CN112345932A - Intelligent detection system and detection method for high-voltage circuit breaker - Google Patents
Intelligent detection system and detection method for high-voltage circuit breaker Download PDFInfo
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- CN112345932A CN112345932A CN202011313985.5A CN202011313985A CN112345932A CN 112345932 A CN112345932 A CN 112345932A CN 202011313985 A CN202011313985 A CN 202011313985A CN 112345932 A CN112345932 A CN 112345932A
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 230000002159 abnormal effect Effects 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 15
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims abstract description 11
- 230000003750 conditioning effect Effects 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 3
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- 238000006073 displacement reaction Methods 0.000 claims description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
Abstract
The invention provides an intelligent detection system of a high-voltage circuit breaker, which comprises a signal generation unit, a signal acquisition unit, a signal conditioning unit, a control processing unit, a display unit, an alarm unit and a communication unit, wherein the signal generation unit is used for generating a signal; the intelligent detection system of the high-voltage circuit breaker collects various working information of the high-voltage circuit breaker, further analyzes and judges, can find abnormal conditions of the high-voltage circuit breaker in time and sends out an alarm. The invention provides an intelligent detection system and method for a high-voltage circuit breaker, which can monitor the working condition of the high-voltage circuit breaker in real time and ensure the reliability and safety of the high-voltage circuit breaker.
Description
Technical Field
The invention belongs to the technical field of high-voltage circuit breaker detection, and particularly relates to an intelligent detection system and method for a high-voltage circuit breaker.
Background
The high-voltage circuit breaker is an indispensable important component of a power system, can cut off or close no-load current and load current in a high-voltage circuit, and can cut off overload current and short-circuit current through the action of a relay protection device when the system breaks down, so that the high-voltage circuit breaker has a quite perfect arc extinguishing structure and sufficient current breaking capacity. Therefore, the safe and reliable operation of the high-voltage circuit breaker is also an important guarantee for ensuring the reliability of the power system.
The high-voltage circuit breaker generally adopts SF6 gas as an arc extinguishing and insulating medium, but due to the reasons that manufacturers do not strictly control the quality of products, the installation process of construction units is poor, the circuit breaker works in a severe environment for a long time and the like, the phenomenon of SF6 gas leakage is frequent.
The invention provides an intelligent detection system for a high-voltage circuit breaker, which is used for collecting various working information of the high-voltage circuit breaker, carrying out step-by-step progressive judgment, not needing power failure detection, being capable of intelligently detecting whether the high-voltage circuit breaker is abnormal or not, being accurate and safe, and being matched with a plurality of protection devices to carry out protection processing in time.
Disclosure of Invention
The invention provides an intelligent detection system and method for a high-voltage circuit breaker, which can monitor the working condition of the high-voltage circuit breaker in real time and ensure the reliability and safety of the high-voltage circuit breaker.
The invention particularly relates to an intelligent detection system of a high-voltage circuit breaker, which comprises a signal generation unit, a signal acquisition unit, a signal conditioning unit, a control processing unit, a display unit, an alarm unit and a communication unit, wherein the signal acquisition unit is sequentially connected with the signal conditioning unit and the control processing unit; the intelligent detection system of the high-voltage circuit breaker collects various working information of the high-voltage circuit breaker, further analyzes and judges, can find abnormal conditions of the high-voltage circuit breaker in time and sends out an alarm.
And the signal generating unit generates an infrared signal according to the control processing unit and transmits the infrared signal to the high-voltage circuit breaker.
The signal acquisition unit adopts current sensor to acquire high-voltage circuit breaker main loop current, divide-shut brake coil current, adopts voltage sensor to acquire high-voltage circuit breaker main loop voltage, divide-shut brake coil voltage, adopts displacement sensor to acquire high-voltage circuit breaker moving contact stroke signal, adopts pressure sensor to acquire high-voltage circuit breaker closing spring state signal, adopts acceleration sensor to acquire high-voltage circuit breaker vibration signal, adopts infrared sensor to acquire infrared signal's reflected signal intensity.
The signal conditioning unit comprises an amplifying module, a filtering module and an A/D conversion module, amplifies and filters the signals acquired by the signal acquisition unit into signals suitable for the sampling range of the A/D conversion module, and then performs A/D conversion through the A/D conversion module; the filtering module filters high-frequency interference signals by adopting a low-pass filter.
And the control processing unit adopts a microprocessor to carry out intelligent control, analysis and judgment on the intelligent detection system of the high-voltage circuit breaker.
The alarm unit adopts an audible and visual alarm, and can send out an alarm in time when the high-voltage circuit breaker breaks down, and the alarm information is uploaded to a remote monitoring center through the communication unit.
The invention also provides a detection method of the intelligent detection system of the high-voltage circuit breaker, which comprises the following steps:
step (1): and controlling the signal generation unit to generate an infrared signal and transmitting the infrared signal to the high-voltage circuit breaker.
Step (2): the signal acquisition unit acquires the main loop current, the opening and closing coil current, the main loop voltage, the opening and closing coil voltage, the moving contact stroke signal, the closing spring state signal, the vibration signal and the infrared signal reflection signal intensity of the high-voltage circuit breaker;
and (3): amplifying the signal by the amplifying module;
and (4): filtering out high-frequency interference signals through the filtering module;
and (5): the data is subjected to A/D conversion by the A/D conversion module and is transmitted to the control processing unit;
and (6): judging whether the main loop current is in a main loop current reference range or not, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display that the main loop current is abnormal; if not, entering the step (7);
and (7): judging whether the main loop voltage is in a main loop voltage reference range or not, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display that the main loop voltage is abnormal; if not, entering the step (8);
and (8): judging whether the vibration signal is greater than a vibration signal reference value, if so, controlling the alarm unit to give an alarm, and controlling the display unit to display abnormal vibration; if not, entering the step (9);
and (9): calculating SF6 concentration according to the reflection signal of the infrared signal:
k is the absorption coefficient, L is the thickness of SF6, I is the reflected signal strength, I0Is the infrared signal intensity;
step (10): judging whether the SF6 concentration is lower than an SF6 concentration reference value, if so, controlling the alarm unit to give an alarm, and controlling the display unit to display that the SF6 concentration is abnormal; if not, entering the step (11);
step (11): judging whether the current of the opening and closing coil is in the current reference range of the opening and closing coil, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display the current abnormity of the opening and closing coil; if not, entering the step (12);
step (12): judging whether the voltage of the opening and closing coil is in the reference range of the voltage of the opening and closing coil, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display the abnormal voltage of the opening and closing coil; if not, entering the step (13);
step (13): judging whether the moving contact stroke signal is at a moving contact stroke reference position or not, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display that the moving contact acts abnormally; if not, entering the step (14);
step (14): judging whether the closing spring state signal is in a spring reference range or not, if not, controlling the alarm unit to give an alarm and controlling the display unit to cause the spring to be abnormal;
step (15): and uploading the detection information and the fault information of the intelligent high-voltage circuit breaker detection system to the remote monitoring center through the communication unit.
Compared with the prior art, the beneficial effects are: the intelligent detection system for the high-voltage circuit breaker collects various working information of the high-voltage circuit breaker and carries out step-by-step judgment, whether the high-voltage circuit breaker is abnormal or not is intelligently detected, power failure detection is not needed, and fault information is timely transmitted to relevant workers.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent detection system for a high-voltage circuit breaker according to the present invention.
Detailed Description
The following describes in detail a specific embodiment of an intelligent detection system for a high-voltage circuit breaker according to the present invention with reference to the accompanying drawings.
As shown in fig. 1, the intelligent detection system for the high-voltage circuit breaker comprises a signal generation unit, a signal acquisition unit, a signal conditioning unit, a control processing unit, a display unit, an alarm unit and a communication unit, wherein the signal acquisition unit is sequentially connected with the signal conditioning unit and the control processing unit, and the control processing unit is further respectively connected with the signal generation unit, the display unit, the alarm unit and the communication unit.
And the signal generating unit generates an infrared signal according to the control processing unit and transmits the infrared signal to the high-voltage circuit breaker.
The signal acquisition unit adopts current sensor to acquire high-voltage circuit breaker main loop current, divide-shut brake coil current, adopts voltage sensor to acquire high-voltage circuit breaker main loop voltage, divide-shut brake coil voltage, adopts displacement sensor to acquire high-voltage circuit breaker moving contact stroke signal, adopts pressure sensor to acquire high-voltage circuit breaker closing spring state signal, adopts acceleration sensor to acquire high-voltage circuit breaker vibration signal, adopts infrared sensor to acquire infrared signal's reflected signal intensity.
The signal conditioning unit comprises an amplifying module, a filtering module and an A/D conversion module, amplifies and filters the signals acquired by the signal acquisition unit into signals suitable for the sampling range of the A/D conversion module, and then performs A/D conversion through the A/D conversion module; the filtering module filters high-frequency interference signals by adopting a low-pass filter.
The control processing unit adopts a microprocessor to carry out intelligent control and analysis judgment on the intelligent detection system of the high-voltage circuit breaker; the control processing unit further comprises a memory and an input/output interface, wherein the input/output interface adopts a serial interface to complete parameter setting and field information reading of the intelligent detection system of the high-voltage circuit breaker.
The alarm unit adopts an audible and visual alarm, can give an alarm in time when the high-voltage circuit breaker fails, and uploads alarm information to a remote monitoring center through the communication unit; the communication unit adopts GPRS wireless communication technology to carry out communication.
The invention also provides a detection method of the intelligent detection system of the high-voltage circuit breaker, which comprises the following steps: step (1): and controlling the signal generation unit to generate an infrared signal and transmitting the infrared signal to the high-voltage circuit breaker. Step (2): the signal acquisition unit acquires the main loop current, the opening and closing coil current, the main loop voltage and the opening and closing coil of the high-voltage circuit breakerVoltage, a moving contact stroke signal, a closing spring state signal, a vibration signal and the intensity of the infrared signal reflection signal; and (3): amplifying the signal by the amplifying module; and (4): filtering out high-frequency interference signals through the filtering module; and (5): the data is subjected to A/D conversion by the A/D conversion module and is transmitted to the control processing unit; and (6): judging whether the main loop current is in a main loop current reference range or not, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display that the main loop current is abnormal; if not, entering the step (7); and (7): judging whether the main loop voltage is in a main loop voltage reference range or not, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display that the main loop voltage is abnormal; if not, entering the step (8); and (8): judging whether the vibration signal is greater than a vibration signal reference value, if so, controlling the alarm unit to give an alarm, and controlling the display unit to display abnormal vibration; if not, entering the step (9); and (9): calculating SF6 concentration according to the reflection signal of the infrared signal:
k is the absorption coefficient, L is the thickness of SF6, I is the reflected signal strength, I0Is the infrared signal intensity; step (10): judging whether the SF6 concentration is lower than an SF6 concentration reference value, if so, controlling the alarm unit to give an alarm, and controlling the display unit to display that the SF6 concentration is abnormal; if not, entering the step (11); step (11): judging whether the current of the opening and closing coil is in the current reference range of the opening and closing coil, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display the current abnormity of the opening and closing coil; if not, entering the step (12); step (12): judging whether the voltage of the opening and closing coil is in the reference range of the voltage of the opening and closing coil, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display the abnormal voltage of the opening and closing coil; if not, entering the step (13); step (13): judging whether the moving contact stroke signal is at the moving contact stroke reference position or not, if not, controlling the alarm unitThe element sends out an alarm to control the display unit to display the abnormal action of the moving contact; if not, entering the step (14); step (14): judging whether the closing spring state signal is in a spring reference range or not, if not, controlling the alarm unit to give an alarm and controlling the display unit to cause the spring to be abnormal; step (15): and uploading the detection information and the fault information of the intelligent high-voltage circuit breaker detection system to the remote monitoring center through the communication unit.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The intelligent detection system for the high-voltage circuit breaker is characterized by comprising a signal generation unit, a signal acquisition unit, a signal conditioning unit, a control processing unit, a display unit, an alarm unit and a communication unit, wherein the signal acquisition unit is sequentially connected with the signal conditioning unit and the control processing unit, and the control processing unit is also respectively connected with the signal generation unit, the display unit, the alarm unit and the communication unit; the intelligent detection system of the high-voltage circuit breaker collects various working information of the high-voltage circuit breaker, further analyzes and judges, can find abnormal conditions of the high-voltage circuit breaker in time and sends out an alarm.
2. The intelligent detection system for the high-voltage circuit breaker according to claim 1, wherein the signal generation unit generates an infrared signal according to the control processing unit and transmits the infrared signal to the high-voltage circuit breaker.
3. The system of claim 2, wherein the signal acquisition unit acquires the main loop current and the opening and closing coil current of the high-voltage circuit breaker by using a current sensor, acquires the main loop voltage and the opening and closing coil voltage of the high-voltage circuit breaker by using a voltage sensor, acquires the moving contact stroke signal of the high-voltage circuit breaker by using a displacement sensor, acquires the closing spring state signal of the high-voltage circuit breaker by using a pressure sensor, acquires the vibration signal of the high-voltage circuit breaker by using an acceleration sensor, and acquires the intensity of the reflected signal of the infrared signal by using an infrared sensor.
4. The intelligent detection system for the high-voltage circuit breaker according to claim 3, wherein the signal conditioning unit comprises an amplifying module, a filtering module and an A/D conversion module, the signal acquired by the signal acquisition unit is amplified and filtered to be a signal suitable for the sampling range of the A/D conversion module, and the A/D conversion module is used for A/D conversion; the filtering module filters high-frequency interference signals by adopting a low-pass filter.
5. The intelligent detection system for the high-voltage circuit breaker according to claim 4, wherein the control processing unit adopts a microprocessor to perform intelligent control and analysis judgment on the intelligent detection system for the high-voltage circuit breaker.
6. The intelligent detection system for the high-voltage circuit breaker according to claim 5, wherein the alarm unit adopts an audible and visual alarm, can give an alarm in time when the high-voltage circuit breaker fails, and uploads alarm information to a remote monitoring center through the communication unit.
7. The detection method of the intelligent detection system for the high-voltage circuit breaker according to any one of claims 1 to 6, characterized by comprising the following steps:
step (1): and controlling the signal generation unit to generate an infrared signal and transmitting the infrared signal to the high-voltage circuit breaker.
Step (2): the signal acquisition unit acquires the main loop current, the opening and closing coil current, the main loop voltage, the opening and closing coil voltage, the moving contact stroke signal, the closing spring state signal, the vibration signal and the infrared signal reflection signal intensity of the high-voltage circuit breaker;
and (3): amplifying the signal by the amplifying module;
and (4): filtering out high-frequency interference signals through the filtering module;
and (5): the data is subjected to A/D conversion by the A/D conversion module and is transmitted to the control processing unit;
and (6): judging whether the main loop current is in a main loop current reference range or not, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display that the main loop current is abnormal; if not, entering the step (7);
and (7): judging whether the main loop voltage is in a main loop voltage reference range or not, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display that the main loop voltage is abnormal; if not, entering the step (8);
and (8): judging whether the vibration signal is greater than a vibration signal reference value, if so, controlling the alarm unit to give an alarm, and controlling the display unit to display abnormal vibration; if not, entering the step (9);
and (9): calculating SF6 concentration according to the reflection signal of the infrared signal:
k is the absorption coefficient, L is the thickness of SF6, I is the reflected signal strength, I0Is the infrared signal intensity;
step (10): judging whether the SF6 concentration is lower than an SF6 concentration reference value, if so, controlling the alarm unit to give an alarm, and controlling the display unit to display that the SF6 concentration is abnormal; if not, entering the step (11);
step (11): judging whether the current of the opening and closing coil is in the current reference range of the opening and closing coil, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display the current abnormity of the opening and closing coil; if not, entering the step (12);
step (12): judging whether the voltage of the opening and closing coil is in the reference range of the voltage of the opening and closing coil, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display the abnormal voltage of the opening and closing coil; if not, entering the step (13);
step (13): judging whether the moving contact stroke signal is at a moving contact stroke reference position or not, if not, controlling the alarm unit to give an alarm, and controlling the display unit to display that the moving contact acts abnormally; if not, entering the step (14);
step (14): judging whether the closing spring state signal is in a spring reference range or not, if not, controlling the alarm unit to give an alarm and controlling the display unit to cause the spring to be abnormal;
step (15): and uploading the detection information and the fault information of the intelligent high-voltage circuit breaker detection system to the remote monitoring center through the communication unit.
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