Test system and test method for action reliability of cluster type intelligent load switch

Abstract

The invention discloses a test system and a test method for action reliability of a cluster-type intelligent load switch. The cluster type intelligent load switch action reliability test system is provided with a background monitoring main station, a data acquisition control card, a molded case circuit breaker, a contactor cluster, an adjustable load, a temperature measurement sensor, a voltage transformer, a current transformer, a temperature measurement sensor, a scram button, an indicating lamp, a buzzer and a fan. According to the test system and the test method for the action reliability of the cluster type intelligent load switch, the action reliability of a plurality of tested intelligent load switches can be automatically tested and monitored in real time, the test data is displayed and stored in real time, the test result is judged, and the test report is automatically generated through one-time wiring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent load switch, and particularly relates to a cluster type intelligent load switch action reliability test system and a cluster type intelligent load switch action reliability test method. BACKGROUND

[0002] The intelligent load switch (hereinafter referred to as switch) is a device with high switching frequency and capable of monitoring load conditions and controlling circuit on-off in real time, mainly used for monitoring power consumption in school dormitories. The switch can not only monitor the power consumption in dormitories in real time, but also intelligently identify whether there is irregular power consumption, such as using high-power electrical appliances prohibited by the school, such as electric rice cookers, etc. The switch can intelligently control the power consumption in dormitories according to the monitored power consumption, such as automatically disconnecting the power supply in dormitories when the power consumption in dormitories exceeds the set alarm load value within a period of time, and reconnecting the power supply after a period of time. When the power supply is reconnected, the switch will monitor the power consumption again, and if irregular power consumption is detected, the switch will permanently disconnect the power supply in the dormitory. After safety inspection, the administrator controls the dormitory to reconnect the power supply.

[0003] The switch has a wireless communication function, which can send the monitored power consumption, such as power supply voltage, load current, switch state, etc., to the background master station in real time through wireless mode, so as to facilitate the administrator to monitor the power consumption in the entire dormitory. The reliability of switch action is related to the safety of power supply in dormitories, but in order to prevent non-administrators from operating the switch privately, the switch itself does not have a manual operation function and display function, and the on-off of the switch is only controlled by the background master station to turn on and off, which makes it difficult to automatically test the reliability of switch action.

[0004] The conventional test method for the action reliability of the intelligent load switch in the prior art is manual operation, which has a long test cycle, and the entire test process cannot be monitored in real time and in a closed loop. In addition, the test process needs to be monitored manually, the test results need to be recorded, calculated and judged manually, and the accuracy of the test data and the reliability of the test results cannot be reliably ensured. The main shortcomings of this conventional test method for the action reliability of the intelligent load switch are: 1. The manual monitoring of the switch action state and system state during the test process requires a large investment in labor costs; 2. The entire test process cannot be monitored in real time and in a closed loop, which cannot guarantee the accuracy of the test results; 3. The test process data, test result determination and test report preparation can only be performed manually, which may cause certain human error and may lead to unnecessary repeated tests, which is not conducive to improving the efficiency and reliability of the test; 4. The abnormal conditions during the test process cannot be found and handled in the first time, which is not conducive to improving the safety during the test process. The main shortcomings of the existing scheme are the lack of a professional test system, which leads to low test efficiency of the intelligent load switch action reliability and cannot guarantee the reliability and safety during the test process.

[0005] Therefore, in view of the deficiencies in the prior art, it is necessary to provide a cluster type intelligent load switch action reliability test system and a cluster type intelligent load switch action reliability test method to solve the deficiencies in the prior art. SUMMARY

[0006] One of the purposes of the present application is to provide a cluster type intelligent load switch action reliability test system to avoid the deficiencies in the prior art. The cluster type intelligent load switch action reliability test system can realize automatic testing, real-time monitoring, real-time display and storage of test data, test result determination, and automatic generation of test reports of the action reliability of multiple tested intelligent load switches through one wiring.

[0007] The above purposes of the present application are achieved by the following technical measures:

[0008] A cluster type intelligent load switch action reliability test system is provided, which is provided with:

[0009] A background monitoring master station is provided for setting test parameters, controlling the operation of a contactor cluster through a data acquisition control card, collecting test data of the data acquisition control card, generating a test report according to the test data, and displaying the test data in real time; and monitoring the state of the tested intelligent load switch.

[0010] The data acquisition control card is provided for collecting ABC three-phase voltage data of the output side of a molded case circuit breaker through a voltage transformer; collecting ABC three-phase current of the output side of the molded case circuit breaker through a current transformer; collecting temperature data of the tested intelligent load switch through a temperature sensor; controlling the operation of the contactor cluster, a buzzer, and an indicator light, and monitoring the state of an emergency stop button.

[0011] The molded case circuit breaker is provided for providing a power source for testing the tested intelligent load switch.

[0012] The contactor cluster is provided for providing a test circuit for the tested intelligent load switch.

[0013] The adjustable load is provided for adjusting the current and the characteristics.

[0014] The temperature sensor is provided for monitoring the temperature data of the tested intelligent load switch in real time.

[0015] The voltage transformer is provided for monitoring the ABC three-phase voltage data of the output side of the molded case circuit breaker in real time.

[0016] The current transformer is provided for monitoring the ABC three-phase current data of the output side of the molded case circuit breaker in real time.

[0017] The emergency stop button is provided for disconnecting all circuits of the contactor cluster when an abnormality occurs; and the indicator light is provided for indicating the state of the test system.

[0018] Buzzer——to give an alarm when there is an abnormality in the test system;

[0019] Fan——to cool the adjustable load.

[0020] Preferably, the above data acquisition control card is provided with:

[0021] Analog quantity acquisition unit——to acquire ABC three-phase voltage data on the output side of the molded case circuit breaker through the voltage transformer; to acquire three-phase current of ABC on the output side of the molded case circuit breaker through the current transformer; to acquire temperature data of the measured intelligent load switch through the temperature sensor;

[0022] Switching quantity output unit——to control the contactor cluster, the buzzer, the indicator light and the fan to work;

[0023] Switching quantity input unit——to monitor the state of the emergency stop button and the output state of the switching quantity output unit.

[0024] Preferably, one output of the above switching quantity output unit is connected in parallel with the emergency stop button.

[0025] Preferably, the above contactor cluster is provided with 6 intelligent switch test loops, which are defined as loop 1, loop 2, loop 3, loop 4, loop 5 and loop 6 respectively.

[0026] Preferably, the loop 1 and the loop 2 are connected with phase A of the molded case circuit breaker, and the loop 1 and the loop 2 are provided with interlocking function.

[0027] Preferably, the loop 3 and the loop 4 are connected with phase B of the molded case circuit breaker, and the loop 3 and the loop 4 are provided with interlocking function.

[0028] Preferably, the loop 5 and the loop 6 are connected with phase C of the molded case circuit breaker, and the loop 5 and the loop 6 are provided with interlocking function.

[0029] Preferably, the above contactor cluster is provided with 6 contactors, each of which is connected with a control loop of the switching quantity output unit, and each of which is connected with a measured intelligent load switch, the contactor coil of each of which is AC220V, and each of which contains a set of normally open contacts and a set of normally closed contacts.

[0030] The 6 contactors are defined as contactor 1, contactor 2, contactor 3, contactor 4, contactor 5 and contactor 6 respectively.

[0031] Preferably, the contactor 1 is located in the circuit 1, the contactor 2 is located in the circuit 2, and the contactor 1 and the contactor 2 are a group of interlocking contactors.

[0032] Preferably, the contactor 3 is located in the circuit 3, the contactor 4 is located in the circuit 4, and the contactor 3 and the contactor 4 are a group of interlocking contactors.

[0033] Preferably, the contactor 5 is located in the circuit 5, the contactor 6 is located in the circuit 6, and the contactor 5 and the contactor 6 are a group of interlocking contactors.

[0034] Preferably, three adjustable loads are provided, one adjustable load is connected with the contactor 1 and the contactor 2, one adjustable load is connected with the contactor 3 and the contactor 4, and one adjustable load is connected with the contactor 5 and the contactor 6.

[0035] Each of the adjustable loads is provided with an adjustable resistance, an adjustable inductance and an adjustable capacitance, and the adjustable resistance, the adjustable inductance and the adjustable capacitance are connected in parallel.

[0036] Preferably, the background monitoring master station is provided with:

[0037] a parameter setting module for setting test parameters;

[0038] a system monitoring module for monitoring communication states and abnormal states; the communication states are communication states of a data acquisition control card and communication states of a measured intelligent load switch; the abnormal states include voltage abnormalities on an output side of a molded case circuit breaker, inconsistencies between output currents of the molded case circuit breaker and collected currents of the measured intelligent load switch, contact abnormalities of the measured intelligent load switch, temperature overruns of the adjustable loads, and inconsistencies between actual action times of the measured intelligent load switch and control action times of the background monitoring master station;

[0039] a manual test module for manually debugging before automatic testing, so as to confirm states of the measured intelligent load switch;

[0040] an automatic test module for performing action reliability tests on the measured intelligent load switch according to the test parameters, automatically stopping the tests when abnormalities occur, and displaying and storing the abnormal information in real time;

[0041] a data display and storage module for displaying and storing test data in real time, the test data being ABC three-phase voltage data, ABC three-phase current data, temperature data and output states of a switch output unit, and simultaneously analyzing the test data to generate test results;

[0042] The test report automatic generation module generates a test report according to the test result of the data display and storage module.

[0043] Preferably, the test parameters are at least one of the number of test loops, the switching action frequency, the number of tests, the voltage alarm limit value, the current alarm limit value, and the qualification determination condition.

[0044] Another object of the present application is to provide a cluster-type intelligent load switching action reliability test method to avoid the shortcomings of the prior art. The cluster-type intelligent load switching action reliability test method can realize automatic testing, real-time monitoring, real-time display and storage of test data, test result determination, and automatic generation of test reports of the switching action reliability of multiple tested intelligent loads through one-time wiring.

[0045] The above object of the present application is achieved by the following technical measures:

[0046] A cluster-type intelligent load switching action reliability test method is provided, which is tested by using the above-mentioned cluster-type intelligent load switching action reliability test system, and includes the following steps:

[0047] S1, start, enter S2;

[0048] S2, confirm the communication states of the background monitoring master station with the data acquisition control card and the tested intelligent load switch, respectively, and enter S3;

[0049] S3, judge whether the communication state is abnormal, and if so, issue an alarm and enter S9, and if not, enter S4;

[0050] S4, configure test parameters, and enter S5;

[0051] S5, perform self-checking and manual debugging to confirm the state of the tested intelligent load switch, and enter S6;

[0052] S6, if the test system is abnormal, issue an alarm and return to S5; if not, enter S7;

[0053] S7, perform automatic testing, read the ABC three-phase current data and the ABC three-phase voltage data in real time, display and store the test data in real time, analyze the test data to obtain a test result, and if the test result is unqualified or the test system has an alarm during the automatic testing, issue an alarm and enter S9; if the test result is qualified, enter S8;

[0054] S8, initialize the test system, output a test report, and enter S9;

[0055] S9, end.

[0056] The cluster type intelligent load switch action reliability test system and test method, wherein the cluster type intelligent load switch action reliability test system is provided with: a background monitoring master station, setting test parameters, controlling the contactor cluster work through a data acquisition control card, collecting test data of the data acquisition control card and generating a test report according to the test data, and real-time display of test data; monitoring the state of the measured intelligent load switch; the data acquisition control card collects the ABC three-phase voltage data of the molded case circuit breaker output side through a voltage transformer; collects the ABC three-phase current of the molded case circuit breaker output side through a current transformer; collects the temperature data of the measured intelligent load switch through a temperature sensor; controls the contactor cluster, the buzzer and the indicator light to work, and monitors the state of the emergency stop button; the molded case circuit breaker provides a test power supply for the measured intelligent load switch; the contactor cluster provides a test loop for the measured intelligent load switch; the adjustable load adjusts the current and the characteristic; the temperature sensor real-time monitors the temperature data of the measured intelligent load switch; the voltage transformer real-time monitors the ABC three-phase voltage data of the molded case circuit breaker output side; the current transformer real-time monitors the ABC three-phase current data of the molded case circuit breaker output side; the emergency stop button disconnects all loops of the contactor cluster when an abnormality occurs; the indicator light indicates the state of the test system; the buzzer issues an alarm when there is an abnormality in the test system; the fan cools the adjustable load. Compared with the prior art, the beneficial effects of the present application are as follows: 1. Multiple measured intelligent load switch action reliability tests are realized through one wiring; 2. The test process automation and all-weather sustainability are realized by using embedded technology; 3. The multi-channel full-automatic closed-loop test of the intelligent load switch, the dynamic monitoring of the whole test process, the reliability of the test results and the traceability of the original data are ensured by using the background monitoring master station, wireless communication technology and Ethernet communication technology; 4. The automatic calculation of test data, the automatic determination of test results and the automatic generation of test reports are realized; 5. The closed-loop monitoring function of the test voltage, test current and action times, and the real-time monitoring of the adjustable load temperature ensure the reliability and safety of the automatic test process. BRIEF DESCRIPTION OF DRAWINGS

[0057] The application is further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the application.

[0058] Figure 1 It is a connection diagram of the cluster type intelligent load switch action reliability test system.

[0059] Figure 2 It is a schematic diagram of the contactor cluster.

[0060] Figure 3A schematic diagram for load adjustment.

[0061] Figure 4 A flowchart of the cluster-type intelligent load switch action reliability test method of Example 2.

[0062] In Figures 1 to 4 , comprising:

[0063] The background monitoring master station 100, the molded case circuit breaker 200, the adjustable load 300,

[0064] The data acquisition control card 400, the analog quantity acquisition unit 410, the switch quantity output unit 420, the switch quantity input unit 430,

[0065] The contactor cluster 500,

[0066] The emergency stop button 600, the indicator light 700, the buzzer 800, the measured intelligent load switch 900, and the fan 1000. DETAILED DESCRIPTION

[0067] The technical solutions of the present application are further described in combination with the following examples.

[0068] Example 1

[0069] A cluster-type intelligent load switch action reliability test system, as shown in Figure 1 , is provided with:

[0070] The background monitoring master station 100 sets test parameters, controls the contactor cluster 500 to work through the data acquisition control card 400, collects test data of the data acquisition control card 400, generates a test report according to the test data, and displays test data in real time; and monitors the state of the measured intelligent load switch 900;

[0071] The data acquisition control card 400 collects ABC three-phase voltage data of the output side of the molded case circuit breaker 200 through a voltage transformer; collects ABC three-phase current of the output side of the molded case circuit breaker 200 through a current transformer; collects temperature data of the measured intelligent load switch 900 through a temperature sensor; controls the contactor cluster 500, the buzzer 800, and the indicator light 700 to work, and monitors the state of the emergency stop button 600;

[0072] The molded case circuit breaker 200 provides a test power supply for the measured intelligent load switch 900;

[0073] The contactor cluster 500 provides a test loop for the measured intelligent load switch 900;

[0074] The adjustable load 300 adjusts current and characteristics;

[0075] Temperature sensor - real-time monitoring of temperature data of the measured intelligent load switch 900;

[0076] Voltage transformer - real-time monitoring of ABC three-phase voltage data on the output side of the molded case circuit breaker 200;

[0077] Current transformer - real-time monitoring of ABC three-phase current data on the output side of the molded case circuit breaker 200;

[0078] Emergency stop button 600 - when an abnormality occurs, all circuits of the contactor cluster 500 are disconnected;

[0079] Indicator light 700 - indicating the status of the test system;

[0080] Buzzer 800 - issuing an alarm when there is an abnormality in the test system;

[0081] Fan 1000 - cooling the adjustable load 300.

[0082] It should be noted that the measured intelligent load switch 900 of the present application is connected with the background monitoring master station 100 through wireless communication. Since the test system needs to know the state of the contactor cluster 500, i.e. whether it is open or closed, whether the contactor cluster 500 works normally according to the instruction, to prevent the automatic test from being invalid due to the failure or damage of the contactor cluster 500, and when the contactor cluster 500 has a failure or damage, it will cause long-term closing, which will cause the current to exist in the test circuit all the time, and there will be a safety hazard due to heating. Therefore, the present application can indirectly monitor the state of the contactor cluster 500 through wireless communication with the measured intelligent load switch 900. The indicator light 700 is an indication of the system status, which is extinguished when the system is running normally; when the system is abnormal, the indicator light 700 is red and always on, and the buzzer 800 is always on; wherein the system abnormality is, for example, large voltage deviation on the output side of the circuit breaker, large current deviation on the output side of the circuit breaker and current deviation on the switch, temperature of the adjustable load 300 exceeding the alarm value, etc. When the system has an abnormality, the operator can restore the state of the buzzer 800 through the background monitoring master station 100. When the test result is unqualified, the indicator light 700 is red and flashes, but the buzzer 800 does not sound, at which time the operator manually operates the background monitoring master station 100 to restore the state of the indicator light 700, i.e. to extinguish the indicator light 700.

[0083] It should also be noted that in the Figure 1 CT1, CT2 and CT3 are current transformers, PT1, PT2 and PT3 are voltage transformers, and PT100-1, PT100-2 and PT100-3 are temperature sensors. The model of the data acquisition control card 400 is PCI8735, and the data acquisition control card 400 communicates with the background monitoring master station 100 through Ethernet. The model of the molded case circuit breaker 200 is 400A.

[0084] The plastic shell circuit breaker 200 of the present application is independently powered by three phases ABC, and the rated current is AC 400A, wherein each phase can bear a maximum current load of 400A, so that the circuit breaker will not be overloaded during the test process, and the supply phase voltage is AC 220V.

[0085] The data acquisition control card 400 is provided with:

[0086] The analog quantity acquisition unit 410 acquires the ABC three-phase voltage data of the output side of the plastic shell circuit breaker 200 through a voltage transformer, acquires the three-phase current of the output side ABC of the plastic shell circuit breaker 200 through a current transformer, and acquires the temperature data of the measured intelligent load switch 900 through a temperature sensor;

[0087] The on-off quantity output unit 420 controls the contactor cluster 500, the buzzer 800, the indicator light 700 and the fan 1000 to work;

[0088] The on-off quantity input unit 430 monitors the state of the emergency stop button 600 and monitors the output state of the on-off quantity output unit 420. One output of the on-off quantity output unit 420 is connected in parallel with the emergency stop button 600.

[0089] It should be noted that the function of one output of the on-off quantity output unit 420 connected in parallel with the emergency stop button 600 is that whether the emergency stop button 600 is pressed or the one output is closed, all loops of the contactor cluster 500 will be immediately disconnected, ensuring the safety of the test.

[0090] As shown in Figure 2 The contactor cluster 500 is provided with six intelligent switch test loops, which are defined as loop 1, loop 2, loop 3, loop 4, loop 5 and loop 6 respectively.

[0091] Loop 1 and loop 2 are connected with phase A of the plastic shell circuit breaker 200, and loop 1 and loop 2 are provided with interlocking function;

[0092] Loop 3 and loop 4 are connected with phase B of the plastic shell circuit breaker 200, and loop 3 and loop 4 are provided with interlocking function;

[0093] Loop 5 and loop 6 are connected with phase C of the plastic shell circuit breaker 200, and loop 5 and loop 6 are provided with interlocking function.

[0094] The contactor cluster 500 is provided with six contactors, each of which is connected with one control loop of the on-off quantity output unit 420, and each of which is connected with the measured intelligent load switch 900. The contactor coil of each contactor is AC 220V, and each contactor contains one set of normally open contact and one set of normally closed contact.

[0095] The contactor coil of each contactor is AC220V, which means that when the coil is supplied with AC220V power, the normally open contact of the contactor becomes normally closed, and the normally closed contact becomes normally open. Whether the coil is supplied with power is controlled by a control loop of the switch output unit 420. The control signal of the contactor is the output node of the switch output unit 420, which controls whether the contactor coil is powered, and obtains AC220V working power. When the output node of the switch output unit 420 is closed, the corresponding control signal is valid. The control signal controls whether the contactor coil is powered, and the normally open contact of the contactor becomes normally closed, and the normally closed contact becomes normally open.

[0096] The six contactors are defined as contactor 1, contactor 2, contactor 3, contactor 4, contactor 5 and contactor 6. The contactor 1 is located in the loop 1, the contactor 2 is located in the loop 2, and the contactor 1 and the contactor 2 are a group of interlocking contactors to generate interlocking function; the contactor 3 is located in the loop 3, the contactor 4 is located in the loop 4, and the contactor 3 and the contactor 4 are a group of interlocking contactors to generate interlocking function; the contactor 5 is located in the loop 5, the contactor 6 is located in the loop 6, and the contactor 5 and the contactor 6 are a group of interlocking contactors to generate interlocking function.

[0097] It should be noted that each group of interlocking contactors of the present application is a hardware interlock for the test loop, which can avoid the simultaneous closing of the two contactors in each group of interlocking contactors, resulting in test failure. With the contactor 1 and the contactor 2, when the control signal of the contactor 1 corresponding to a control loop is valid, the normally open contact of the contactor 1 becomes normally closed. At this time, the control signal of the contactor 2 corresponding to a control loop is invalid, and the state of the normally closed contact of the contactor 2 does not change, and the adjustable load 3001 becomes the load of the intelligent load switch 1, and the action validity is tested. When the control signal of the contactor 2 corresponding to a control loop is valid, the normally open contact of the contactor 2 becomes normally closed. At this time, the control signal of the contactor 1 corresponding to a control loop is invalid, and the state of the normally closed contact of the contactor 1 does not change, and the adjustable load 3001 becomes the load of the intelligent load switch 2, and the action validity is tested.

[0098] The adjustable load 300 is provided with three, one adjustable load 300 is connected with the contactor 1 and the contactor 2, one adjustable load 300 is connected with the contactor 3 and the contactor 4, and one adjustable load 300 is connected with the contactor 5 and the contactor 6. As shown in Figure 3 Each adjustable load 300 is provided with an adjustable resistance, an adjustable inductance and an adjustable capacitance, and the adjustable resistance, the adjustable inductance and the adjustable capacitance are connected in parallel.

[0099] It should be noted that the adjustable load 300 of the present application contains resistance, inductance and capacitance, so that the load size and characteristics can be adjusted according to the test requirements, wherein the load size can be the current size, and the characteristics are, for example, resistance, inductance, capacitance, and two or three combinations.

[0100] The background monitoring master station 100 is provided with:

[0101] A parameter setting module for setting test parameters;

[0102] A system monitoring module for monitoring communication status and abnormal status; the communication status is the communication status of the data acquisition control card 400 and the communication status with the measured intelligent load switch 900; the abnormal status is voltage abnormality on the output side of the molded case circuit breaker 200, inconsistency between the output current of the molded case circuit breaker 200 and the collected current of the measured intelligent load switch 900, abnormality of the contact of the measured intelligent load switch 900, temperature overrun of the adjustable load 300, inconsistency between the actual action times of the measured intelligent load switch 900 and the control action times of the background monitoring master station 100;

[0103] A manual test module for manually debugging before automatic testing, so as to confirm the status of the measured intelligent load switch 900;

[0104] An automatic test module for performing action reliability test on the measured intelligent load switch 900 according to the test parameters, automatically stopping the test when an abnormality occurs, and displaying and storing the abnormality information in real time;

[0105] A data display and storage module for displaying and storing the test data in real time, wherein the test data is ABC three-phase voltage data, ABC three-phase current data, temperature data and output state of the switch output unit 420, and the test data is analyzed to generate test results;

[0106] A test report automatic generation module for generating a test report according to the test results of the data display and storage module.

[0107] The test parameters are at least one of test circuit quantity, switch action frequency, test times, voltage alarm limit value, current alarm limit value and qualified determination condition.

[0108] It should be noted that the role of the voltage alarm limit is that when the output side voltage of the molded case circuit breaker 200 is too large or too small, the test system issues an alarm and stops working; the role of the current alarm limit is that when the output side current of the molded case circuit breaker 200 and the current value of the measured intelligent load switch 900 transmitted to the background monitoring master station 100 through wireless transmission have a large deviation, the test system issues an alarm and stops working. The qualified judgment condition of the application is that the background monitoring master station 100 issues a measured intelligent load switch 900 action command once each time, wherein the closing-opening is one action, the control command count is counted once, and when the output side current value of the molded case circuit breaker 200 is monitored to be approximately the set value, the measured intelligent load switch 900 action count is counted once. When the control command count, the switch action count and the test count are consistent, it is determined to be qualified, and in other cases, it is determined to be unqualified.

[0109] The contact abnormality of the measured intelligent load switch 900 of the application refers to that when the output side current of the molded case circuit breaker 200 is monitored to exist for a long time, it is due to the periodic action of the background monitoring master station 100 during the test process, so the test loop current does not exist for a long time. The current existing for a long time can exceed the time of one switch periodic action, which belongs to long-term existence.

[0110] The manual test module of the application refers to that before the automatic test starts, the action reliability of the measured intelligent load switch 900 needs to be judged, so before the measured intelligent load switch 900 is manually operated, the manual test module needs to be started, and then the measured intelligent load switch 900 is manually operated and debugged or visually observed whether the measured intelligent load switch 900 has a damaging condition.

[0111] The data display and storage module of the application stores the test data according to a certain interval time (the interval time can be set), which has the purpose that when the test system has an exception, the background monitoring master station 100 immediately stores the exception information for problem analysis.

[0112] The beneficial effects of the cluster type intelligent load switch action reliability test system are as follows: 1. Through one wiring, the action reliability test of multiple measured intelligent load switches 900 is realized; 2. By using embedded technology, the automation and all-weather sustainability of the test process are realized; 3. By using the background monitoring master station 100, wireless communication technology and Ethernet communication technology, the multi-channel full-automatic closed-loop test of the intelligent load switch is realized, the dynamic monitoring of the whole test process is realized, and the reliability of the test result and the traceability of the original data are ensured; 4. The automatic calculation of the test data, the automatic determination of the test result and the automatic generation of the test report are realized; 5. The closed-loop monitoring function of the test voltage, the test current and the action times, and the real-time monitoring of the adjustable load 300 temperature ensure the reliability and safety of the automatic test process.

[0113] Embodiment 2

[0114] A fault indicator current accuracy test method, as shown in Figure 4 the action reliability test system of the cluster type intelligent load switch of embodiment 1 is used for testing, including the following steps:

[0115] S1, start, enter S2;

[0116] S2, confirm the communication state of the background monitoring master station 100 with the data acquisition control card 400 and the measured intelligent load switch 900 respectively, enter S3;

[0117] S3, judge whether the communication state is abnormal, if abnormal, issue an alarm and enter S9, if not, enter S4;

[0118] S4, configure test parameters, enter S5;

[0119] S5, perform self-checking and manual debugging to confirm the state of the measured intelligent load switch 900, enter S6;

[0120] S6, if the test system is abnormal, issue an alarm and return to S5; if not, enter S7;

[0121] S7, perform automatic testing, read ABC three-phase current data and ABC three-phase voltage data in real time, display and store test data in real time, analyze test data to obtain test results, if the test results are unqualified or the test system is abnormal during automatic testing, issue an alarm and enter S9; if the test results are qualified, enter S8;

[0122] S8, initialize the test system, output a test report, and enter S9;

[0123] S9, end.

[0124] It should be noted that the present application issues an alarm directly at S3 and S7 to end, but returns to S5 after issuing an alarm at S6, because the self-checking is manually operated in actual operation, so the operator is always present at this time, can observe the test system in real time and find problems in time, so it can return to S5.

[0125] The cluster type intelligent load switch action reliability test method has the following beneficial effects:

[0126] 1. Through one connection, the action reliability test of multiple measured intelligent load switches 900 is realized; 2. The automation and all-weather sustainability of the test process are realized by using embedded technology; 3. The multi-channel full-automatic closed-loop test of the intelligent load switch, the dynamic monitoring of the whole test process, the reliability of the test result and the traceability of the original data are realized by using the background monitoring master station 100, the wireless communication technology and the Ethernet communication technology; 4. The automatic calculation of the test data, the automatic determination of the test result and the automatic generation of the test report are realized; 5. The closed-loop monitoring function of the configured test voltage, test current and action times, and the real-time monitoring of the adjustable load 300 temperature ensure the reliability and safety in the automatic test process.

[0127] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A cluster intelligent load switch operation reliability test system, characterized in that: The settings are: Backstage monitoring main station - set test parameters, control the contactor cluster operation through the data acquisition control card, collect test data from the data acquisition control card and generate test reports based on the test data, and display test data in real time; Monitor the status of the intelligent load switch under test; Data acquisition control card - collects ABC three-phase voltage data on the output side of the molded case circuit breaker through a voltage transformer; collects ABC three-phase current on the output side of the molded case circuit breaker through a current transformer; collects temperature data of the tested intelligent load switch through a temperature sensor; controls the operation of the contactor cluster, buzzer and indicator light, and monitors the status of the emergency stop button; Molded case circuit breaker - provides test power to the intelligent load switch under test; Contactor cluster - provides a test circuit for the intelligent load switch under test; Adjustable load - adjust current and characteristics; Temperature sensor - real-time monitoring of the temperature data of the intelligent load switch under test; Voltage transformer - real-time monitoring of the ABC three-phase voltage data on the output side of the molded case circuit breaker; Current transformer - real-time monitoring of the ABC three-phase current data on the output side of the molded case circuit breaker; Emergency stop button - disconnects all circuits of the contactor cluster when an abnormality occurs; Indicator light - indicates the status of the test system; Buzzer - issues an alarm when there is an abnormality in the test system; Fan: cools the adjustable load.

2. The cluster intelligent load switch operation reliability testing system according to claim 1 is characterized in that: The data acquisition control card is provided with: Analog quantity acquisition unit - collects the ABC three-phase voltage data on the output side of the molded case circuit breaker through the voltage transformer; collects the ABC three-phase current on the output side of the molded case circuit breaker through the current transformer; collects the temperature data of the intelligent load switch under test through the temperature sensor; Switch output unit - controls the contactor cluster, the buzzer, the indicator light and the fan to operate; Switch input unit - monitors the state of the emergency stop button and monitors the output state of the switch output unit.

3. The cluster intelligent load switch operation reliability testing system according to claim 2 is characterized in that: One output of the switch output unit is connected in parallel with the emergency stop button.

4. The cluster intelligent load switch operation reliability testing system according to claim 2 is characterized in that: The contactor cluster is provided with 6 intelligent switch test loops, and the 6 intelligent switch test loops are defined as loop 1, loop 2, loop 3, loop 4, loop 5 and loop 6 respectively; The circuit 1 and the circuit 2 are connected to the phase A of the molded case circuit breaker, and the circuit 1 and the circuit 2 are provided with an interlocking function; The loop 3 and the loop 4 are connected to the B phase of the molded case circuit breaker, and the loop 3 and the loop 4 are provided with an interlocking function; The loop 5 and the loop 6 are connected to the C phase of the molded case circuit breaker, and the loop 5 and the loop 6 are provided with an interlocking function.

5. The cluster intelligent load switch operation reliability testing system according to claim 4 is characterized in that: The contactor cluster is provided with 6 contactors, each contactor is connected to a control loop of the switch output unit, and each contactor is connected to the intelligent load switch under test. The contactor coil of each contactor is AC220V, and each contactor contains 1 group of normally open contacts and 1 group of normally closed contacts.

6. The cluster intelligent load switch operation reliability testing system according to claim 5 is characterized in that: The six contactors are defined as contactor 1, contactor 2, contactor 3, contactor 4, contactor 5 and contactor 6. The contactor 1 is located in the loop 1, and the contactor 2 is located in the loop 2. The contactor 1 and the contactor 2 form a set of locking contactors to generate an interlocking function; The contactor 3 is located in the loop 3, and the contactor 4 is located in the loop 4. The contactor 3 and the contactor 4 form a set of locking contactors to generate an interlocking function; The contactor 5 is located in the loop 5 , and the contactor 6 is located in the loop 6 . The contactor 5 and the contactor 6 form a group of locking contactors to generate an interlocking function.

7. The cluster intelligent load switch operation reliability testing system according to claim 6 is characterized in that: There are three adjustable loads, one adjustable load is connected to the contactor 1 and the contactor 2, one adjustable load is connected to the contactor 3 and the contactor 4, and one adjustable load is connected to the contactor 5 and the contactor 6; Each of the adjustable loads is provided with an adjustable resistor, an adjustable inductor and an adjustable capacitor, and the adjustable resistor, the adjustable inductor and the adjustable capacitor are connected in parallel.

8. The cluster intelligent load switch operation reliability testing system according to claim 7 is characterized in that: The background monitoring main station is provided with: Parameter setting module - set test parameters; System monitoring module - monitors communication status and abnormal status; the communication status refers to the communication status of the data acquisition control card and the communication status with the intelligent load switch under test; the abnormal status includes abnormal voltage on the output side of the molded case circuit breaker, inconsistency between the output current of the molded case circuit breaker and the current collected by the intelligent load switch under test, abnormal contact of the intelligent load switch under test, temperature exceeding the limit of the adjustable load, and inconsistency between the actual number of operations of the intelligent load switch under test and the number of control operations of the background monitoring master station; Manual test module - manual debugging before automatic testing to confirm the status of the intelligent load switch under test; Automatic test module - performs an action reliability test on the intelligent load switch under test according to the test parameters, automatically stops the test when an abnormality occurs, and displays and stores the abnormal information in real time; Data display and storage module - displays test data in real time and stores it regularly, wherein the test data includes the ABC three-phase voltage data, the ABC three-phase current data, the temperature data and the output state of the switching output unit, and analyzes the test data to generate test results; Test report automatic generation module - generates a test report based on the test results of the data display and storage module.

9. The cluster intelligent load switch operation reliability testing system according to claim 8, characterized in that: The test parameter is at least one of the number of test loops, switch action frequency, number of tests, voltage alarm limit, current alarm limit, and qualification judgment conditions.

10. A cluster intelligent load switch action reliability testing method, characterized in that: The test system for the operation reliability of the cluster intelligent load switch according to any one of claims 1 to 9 is used to perform the test, comprising the following steps: S1, start, enter S2; S2, confirm the communication status of the background monitoring master station with the data acquisition control card and the intelligent load switch under test, and enter S3; S3. Determine whether there is an abnormality in the communication status. If there is an abnormality, issue an alarm and enter S9. If there is no abnormality, enter S4. S4, configure test parameters and enter S5; S5, perform self-test and manual debugging to confirm the status of the tested intelligent load switch, and enter S6; S6: When determining whether the test system has an abnormality, immediately issue an alarm and return to S5; when no abnormality exists, proceed to S7; S7, perform automatic testing, and read the ABC three-phase current data and the ABC three-phase voltage data in real time, and display and store the test data in real time, and analyze the test data to obtain a test result. If the test result is unqualified or if the test system has an alarm during the automatic test process, an alarm is issued and the process proceeds to S9; if the test result is qualified, the process proceeds to S8; S8, initialize the test system, output a test report, and enter S9; S9, end.

Images