Control system for high-capacity test
Through the insulation management technology of optical fiber connection, the problem of insufficient insulation management in large capacity detection of traditional high-voltage equipment is solved, effective isolation of high voltage is achieved, and the safety of operators and equipment is protected.
Patent Information
- Application Number
- CN202510250024.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2025-06-13
AI Technical Summary
In the large capacity detection of traditional high-voltage equipment, the insulation management of the control system and the test circuit is insufficient, resulting in high voltages that may be introduced into the control circuit, causing equipment damage and operator injury.
The test debugging system is connected to the optical fiber to control the computer, the central programmable logic controller and the test site programmable logic controller. The optical fiber is an insulating material, which physically isolates the test site switches and equipment to avoid the introduction of high voltage into the control system.
It effectively isolates the high voltage at the test site, prevents it from being introduced into the control equipment of the operating table, protects the safety of the operator, and avoids damage to the control equipment.
Smart Images
Figure CN120143671A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of electrical performance testing equipment, and more specifically, to a control system for large-capacity tests. Background Art
[0002] With the rapid development of social economy and technology, the requirements for the safety and reliability of electrical equipment are getting higher and higher, so the requirements for the detection technology of electrical equipment are also increasing accordingly. Most traditional large-capacity detections of high-voltage equipment use PLC control, which cannot achieve the physical management of the insulation between the control system and the high voltage of the test circuit. Especially, the emergency stop circuit is the last protection for the large-capacity test laboratory. The emergency stop button is placed at the position on the operation console that is most easily accessible to the test control operator. Once the primary voltage is connected to the control circuit due to factors such as faults, and the insulation withstand voltage of the control circuit cannot withstand the primary voltage, it is bound to cause damage to the control equipment and casualties to the test control operator. Summary of the Invention
[0003] The purpose of the present invention is to provide a control system for large-capacity tests, which is used in a large-capacity test laboratory for electrical tests and can control large-capacity tests for electrical equipment such as high-voltage and low-voltage circuit breakers, transformers, load switches, and fuses. It has strong reliability and will not cause high voltage to be introduced into the control system due to test failures, thus causing harm to test operators.
[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A control system for large-capacity tests includes a test debugging system control computer PC1, a test process system control computer PC2, and an emergency stop button AN installed on the operation console. The test debugging system control computer PC1 is connected to a central programmable logic controller PLC1 through an optical fiber. The central programmable logic controller PLC1 is connected to several test site programmable logic controllers PLC2 through an optical fiber. The test site programmable logic controllers PLC2... PLCn are respectively connected to test site equipment through cables, and adjacent test site programmable logic controllers PLC2... PLCn are connected to each other through optical fibers. The test process system control computer PC2 is connected to a timing host SX through an optical fiber. The timing host SX is connected to a power amplifier cabinet GF through an optical fiber. The power amplifier cabinet GF is respectively connected to a closing switch, a pre-stage control switch, a test specimen, and a test object through cables. An emergency stop switch AN1 is connected to an electromagnetic switch DC through a cable. The electromagnetic switch DC is connected to a travel switch XC through a live working insulating rope. The travel switch XC is connected to a protection switch, an operating circuit breaker, and a pre-stage control switch.
[0005] Preferably, the central programmable logic controller PLC1 is connected to several valve island cabinets FD through optical fibers, and the several valve island cabinets FD are respectively connected to the pneumatic disconnector of the test site equipment through cables.
[0006] Preferably, adjacent two of the valve island cabinets FD are connected through optical fibers.
[0007] Preferably, the test site equipment includes a transformer, an alarm column light, a door switch, a companion test sample, a test sample, a test circuit breaker, a closing switch, and a pre-stage control switch.
[0008] Preferably, the length of the live working insulating rope is set according to the highest voltage of the test system.
[0009] When the present invention is in use, an operator controls the test debugging system control computer PC1, the test process system control computer PC2, and the emergency stop button AN installed on the operation console to control the test. The test debugging system control computer PC1 is connected to the central programmable logic controller PLC1 through an optical fiber. The central programmable logic controller PLC1 is respectively connected to several test site programmable logic controllers PLC2 and several valve island cabinets through optical fibers. The test process system control computer PC2 is connected to the timing host SX through an optical fiber. Since the optical fiber is an insulating material, the optical fiber physically isolates the test site switches, the pneumatic disconnectors of the test site equipment, etc., avoiding the risk of high voltage being introduced into the control equipment installed on the operation console when a fault occurs at the test site, thereby protecting the safety of the operator.
[0010] In the present invention, adjacent two of the test site programmable logic controllers PLC2 are connected through optical fibers, avoiding the mutual influence between the test site programmable logic controllers PLC2 when an accident occurs.
[0011] In the present invention, adjacent valve island cabinets are connected through optical fibers, avoiding the mutual influence between the valve island cabinets when an accident occurs.
[0012] In the present invention, the emergency stop button AX installed on the operation console is connected to the electromagnetic switch DC through a cable, and the electromagnetic switch DC is connected to the travel switch XC through a live working insulating rope. The live working insulating rope physically isolates the emergency stop button from the test site equipment, avoiding the risk of high voltage being introduced into the operation console when equipment such as the protection switch, the operation circuit breaker, and the pre-stage control switch fails. Description of the Drawings
[0013] Figure 1 is the circuit connection schematic diagram of the present invention; Figure 2 is the connection schematic diagram of the electromagnetic switch DC controlling the travel switch XC; Figure 3It is a physical diagram of the software operation of the test debugging system control computer PC1 during the opening test of a high-voltage circuit breaker in a large-capacity test laboratory; Figure 4 It is a physical diagram of the software operation of the test process system control computer PC2 during the opening test of a high-voltage circuit breaker in a large-capacity test laboratory; Figure 5 It is a physical diagram of the operation console for the opening test of a high-voltage circuit breaker in a large-capacity test laboratory; Figure 6 It is a physical diagram of the timing host and the power amplifier cabinet; Figure 7 It is the oscillogram formed during the opening test of a high-voltage circuit breaker in a large-capacity test laboratory. Specific implementation mode
[0014] The present invention will be further described in detail below with reference to the accompanying drawings.
[0015] As Figure 1 、 Figure 2 shown, a control system for large-capacity tests includes a test debugging system control computer PC1, a test process system control computer PC2, and an emergency stop button AN installed on the operation console. The test debugging system control computer PC1 is connected to the central programmable logic controller PLC1 through an optical fiber. The central programmable logic controller PLC1 is connected to several test field programmable logic controllers PLC2 through an optical fiber. The test field programmable logic controllers PLC2... PLCn are respectively connected to the test field equipment through cables, and adjacent two test field programmable logic controllers PLC2... PLCn are connected through an optical fiber; the test process system control computer PC2 is connected to the timing host SX through an optical fiber. The timing host SX is connected to the power amplifier cabinet GF through an optical fiber. The power amplifier cabinet GF is respectively connected to the closing switch, the pre-stage control switch, the test sample, and the test product through cables; the emergency stop switch AN1 is connected to the electromagnetic switch DC through a cable. The electromagnetic switch DC is connected to the travel switch XC through a live working insulating rope. The travel switch XC is connected to the protection switch, the operating circuit breaker, and the pre-stage control switch.
[0016] The central programmable logic controller PLC1 is connected to three valve island cabinets FD through an optical fiber. The three valve island cabinets FD are respectively connected to the pneumatic disconnector of the test field equipment through cables. Adjacent two valve island cabinets FD are connected through an optical fiber.
[0017] The test field equipment includes a transformer, an alarm column light, a door switch, a test sample, a test product, a test loop circuit breaker, a closing switch, and a pre-stage control switch.
[0018] The length of the live working insulating rope is set according to the highest voltage of the test system.
[0019] Figures 3 to 7 It shows the physical diagram when the control system described in the present invention is applied to a large-capacity test laboratory for the opening test of a high-voltage circuit breaker.
[0020] In the present invention, the test and commissioning system control computer PC1 and the test process system control computer PC2 installed on the operation console are respectively connected to the control equipment at the test site through optical fibers. The electromagnetic switch DC is connected to the travel switch XC through a live working insulating rope. Both the optical fiber and the live working insulating rope are insulators, which avoids introducing high voltage into the operation console when the equipment at the test site fails, thus ensuring the safety of the test operators.
[0021] The above are only the preferred examples of the present invention. It should be pointed out that for those of ordinary skill in the art, under the technical inspiration provided by the present invention, other equivalent deformations and improvements can also be made, which should also be regarded as the protection scope of the present invention.
Claims
1. A control system for large-capacity testing, characterized in that: It includes a test and debugging system control computer PC1, a test process system control computer PC2 and an emergency stop button AN installed on an operating table. The test and debugging system control computer PC1 is connected to a central programmable logic controller PLC1 through optical fiber, and the central programmable logic controller PLC1 is connected to several test site programmable logic controllers PLC2 through optical fiber. The test site programmable logic controllers PLC2-PLCn are respectively connected to the test site equipment through cables, and two adjacent test site programmable logic controllers PLC2-PLCn are connected through optical fiber; the test process system control computer PC2 is connected to a timing host SX through optical fiber, and the timing host SX is connected to a power amplifier cabinet GF through optical fiber, and the power amplifier cabinet GF is respectively connected to a closing switch, a front-stage control switch, a test piece and a test piece through cables; the emergency stop switch AN1 is connected to an electromagnetic switch DC through a cable, and the electromagnetic switch DC is connected to a travel switch XC through an insulating rope for live operation, and the travel switch XC is connected to a protective switch, an operating circuit breaker and a front-stage control switch.
2. A control system for large-capacity testing according to claim 1, characterized in that: The central programmable logic controller PLC1 is connected to several valve island cabinets FD through optical fibers, and several valve island cabinets FD are connected to pneumatic isolation switches of test field equipment through cables.
3. A control system for large-capacity testing according to claim 2, characterized in that: Two adjacent valve island cabinets FD are connected via optical fibers.
4. A control system for large-capacity testing according to claim 1, 2 or 3, characterized in that: The test site equipment includes a transformer, an alarm column lamp, a door switch, a test product, a test product, a test circuit breaker, a closing switch, and a front-stage control switch.
5. A control system for large-capacity testing according to claim 1, characterized in that: The length of the live working insulating rope is set according to the highest voltage of the test system.