Voltage-Time Type Distribution Automation Terminal Tester

Abstract

The present invention discloses a voltage-time type distribution automation terminal tester, which is characterized in that: it includes a carrier for integrating multiple electronic components by the carrier; the above-mentioned electronic components include: a main control unit ln for loading a PLC program by the main control unit ln; a power supply module U is provided on one side of the above-mentioned main control unit ln, the power supply module U is connected to the total power input port A, an air switch QF is provided between the total power input port and the power supply module U, a transformer D is provided on one side of the power supply module U, and the transformer D is connected in parallel with the power supply module U to access the air switch QF, so as to optimize the problem that the action logic of multiple terminal distribution terminals cannot be detected when detecting the equipment before the commissioning of the complete set of equipment.

Description

Technical Field

[0001] The invention relates to distribution network automation terminal detection, and in particular to a voltage-time type distribution network automation terminal tester. Background Art

[0002] As personnel gradually become more proficient in their skills, the time spent on terminal constant setting, point meter configuration and other operations in the entire distribution automation terminal debugging has basically stabilized. However, the final link of the distribution automatic terminal action logic test is time-consuming and the use of relay protection testing cannot perform logic tests on several terminals at the same time, which seriously restricts the efficiency of automated terminal detection.

[0003] Although commonly used relay protection testers can provide two sets of power supply voltages, they cannot bear the effective load when testing two automation terminals at the same time. The actual action logic test operation can only adopt a "one-to-one" test mode, that is, a relay protection tester can only be connected to one automation terminal for testing at the same time.

[0004] In the past, the distribution network automation terminal required a microcomputer relay protection tester to provide it with power supply voltage, but the physical connection methods of the relay protection tester and the distribution network automation switch terminal were completely different, resulting in the relay protection tester and the automation terminal being unable to be directly connected. A conversion terminal block had to be installed between the two as a connection hub, which invisibly increased the number of wiring times and consumed operation time.

[0005] At the same time, the relay protection tester can only ensure that the logic settings and actions of each terminal are correct, but it cannot connect more than two distribution automation switch terminals on a line in series for logic verification to check whether their overall time action logic is consistent with the settings. The integrity of the logic test needs to be improved, so the research and development of automated terminal debugging equipment is necessary. Summary of the invention

[0006] The purpose of the present invention is to provide a voltage-time type distribution automation terminal tester, in order to optimize the problem that the action logics of multiple terminal distribution terminals cannot be tested when testing the equipment before the complete set of equipment is put into operation.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A voltage-time type distribution automation terminal tester, characterized in that: it includes a carrier for integrating multiple electronic components by the carrier; the above-mentioned electronic components include: a main control unit ln for loading a PLC program by the main control unit ln; a power module U is provided on one side of the main control unit ln, the power module U is connected to the total power input port A, an air switch QF is provided between the total power input port and the power module U, a transformer D is provided on one side of the power module U, and the transformer D is connected in parallel with the power module U to access the air switch QF for simulating the outlet circuit breaker of the substation by the air switch QF. A five-core aviation plug JD5, a three-core aviation plug JD3 for docking the load side of the terminal, and a two-core aviation plug JD2 for connecting the circuit breaker are configured on the above-mentioned carrier. A first relay is provided between the five-core aviation plug JD5 and the transformer D, and both ends of the first relay are respectively connected to the transformer D and the five-core aviation plug JD5. A second relay and a third relay are provided at the end of the air switch QF, the second relay is connected to the five-core aviation plug JD5, the third relay is connected to the three-core aviation plug JD3, and the output ends of the main control unit ln are respectively connected to the second relay and the third relay. The two-core aviation plug JD2 is connected to the input end of the main control unit ln.

[0009] Preferably, the number of the above-mentioned three-core aviation plugs JD3 corresponds to the number of the five-core aviation plugs JD5, and both the second relay and the third relay are connected to the programmable output relay Y of the main control unit ln for controlling the on and off of the second relay and the third relay by the main control unit ln.

[0010] Preferably, one port of the above-mentioned two-core aviation plug JD2 is connected to the COM port of the main control unit ln, and the other is connected to the programmable input relay X of the main control unit ln.

[0011] Preferably, there are multiple first relays, including relay KA9, relay KA10, relay KA11, relay KA12. The relay KA9, relay KA10, relay KA11, relay KA12 are connected in parallel to the transformer D, and both ends of the relay KA9, relay KA10, relay KA11, relay KA12 are respectively connected to the transformer D and the five-core aviation plug JD5.

[0012] A further technical solution is that the above-mentioned first relay is provided with a grounding wire, and a hole of the five-core aviation plug JD5 is connected to the grounding wire of the first relay.

[0013] Preferably, there are multiple second relays, including relay KA1, relay KA3, relay KA5, and relay KA7. The relays KA1, KA3, KA5, and KA7 are connected in parallel to the air switch QF, and both ends of the relays KA1, KA3, KA5, and KA7 are respectively connected to the air switch QF and different five-core aviation plugs JD5.

[0014] Preferably, the third relay includes relay KA2, relay KA4, relay KA6, and relay KA8. The relays KA2, KA4, KA6, and KA8 are connected to the three-core aviation plug JD3.

[0015] Preferably, the two-core aviation plug JD2 is clamped to both ends of the incoming line side and the outgoing line side of the circuit breaker body by alligator clips to transmit the circuit breaker opening and closing signals; there is an indicator light between the five-core aviation plug JD5 and the three-core aviation plug JD3, which is used to indicate that the switches of the first relay and the second relay have been closed and powered to the load side of this switch by the indicator light.

[0016] Compared with the prior art, the beneficial effects of the present invention are at least one of the following:

[0017] In the present invention, through the main control unit, it is convenient to edit the time action logic of the distribution network automation switch by using the "Mitsubishi PLC programming software GX Developer". Through the combination form of multiple relays, it is convenient to conduct the logic test of the distribution network automation terminal before regular commissioning, and it can also verify the action logic of the distribution network automation switch under simulated fault conditions.

[0018] All 220V test power supplies are placed in the box through the carrier, and are applied to both sides of the switch body through the power module to form a conduction signal voltage for delayed closing when power is restored, and the conduction signal voltage is a safe voltage of 24V, making the logic test more efficient and safe.

[0019] In the present invention, through the indicator light, it is convenient to inform the operator that the switch has been closed and powered to the load side of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the present invention.

[0021] Figure 2 It is a schematic installation diagram of the five-core aviation plug of the present invention.

[0022] Figure 3 It is a schematic overall structural diagram of the present invention.

[0023] Figure 4 It is a schematic principle diagram of this application.

[0024] Description of the reference numerals:

[0025] A is the total power input port; QF is the air switch; ln is the main control unit; D is the transformer; U is the power module; JD5 is a five-core aviation plug; JD3 is a three-core aviation plug; JD2 is a two-core aviation plug; KA is the intermediate relay, and FB is the circuit breaker. Specific embodiments

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Reference Figure 1 、 Figure 2 and Figure 4 As shown in

[0028] One embodiment of the present invention includes a carrier for integrating multiple electronic components by the carrier; wherein the carrier is an existing plastic box, and the above-mentioned electronic components include a main control unit ln for loading a PLC program by the main control unit ln; wherein the main control unit ln is an existing product, which can be MM-40MR-12MT-700-FX-C, so as to facilitate the loading of the PLC programming software GX Developer to facilitate the editing of the time action logic of the distribution network automation switch.

[0029] A power module U is provided on one side of the above-mentioned main control unit ln, and the power module U is an LRS-100-24 module; it is used to convert the 220V voltage to 24V by the power module U and load it onto the main control unit ln.

[0030] An air switch QF is provided between the above-mentioned total power input port A and the power module U. The air switch QF is an existing product, such as an Acti9 IC65N 2P 6A air switch, so that the air switch QF controls the opening and closing of the total power input port A.

[0031] A transformer D is provided on one side of the above-mentioned power module U. The above-mentioned transformer D is connected in parallel with the power module U to the air switch QF. The transformer D is an existing product, and its usage standard is a 30w transformer, which is used to convert 220v to dual 18v voltage, that is, the transformer D converts the 220V voltage input to the power module U to dual 18V voltage.

[0032] A five-core aviation plug JD5 for docking the power supply side of the terminal, a three-core aviation plug JD3 for docking the load side of the terminal, and a two-core aviation plug JD2 for connecting the circuit breaker are configured on the above-mentioned carrier;

[0033] Among them, the five-core aviation plug JD5 is connected to the PT aviation socket on the power supply side of the distribution automation terminal through a 5-core PT cable; among them, the three-core aviation plug JD3 is connected to the PT aviation socket on the load side of the distribution automation terminal, and among them, the two-core aviation plug JD2 is connected to the circuit breaker through a conduction signal line.

[0034] A first relay is provided between the above-mentioned five-core aviation plug JD5 and the transformer D. The two ends of the first relay are respectively connected to the transformer D and the five-core aviation plug JD5. A second relay and a third relay are provided at the end of the air switch QF. The second relay is connected to the five-core aviation plug JD5, and the third relay is connected to the three-core aviation plug JD3. The output end of the main control unit ln is respectively connected to the second relay and the third relay. The two-core aviation plug JD2 is connected to the input end of the main control unit ln; among them, all 220V circuits are concentrated inside the carrier, and the safety conduction signal voltage for detection is 24V, effectively replacing the original transfer voltage of 220V / 100V applied on both sides of the switch body, making the logical detection operation process safer.

[0035] When the air switch QF is closed, the PT1 of the distribution terminal 1 detects the voltage. At the same time, the distribution terminal 1 transmits the converted 24V from 220V to the closing coil of the circuit breaker FB1 through the control cable. Usually, the circuit breaker FB1 closes after 21 seconds. The PT2 of the distribution terminal 1 detects the voltage and transmits the power to the PT1 of other distribution terminals again; and so on, producing a delayed closing effect, that is, the power is transmitted to the last distribution terminal step by step through the distribution terminal according to the form of closing with voltage delay and opening with no voltage.

[0036] The main control unit ln records the closing time through the program, and determines whether the distribution network is normal according to the required closing time according to the design theory and the actual closing state.

[0037] Based on the above embodiments, referring to Figure 3 As shown, another embodiment of the present invention is that the number of the above-mentioned three-core aviation plugs JD3 corresponds to the number of the five-core aviation plugs JD5. The second relay and the third relay are both connected to the programmable output relay Y of the main control unit ln, and are used to control the on and off of the second relay and the third relay by the main control unit ln.

[0038] The logical time setting can be carried out through the main control unit ln. There are four five-core aviation plugs JD5, namely five-core aviation plug JD5-1, five-core aviation plug JD5-2, five-core aviation plug JD5-3, five-core aviation plug JD-4 and five-core aviation plug JD5-5. The above three-core aviation plug JD3 corresponds to the five-core aviation plug JD5, namely three-core aviation plug JD3-1, three-core aviation plug JD3-2, three-core aviation plug JD3-3 and three-core aviation plug JD3-4. The two-core aviation plugs JD2 are respectively two-core aviation plug JD2-1, two-core aviation plug JD2-2, two-core aviation plug JD2-3 and two-core aviation plug JD2-4.

[0039] Specifically, five-core aviation plug JD5-1, three-core aviation plug JD3-1 and two-core aviation plug JD2-1 form a working group; five-core aviation plug JD5-2, three-core aviation plug JD3-2 and two-core aviation plug JD2-2 form a working group; and so on, forming multiple working groups. Each working group is respectively connected to a terminal and a circuit breaker corresponding to the terminal.

[0040] It should be noted that both the terminal and the circuit breaker are existing devices, and they are connected by a control cable.

[0041] Furthermore, one port of the above two-core aviation plug JD2 is connected to the COM port of the main control unit ln, and the other is connected to the programmable input relay X of the main control unit ln.

[0042] By connecting the two-core aviation plug JD2 to the COM port of the main control unit ln, it is convenient for the circuit breaker FB to input delay data into the main control unit ln after accessing the two-core aviation plug JD2.

[0043] Based on the above embodiments, another embodiment of the present invention is that there are multiple first relays, including relay KA9, relay KA10, relay KA11, relay KA12. The above relays KA9, KA10, KA11, KA12 are connected in parallel to the transformer D. The two ends of the above relays KA9, KA10, KA11, KA12 are respectively connected to the transformer D and the five-core aviation plug JD5. The five-core aviation plug JD5 loop is controlled by the first relay, so as to achieve the effect of delay control.

[0044] Furthermore, the above first relay is provided with a ground wire, and one hole of the five-core aviation plug JD5 is connected to the ground wire of the first relay.

[0045] Based on the above embodiments, another embodiment of the present invention is that there are multiple second relays, including relay KA1, relay KA3, relay KA5, and relay KA7. The relay KA1, relay KA3, relay KA5, and relay KA7 are connected in parallel to the air switch QF, and both ends of the relay KA1, relay KA3, relay KA5, and relay KA7 are respectively connected to the air switch QF and different five-core aviation plugs JD5.

[0046] Based on the above embodiments, another embodiment of the present invention is that the third relay includes relay KA2, relay KA4, relay KA6, and relay KA8, and the relay KA2, relay KA4, relay KA6, and relay KA8 are connected to the three-core aviation plug JD3

[0047] Based on the above embodiments, another embodiment of the present invention is that an alligator clip is used to connect between the five-core aviation plug JD5 and the three-core aviation plug JD3, and an indicator light is provided between the five-core aviation plug JD5 and the three-core aviation plug JD3, which is used to indicate that the switches of the first relay and the second relay have been closed and powered to the load side of this switch.

[0048] The circuit breaker is an existing circuit breaker with time function. The indicator light L includes a power supply voltage light and a load voltage light. When the power supply voltage light of the circuit breaker FB1 lights up, the timer of the circuit breaker FB1 starts timing and reading at the same time. When the preset time limit at the terminal is reached, the circuit breaker FB1 closes, and the load voltage light of the circuit breaker FB1 lights up; at the same time, the time limit data is recorded by the main control unit ln, and its power supply is transmitted to the power distribution terminal 2 again.

[0049] When the power supply is transmitted to the power distribution terminal 2, the power supply voltage light of the circuit breaker FB2 lights up, and the timer of the circuit breaker FB2 starts timing and reading at the same time. When the preset time limit at the terminal is reached, then the circuit breaker FB2 closes, and the load voltage light of the circuit breaker FB2 lights up; at the same time, the time limit data is recorded by the main control unit ln, and its power supply is transmitted to the power distribution terminal 3 again.

[0050] Subsequently, when the power supply voltage light of the circuit breaker FB3 lights up, the timer of the circuit breaker FB3 starts timing and reading at the same time. When the preset time limit at the terminal is reached, the circuit breaker FB3 closes, and the load voltage light of the circuit breaker FB3 lights up; and so on, the detection of multiple power distribution terminals can be realized.

[0051] If the time limit recorded by the timer of one of the circuit breakers FB is inconsistent with the preset time limit at the terminal, there is a fault in the corresponding distribution network line of the current circuit breaker FB and it needs to be repaired.

[0052] As used in this specification, "one embodiment", "another embodiment", "an embodiment", "a preferred embodiment", etc. refer to specific features, structures, or characteristics described in connection with that embodiment being included in at least one embodiment generally described in this application. The same expression occurring in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure, or characteristic in connection with any embodiment, it is intended that the implementation of such feature, structure, or characteristic in combination with other embodiments also fall within the scope of the present invention.

[0053] Although the present invention has been described herein with reference to various illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and embodiments that will fall within the scope of the principles disclosed in this application. More specifically, within the scope of the disclosure, the drawings, and the claims of this application, various variations and improvements can be made to the components and / or layout of the subject combination layout. In addition to the variations and improvements to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A voltage-time type distribution automation terminal tester, comprising a carrier for integrating multiple electronic components by the carrier; the electronic components include a main control unit (ln) for loading a PLC program by the main control unit (ln); It is characterized in that: A power supply module (U) is provided on one side of the main control unit (ln). The power supply module (U) is connected to the total power input port (A). An air switch (QF) is provided between the total power input port (A) and the power supply module (U). A transformer (D) is provided on one side of the power supply module (U). The transformer (D) and the power supply module (U) are connected in parallel to the air switch (QF). A five-core aviation plug (JD5) for docking the power supply side of the terminal, a three-core aviation plug (JD3) for docking the load side of the terminal, and a two-core aviation plug (JD2) for connecting the circuit breaker are configured on the carrier. A first relay is provided between the five-core aviation plug (JD5) and the transformer (D). Both ends of the first relay are connected to the transformer (D) and the five-core aviation plug (JD5) respectively. A second relay and a third relay are provided at the end of the air switch (QF). The second relay is connected to the five-core aviation plug (JD5), and the third relay is connected to the three-core aviation plug (JD3). The output ends of the main control unit (ln) are respectively connected to the second relay and the third relay. The two-core aviation plug (JD2) is connected to the input end of the main control unit (ln); Both the second relay and the third relay are connected to the programmable output relay Y of the main control unit (ln) for controlling the on-off of the second relay and the third relay by the main control unit (ln); One port of the two-core aviation plug (JD2) is connected to the COM port of the main control unit (ln), and the other is connected to the programmable input relay X of the main control unit (ln); Wherein the circuit breaker is an existing circuit breaker with time function. The indicator light L includes a power supply voltage light and a load voltage light. When the power supply voltage light of the first circuit breaker FB1 lights up, the timer of the first circuit breaker FB1 starts timing and reading at the same time. When the preset time limit of the terminal is reached, the first circuit breaker FB1 closes, and the load voltage light of the first circuit breaker FB1 lights up; at the same time, the time limit data is recorded by the main control unit (ln), and its power supply is transmitted to the first distribution terminal again; When the power supply is transmitted to the first distribution terminal, the power supply voltage light of the second circuit breaker FB2 lights up, and the timer of the second circuit breaker FB2 starts timing and reading at the same time. When the preset time limit of the terminal is reached, then the second circuit breaker FB2 closes, and the load voltage light of the second circuit breaker FB2 lights up; at the same time, the time limit data is recorded by the main control unit (ln), and its power supply is transmitted to the second distribution terminal again; When the power supply voltage light of the third circuit breaker FB3 lights up, the timer of the third circuit breaker FB3 starts timing and reading at the same time. When the preset time limit of the terminal is reached, the third circuit breaker FB3 closes, and the load voltage light of the third circuit breaker FB3 lights up.

2. The voltage-time type distribution automation terminal tester according to claim 1, It is characterized in that: The number of the three-core aviation plugs (JD3) corresponds to the number of the five-core aviation plugs (JD5).

3. The voltage-time type distribution automation terminal tester according to claim 1, characterized in that: There are multiple first relays, including relay KA9, relay KA10, relay KA11 and relay KA12. The relay KA9, relay KA10, relay KA11 and relay KA12 are connected in parallel to the transformer (D), and the two ends of the relay KA9, relay KA10, relay KA11 and relay KA12 are respectively connected to the transformer (D) and the five-core aviation plug (JD5).

4. The voltage-time type distribution automation terminal tester according to claim 3, characterized in that: The first relay is provided with a grounding wire, and a hole of the five-core aviation plug (JD5) is connected to the grounding wire of the first relay.

5. The voltage-time type distribution automation terminal tester according to claim 1, characterized in that: There are multiple second relays, including relay KA1, relay KA3, relay KA5 and relay KA7. The relay KA1, relay KA3, relay KA5 and relay KA7 are connected in parallel to the air switch (QF), and the two ends of the relay KA1, relay KA3, relay KA5 and relay KA7 are respectively connected to the air switch (QF) and different five-core aviation plugs (JD5).

6. The voltage-time type distribution automation terminal tester according to claim 1, characterized in that: The third relay includes relay KA2, relay KA4, relay KA6 and relay KA8. The relay KA2, relay KA4, relay KA6 and relay KA8 are connected to the three-core aviation plug (JD3).

7. The voltage-time type distribution automation terminal tester according to claim 1, characterized in that: The two-core aviation plug (JD2) is clamped at both ends of the incoming line side and the outgoing line side of the circuit breaker body by an alligator clip. An indicator light is provided between the five-core aviation plug (JD5) and the three-core aviation plug (JD3) to indicate that the switches of the first relay and the second relay have been closed and powered to the load side of this switch by the indicator light.

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