the main unit, and an image acquisition means (21) of the main unit When the operation detection signal is input from the operation detection means of the multiple distribution line relays, an image is input from the imaging means (40) for photographing the operation display lamps of the multiple distribution line relays. A step (S14, S17, S20) of adding identification data and a time stamp for identifying a distribution line relay having a lit operation display lamp to the data; When the operation detection signal is input from the operation detection unit of the plurality of distribution line relays, the test current generation unit acquires a current value of the test current when the operation detection signal is input (S15, S18, S21).
The test result output means of the main body unit externally outputs the image data to which the specifying data and the time stamp are added by the image acquisition means, and the current value of the test current acquired by the test current generation means. An output step (S22) may be further included.
The main unit generates a test voltage (V ₀ ) and a test current (I ₀ ) with different phases instead of the test current generation means, and the operation detection signal is input from the operation detection means. Then, the test voltage / current generating means (23) for obtaining the voltage value of the test voltage when the operation display lamp is lit, the current value of the test current, and the phase value of the test voltage and the test current, The test voltage / current generation means inputs the test current in series to the relay control means of the multiple distribution line relays and inputs the test voltage in parallel to detect operation of the multiple distribution line relays. When the operation detection signal is input from the means, the voltage value of the test voltage, the current value of the test current, and the phase value of the test voltage and the test current when the operation detection signal is input are acquired, and the main body device Test results The output means includes the image data to which the specifying data and the time stamp are added by the image acquisition means, the voltage value of the test voltage acquired by the test voltage / current generation means, the current value of the test current, and the The phase value of the test voltage and the test current may be output to the outside.

The distribution line relay unit test apparatus and the distribution line relay unit test method of the present invention have the following effects.
(1) A single unit test of a number of distribution line relays by incorporating a relay section equipped with a number of distribution line relays into the relay panel and inputting a test current in series to the relay control means of the number of distribution line relays Can be performed simultaneously, so that the efficiency of the unit test of the distribution line relay can be improved.
(2) Specification data and time for specifying a distribution line relay having a lit operation display lamp in image data input from an imaging means for photographing the operation display lamps of a number of distribution line relays By adding the stamp, it can be easily confirmed whether or not the operation display lamp is normally lit.

  The purpose of efficiently conducting a single test of a large number of distribution line relays is to incorporate a relay section equipped with a large number of distribution line relays into the relay panel and to connect the test current in series to the relay control means of the large number of distribution line relays. Realized by inputting.

Embodiments of a distribution line relay unit testing apparatus and a distribution line relay unit testing method of the present invention will be described below with reference to the drawings.
A distribution line relay unit testing apparatus 1 according to an embodiment of the present invention includes first to third ground fault direction relays (hereinafter referred to as “first to third relays” provided on first to third distribution lines, respectively. ) Used when performing unit tests 31 _{1 to} 31 ₃ , and as shown in FIG. 1, the main unit 20 and the relay unit 30 incorporated in the relay panel 2, and the main unit A camera 40 (imaging unit) connected to the unit 20, an oscilloscope 41 (waveform observing unit) connected to the main body unit 20, and a printer 42 (output unit) connected to the main body unit 20.

As shown in FIG. 2, the main body unit 20 includes a camera image acquisition unit 21, a settling unit 22, a test voltage / current generation unit 23, a test result output unit 24, and a control unit 25.
The relay unit 30 includes first to third relays 31 _{1 to} 31 ₃ and a relay settling unit 36 as shown in FIG.

The camera image acquisition unit 21 of the main body device unit 20 shown in FIG. 2 always captures camera image data input from the camera 40 during the unit test of the _{first to third} relays 31 _{1 to} 31 ₃ , and captures the captured camera image. Data is stored in the camera image database (camera image DB) 26.
Also, the camera image acquisition unit 21, the first to third relays 31 _{1-31 3} operation detector 34 _{1-34 3} from the first to third operation detection signal S ₁ to S ₃ are input , The name of the distribution line (first to third distribution line) corresponding to the _{first to third} operation detection signals S _{1 to} S ₃ and the time stamp (date) And time). Here, the name of the distribution line is the first, second, or third relay 31 _{1 to} 31 ₃ (distribution) including the LED lamp that is turned on among the LED lamps 35 _{1 to} 35 ₃ (operation display lamps) described later. It functions as identification data for identifying the wire relay.
The camera image data to which the name of the distribution line and the time stamp are added is stored in the test result database (test result DB) 27 by the camera image acquisition unit 21. FIG. 4 shows an example of a camera image to which the name of the distribution line and a time stamp are added.

The settling unit 22 sets the first to third relays 31 _{1 to} 31 ₃ and outputs the set values of the first to third relays 31 _{1 to} 31 ₃ to the relay settling unit 36 of the relay unit 30. The set values of the first to third relays 31 _{1 to} 31 ₃ are stored in a set value database (set value DB) 28.
Table 1 shows an example of settling values of the first to third relays 31 _{1 to} 31 ₃ .

Based on the set values of the first to third relays 31 _{1 to} 31 ₃ stored in the set value database 28, the test voltage / current generating unit 23 is connected to the first to third relays 31 _{1 to} 31 ₃ . Create test patterns for unit tests. The test voltage / current generator 23 generates a test voltage V ₀ and a test current I ₀ based on the created test pattern, and the generated test voltage V ₀ and test current I ₀ are transmitted to the first to third relays 31. Output to the relay control units 33 _{1 to} 33 ₃ of _{1 to} 31 ₃ through the V ₀ output terminal and the I ₀ output terminal, respectively. The test pattern, as exemplified in FIG. 5, the voltage value of the test voltage V _0, to near the phase value of the operating point of the current value and the test voltage V ₀ and the test current I ₀ of the test current I ₀ Is created to change rapidly and then slowly.
FIG. 6 is an image diagram showing an example of the test voltage V ₀ and the test current I ₀ .

Here, the test voltage V ₀ is input in parallel to the relay control units 33 _{1 to} 33 ₃ of the _{first to third} relays 31 _{1 to} 31 ₃ .
On the other hand, as shown in FIG. 3, the test current I ₀ is sequentially input (in series) to the relay control units 33 _{1 to} 33 ₃ of the _{first to third} relays 31 _{1 to} 31 ₃ and then I _0. It returns to the test voltage / current generator 23 via the input terminal. Thus, the wiring work is performed and the test current I ₀ is input to each of the relay control units 33 _{1 to} 33 _{3 of the first to third} relays 31 _{1 to} 31 ₃ , compared with the conventional single unit test method. A single test of the _{first to} third relays 31 _{1 to} 31 ₃ can be efficiently performed.

Moreover, test voltage and current generator 23, first to third relays 31 _{1-31 3} operation detector 34 _{1-34 3} from the first to third operation detection signal S ₁ to S ₃ are input If that, the voltage value of the test voltage V ₀ which at that time, to obtain the phase value between the current value and the test voltage V ₀ and the test current I ₀ of the test current I _0, the obtained voltage value, a current value and the phase value The data is stored in the test result database 27 in association with the distribution lines (first to third distribution lines) corresponding to the _{first to} third operation detection signals S _{1 to} S ₃ .

  The test result output unit 24 outputs the test pattern created by the test voltage / current generation unit 23 to the oscilloscope 41 (see FIG. 1) under the control of the control unit 25. Thereby, the person in charge can perform the unit test while confirming the test pattern displayed as a waveform on the oscilloscope 41.

When the test result output unit 24 receives the test result output instruction signal from the control unit 25, the test voltage V ₀ , the current value of the test current I ₀ , and the test voltage V stored in the test result database 27. _The test result data is generated based on the phase value of ₀ and the test current I ₀ , the camera image data with the distribution line name and time stamp added is read from the test result database 27, and the generated test result data The read camera image data is output to the printer 42 (see FIG. 1). As a result, the person in charge can use the first to third relays 31 _{1 to} 31 ₃ alone based on the test result printed from the printer 42 and the camera image (the distribution line name and time stamp are added). The result of the test can be obtained.

  The control unit 25 includes, for example, a central processing unit (CPU), and controls operations of the camera image acquisition unit 21, the settling unit 22, the test voltage / current generation unit 23, and the test result output unit 24.

The first relay 31 ₁ of the relay unit 30 includes a relay output unit 32 ₁ (output contact), a relay control unit 33 ₁ , an operation detection unit 34 _1, and an LED lamp (operation display lamp) 35 _1. .
The relay output unit 32 ₁ outputs a trip signal to the first circuit breaker 11 ₁ provided in the first distribution line according to the output signal of the relay control unit 33 ₁ to block the first distribution line.

Relay control unit 33 _1, the provided voltage values of the zero-phase voltage from the first to third zero-phase voltage detector provided in the generatrix of the distribution line (not shown), the first distribution line 1 current value and the zero-phase voltage of the zero-phase current from the current transformer 10 ₁ and setpoint voltage of the phase value between the zero-phase current from the relay settling unit 36, a setting value of the setting value and the phase current In comparison, the relay output unit 32 ₁ is operated within the relay operation region. Similarly, the relay control unit 33 ₁ includes the voltage value of the test voltage V ₀ , the current value of the test current I ₀ , the test voltage V _0, and the test current I ₀ from the test voltage / current generation unit 23 of the main body device unit 20. setting value of the voltage of the phase value from the relay settling unit 36 compares respectively set value of the setting value and the phase of the current, to operate the relay output portion 32 ₁ if relay operation region.

When the relay output unit 32 ₁ operates, the operation detection unit 34 ₁ turns on the LED lamp 35 ₁ and outputs the first operation detection signal S ₁ to the main body device unit 20.

The second and third relays 31 ₂ and 31 ₃ are configured in the same manner as the first relay 31 ₁ described above.

The camera 40 shown in FIG. 1 is for monitoring whether or not the LED lamps 35 _{1 to} 35 ₃ are lit when the relay output unit 32 ₁ of the _{first to third} relays 31 _{1 to} 31 ₃ is operating. Yes, camera image data representing the photographed camera image is constantly output to the main body unit 20.
The oscilloscope 41 is used for displaying a test pattern input from the test result output unit 24 of the main device unit 20.
The printer 42 is used for printout of test results and camera images represented by test result data and camera image data input from the test result output unit 24 of the main body unit 20.

  Next, the operation of the distribution line relay unit testing apparatus 1 according to the present embodiment (distribution line relay unit testing method according to one embodiment of the present invention) is based on the test pattern shown in FIG. Next, an example in which a minimum sensitivity current measurement test, which is one of unit tests, is performed will be described with reference to the flowcharts shown in FIGS.

When the person in charge inputs to the main body device section 20 using the input device (not shown) that “performs the minimum sensitivity current measurement test of the _{first to third} relays 31 _{1 to} 31 ₃ ”, the main body device section 20. The control unit 25 controls the camera image acquisition unit 21 so as to constantly capture the camera image data input from the camera 40, and also creates a test voltage / current generation unit so as to create a test pattern for the minimum sensitivity current measurement test. 23 is controlled.

The camera image acquisition unit 21 stores the captured camera image data in the camera image database 26. Further, the test voltage / current generator 23 is configured to set the voltage set value, the current set value, and the phase set value (Table 1) of the first to third relays 31 _{1 to} 31 ₃ stored in the set value database 28. 5), the voltage value of the test voltage V ₀ is fixed at 9V, the current value of the test current I ₀ is changed with time, and the phase value starts from 0 degree after time t2. And a test voltage V ₀ and a test current I ₀ are generated based on the created test pattern to generate the relay control unit 33 _{1 of the first to third} relays 31 _{1 to} 31 _3. To 33 ₃ (step S11).
At this time, the test current I ₀ is sequentially input (in series) to the relay control units 33 _{1 to} 33 ₃ of the _{first to third} relays 31 _{1 to} 31 ₃ as shown in FIG. The minimum sensitivity current measurement test (unit test) of the _{first to} third relays 31 _{1 to} 31 ₃ can be performed simultaneously.

Thereafter, at time t1 (3 pm), when the current value of the test current I ₀ becomes 2.05 mA, the relay control unit 33 ₁ of the first relay 31 ₁ determines that the current has entered the relay operation region, The relay output unit 32 ₁ is operated (step S12).

The first movement detection section ₃₄₁ of the relay 31 ₁ detects that the relay output unit 32 ₁ is operated, together with lighting the LED lamp 35 _1, the first movement detection signals S ₁ to the main unit portion 20 Output (step S13).

When the first motion detection signal S ₁ is input from the motion detection unit 34 ₁ of the first relay 31 ₁ , the camera image acquisition unit 21 of the main body device unit 20 distributes the camera image data to the camera image data input from the camera 40. After adding the name of the electric wire (first distribution line) and the time stamp (2005/06/30 15:00), it is stored in the test result database 27. When the first operation detection signal S ₁ is input from the operation detection unit 34 ₁ of the first relay 31 ₁ , the test voltage / current generation unit 23 receives the voltage value (9V) of the test voltage V ₀ at that time. stores the current value of the test current I ₀ (2.05MA) and test voltage phase value to V ₀ and the test current I ₀ a (0 °) test result database 27 (step S14).

After that, when the current value of the test current I ₀ becomes 3.01 mA at time t2, the relay control unit 33 ₂ of the second relay 31 ₂ determines that it has entered the relay operation region, and the relay output unit 32 ₂ Is operated (step S15).

When the operation detection unit 34 ₂ of the second relay 31 ₂ detects that the relay output unit 32 ₂ is operated, the LED lamp 35 ₂ is turned on, and the second operation detection signal S ₂ is sent to the main body unit 20. Output (step S16).

When the second operation detection signal S ₂ is input from the operation detection unit 342 of the _second relay 31 ₂ , the camera image acquisition unit 21 of the main body device unit 20 distributes the camera image acquisition data to the camera image data input from the camera 40. After adding the name of the electric wire (second distribution line) and the time stamp, it is stored in the test result database 27. When the second operation detection signal S ₂ is input from the operation detection unit 342 of the _second relay 31 ₂ , the test voltage / current generation unit 23 receives the voltage value (9 V) of the test voltage V ₀ at that time. stores the current value of the test current I ₀ (3.01MA) and test voltage phase value to V ₀ and the test current I ₀ a (0 °) test result database 27 (step S17).

Thereafter, after the phase value of the test voltage V ₀ and the test current I ₀ changes from 0 degrees to 30 degrees, when the current value of the test current I ₀ becomes 2.10 mA at time t3, the third relay 31 ₃ The relay control unit 33 ₃ determines that it has entered the relay operation region, and operates the relay output unit 32 ₃ (step S18).

When detecting the operation of the relay output unit 32 ₃ , the operation detection unit 34 ₃ of the third relay 31 ₃ turns on the LED lamp 35 ₃ and sends the third operation detection signal S ₃ to the main body unit 20. Output (step S19).

When the third operation detection signal S ₃ is input from the operation detection unit 34 ₃ of the third relay 31 ₃ , the camera image acquisition unit 21 of the main body device unit 20 distributes the camera image data to the camera image data input from the camera 40. After adding the name of the electric wire (third distribution line) and the time stamp, it is stored in the test result database 27. Further, when the third operation detection signal S ₃ is input from the operation detection unit 34 ₃ of the third relay 31 ₃ , the test voltage / current generation unit 23 receives the voltage value (9 V) of the test voltage V ₀ at that time. stores the current value of the test current I ₀ (2.10MA) and test voltage phase value to V ₀ and the test current I ₀ (30 degrees) test result database 27 (step S20).

When the minimum sensitivity current measurement test of the _{first to} third relays 31 _{1 to} 31 ₃ is completed as described above, the person in charge instructs “output of the minimum sensitivity current measurement test result” using the input device. An instruction signal is input to the main device unit 20.
The control unit 25 of the main unit 20 generates a minimum sensitivity current measurement test result output instruction signal based on this instruction signal, and outputs the generated minimum sensitivity current measurement test result output instruction signal to the test result output unit 24 ( Step S21).

In response to the minimum sensitivity current measurement test result output instruction signal, the test result output unit 24 stores the voltage value of the test voltage V _{0 and} the current of the test current I ₀ stored in the test result database 27 during the minimum sensitivity current measurement test. After reading the value and the phase value of the test voltage V ₀ and the test current I ₀ , the minimum sensitivity current measurement test result data is generated based on the read voltage value, current value, and phase value. The test result output unit 24 reads the camera image data stored in the test result database 27 during the minimum sensitivity current measurement test.
Subsequently, the test result output unit 24 outputs the generated minimum sensitivity current measurement test result data and the read camera image data to the printer 42 (step S22).

Thereby, the person in charge refers to the minimum sensitivity current measurement test result table as shown in Table 2 printed out by the printer 42, and the test voltage at the time of operation of the _{first to third} relays 31 _{1 to} 31 ₃ is obtained. the voltage value of V _0, with the phase value can be confirmed by a numerical value between the current value and the test voltage V ₀ and the test current I ₀ of the test current I _0, with reference to the camera image to be printed out by the printer 42 Whether the LED lamps 35 _{1 to} 35 ₃ are normally lit during the operation of the _{first to} third relays 31 _{1 to} 31 ₃ can be confirmed by an image.

As a method for inputting the test current I ₀ sequentially (in series) to the relay control units 33 _{1 to} 33 ₃ of the _{first to third} relays 31 _{1 to} 31 ₃ , for example, as shown in FIG. Windings for zero-phase current from the _first to _third current transformers 10 ₁ to 10 ₃ and a test current from the main body unit 20 are disposed on the primary side of the transformers provided in the control units 33 _{1 to} 33 ₃ , respectively. A winding for I ₀ may be wound and the winding for test current I _{0 of} relay control units 33 _{1 to} 33 ₃ may be connected in series.

  In the above description, the oscilloscope 41 and the printer 42 are used. However, when the unit test control system is connected to the main body apparatus unit 20 for remote control, the test apparatus stores the test pattern data, test result data, and camera image data. The test pattern, the test result, and the camera image may be displayed on the terminal device provided in the unit test control system by transmitting from the unit 20 to the unit test control system.

In addition, when it is necessary to perform a unit test using a meter having a predetermined accuracy according to regulations, a voltmeter 61 (test voltage measuring meter) for measuring the voltage value of the test voltage V ₀ , a test current body the phase meter 63 (instrument phase measurement) for measuring the phase value of the ammeter 62 (test current measuring meter) and test voltage V ₀ and the test current I ₀ for measuring a current value of I ₀ internal or externally attached to the device unit 20, the voltage value of the test voltage V _0, the test current voltmeter 61 the phase value between the current value and the test voltage V ₀ and the test current I ₀ of I _0, the ammeter 62 and the phase While displaying on the meter 63, the camera 40 is used to photograph voltmeters, ammeters, and phase meters during operation of the relay output units 32 _{1 to} 32 ₃ of the _{first to third} relays 31 _{1 to} 31 _3. Also good. FIG. 10 shows an example of a camera image taken using the camera 40 when the voltmeter 61, the ammeter 62 and the phase meter 63 are built in the main body device unit 20.

  Further, for example, when remote control is performed by connecting a unit test control system to the main unit 20, as shown in FIG. 11, a set value transmitted to the main unit 20 from the unit test control system wirelessly or by wire. A transmission control unit 81 for receiving a change signal (a signal for changing the set value obtained by the settling unit 22) is provided, and the test voltage / current generation unit 23 sets the set value obtained by the settling unit 22 Alternatively, the test pattern may be created based on the set value changed according to the set value change signal received by the transmission control unit 81.

Furthermore, the control unit 25 of the main body device unit 20 is operated, for example, by an operation mode input from the unit test control system via the transmission control unit 81. The state in which the devices 11 _{1 to} 11 ₃ are shut off) and the test mode (the first to third circuit breakers 11 _{1 to} 11 ₃ are securely disconnected so that the _first to _third circuit breakers 11 _{1 to} 11 ₃ are not cut off). The _{first to third} relays are caused to output a test current I ₀ to the test voltage / current generator 23 on the basis of a mode switching signal for switching the relays 31 _{1 to} 31 ₃ to a state in which a single unit test can be performed). 31 _1-31 together to implement the _third unit test, and confirming whether the operation mode or the test mode mode information, the image data name and the time stamp of the distribution line is added, the voltage value of the test voltage V _0, the test May be transmitted via the transmission control unit 81 and the test data including a phase value between the current value and the test voltage V ₀ and the test current I ₀ of the flow I ₀ to a single test control system (external) (upload).

Furthermore, the control unit 25 of the main body device unit 20 does not output a trip signal to the _first to _third circuit breakers 11 _{1 to} 11 ₃ during the unit tests of the _{first to third} relays 31 _{1 to} 31 _3. the first to third relays 31 _1-31 first to third relay output unit 321 _to 323 of the ₃ by controlling the on, first at the time of a single test of the first to third relays 31 _{1-31 3} The first to third circuit breakers 11 _{1 to} 11 ₃ may not block the _first to _third distribution lines.
Conversely, the control unit 25 of the main body device unit 20 outputs a trip signal to the _first to _third circuit breakers 11 _{1 to} 11 ₃ during the unit tests of the _{first to third} relays 31 _{1 to} 31 _3. the first to third relays 31 _1-31 first to third relay output unit 321 _to 323 of the ₃ by controlling the actual interruption tests of the first to third circuit breaker 11 ₁ to 11 ₃ May be performed.

  Furthermore, although a ground fault direction relay is used as a test object, a single unit test can be similarly performed for other distribution line relays such as an overvoltage relay.

  As described above, the distribution line relay unit test apparatus and the distribution line relay unit test method of the present invention can be used to perform unit tests of a number of ground fault direction relays, for example.

It is a figure which shows the structure of the distribution line relay unit test apparatus by one Example of this invention. It is a figure which shows the structure of the main body apparatus part 20 shown in FIG. It is a figure which shows the structure of the relay part 30 shown in FIG. It is a figure which shows an example of the camera image to which the name and time stamp of the distribution line were added. It is a figure which shows an example of a test pattern. Is an image diagram illustrating an example of the test voltage V ₀ and the test current I _0. It is a flowchart for demonstrating operation | movement of the distribution line relay single unit test apparatus shown in FIG. It is a flowchart for demonstrating operation | movement of the distribution line relay single unit test apparatus shown in FIG. The test current I ₀ is a diagram for explaining an example of the first to third relays 31 ₁ sequentially (in series) to -31 ₃ of the relay control unit 24 _{1-24 3} how to type. 4 is a diagram illustrating an example of a camera image photographed using the camera 40 when the voltmeter 61, the ammeter 62, and the phase meter 63 are built in the main body device unit 20. FIG. FIG. 6 is a diagram illustrating another configuration of the main body device unit 20.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Distribution line relay unit test device 2 Relay panel 10 ₁ -10 ₃ Current transformer 11 ₁ -11 ₃ Circuit breaker 20 Main body device part 21 Camera image acquisition part 22 Settling part 23 Test voltage / current generation part 24 Test result output part 25 Control unit 26 Camera image database 27 Test result database 28 Setting value database 30 Relay units 31 _{1 to} 31 ₃ relay (ground fault direction relay)
321 _to 323 relay output unit 33 _to 333 relay control unit 34 ₁ to 34 ₃ operate detector 35 ₁ to 35 ₃ LED lamps 36 relay settling section 40 camera 41 oscilloscope 42 printer 61 voltmeter 62 ammeter 63 phase meter 81 Transmission control part S11-S22 Step t1-t3 Time

Claims (14)

A distribution line relay test device for performing a single test of a large number of distribution line relays (31 ₁ , 31 ₂ , 31 ₃ ),
A main body unit (20) that is incorporated in the relay panel (2) and includes test current generating means for generating a test current (I ₀ );
A relay unit (30) incorporated in the relay panel and provided with the plurality of distribution line relays;
Comprising
Each of the plurality of distribution line relays includes a relay output means (32 ₁ , 32 ₂ , 32 ₃ ) and a relay control means (33 ₁ , 33 ₂ , 33 ₃ ) for operating the relay output means,
The test current generating means inputs the test current in series to the relay control means of the multiple distribution line relays.
Distribution line relay test device characterized by that. Each of the multiple distribution line relays is
An operation display lamp (35 ₁ , 35 ₂ , 35 ₃ ) for indicating that the relay output means has been operated;
An operation detecting means (34 ₁ , 34 ₂ , 34 ₃ ) that, when detecting the operation of the relay output means, turns on the operation display lamp and outputs an operation detection signal to the main body unit;
The distribution line relay test apparatus further comprises imaging means (40) for photographing the operation display lamps of the multiple distribution line relays,
When the operation detection signal is input from the operation detection unit, the main body unit part is used for specifying a distribution line relay having an operation display lamp that is lit in the image data input from the imaging unit. Image acquisition means (21) for adding data and a time stamp;
When the operation detection signal is input from the operation detection unit, the test current generation unit acquires a current value of the test current when the operation detection signal is input.
The distribution line relay test apparatus according to claim 1, wherein: A test current measuring instrument (62) that is built in or externally attached to the main unit and for measuring the current value of the test current;
The imaging means also images the test current measuring instrument,
The distribution line relay test apparatus according to claim 2, wherein:   The main body unit outputs the test data output to which the image data to which the specifying data and the time stamp are added by the image acquisition unit and the current value of the test current acquired by the test current generation unit are output to the outside. The distribution line relay test device according to claim 2, further comprising means. The test current generating means generates the test current based on a test pattern;
The distribution line relay test device is
Waveform observing means (41) for displaying the test pattern inputted from the test current generating means;
Output means for outputting an image represented by the specifying data input from the test result output means and image data to which a time stamp is added, and a current value of the test current input from the test result output means (42)
The distribution line relay test apparatus according to claim 4, wherein: The main body unit sets the distribution line relay to settling means (22) for determining the settling value of the distribution line relay, and a set value change signal for changing the settling value obtained by the setting means. Transmission control means (81) for receiving,
The test current generating means creates the test pattern based on a set value obtained by the settling unit or a set value changed according to a set value change signal received by the transmission control means,
The distribution line relay testing device according to claim 5, wherein:   The main body unit outputs a test current to the test current generating unit based on a mode switching signal for switching between an operation mode and a test mode input via the transmission control unit, and the plurality of distribution line relays. Control means (25) for causing the unit test to be performed and transmitting the test data including the mode confirmation information of the operation mode or the test mode, the image data, and the current value of the test current to the outside via the transmission control means. The distribution line relay test apparatus according to claim 6, further comprising: The relay output means of the multiple distribution line relays is configured so that the control means does not output a trip signal to the multiple circuit breakers (11 _{1 to} 11 ₃ ) during a single test of the multiple distribution line relays. The distribution line relay test apparatus according to claim 7, wherein the distribution line relay test apparatus is controlled.   The control means controls the relay output means of the multiple distribution line relays so as to output a trip signal to the multiple circuit breakers during a single test of the multiple distribution line relays. The distribution line relay test device according to claim 7, wherein an actual circuit break test of the circuit breaker is performed. When the main body unit generates a test voltage (V ₀ ) and a test current with different phases instead of the test current generating unit, and the operation detection signal is input from the operation detection unit, A test voltage / current generation means (23) is provided for acquiring a voltage value of a test voltage, a current value of a test current, and a phase value of the test voltage and the test current when the operation display lamp is turned on. The distribution line relay test device according to any one of claims 2 to 9. The main unit (20) having a test current generating means for generating a test current (I ₀ ) and the relay unit (30) having a number of distribution line relays (31 ₁ , 31 ₂ , 31 ₃ ) are relayed. Incorporated into the board (2)
The test current from the test current generating means is input in series to the relay control means (33 ₁ , 33 ₂ , 33 ₃ ) of the multiple distribution line relays, and the relay control means of the multiple distribution line relays The relay output means (32 ₁ , 32 ₂ , 32 ₃ ) of a number of distribution line relays is operated to perform a unit test of the number of distribution line relays.
Distribution line relay test method characterized by the above. When the operation detecting means (34 ₁ , 34 ₂ , 34 ₃ ) of the multiple distribution line relays detects the operation of the relay output means of the multiple distribution line relays, the operation display of the multiple distribution line relays Lighting the lamps (35 ₁ , 35 ₂ , 35 ₃ ) and outputting an operation detection signal to the main body unit (S13, S16, S19);
When the operation detection signal is input from the operation detection means of the plurality of distribution line relays, the image acquisition unit (21) of the main body apparatus unit photographs the operation display lamps of the plurality of distribution line relays. (S14, S17, S20) for adding specifying data and a time stamp for specifying a distribution line relay having a lit operation display lamp to the image data input from the imaging means (40) for ,
When the test current generation means of the main body unit receives the operation detection signal from the operation detection means of the plurality of distribution line relays, the current value of the test current when the operation detection signal is input is obtained. Obtaining steps (S15, S18, S21);
The distribution line relay test method according to claim 11, comprising:   The test result output means of the main body unit externally outputs the image data to which the specifying data and the time stamp are added by the image acquisition means, and the current value of the test current acquired by the test current generation means. 13. The distribution line relay test method according to claim 12, further comprising an output step (S22). The main unit generates a test voltage (V ₀ ) and a test current (I ₀ ) with different phases instead of the test current generation means, and the operation detection signal is input from the operation detection means. Then, the test voltage / current generating means (23) for obtaining the voltage value of the test voltage when the operation display lamp is lit, the current value of the test current, and the phase value of the test voltage and the test current,
The test voltage / current generation means inputs the test current in series to the relay control means of the multiple distribution line relays and inputs the test voltage in parallel to detect operation of the multiple distribution line relays. When the operation detection signal is input from the means, the voltage value of the test voltage when the operation detection signal is input, the current value of the test current, and the phase value of the test voltage and the test current are acquired,
The test result output unit of the main body unit includes image data to which the specifying data and a time stamp are added by the image acquisition unit, a voltage value of the test voltage acquired by the test voltage / current generation unit, Outputting the current value of the test current and the phase value of the test voltage and the test current to the outside;
The distribution line relay test method according to claim 12 or 13, characterized in that:

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