Operation monitoring method and monitoring device of circuit breaker and circuit breaker

Abstract

The invention discloses an operation monitoring method for a circuit breaker. The operation monitoring method comprises the following steps: acquiring environmental parameters, electrical parameters and mechanical parameters when the circuit breaker operates; environment parameter detection is carried out according to the environment parameters, and an environment detection result is obtained; performing electrical parameter detection according to the electrical parameters, and obtaining an electrical detection result; and performing mechanical parameter detection according to the mechanical parameters, and obtaining a mechanical detection result. And determining a response action of the circuit breaker according to the environment detection result, the electrical detection result and the mechanical detection result, and sending out corresponding early warning information. The invention also discloses a corresponding monitoring device and a circuit breaker. According to the invention, the operation parameters of the circuit breaker are comprehensively monitored, various operation parameters of the circuit breaker are obtained in real time, and response is made in time when the fault of the circuit breaker is determined according to the operation parameters, so that comprehensive monitoring of the circuit breaker is realized, and the safety and reliability of the circuit breaker are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to an operation monitoring method and a monitoring device for a circuit breaker, and a circuit breaker. Background Art

[0002] The existing monitoring methods for circuit breakers mainly focus on basic electrical parameters such as current and voltage. Although this can reflect some of the operating conditions of the circuit breaker to a certain extent, it is far from comprehensive. For example, by monitoring the current, we can understand whether the circuit breaker is in a normal current-carrying state, and by monitoring the voltage, we can only reflect the voltage condition in the circuit, thereby helping to determine the fault location of the circuit breaker. It can be seen that monitoring the basic electrical parameters of the circuit breaker cannot reveal the actual situation of the internal mechanical structure of the circuit breaker. When the mechanical parts of the circuit breaker have problems such as wear, jamming or loosening, they cannot be discovered in time. The mechanical performance of the circuit breaker and other potential problems are difficult to detect. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an operation monitoring method, a monitoring device and a circuit breaker of a circuit breaker, which can realize comprehensive monitoring of the circuit breaker and improve the reliability of the circuit breaker.

[0004] To solve the above technical problems, as a first aspect of the present invention, a method for monitoring the operation of a circuit breaker is provided, the method comprising: obtaining environmental parameters, electrical parameters and mechanical parameters when the circuit breaker is running; performing environmental parameter detection according to the environmental parameters and obtaining environmental detection results; performing electrical parameter detection according to the electrical parameters and obtaining electrical detection results; performing mechanical parameter detection according to the mechanical parameters and obtaining mechanical detection results; determining a response action of the circuit breaker according to the environmental detection results, the electrical detection results and the mechanical detection results, and issuing corresponding early warning information.

[0005] Optionally, performing environmental parameter detection according to the environmental parameters and obtaining environmental detection results include: determining the temperature parameter and humidity parameter of the circuit breaker based on the environmental parameters; detecting whether the temperature parameter exceeds a first temperature range, and determining that the temperature parameter is abnormal when the temperature parameter exceeds the first temperature range; determining that the temperature parameter is normal when the temperature parameter is within the first temperature range; detecting whether the humidity parameter exceeds a first humidity range, and determining that the humidity parameter is abnormal when the humidity parameter exceeds the first humidity range; and determining that the humidity parameter is normal when the humidity parameter is within the first humidity range.

[0006] Optionally, performing electrical parameter detection according to the electrical parameters and obtaining electrical detection results include: determining the current parameter and voltage parameter of the circuit breaker based on the electrical parameters; detecting whether the current parameter exceeds a first current range, and determining that the current parameter is abnormal when the current parameter exceeds the first current range; determining that the current parameter is normal when the current parameter is within the first current range; detecting whether the voltage parameter exceeds a first voltage range, and determining that the voltage parameter is abnormal when the voltage parameter exceeds the first voltage range; and determining that the voltage parameter is normal when the voltage parameter is within the first voltage range.

[0007] Optionally, performing mechanical parameter detection according to the mechanical parameters and obtaining mechanical detection results includes: determining the displacement parameter and speed parameter of the circuit breaker based on the mechanical parameters; detecting whether the displacement parameter exceeds a first displacement range, and determining that the displacement parameter is abnormal when the displacement parameter exceeds the first displacement range; determining that the displacement parameter is normal when the displacement parameter is within the first displacement range; detecting whether the speed parameter exceeds a first speed range, and determining that the speed parameter is abnormal when the speed parameter exceeds the first speed range; and determining that the speed parameter is normal when the speed parameter is within the first speed range.

[0008] Optionally, when it is determined that the temperature parameter is abnormal, the method further includes: calling a pre-stored temperature parameter-speed parameter association model, and determining the speed parameter of the circuit breaker according to the temperature parameter-speed parameter association model; according to the speed parameter of the circuit breaker, executing the step of detecting whether the speed parameter exceeds a first speed range, and when it is determined that the speed parameter is abnormal, controlling the circuit breaker to turn off the automatic reclosing function.

[0009] Optionally, when it is determined that the humidity parameter is abnormal, the method further includes: calling a pre-stored humidity parameter-displacement parameter association model, and determining the displacement parameter of the circuit breaker according to the humidity parameter-displacement parameter association model; according to the displacement parameter of the circuit breaker, executing the step of detecting whether the displacement parameter exceeds a first displacement range, and when it is determined that the displacement parameter is abnormal, controlling the circuit breaker to turn off the automatic reclosing function.

[0010] Optionally, when it is determined that the current parameter is abnormal, the method further includes: calling a pre-stored current parameter-temperature parameter association model, and determining the temperature parameter of the circuit breaker according to the current parameter-temperature parameter association model; according to the temperature parameter of the circuit breaker, executing the step of detecting whether the temperature parameter exceeds a first temperature range, and when it is determined that the temperature parameter is abnormal, controlling the circuit breaker to turn off the automatic reclosing function.

[0011] Optionally, determining the response action of the circuit breaker according to the environmental detection results, the electrical detection results and the mechanical detection results, and issuing a corresponding warning message includes: when the temperature parameter is determined to be abnormal according to the environmental detection results, adjusting the temperature parameter of the circuit breaker, and issuing a temperature parameter abnormal warning message; when the humidity parameter is determined to be abnormal according to the environmental detection results, adjusting the humidity parameter of the circuit breaker, and issuing a humidity parameter abnormal warning message; when the current parameter is determined to be abnormal according to the electrical detection results, adjusting the current parameter of the circuit breaker, and issuing a current parameter abnormal warning message; when the voltage parameter is determined to be abnormal according to the electrical detection results, adjusting the voltage parameter of the circuit breaker, and issuing a voltage parameter abnormal warning message; when the displacement parameter is determined to be abnormal according to the mechanical detection results, adjusting the displacement parameter of the circuit breaker, and issuing a displacement parameter abnormal warning message; when the speed parameter is determined to be abnormal according to the mechanical detection results, adjusting the speed parameter of the circuit breaker, and issuing a speed parameter abnormal warning message.

[0012] As another aspect of the present invention, a monitoring device is also proposed, which includes: a processor and a memory, wherein a circuit breaker monitoring program is stored on the processor, and when the circuit breaker monitoring program is executed by the processor, the steps of the circuit breaker operation monitoring method as described above are implemented.

[0013] As another aspect of the present invention, a circuit breaker is also provided, and the circuit breaker comprises the monitoring device.

[0014] The implementation of the embodiments of the present invention has the following beneficial effects:

[0015] The present invention provides an operation monitoring method, a monitoring device and a circuit breaker for a circuit breaker. By acquiring environmental parameters, electrical parameters and mechanical parameters when the circuit breaker is in operation; performing environmental parameter detection according to environmental parameters and obtaining environmental detection results; performing electrical parameter detection according to electrical parameters and obtaining electrical detection results; performing mechanical parameter detection according to mechanical parameters and obtaining mechanical detection results. Determine the response action of the circuit breaker according to the environmental detection results, the electrical detection results and the mechanical detection results, and issue corresponding early warning information. The present invention comprehensively monitors the operating parameters of the circuit breaker, obtains various operating parameters of the circuit breaker in real time, and determines that a timely response is made when a circuit breaker fails according to the operating parameters, thereby achieving comprehensive monitoring of the circuit breaker and improving the safety and reliability of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0017] Figure 1 A schematic diagram of the main process of an embodiment of a method for monitoring operation of a circuit breaker provided by the present invention;

[0018] Figure 2 A schematic diagram of the main process of another embodiment of a method for monitoring operation of a circuit breaker provided by the present invention;

[0019] Figure 3 A schematic diagram of the main process of another embodiment of a method for monitoring operation of a circuit breaker provided by the present invention;

[0020] Figure 4 A schematic diagram of the main process of another embodiment of a method for monitoring operation of a circuit breaker provided by the present invention;

[0021] Figure 5 A schematic diagram of the main process of another embodiment of a method for monitoring operation of a circuit breaker provided by the present invention;

[0022] Figure 6 A schematic diagram of the main process of another embodiment of a method for monitoring operation of a circuit breaker provided by the present invention;

[0023] Figure 7 A schematic diagram of the main process of another embodiment of a method for monitoring operation of a circuit breaker provided by the present invention;

[0024] Figure 8 A schematic diagram of the main process of another embodiment of a method for monitoring operation of a circuit breaker provided by the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1 The above is a schematic diagram of the main process of an embodiment of a method for monitoring the operation of a circuit breaker provided by the present invention. In this embodiment, the method at least includes the following steps:

[0027] Step S100, obtaining environmental parameters, electrical parameters and mechanical parameters of the circuit breaker during operation;

[0028] Step S200: Perform environmental parameter detection according to the environmental parameters and obtain environmental detection results;

[0029] Step S300, performing electrical parameter detection according to the electrical parameters, and obtaining electrical detection results;

[0030] Step S400, performing mechanical parameter detection according to the mechanical parameters, and obtaining mechanical detection results;

[0031] Step S500: determining a response action of the circuit breaker according to the environmental detection result, the electrical detection result and the mechanical detection result, and issuing a corresponding warning message.

[0032] It is understandable that many current monitoring methods are mainly focused on monitoring basic electrical parameters such as current and voltage. However, the performance of the circuit breaker depends not only on these electrical parameters, but also on mechanical properties, environmental parameters and other aspects. A single monitoring parameter cannot fully reflect the operating status of the circuit breaker. For example, it is difficult to detect wear and jamming of the internal mechanical parts of the circuit breaker only through current monitoring. These problems may cause the circuit breaker to fail to operate normally at critical moments, affecting the reliability of the power system. In view of the above shortcomings, the present invention comprehensively monitors the environmental parameters, electrical parameters and mechanical parameters of the circuit breaker, obtains various operating parameters of the circuit breaker in real time, and through comprehensive analysis of various parameters, can more accurately determine the operating status of the circuit breaker and timely discover potential fault hazards. When it is monitored that the operating parameters of the circuit breaker are beyond the normal range, the circuit breaker is immediately controlled to respond, and an early warning message is issued to remind the staff to handle it.

[0033] In this embodiment, environmental parameters are external conditions for the operation of the circuit breaker, and environmental parameters have a fundamental impact on the electrical and mechanical properties of the circuit breaker. First, monitoring environmental parameters can monitor the external environment of the circuit breaker, such as monitoring whether the temperature parameters and humidity parameters are within the normal range. The high temperature and high humidity environment will directly affect the insulation performance and heat dissipation of the circuit breaker, and easily cause the circuit breaker to be an electrical fault and a mechanical fault. Secondly, electrical parameters reflect the internal electrical properties of the circuit breaker, and electrical parameters are a direct reflection of the operating status of the circuit breaker. After completing the monitoring of the external environment of the circuit breaker, monitoring the electrical parameters of the circuit breaker can help determine whether the circuit breaker is working normally in the current environment, such as whether the current parameters and voltage parameters are within the normal range. It can be achieved on the basis of monitoring the external environment, and in-depth monitoring of the internal electrical performance of the circuit breaker. Finally, mechanical parameters involve the operating status of the internal mechanical components of the circuit breaker, such as monitoring whether the displacement parameters and speed parameters of the contacts are within the normal range. Since the performance of the mechanical components of the circuit breaker is often affected by both electrical parameters and environmental parameters, monitoring the mechanical parameters can more specifically observe the actual performance of the mechanical components under the influence of these conditions, provided that the environmental and electrical conditions are already clear. More often than not, mechanical failures usually gradually appear after electrical failures or environmental changes.

[0034] In practical applications, the operating parameters of the circuit breaker are first obtained during operation, and the operating parameters include environmental parameters, electrical parameters, and mechanical parameters. And the circuit breaker is tested for environmental parameters, electrical parameters, and mechanical parameters in sequence. When the circuit breaker is tested for environmental parameters, the corresponding environmental test results are obtained; when the circuit breaker is tested for electrical parameters, the corresponding electrical test results are obtained; when the circuit breaker is tested for mechanical parameters, the corresponding mechanical test results are obtained. Results are analyzed according to the environmental test results, electrical test results, and mechanical test results. For example, when it is determined that the environmental parameters of the circuit breaker are abnormal according to the environmental test results, the environmental parameters of the circuit breaker are adjusted so that the environmental parameters of the circuit breaker are within a safe range; when it is determined that the electrical parameters of the circuit breaker are abnormal according to the electrical test results, the electrical parameters of the circuit breaker are adjusted so that the electrical parameters of the circuit breaker are within a safe range; when it is determined that the mechanical parameters of the circuit breaker are abnormal according to the mechanical test results, the mechanical parameters of the circuit breaker are adjusted so that the mechanical parameters of the circuit breaker are within a safe range. When any operating parameter is abnormal, an early warning message is immediately issued to remind the staff to handle it. Among them, the early warning information can be conveyed to relevant personnel through text messages, emails, sound and light alarms, etc., so that timely measures can be taken.

[0035] The present invention proposes a method for monitoring the operation of a circuit breaker, the method comprising: obtaining environmental parameters, electrical parameters and mechanical parameters when the circuit breaker is in operation; performing environmental parameter detection according to environmental parameters and obtaining environmental detection results; performing electrical parameter detection according to electrical parameters and obtaining electrical detection results; performing mechanical parameter detection according to mechanical parameters and obtaining mechanical detection results. The response action of the circuit breaker is determined according to the environmental detection results, electrical detection results and mechanical detection results, and corresponding early warning information is issued. The present invention comprehensively monitors the operating parameters of the circuit breaker, obtains various operating parameters of the circuit breaker in real time, and determines that a timely response is made when a circuit breaker fails according to the operating parameters, thereby achieving comprehensive monitoring of the circuit breaker and improving the safety and reliability of the circuit breaker.

[0036] Reference Figure 2 As shown, in one embodiment, in the step S200, performing environmental parameter detection according to the environmental parameters, and obtaining environmental detection results includes:

[0037] Step S210: determining the temperature parameter and humidity parameter of the circuit breaker based on the environmental parameter;

[0038] Step S220, detecting whether the temperature parameter exceeds a first temperature range, and determining that the temperature parameter is abnormal when the temperature parameter exceeds the first temperature range; and determining that the temperature parameter is normal when the temperature parameter is within the first temperature range;

[0039] Step S230, detecting whether the humidity parameter exceeds a first humidity range, and determining that the humidity parameter is abnormal when the humidity parameter exceeds the first humidity range; and determining that the humidity parameter is normal when the humidity parameter is within the first humidity range.

[0040] It is understandable that in this embodiment, the first temperature range is set to 70°C as an example for explanation. Specifically, the temperature parameters of the circuit breaker are determined according to the environmental parameters. When the temperature parameter is detected to be over 70°C, it is determined that the temperature parameter is abnormal, and the heat dissipation device inside the circuit breaker is started to adjust the temperature parameter. For example, a small fan inside the circuit breaker is started to enhance air convection and help dissipate heat so that the temperature parameter is lower than 70°C; when the temperature parameter is detected to be less than 70°C, it is determined that the temperature parameter is normal. In another embodiment, when the circuit breaker is in an extremely high temperature condition and the corresponding heat dissipation measures cannot effectively reduce the temperature of the circuit breaker, in order to prevent serious consequences such as damage to the insulating material inside the circuit breaker, the circuit breaker is controlled to trip and send an alarm signal to remind the staff to deal with it immediately.

[0041] In this embodiment, the first humidity range is set to 80% relative humidity as an example for explanation. Specifically, the humidity parameter of the circuit breaker is determined according to the environmental parameters. When the humidity parameter is detected to exceed 80% relative humidity, it is determined that the humidity parameter is abnormal, and the dehumidification device inside the circuit breaker is started to adjust the humidity parameter. For example, the heating component inside the circuit breaker is started to reduce the humidity of the surrounding air to prevent moisture from condensing on electrical components and mechanical parts, affecting the insulation performance and mechanical flexibility, so that the humidity parameter is lower than 80% relative humidity; when the humidity parameter is detected to be less than 80% relative humidity, it is determined that the humidity parameter is normal. In another embodiment, when the humidity of the circuit breaker is abnormally high or even accompanied by other abnormal electrical parameters, the circuit breaker is controlled to suspend the automatic reclosing function to avoid faults caused by opening and closing operations under poor insulation performance.

[0042] Reference Figure 3 In one embodiment, in step S300, performing electrical parameter detection according to the electrical parameters and obtaining electrical detection results includes:

[0043] Step S310: determining current parameters and voltage parameters of the circuit breaker based on the electrical parameters;

[0044] Step S320, detecting whether the current parameter exceeds a first current range, and determining that the current parameter is abnormal when the current parameter exceeds the first current range; and determining that the current parameter is normal when the current parameter is within the first current range;

[0045] Step S330, detecting whether the voltage parameter exceeds a first voltage range, and determining that the voltage parameter is abnormal when the voltage parameter exceeds the first voltage range; and determining that the voltage parameter is normal when the voltage parameter is within the first voltage range.

[0046] It is understandable that in this embodiment, the first current range is set to 10% of the rated current as an example for explanation. Specifically, the current parameter of the circuit breaker is determined according to the electrical parameter. When the detected current parameter exceeds 10% of the rated current, it is determined that the current parameter is abnormal, and the adjustable load device is started to adjust the current parameter. For example, in an industrial environment, reducing the speed of an adjustable speed motor can reduce the load current of the motor; when the detected current parameter does not exceed 10% of the rated current, the current parameter is determined to be normal. In another embodiment, when the current parameter further increases to reach the short-circuit current level, the circuit breaker is controlled to trip quickly. For example, in the case where the short-circuit current is more than 10 times the rated current, the short-circuit protection device inside the circuit breaker is controlled to react within a few milliseconds to cut off the circuit to prevent serious consequences such as equipment damage and electrical fires.

[0047] In this embodiment, the first voltage range is set to 10% of the rated voltage as an example for explanation. Specifically, the voltage parameters of the circuit breaker are determined according to the electrical parameters. When the voltage parameters are detected to exceed 10% of the rated voltage, it is determined that the voltage parameters are abnormal, and the transformer is started to adjust the voltage parameters. For example, the step-down transformer is started, and the step-down transformer tap is adjusted in the direction of a large turns ratio to reduce the output voltage. When the voltage parameter is detected to be less than 10% of the rated voltage, it is determined that the voltage parameter is normal. In another embodiment, when the voltage parameters fluctuate frequently and with a large amplitude, it is necessary to monitor the voltage parameters and other related electrical parameters more frequently, and temporarily reduce the priority of some non-critical functions to concentrate resources to ensure that the basic protection functions are normal during voltage abnormalities.

[0048] Reference Figure 4 In one embodiment, in step S400, performing mechanical parameter detection according to the mechanical parameters and obtaining mechanical detection results includes:

[0049] S410, determining a displacement parameter and a speed parameter of the circuit breaker based on the mechanical parameter;

[0050] S420, detecting whether the displacement parameter exceeds a first displacement range, and determining that the displacement parameter is abnormal when the displacement parameter exceeds the first displacement range; and determining that the displacement parameter is normal when the displacement parameter is within the first displacement range;

[0051] S430, detecting whether the speed parameter exceeds a first speed range, and determining that the speed parameter is abnormal when the speed parameter exceeds the first speed range; and determining that the speed parameter is normal when the speed parameter is within the first speed range.

[0052] It is understandable that in this embodiment, the first displacement range is 10% of the normal end position as an example for explanation. Specifically, the displacement parameters of the circuit breaker are determined according to the mechanical parameters. The displacement parameters include closing displacement and opening displacement. The normal closing displacement of the circuit breaker is 10mm. When the closing displacement is detected to reach 11mm or 9mm, the displacement parameter is determined to be abnormal. Alternatively, the normal opening displacement of the circuit breaker is 20mm. When the opening displacement is detected to reach 22mm or 18mm, the displacement parameter is determined to be abnormal. When the displacement parameter of the circuit breaker is detected to be abnormal, the small motor or electromagnetic adjustment device inside it is controlled to fine-tune the position of the operating mechanism so that the displacement of the contact returns to the normal range. In another embodiment, if the displacement of the circuit breaker is abnormally large and cannot be restored by automatic calibration, the circuit breaker is controlled to issue a serious fault alarm and the automatic reclosing function of the circuit breaker is prohibited to prevent equipment damage caused by operation under abnormal mechanical position.

[0053] In this embodiment, the first speed range is 20% of the standard speed as an example for explanation. Specifically, the speed parameter of the circuit breaker is determined according to the mechanical parameter, and when the speed parameter is detected to be more than 20%, for example. The normal closing speed of the circuit breaker is 1m / s. When the closing speed is lower than 0.8m / s or higher than 1.2m / s, the speed parameter is determined to be abnormal. That is, the drive component inside the circuit breaker is started to adjust the driving power of the drive component. For example, when the closing speed is too slow, the driving current of the electromagnetic closing device inside the circuit breaker is appropriately increased to increase the closing speed; when the speed is too fast, the speed of the speed control device inside the circuit breaker is reduced.

[0054] Reference Figure 5 As shown, in one embodiment, in the step S500, when it is determined that the temperature parameter is abnormal, the method further includes:

[0055] S500, calling a pre-stored temperature parameter-speed parameter association model, and determining the speed parameter of the circuit breaker according to the temperature parameter-speed parameter association model;

[0056] S600. According to the speed parameter of the circuit breaker, execute the step of detecting whether the speed parameter exceeds a first speed range, and when it is determined that the speed parameter is abnormal, control the circuit breaker to turn off the automatic reclosing function.

[0057] It is understandable that when the temperature of the circuit breaker rises, according to the principle of thermal expansion, the mechanical parts inside it will expand, affecting the size of the mechanical parts, and the change in the size of the mechanical parts will affect the operating speed. Taking the closing process as an example, the increase in the length of the contact rod may make the closing stroke longer. If the power of the driving mechanism remains unchanged, the time required to complete the closing will increase, that is, the closing speed will slow down. On the contrary, when the temperature decreases, the mechanical parts shrink and the closing speed may become faster. It can be understood that when the temperature of the circuit breaker is abnormal, its speed is also easily affected and becomes abnormal. Therefore, this embodiment associates the temperature parameter with the speed parameter to establish a corresponding temperature parameter-speed parameter association model. When it is determined that the temperature parameter is abnormal, the pre-stored temperature parameter-speed parameter association model is immediately called, and the speed parameter of the circuit breaker is obtained according to the association model. When the speed parameter is detected and it is determined that the speed parameter of the circuit breaker is also abnormal, the circuit breaker is controlled to turn off the automatic reclosing function, thereby avoiding the temperature parameter and speed parameter being abnormal at the same time, causing a serious fault of the circuit breaker.

[0058] Reference Figure 6 As shown, in one embodiment, in the step S500, when it is determined that the humidity parameter is abnormal, the method further includes:

[0059] S700, calling a pre-stored humidity parameter-displacement parameter association model, and determining the displacement parameter of the circuit breaker according to the humidity parameter-displacement parameter association model;

[0060] S800. According to the displacement parameter of the circuit breaker, execute the step of detecting whether the displacement parameter exceeds a first displacement range, and when it is determined that the displacement parameter is abnormal, control the circuit breaker to turn off the automatic reclosing function.

[0061] It is understandable that humidity changes can affect the friction between the mechanical parts of the circuit breaker. In a high humidity environment, moisture may form a thin layer of water film on the surface of the mechanical parts of the circuit breaker. For example, in the operating mechanism of the circuit breaker, changes in the friction between the connecting rods can cause the displacement and final position of the connecting rods during movement to be different from normal. It can be understood that when the humidity of the circuit breaker is abnormal, its displacement is also easily affected and becomes abnormal. Therefore, this embodiment associates the humidity parameter with the displacement parameter to establish a corresponding humidity parameter-displacement parameter association model. When it is determined that the humidity parameter is abnormal, the pre-stored humidity parameter-displacement parameter association model is immediately called, and the displacement parameter of the circuit breaker is obtained according to the association model. When the displacement parameter is detected and it is determined that the displacement parameter is also abnormal, the circuit breaker is controlled to turn off the automatic reclosing function, thereby avoiding the humidity parameter and the displacement parameter being abnormal at the same time, causing a serious fault of the circuit breaker.

[0062] Reference Figure 7 As shown, in one embodiment, in step S500, when it is determined that the current parameter is abnormal, the method further includes:

[0063] S900, calling a pre-stored current parameter-temperature parameter association model, and determining the temperature parameter of the circuit breaker according to the current parameter-temperature parameter association model;

[0064] S1000. According to the temperature parameter of the circuit breaker, execute the step of detecting whether the temperature parameter exceeds a first temperature range, and when it is determined that the temperature parameter is abnormal, control the circuit breaker to turn off the automatic reclosing function.

[0065] It is understandable that, according to Joule's law, when current passes through a conductor, heat is generated. When resistance and time are constant, the heat is proportional to the square of the current. Therefore, heat is generated when current passes through the contacts and connecting conductors of the circuit breaker. If the current increases, the heat generated will increase rapidly. It can be understood that when the current of the circuit breaker is abnormal, its temperature is also easily affected and becomes abnormal. Therefore, this embodiment associates the current parameter with the temperature parameter to establish a corresponding current parameter-temperature parameter association model. When it is determined that the current parameter is abnormal, the pre-stored current parameter-temperature parameter association model is immediately called, and the temperature parameter of the circuit breaker is obtained according to the association model. When the temperature parameter is detected and it is determined that the temperature parameter is also abnormal, the circuit breaker is controlled to turn off the automatic reclosing function, thereby avoiding the humidity parameter and the temperature parameter being abnormal at the same time, causing a serious failure of the circuit breaker.

[0066] Reference Figure 8 As shown, in one embodiment, in step S500, determining the response action of the circuit breaker according to the environmental detection result, the electrical detection result and the mechanical detection result, and issuing the corresponding warning information includes:

[0067] S510, when it is determined according to the environmental detection result that the temperature parameter is abnormal, adjusting the temperature parameter of the circuit breaker and issuing a temperature parameter abnormality warning message;

[0068] S520, when it is determined according to the environmental detection result that the humidity parameter is abnormal, adjusting the humidity parameter of the circuit breaker and issuing humidity parameter abnormality warning information;

[0069] S530, when it is determined according to the electrical detection result that the current parameter is abnormal, adjusting the current parameter of the circuit breaker and issuing a current parameter abnormality warning message;

[0070] S540, when it is determined according to the electrical detection result that the voltage parameter is abnormal, adjusting the voltage parameter of the circuit breaker and issuing a voltage parameter abnormality warning message;

[0071] S550, when it is determined according to the mechanical detection result that the displacement parameter is abnormal, adjusting the displacement parameter of the circuit breaker and issuing a warning message of abnormal displacement parameter;

[0072] S560: When it is determined according to the mechanical detection result that the speed parameter is abnormal, the speed parameter of the circuit breaker is adjusted, and a speed parameter abnormality warning message is issued.

[0073] It can be understood that in this embodiment, the first temperature range is set to 70°C, the first humidity range is set to 80% relative humidity, the first current range is set to 10% of the rated current, the first voltage range is set to 10% of the rated voltage, the first displacement range is 10% of the normal end position, and the first speed range is 20% of the standard speed as an example for explanation.

[0074] In actual applications, when the temperature parameter exceeds 70°C according to the environmental detection results, the small fan inside the circuit breaker is started to strengthen air convection, help dissipate heat and make the temperature parameter lower than 70°C, and the circuit breaker is controlled to issue a warning message that the temperature parameter is too high to remind the staff that the temperature parameter of the circuit breaker is too high; when the humidity parameter exceeds 80% relative humidity according to the environmental detection results, the heating component inside the circuit breaker is started to reduce the humidity of the surrounding air, and the circuit breaker is controlled to issue a warning message that the humidity parameter is too high to remind the staff that the humidity parameter of the circuit breaker is too high; when the current parameter exceeds 10% of the rated current according to the electrical detection results, the speed of the adjustable speed motor can be reduced, thereby reducing the current size of the circuit breaker, and the circuit breaker is controlled to issue a warning message that the humidity parameter is too high. The circuit breaker sends an over-current warning message to remind the staff that the current parameter of the circuit breaker is too high. When the voltage parameter is determined to be abnormal according to the electrical detection results, the transformer is started to adjust the voltage parameter, and the circuit breaker is controlled to send an over-voltage warning message to remind the staff that the circuit breaker voltage is too high. When the displacement parameter exceeds 10% of the normal end position according to the mechanical detection results, the position of the circuit breaker operating mechanism is adjusted to return the displacement of the contact to the normal range, and the circuit breaker is controlled to send an abnormal displacement warning message to remind the staff that the displacement parameter of the circuit breaker is abnormal. When the speed parameter exceeds 20% according to the mechanical detection results, the drive power of the circuit breaker drive component is adjusted, and the circuit breaker is controlled to send an over-speed warning message to remind the staff that the speed parameter of the circuit breaker is too high.

[0075] In other embodiments, the phenomenon of too low current and too high voltage also occurs. For example, when the current parameter is lower than 10% of the rated current, the current parameter is adjusted to return to a safe range; when the voltage parameter is lower than 10% of the rated voltage, the voltage parameter is adjusted to return to a safe range. The method of adjusting the voltage and current is equivalent to the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0076] In addition, abnormal warning information can be conveyed to relevant personnel via text messages, emails, sound and light alarms, etc., so that timely measures can be taken.

[0077] As another aspect of the present invention, the present invention further proposes a monitoring device, which includes: a processor and a memory, wherein a circuit breaker monitoring program is stored on the processor, and when the circuit breaker monitoring program is executed by the processor, the steps of the circuit breaker operation monitoring method described in the above embodiment are implemented.

[0078] The present invention comprehensively monitors the operating parameters of the circuit breaker through a monitoring device, obtains various operating parameters of the circuit breaker in real time, and responds promptly when a circuit breaker fails according to the operating parameters, thereby achieving comprehensive monitoring of the circuit breaker and improving the safety and reliability of the circuit breaker.

[0079] As another aspect of the present invention, the present invention further provides a circuit breaker, the circuit breaker comprising the monitoring device as described in the above embodiment. The specific structure of the circuit breaker refers to the above embodiment. Since the circuit breaker adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0080] The implementation of the embodiments of the present invention has the following beneficial effects:

[0081] The present invention provides an operation monitoring method, a monitoring device and a circuit breaker for a circuit breaker. By acquiring environmental parameters, electrical parameters and mechanical parameters when the circuit breaker is in operation; performing environmental parameter detection according to environmental parameters and obtaining environmental detection results; performing electrical parameter detection according to electrical parameters and obtaining electrical detection results; performing mechanical parameter detection according to mechanical parameters and obtaining mechanical detection results. Determine the response action of the circuit breaker according to the environmental detection results, the electrical detection results and the mechanical detection results, and issue corresponding early warning information. The present invention comprehensively monitors the operating parameters of the circuit breaker, obtains various operating parameters of the circuit breaker in real time, and determines that a timely response is made when a circuit breaker fails according to the operating parameters, thereby achieving comprehensive monitoring of the circuit breaker and improving the safety and reliability of the circuit breaker.

[0082] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0083] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0084] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for monitoring the operation of a circuit breaker, characterized in that: The method includes: Step S100, obtaining environmental parameters, electrical parameters and mechanical parameters of the circuit breaker during operation; Step S200, performing environmental parameter detection according to the environmental parameters, and obtaining environmental detection results; Step S300, performing electrical parameter detection according to the electrical parameters, and obtaining electrical detection results; Step S400, performing mechanical parameter detection according to the mechanical parameters and obtaining mechanical detection results; Step S500, determining the response action of the circuit breaker according to the environmental detection result, the electrical detection result and the mechanical detection result, and issuing corresponding warning information.

2. The circuit breaker operation monitoring method according to claim 1, characterized in that: In the step S100, performing environmental parameter detection according to the environmental parameters and obtaining environmental detection results include: Based on the environmental parameters, determining a temperature parameter and a humidity parameter of the circuit breaker; Detecting whether the temperature parameter exceeds a first temperature range, and determining that the temperature parameter is abnormal when the temperature parameter exceeds the first temperature range; and determining that the temperature parameter is normal when the temperature parameter is within the first temperature range; It is detected whether the humidity parameter exceeds a first humidity range. When the humidity parameter exceeds the first humidity range, it is determined that the humidity parameter is abnormal; when the humidity parameter is within the first humidity range, it is determined that the humidity parameter is normal.

3. The circuit breaker operation monitoring method according to claim 2, characterized in that: In the step S200, performing electrical parameter detection according to the electrical parameters and obtaining electrical detection results includes: Based on the electrical parameters, determining current parameters and voltage parameters of the circuit breaker; Detecting whether the current parameter exceeds a first current range, and determining that the current parameter is abnormal when the current parameter exceeds the first current range; and determining that the current parameter is normal when the current parameter is within the first current range; Detect whether the voltage parameter exceeds a first voltage range, and determine that the voltage parameter is abnormal when the voltage parameter exceeds the first voltage range; and determine that the voltage parameter is normal when the voltage parameter is within the first voltage range.

4. The circuit breaker operation monitoring method according to claim 3, characterized in that: In the step S300, performing mechanical parameter detection according to the mechanical parameters and obtaining mechanical detection results includes: Based on the mechanical parameters, determining a displacement parameter and a speed parameter of the circuit breaker; Detecting whether the displacement parameter exceeds a first displacement range, and determining that the displacement parameter is abnormal when the displacement parameter exceeds the first displacement range; and determining that the displacement parameter is normal when the displacement parameter is within the first displacement range; It is detected whether the speed parameter exceeds a first speed range. When the speed parameter exceeds the first speed range, it is determined that the speed parameter is abnormal; when the speed parameter is within the first speed range, it is determined that the speed parameter is normal.

5. The circuit breaker operation monitoring method according to claim 3, characterized in that: When determining that the temperature parameter is abnormal, the method further includes: Calling a pre-stored temperature parameter-speed parameter association model, and determining the speed parameter of the circuit breaker according to the temperature parameter-speed parameter association model; According to the speed parameter of the circuit breaker, the step of detecting whether the speed parameter exceeds a first speed range is performed, and when it is determined that the speed parameter is abnormal, the circuit breaker is controlled to turn off the automatic reclosing function.

6. The circuit breaker operation monitoring method according to claim 3, characterized in that: When determining that the humidity parameter is abnormal, the method further includes: Calling a pre-stored humidity parameter-displacement parameter association model, and determining the displacement parameter of the circuit breaker according to the humidity parameter-displacement parameter association model; According to the displacement parameter of the circuit breaker, the step of detecting whether the displacement parameter exceeds a first displacement range is performed, and when it is determined that the displacement parameter is abnormal, the circuit breaker is controlled to turn off an automatic reclosing function.

7. The circuit breaker operation monitoring method according to claim 3, characterized in that: When determining that the current parameter is abnormal, the method further includes: Calling a pre-stored current parameter-temperature parameter association model, and determining the temperature parameter of the circuit breaker according to the current parameter-temperature parameter association model; According to the temperature parameter of the circuit breaker, the step of detecting whether the temperature parameter exceeds a first temperature range is performed, and when it is determined that the temperature parameter is abnormal, the circuit breaker is controlled to turn off the automatic reclosing function.

8. The circuit breaker operation monitoring method according to claim 3, characterized in that: In step S500, determining the response action of the circuit breaker according to the environmental detection result, the electrical detection result and the mechanical detection result, and issuing corresponding warning information includes: When it is determined according to the environmental detection result that the temperature parameter is abnormal, adjusting the temperature parameter of the circuit breaker and issuing a temperature parameter abnormality warning message; When it is determined according to the environmental detection result that the humidity parameter is abnormal, adjusting the humidity parameter of the circuit breaker and issuing a humidity parameter abnormality warning message; When it is determined according to the electrical detection result that the current parameter is abnormal, adjusting the current parameter of the circuit breaker and issuing a warning message of abnormal current parameter; When it is determined according to the electrical detection result that the voltage parameter is abnormal, adjusting the voltage parameter of the circuit breaker and issuing a voltage parameter abnormality warning message; When it is determined according to the mechanical detection result that the displacement parameter is abnormal, adjusting the displacement parameter of the circuit breaker and issuing a warning message of abnormal displacement parameter; When it is determined according to the mechanical detection result that the speed parameter is abnormal, the speed parameter of the circuit breaker is adjusted, and a speed parameter abnormality warning message is issued.

9. A monitoring device, characterized in that: The monitoring device comprises: A processor and a memory, wherein a circuit breaker monitoring program is stored on the processor, and when the circuit breaker monitoring program is executed by the processor, the steps of the circuit breaker operation monitoring method according to any one of claims 1 to 8 are implemented.

10. A circuit breaker, characterized in that: The circuit breaker comprises the monitoring device according to claim 9.

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