CN114545316A - Detection system and detection method for detecting insulation monitoring device - Google Patents

Abstract

The invention discloses a detection system and a detection method for detecting an insulation monitoring device. The device comprises a three-phase standard source and a detection control system connected with the three-phase standard source, wherein the detection control system is connected with a fault resistance box, a leakage current sensor and a signal acquisition module, the fault resistance box is connected with a test circuit of an insulation monitoring module, the three-phase standard source can directly test the voltage value of a fault voltage positioning module through the control of the detection control system, the leakage current sensor is connected with a fault line positioning module, and the relay of the fault voltage positioning module and the relay of the fault line positioning module are respectively connected with the signal acquisition module. Has the advantages that: the detection system can simultaneously detect various functional parameters of three functional modules of the direct current source insulation monitoring device, analyze the overall performance of the direct current source insulation monitoring device and judge the performance of the direct current source insulation monitoring device, thereby ensuring that the direct current source insulation monitoring device which is qualified in detection can reliably operate.

Description

A detection system and detection method for detecting insulation monitoring device

technical field

The invention relates to a detection technology of an insulation monitoring device, in particular to a detection system and a detection method for detecting the insulation monitoring device.

Background technique

In the prior art, conventional insulation monitoring devices are usually divided into three types: an insulation monitoring module, a fault voltage locating module, and a fault line locating module. The unit tests various functional parameters of each functional module to ensure the normal operation of each functional module. On the one hand, the existing detection method is complicated to build a detection system, which usually requires the use of multiple sets of different detection systems at the same time. To perform detection, the cost of detection is high and the detection reliability is also poor. On the other hand, the method of separately detecting each functional module makes the detection efficiency low and the labor cost high. On the other hand, the existing The detection system can only detect its status and cannot judge the quality of the functional modules.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a detection system for detecting insulation monitoring devices with simple structure design, good detection reliability, and capable of simultaneously detecting various functional parameters of three functional modules and judging their performance. Detection method.

In order to solve the above technical problems, the detection system for detecting insulation monitoring devices of the present invention includes a three-phase standard source and a detection control system connected to the three-phase standard source. The detection and control system is connected with a fault resistance box, a leakage current sensor and a signal The acquisition module, the fault resistance box is connected to the test circuit of the insulation monitoring module and can detect the insulation resistance value of the insulation monitoring module, and the voltage value of the fault voltage location module can be directly tested through the three-phase standard source controlled by the detection control system The leakage current sensor is connected to the fault line locating module and can detect the variation of the leakage current induced value of the fault line locating module. The fault voltage locating module and the relays of the fault line locating module are respectively connected to the signal acquisition module and can be judged by the signal acquisition module respectively. Check whether the relay outputs of the fault voltage locating module and fault line locating module are normal.

Further, an isolation transformer is connected between the three-phase standard source and the detection and control system.

Further, the transformer is a 2kW isolation 1:1 transformer.

Further, the detection control system has a touch screen for inputting detection information.

Further, the detection control system is connected with a power supply.

Further, the power supply is a 120W/DC24V power supply.

Further, the signal acquisition module is a DI32-bit signal acquisition module.

A detection method based on a detection system for detecting an insulation monitoring device, comprising the following steps:

A. Turn on the power supply, check whether the communication addresses of the insulation monitoring module, fault voltage locating module and fault line locating module are correct, and then confirm the communication between each insulation monitoring module, fault voltage locating module and fault line locating module through the touch screen, and identify the insulation Whether the communication between the monitoring module, the fault voltage location module and the fault line location module is normal;

B. The fault resistance box is connected to the test circuit of the insulation monitoring module, and the resistance of different resistance values is connected to the fault resistance box to detect the accuracy of the insulation resistance value of the module;

C. Test the accuracy of the voltage value of the fault voltage location module through the voltage change of the three-phase standard source;

D. Connect the leakage current sensor in the fault line location module to detect the variation of the leakage current induction value of the fault line location module;

E. Control the relay actions of the fault voltage locating module and the fault line locating module through the touch screen, and reflect it on the signal acquisition module to judge whether the relay output is normal.

The advantages of the present invention are:

The designed detection system can simultaneously detect various functional parameters of the three functional modules of the DC source insulation monitoring device, and analyze the performance of the DC source insulation monitoring device in all aspects, and judge its performance, so as to ensure the qualified testing. DC source insulation monitoring devices can operate reliably.

Description of drawings

1 is a schematic block diagram of a detection system for detecting an insulation monitoring device according to the present invention;

FIG. 2 is a circuit diagram of a detection system for detecting an insulation monitoring device of the present invention.

Detailed ways

The detection system and detection method for detecting an insulation monitoring device of the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Example 1:

As shown in the figure, the detection system for detecting an insulation monitoring device in this embodiment includes a three-phase standard source, a detection control system, and a 2kW isolation 1:1 transformer connected between the three-phase standard source and the detection control system. The control system has a touch screen for inputting detection information. The detection control system is connected to a 120W/DC24V power supply. The detection control system is also connected to a fault resistance box, a leakage current sensor and a DI 32-bit signal acquisition module. The fault resistance box is connected to the insulation monitoring module. The test circuit can also detect the insulation resistance value of the insulation monitoring module. The voltage value of the fault voltage location module can be directly tested by the three-phase standard source controlled by the detection control system. The leakage current sensor is connected to the fault line location module and can detect The variation of the leakage current induction value of the fault line locating module, the fault voltage locating module has a 10A/2P circuit breaker, the relay of the fault line locating module has a 32A/4P circuit breaker, and the fault voltage locating module and the fault line locating module relays are respectively connected The signal acquisition module can respectively judge whether the relay outputs of the fault voltage locating module and the fault line locating module are normal through the signal acquisition module.

Embodiment 2:

The detection method based on the detection system of the detection insulation monitoring device of the present embodiment includes the following steps:

A. Turn on the power supply, check whether the communication addresses of the insulation monitoring module, fault voltage locating module and fault line locating module are correct, and then confirm the communication between each insulation monitoring module, fault voltage locating module and fault line locating module through the touch screen, and identify the insulation Whether the communication between the monitoring module, the fault voltage location module and the fault line location module is normal;

B. The fault resistance box is connected to the test circuit of the insulation monitoring module, and the resistance of different resistance values is connected to the fault resistance box to detect the accuracy of the insulation resistance value of the module;

C. Test the accuracy of the voltage value of the fault voltage location module through the voltage change of the three-phase standard source;

D. Connect the leakage current sensor in the fault line location module to detect the variation of the leakage current induction value of the fault line location module;

E. Control the relay actions of the fault voltage locating module and the fault line locating module through the touch screen, and reflect it on the signal acquisition module to judge whether the relay output is normal.

Claims (8)

1. A detection system for detecting an insulation monitoring device, comprising a three-phase standard source and a detection control system connected with the three-phase standard source, the detection and control system is connected with a fault resistance box, a leakage current sensor and a signal acquisition module, The fault resistance box is connected to the test circuit of the insulation monitoring module and can detect the insulation resistance value of the insulation monitoring module, and can directly test the voltage value of the fault voltage locating module through the three-phase standard source controlled by the detection control system, The leakage current sensor is connected to the fault line locating module and can detect the variation of the leakage current induced value of the fault line locating module. The fault voltage locating module and the relays of the fault line locating module are respectively connected to the signal acquisition module and can pass through the signal acquisition module. The signal acquisition module respectively judges whether the relay outputs of the fault voltage locating module and the fault line locating module are normal. 2 . The detection system for detecting insulation monitoring devices according to claim 1 , wherein an isolation transformer is connected between the three-phase standard source and the detection control system. 3 . 3 . The detection system for detecting an insulation monitoring device according to claim 2 , wherein the transformer is a 2kW isolation 1:1 transformer. 4 . 4. The inspection system for inspecting insulation monitoring devices according to claim 1, 2 or 3, wherein the inspection control system has a touch screen for inputting inspection information. 5 . The detection system for detecting insulation monitoring devices according to claim 4 , wherein the detection control system is connected with a power supply. 6 . 6 . The detection system for detecting insulation monitoring devices according to claim 1 , wherein the power supply is a 120W/DC24V power supply. 7 . 7 . The detection system for detecting insulation monitoring devices according to claim 1 , wherein the signal acquisition module is a DI32-bit signal acquisition module. 8 . 8. A detection method based on a detection system for detecting an insulation monitoring device, characterized in that it comprises the following steps: A. Turn on the power supply, check whether the communication addresses of the insulation monitoring module, fault voltage locating module and fault line locating module are correct, and then confirm the communication between each insulation monitoring module, fault voltage locating module and fault line locating module through the touch screen, and identify the insulation Whether the communication between the monitoring module, the fault voltage location module and the fault line location module is normal; B. The fault resistance box is connected to the test circuit of the insulation monitoring module, and the resistance of different resistance values is connected to the fault resistance box to detect the accuracy of the insulation resistance value of the module; C. Test the accuracy of the voltage value of the fault voltage location module through the voltage change of the three-phase standard source; D. Connect the leakage current sensor in the fault line location module to detect the variation of the leakage current induction value of the fault line location module; E. Control the relay actions of the fault voltage locating module and the fault line locating module through the touch screen, and reflect it on the signal acquisition module to judge whether the relay output is normal.

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