Circuit breaker operation management and control system suitable for wind power equipment

Abstract

The invention belongs to the technical field of circuit breaker supervision, and particularly relates to a circuit breaker operation management and control system suitable for wind power equipment, which comprises a circuit breaker service life evaluation module, a circuit breaker surface loss judgment module, a circuit breaker protection detection module, a circuit breaker operation danger analysis module and an operation management and control terminal, the service life of the circuit breaker in the wind power equipment is evaluated and analyzed through the circuit breaker service life evaluation module, and the surface damage degree of the circuit breaker is analyzed through the circuit breaker surface damage judgment module when the service life normal signal is generated. When the meter loss low influence signal is generated, the circuit breaker protection detection module analyzes the operation efficiency performance when the circuit breaker protects the circuit of the wind power equipment, and when the protection qualified signal is generated, the real-time operation risk condition of the circuit breaker is analyzed. The service life detection analysis, the surface condition analysis, the protection performance analysis and the real-time operation risk analysis of the circuit breaker can be effectively combined, progressive evaluation and judgment are carried out, and safe and stable operation of wind power equipment is powerfully ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breaker supervision, and in particular to a circuit breaker operation control system suitable for wind power equipment. Background Art

[0002] With the continuous development and application of wind power technology, the safety and stability of wind power equipment have become the focus of attention. In wind power equipment, circuit breakers are usually installed in the circuit of wind power generator sets, mainly used to cut off and connect load circuits, and cut off fault circuits to prevent accidents from expanding and ensure the safe operation of wind power equipment; As a key component in wind power equipment, the real-time monitoring and intelligent management of the operating status of circuit breakers are of great significance to ensure the stable operation of wind power equipment. At present, it is difficult to effectively combine the life detection analysis, surface condition analysis, protection performance analysis and real-time operation risk analysis of circuit breakers and conduct progressive evaluation and judgment. The intelligence level is low, and it is impossible to make corresponding improvement measures for circuit breakers in time, which is not conducive to reducing the operating risk of wind power equipment. In view of the above technical defects, a solution is now proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a circuit breaker operation control system suitable for wind power equipment, which solves the problem that the prior art is difficult to effectively combine the life detection analysis, surface condition analysis, protection performance analysis and real-time operation risk analysis of the circuit breaker and conduct progressive evaluation and judgment, and the degree of intelligence is low, which is not conducive to ensuring the safe and stable operation of wind power equipment.

[0004] To achieve the above object, the present invention provides the following technical solutions: A circuit breaker operation control system suitable for wind power equipment includes a circuit breaker life assessment module, a circuit breaker surface damage judgment module, a circuit breaker protection detection module, a circuit breaker operation risk analysis module and an operation control terminal; the circuit breaker life assessment module performs life assessment and analysis on the circuit breaker in the wind power equipment, generates a life abnormality signal or a life normal signal through analysis, and sends the life abnormality signal to the operation control terminal, and sends the life normal signal to the circuit breaker surface damage judgment module; After receiving the normal life signal, the circuit breaker surface damage judgment module collects the surface image of the circuit breaker, judges the surface damage degree of the circuit breaker based on the surface image of the circuit breaker, and generates a high-impact surface damage signal or a low-impact surface damage signal, and sends the high-impact surface damage signal to the operation control terminal, and sends the low-impact surface damage signal to the circuit breaker protection detection module; After receiving the low meter loss impact signal, the circuit breaker protection detection module analyzes the operating efficiency of the circuit breaker when performing short-circuit protection, power-off protection, overload protection and overvoltage protection on the circuit of the wind power equipment, generates a protection qualified signal or a protection abnormal signal through analysis, and sends the protection abnormal signal to the operation control terminal, and sends the protection qualified signal to the circuit breaker operation risk analysis module; After receiving the protection qualified signal, the circuit breaker operation risk analysis module analyzes the real-time operation risk status of the circuit breaker, generates an operation risk warning signal or an operation risk optimization signal through analysis, and sends the operation risk warning signal to the operation control terminal. When the operation control terminal receives a life abnormality signal, a high impact signal of meter loss, a protection abnormality signal or an operation risk warning signal, it issues a corresponding warning.

[0005] Furthermore, the specific analysis process of the circuit breaker life assessment module is as follows: The total number of times the circuit breaker switches between the closed and open states in the historical stage is collected and marked as the mechanical switching frequency, the total working time of the circuit breaker in the historical stage is collected and marked as the circuit breaker operation and inspection value, and all the moments of inspection and maintenance for the circuit breaker in the historical stage are collected, the interval between two adjacent groups of moments is marked as the inspection interval time, and all the inspection interval time are averaged to obtain the inspection interval performance value, and the number of inspection interval time exceeding the preset inspection interval time threshold in the historical stage is marked as the inspection exception value; And the increase value of the current contact resistance of the circuit breaker compared to the initial contact resistance is collected and marked as the contact resistance growth value, and the circuit breaker quality value is obtained by numerically calculating the mechanical switching frequency, circuit breaker operation inspection value, isolation performance value, isolation abnormality value and contact resistance growth value, and the circuit breaker quality value is numerically compared with the preset circuit breaker quality threshold. If the circuit breaker quality value exceeds the preset circuit breaker quality threshold, a life abnormality signal is generated; if the circuit breaker quality value does not exceed the preset circuit breaker quality threshold, a life normal signal is generated.

[0006] Furthermore, the specific analysis and judgment process of the circuit breaker meter damage judgment module includes: Based on the surface image of the circuit breaker, it is judged whether there are cracks on its surface. If there are cracks on the surface of the circuit breaker, a high-impact signal of surface loss is generated; if there are no cracks on the surface of the circuit breaker, a corrosion pollution judgment value is obtained through a comprehensive corrosion pollution inspection and analysis, and the corrosion pollution judgment value is numerically compared with a preset corrosion pollution judgment threshold. If the corrosion pollution judgment value exceeds the preset corrosion pollution judgment threshold, a high-impact signal of surface loss is generated; if the corrosion pollution judgment value does not exceed the preset corrosion pollution judgment threshold, a low-impact signal of surface loss is generated.

[0007] Furthermore, the specific analysis process of the comprehensive inspection and analysis of corrosion pollution is as follows: Based on the surface image of the circuit breaker, the area with corrosion on the surface is identified and marked as the corrosion area, the area of ​​all the corrosion areas is obtained and the sum is calculated to obtain the corrosion surface inspection value, and the corrosion depth of all the corrosion areas is averaged to obtain the corrosion depth inspection value; Based on the surface image of the circuit breaker, the area on the surface of the circuit breaker covered with dirt is obtained and its coverage area is marked as the pollution surface inspection value, and the average value of the dirt thickness in the area on the surface of the circuit breaker covered with dirt is collected and marked as the pollution thickness inspection value. The corrosion pollution judgment value is obtained by numerically calculating the corrosion surface inspection value, the corrosion depth inspection value, the pollution surface inspection value and the pollution thickness inspection value.

[0008] Furthermore, the specific analysis process of the circuit breaker protection detection module includes: When the circuit breaker performs short-circuit protection, power-off protection, overload protection and overvoltage protection on the circuit of the wind power equipment, the execution time of the circuit breaker for the corresponding protection action is collected, and the average of all execution times per unit time is calculated to obtain the protection execution time value, and the execution time is numerically compared with the preset execution time threshold, and the number of execution times that exceed the preset execution time threshold per unit time is marked as the protection execution abnormal value; The breaking capacity coefficient is obtained by numerically calculating the protection execution time value and the protection execution abnormality value. The breaking capacity coefficient is numerically compared with the preset breaking capacity coefficient threshold. If the breaking capacity coefficient exceeds the preset breaking capacity coefficient threshold, a protection abnormality signal is generated; if the breaking capacity coefficient does not exceed the preset breaking capacity coefficient threshold, a protection qualified signal is generated.

[0009] Furthermore, the specific analysis process of the circuit breaker risk analysis module includes: The real-time temperatures at several positions in the circuit breaker are collected, and the real-time temperatures at all positions are averaged to obtain the temperature measurement value of the circuit breaker. The vibration data and noise data generated when the circuit breaker is in operation are collected, and the circuit breaker risk assessment value is obtained by numerically calculating the temperature measurement value, vibration data and noise data of the circuit breaker. The circuit breaker risk assessment value is numerically compared with the preset circuit breaker risk assessment threshold value. If the circuit breaker risk assessment value exceeds the preset circuit breaker risk assessment threshold value, it is determined that the circuit breaker is in a dangerous operation state; The total time that the circuit breaker is in a dangerous operation state during the detection period is obtained and marked as the circuit breaker dangerous time value, and the circuit breaker risk evaluation values ​​of all circuit breakers in the detection period are averaged to obtain the circuit breaker risk table value, and the circuit breaker dangerous time value and the circuit breaker risk table value are numerically compared with the preset circuit breaker dangerous time threshold and the preset circuit breaker risk table threshold respectively. If the circuit breaker dangerous time value or the circuit breaker risk table value exceeds the corresponding preset threshold, a dangerous warning signal is generated.

[0010] Furthermore, if the circuit breaker danger time value and the circuit breaker danger meter value do not exceed the corresponding preset threshold value, the gas performance inside the circuit breaker is analyzed to obtain the gas that needs to be monitored inside the circuit breaker, wherein the gases to be monitored include nitrogen, carbon dioxide, helium and sulfur hexafluoride; the average concentration of the corresponding gas in the circuit breaker during the detection period is collected and marked as the concentration measurement value, and if there is a gas inside the circuit breaker whose concentration measurement value is not within the corresponding preset appropriate concentration measurement value range, a danger warning signal is generated; If there is no gas inside the circuit breaker whose concentration value is not within the corresponding preset appropriate concentration value range, the concentration value of the corresponding gas is calculated by difference with the median of the corresponding preset appropriate concentration value range and the absolute value is taken to obtain the concentration value; A set of preset deviation weight values ​​is set in advance for each gas, and the product of the concentration value of the corresponding gas and the corresponding preset deviation weight value is marked as the concentration value. The concentration values ​​of all gases that need to be monitored are summed up to obtain the circuit breaker gas detection value, and the circuit breaker gas detection value is numerically compared with the preset circuit breaker gas detection threshold. If the circuit breaker gas detection value exceeds the preset circuit breaker gas detection threshold, a dangerous warning signal is generated; if the circuit breaker gas detection value does not exceed the preset circuit breaker gas detection threshold, a dangerous priority signal is generated.

[0011] Furthermore, the operation control terminal is communicated with the circuit breaker control performance analysis module, and the circuit breaker control performance analysis module is used to set the control cycle, and the operation control performance of the circuit breaker within the control cycle is analyzed to obtain a control qualification signal or a control abnormality signal, and the control qualification signal or the control abnormality signal is sent to the operation control terminal. When the operation control terminal receives the control abnormality signal, it issues a corresponding warning.

[0012] Furthermore, the specific analysis process of the circuit breaker control performance analysis module is as follows: The number of times the circuit breaker fails within the control cycle is collected and marked as the control abnormal detection value, and the timing starts when the circuit breaker fails until the corresponding fault is resolved to obtain the fault elimination time value, and the fault elimination time value is numerically compared with the corresponding preset fault elimination time threshold. If the fault elimination time value exceeds the preset fault elimination time threshold, the corresponding fault elimination time value is marked as the fault abnormal elimination value, and the number of fault abnormal elimination values ​​within the control cycle is obtained and the ratio of it to the control abnormal detection value is marked as the fault abnormal measurement value; A display warning area is set around the operation control terminal, and the display warning area is monitored. If there is no management personnel in the display warning area, it is determined that the operation control terminal is in an unresponsive state; the total duration of the operation control terminal in the unresponsive state during the control cycle is collected and marked as the unresponsive time table value, and the number of unresponsive single durations exceeding the preset unresponsive single duration threshold during the control cycle is marked as the unresponsive inferior frequency value; The circuit breaker inspection value is obtained by numerically calculating the control abnormal inspection value, fault abnormal measurement value, unmanned response time meter value and unmanned response poor frequency value, and the circuit breaker inspection value is numerically compared with the preset circuit breaker inspection threshold. If the circuit breaker inspection value exceeds the preset circuit breaker inspection threshold, a control abnormal signal is generated; if the circuit breaker inspection value does not exceed the preset circuit breaker inspection threshold, a control qualified signal is generated.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the circuit breaker in the wind power equipment is evaluated and analyzed for its life through the circuit breaker life evaluation module. When a normal life signal is generated, the circuit breaker surface damage judgment module is used to analyze the surface damage degree of the circuit breaker. When a low surface damage impact signal is generated, the circuit breaker protection detection module is used to analyze the operating efficiency performance of the circuit breaker when protecting the circuit of the wind power equipment. When a qualified protection signal is generated, the circuit breaker operation risk analysis module is used to analyze the real-time operation risk status of the circuit breaker. The circuit breaker life detection analysis, surface condition analysis, protection performance analysis and real-time operation risk analysis can be effectively combined and progressively evaluated and judged, which effectively guarantees the safe and stable operation of the wind power equipment and has a high degree of intelligence. 2. In the present invention, a control cycle is set through a circuit breaker control performance analysis module, and the operation control performance of the circuit breaker within the control cycle is analyzed to obtain a control qualified signal or a control abnormal signal. When a control abnormal signal is generated, the operation control terminal issues a corresponding early warning, so as to strengthen the operation control of the circuit breakers in the wind power equipment and the supervision and training of the corresponding management personnel in the future, ensure the subsequent control effect of the circuit breakers in the wind power equipment, and further ensure the subsequent safe and stable operation of the circuit breakers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings; Figure 1 This is a system block diagram of Embodiment 1 of the present invention; Figure 2 This is a flow chart of the method of Embodiment 1 of the present invention; Figure 3 This is a system block diagram of Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0015] 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.

[0016] Embodiment 1: Figure 1-2 As shown, the present invention proposes a circuit breaker operation control system suitable for wind power equipment, including a circuit breaker life assessment module, a circuit breaker surface damage judgment module, a circuit breaker protection detection module, a circuit breaker operation risk analysis module and an operation control terminal; the circuit breaker life assessment module performs life assessment and analysis on the circuit breaker in the wind power equipment, generates a life abnormality signal or a life normal signal through analysis, and sends the life abnormality signal to the operation control terminal. When the operation control terminal receives the life abnormality signal, it issues a corresponding warning, and can reasonably analyze and accurately judge the life status of the circuit breaker, so as to remind the management personnel to replace the circuit breaker in the wind power equipment in time, so as to ensure the subsequent safe and stable operation of the wind power equipment; the specific analysis process of the circuit breaker life assessment module is as follows: The total number of times the circuit breaker switches between the closed and open states in the historical stage is collected and marked as the mechanical switching frequency, the total working time of the circuit breaker in the historical stage is collected and marked as the circuit breaker operation inspection value, and all the moments of inspection and maintenance for the circuit breaker in the historical stage are collected, the interval between two adjacent groups of moments is marked as the inspection interval time, and all the inspection interval time are averaged to obtain the inspection interval performance value, the inspection interval time is numerically compared with the preset inspection interval time threshold, and the number of inspection interval times that exceed the preset inspection interval time threshold in the historical stage is marked as the inspection interval abnormality value; and the increase in the current contact resistance of the circuit breaker compared to the initial contact resistance is collected and marked as the contact resistance growth value; By formula The mechanical switching frequency ZN, the circuit breaker operation inspection value ZK, the isolation performance value ZW, the isolation abnormality value ZR and the contact resistance growth value ZY are numerically calculated to obtain the circuit breaker quality value ZP, wherein rq1, rq2, rq3, rq4 and rq5 are preset proportional coefficients with values ​​greater than zero, and the larger the value of the circuit breaker quality value ZP, the worse the overall life of the circuit breaker in the wind power equipment, and the greater the safety hazard of continued use; The circuit breaker quality condition value ZP is numerically compared with the preset circuit breaker quality condition threshold. If the circuit breaker quality condition value ZP exceeds the preset circuit breaker quality condition threshold, it indicates that the life condition of the circuit breaker in the wind power equipment is generally poor and the circuit breaker needs to be replaced in time, then a life abnormality signal is generated; if the circuit breaker quality condition value ZP does not exceed the preset circuit breaker quality condition threshold, it indicates that the life condition of the circuit breaker in the wind power equipment is generally good, then a life normal signal is generated.

[0017] The circuit breaker life assessment module sends the normal life signal to the circuit breaker surface damage judgment module. After receiving the normal life signal, the circuit breaker surface damage judgment module collects the surface image of the circuit breaker, judges the degree of surface damage of the circuit breaker based on the surface image of the circuit breaker, and generates a high-impact surface damage signal or a low-impact surface damage signal, and sends the high-impact surface damage signal to the operation control terminal. When the operation control terminal receives the high-impact surface damage signal, it issues a corresponding warning, which can reasonably analyze and accurately evaluate the surface condition of the circuit breaker, so that the management personnel can clean the surface of the circuit breaker in time, significantly reducing the safety hazards of the circuit breaker. The specific analysis and judgment process of the circuit breaker surface damage judgment module is as follows: Based on the surface image of the circuit breaker, it is judged whether there are cracks on its surface. If there are cracks on the surface of the circuit breaker, a high-impact signal of surface loss is generated; if there are no cracks on the surface of the circuit breaker, a corrosion pollution judgment value is obtained through comprehensive corrosion pollution inspection and analysis, specifically: based on the surface image of the circuit breaker, the area with corrosion on its surface is identified and marked as a corrosion area, the area of ​​all corrosion areas is obtained and summed to obtain the corrosion surface inspection value, and the corrosion depth of all corrosion areas is averaged to obtain the corrosion depth inspection value; Based on the surface image of the circuit breaker, the area on the circuit breaker surface covered with dirt is obtained and its coverage area is marked as the pollution surface inspection value, and the average value of the dirt thickness in the area on the circuit breaker surface covered with dirt is collected and marked as the pollution thickness inspection value; By formula The corrosion surface inspection value FM, the corrosion depth inspection value FY, the contamination surface inspection value FK and the contamination thickness inspection value FS are numerically calculated to obtain the corrosion contamination judgment value FW; wherein hy1, hy2, hy3, and hy4 are preset proportional coefficients with values ​​greater than zero, and the larger the value of the corrosion contamination judgment value FW is, the worse the surface condition of the circuit breaker is, and the greater the safety hazard is in general; The corrosion pollution judgment value is numerically compared with the preset corrosion pollution judgment threshold. If the corrosion pollution judgment value exceeds the preset corrosion pollution judgment threshold, it indicates that the surface condition of the circuit breaker is poor and the existing safety hazards are generally large, and a high surface loss impact signal is generated; if the corrosion pollution judgment value does not exceed the preset corrosion pollution judgment threshold, it indicates that the surface condition of the circuit breaker is good and the existing safety hazards are generally small, and a low surface loss impact signal is generated.

[0018] The circuit breaker meter loss judgment module sends the meter loss low impact signal to the circuit breaker protection detection module. After receiving the meter loss low impact signal, the circuit breaker protection detection module analyzes the operation efficiency of the circuit breaker when performing short-circuit protection, power-off protection, overload protection and overvoltage protection on the circuit of the wind power equipment, and generates a protection qualified signal or a protection abnormality signal through analysis, and sends the protection abnormality signal to the operation control terminal. When the operation control terminal receives the protection abnormality signal, it issues a corresponding warning so that the management personnel can conduct cause investigation and analysis in time, and make reasonable improvement measures for the circuit breaker, so as to ensure the subsequent protection effect of the circuit breaker on the wind power equipment, and further ensure the subsequent safe and stable operation of the wind power equipment; the specific analysis process of the circuit breaker protection detection module is as follows: When the circuit breaker performs short-circuit protection, power-off protection, overload protection and overvoltage protection on the circuit of the wind power equipment, the execution time of the circuit breaker to perform the corresponding protection action is collected, wherein the larger the execution time value is, the slower the circuit breaker performs the corresponding protection action; the average of all execution times in a unit time is calculated to obtain the protection execution time value, and the execution time is numerically compared with the preset execution time threshold, and the number of execution times in a unit time that exceeds the preset execution time threshold is marked as a protection execution abnormality value; The breaking capacity coefficient WX is obtained by numerically calculating the protection execution value WY and the protection execution abnormality value WF through the formula WX=fg1*WY+fg2*WF, wherein fg1 and fg2 are preset proportional coefficients, and the values ​​of fg1 and fg2 are both positive numbers; and the larger the value of the breaking capacity coefficient WX, the worse the protection execution efficiency of the circuit breaker; the breaking capacity coefficient WX is numerically compared with the preset breaking capacity coefficient threshold, if the breaking capacity coefficient WX exceeds the preset breaking capacity coefficient threshold, it indicates that the protection execution efficiency of the circuit breaker is poor, and a protection abnormality signal is generated; if the breaking capacity coefficient WX does not exceed the preset breaking capacity coefficient threshold, it indicates that the protection execution efficiency of the circuit breaker is good, and a protection qualified signal is generated.

[0019] The circuit breaker protection detection module sends the protection qualified signal to the circuit breaker operation risk analysis module. After receiving the protection qualified signal, the circuit breaker operation risk analysis module analyzes the real-time operation risk status of the circuit breaker, generates an operation risk warning signal or an operation risk optimization signal through analysis, and sends the operation risk warning signal to the operation control terminal. When the operation control terminal receives the operation risk warning signal, it issues a corresponding warning to realize all-round monitoring of the circuit breaker operation status, comprehensively evaluate the operation risk of the circuit breaker and provide timely feedback warning, which is conducive to quickly taking corresponding treatment and improvement measures for the circuit breaker to ensure the real-time operation safety of the circuit breaker in the risk equipment; the specific analysis process of the circuit breaker operation risk analysis module is as follows: The real-time temperatures at several positions in the circuit breaker are collected, and the real-time temperatures at all positions are averaged to obtain the circuit breaker temperature measurement value. The vibration data (i.e., the vibration amplitude of the circuit breaker) and the noise data (i.e., the decibel value of the noise generated during the operation of the circuit breaker) are collected. The circuit breaker temperature measurement value YN, vibration data YG and noise data YL are numerically calculated using the formula YP=(eh1*YN+eh2*YG+eh3*YL) / 3 to obtain the circuit breaker risk assessment value YP. Among them, eh1, eh2, and eh3 are preset proportional coefficients with values ​​greater than zero, and the larger the value of the circuit breaker risk assessment value YP is, the more abnormal the operation state of the circuit breaker at the corresponding moment is; the circuit breaker risk assessment value YP is numerically compared with the preset circuit breaker risk assessment threshold value, and if the circuit breaker risk assessment value YP exceeds the preset circuit breaker risk assessment threshold value, it indicates that the operation state of the circuit breaker at the corresponding moment is relatively abnormal, and the circuit breaker is judged to be in an operation risk state; The total time that the circuit breaker is in a dangerous operation state during the detection period is obtained and marked as the circuit breaker dangerous time value, and the circuit breaker risk evaluation values ​​of all circuit breakers in the detection period are averaged to obtain the circuit breaker risk table value, and the circuit breaker dangerous time value and the circuit breaker risk table value are numerically compared with the preset circuit breaker dangerous time threshold and the preset circuit breaker risk table threshold respectively. If the circuit breaker dangerous time value or the circuit breaker risk table value exceeds the corresponding preset threshold, it indicates that the operation risk of the circuit breaker during the detection period is relatively large, and a risk warning signal is generated.

[0020] Furthermore, if the circuit breaker danger time value and the circuit breaker danger meter value do not exceed the corresponding preset threshold value, the gas performance inside the circuit breaker is analyzed to obtain the gas that needs to be monitored inside the circuit breaker, among which the gases that need to be monitored mainly include nitrogen, carbon dioxide, helium and sulfur hexafluoride (SF6); it should be noted that nitrogen plays a protective role in the circuit breaker, carbon dioxide is used to absorb the gas generated during the discharge process and suppress the generation of arcs, helium plays the role of coolant in the circuit breaker, and the concentration of sulfur hexafluoride gas has an important influence on the electrical insulation performance of the circuit breaker; The average concentration of the corresponding gas in the circuit breaker during the detection period is collected and marked as the concentration value, and the concentration values ​​of all gases are compared with the corresponding preset concentration value ranges one by one. If there is a gas inside the circuit breaker whose concentration value is not within the corresponding preset appropriate concentration value range, a dangerous warning signal is generated; If there is no gas inside the circuit breaker whose concentration measurement value is not within the corresponding preset appropriate concentration measurement value range, the concentration measurement value of the corresponding gas is calculated with the median of the corresponding preset appropriate concentration measurement value range, and the absolute value is taken to obtain the concentration value; a set of preset deviation weight values ​​greater than zero is set in advance for each gas, and the greater the safety hazard brought by the concentration deviation of the corresponding gas, the greater the value of the preset deviation weight value adapted thereto; The product of the concentration value of the corresponding gas and the corresponding preset deviation weight value is marked as the concentration value, the concentration values ​​of all gases that need to be monitored are summed up to obtain the circuit breaker gas detection value, and the circuit breaker gas detection value is numerically compared with the preset circuit breaker gas detection threshold. If the circuit breaker gas detection value exceeds the preset circuit breaker gas detection threshold, it indicates that the gas performance inside the circuit breaker is generally poor and the operating risk is relatively large, then a risk warning signal is generated; if the circuit breaker gas detection value does not exceed the preset circuit breaker gas detection threshold, it indicates that the gas performance inside the circuit breaker is generally good and the operating risk is relatively small, then a risk priority signal is generated.

[0021] Embodiment 2: Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the operation control terminal is connected to the circuit breaker control performance analysis module in communication, and the circuit breaker control performance analysis module is used to set the control period, preferably, the control period is forty days; by analyzing the operation control performance of the circuit breaker within the control period to obtain a control qualified signal or a control abnormal signal, and sending the control qualified signal or the control abnormal signal to the operation control terminal, the operation control terminal issues a corresponding warning when receiving the control abnormal signal, so as to strengthen the operation control of the circuit breaker in the wind power equipment and the supervision and training of the corresponding management personnel in the subsequent control, ensure the subsequent control effect of the circuit breaker in the wind power equipment, and facilitate the subsequent safe and stable operation of the circuit breaker; the specific analysis process of the circuit breaker control performance analysis module is as follows: The number of times the circuit breaker fails within the control cycle is collected and marked as the control abnormal detection value, and the timing starts when the circuit breaker fails until the corresponding fault is resolved to obtain the fault elimination time value, wherein the larger the value of the fault elimination time value is, the slower the processing efficiency of the corresponding fault in the circuit breaker is; the fault elimination time value is numerically compared with the corresponding preset fault elimination time threshold, if the fault elimination time value exceeds the preset fault elimination time threshold, the corresponding fault elimination time value is marked as the fault abnormal elimination value, the number of fault abnormal elimination values ​​within the control cycle is obtained and the ratio of it to the control abnormal detection value is marked as the fault abnormal measurement value; A display warning area is set around the operation control terminal, and the display warning area is monitored. If there is no management personnel in the display warning area, it is determined that the operation control terminal is in an unresponsive state; the total duration of the operation control terminal in the unresponsive state during the control period is collected and marked as the unresponsive time table value, and the duration of the corresponding unresponsive state is collected and marked as the single unresponsive duration, the single unresponsive duration is numerically compared with the preset single unresponsive duration threshold, and the number of single unresponsive durations that exceed the preset single unresponsive duration threshold during the control period is marked as the unresponsive inferior frequency value; The circuit breaker inspection value GN is obtained by numerically calculating the control abnormality inspection value GM, fault abnormality measurement value GP, unattended time meter value GS and unattended poor frequency value GL through the formula GN=(b1*GM+b4*GL) / 2+b2*GP+b3*GS / b4, where b1, b2, b3 and b4 are preset proportional coefficients, and the values ​​of b1, b2, b3 and b4 are all positive numbers; and the larger the value of the circuit breaker inspection value GN, the worse the control performance of the circuit breaker during the control cycle is. The circuit breaker inspection value GN is numerically compared with the preset circuit breaker inspection threshold. If the circuit breaker inspection value GN exceeds the preset circuit breaker inspection threshold, it indicates that the overall control performance of the circuit breaker during the control cycle is poor, and a control abnormality signal is generated; if the circuit breaker inspection value GN does not exceed the preset circuit breaker inspection threshold, it indicates that the overall control performance of the circuit breaker during the control cycle is good, and a control qualified signal is generated.

[0022] The working principle of the present invention is as follows: when in use, the circuit breaker in the wind power equipment is evaluated and analyzed for its life through the circuit breaker life assessment module, so that the life status of the circuit breaker can be reasonably analyzed and accurately determined. When an abnormal life signal is generated, the circuit breaker in the wind power equipment is replaced. When a normal life signal is generated, the circuit breaker surface damage judgment module is used to analyze the surface damage degree of the circuit breaker based on the surface image of the circuit breaker. When a high-impact signal of surface damage is generated, the circuit breaker is cleaned on the surface, etc., so as to significantly reduce the potential safety hazards of the circuit breaker. When a low-impact signal of surface damage is generated, the circuit breaker protection detection module is used to analyze the circuit damage degree of the circuit breaker for the wind power equipment. The operational efficiency performance when performing short-circuit protection, power-off protection, overload protection and overvoltage protection is analyzed. A protection qualification signal or a protection abnormality signal is generated through analysis. When a protection qualification signal is generated, the real-time operation risk status of the circuit breaker is analyzed through the circuit breaker risk analysis module to achieve comprehensive monitoring of the circuit breaker operation status. It can comprehensively evaluate the operation risk of the circuit breaker and provide timely feedback and early warning. By combining the life detection analysis, surface condition analysis, protection performance analysis and real-time operation risk analysis of the circuit breaker and conducting progressive evaluation and judgment, the management difficulty of the circuit breaker is reduced, and the safe and stable operation of wind power equipment is effectively guaranteed.

[0023] The above formulas are all dimensionless and numerical calculations. The formula is a formula obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formula are set by technicians in this field according to actual conditions. The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A circuit breaker operation control system suitable for wind power equipment, characterized in that: It includes a circuit breaker life assessment module, a circuit breaker surface damage judgment module, a circuit breaker protection detection module, a circuit breaker operation risk analysis module and an operation control terminal; the circuit breaker life assessment module performs life assessment and analysis on the circuit breakers in the wind power equipment, generates a life abnormality signal or a life normal signal through analysis, and sends the life abnormality signal to the operation control terminal, and sends the life normal signal to the circuit breaker surface damage judgment module; After receiving the normal life signal, the circuit breaker surface damage judgment module collects the surface image of the circuit breaker, judges the surface damage degree of the circuit breaker based on the surface image of the circuit breaker, and generates a high-impact surface damage signal or a low-impact surface damage signal, and sends the high-impact surface damage signal to the operation control terminal, and sends the low-impact surface damage signal to the circuit breaker protection detection module; After receiving the low meter loss impact signal, the circuit breaker protection detection module analyzes the operating efficiency of the circuit breaker when performing short-circuit protection, power-off protection, overload protection and overvoltage protection on the circuit of the wind power equipment, generates a protection qualified signal or a protection abnormal signal through analysis, and sends the protection abnormal signal to the operation control terminal, and sends the protection qualified signal to the circuit breaker operation risk analysis module; After receiving the protection qualified signal, the circuit breaker operation risk analysis module analyzes the real-time operation risk status of the circuit breaker, generates an operation risk warning signal or an operation risk optimization signal through analysis, and sends the operation risk warning signal to the operation control terminal. When the operation control terminal receives a life abnormality signal, a high impact signal of meter loss, a protection abnormality signal or an operation risk warning signal, it issues a corresponding warning.

2. A circuit breaker operation control system suitable for wind power equipment according to claim 1, characterized in that: The specific analysis process of the circuit breaker life assessment module is as follows: The circuit breaker quality value is obtained by numerically calculating the mechanical switching frequency, circuit breaker operation inspection value, isolation performance value, isolation abnormality value and contact resistance growth value. If the circuit breaker quality value exceeds the preset circuit breaker quality threshold, a life abnormality signal is generated; if the circuit breaker quality value does not exceed the preset circuit breaker quality threshold, a life normal signal is generated.

3. A circuit breaker operation control system suitable for wind power equipment according to claim 1, characterized in that: The specific analysis and judgment process of the circuit breaker table damage judgment module includes: Based on the surface image of the circuit breaker, it is judged whether there are cracks on its surface. If there are cracks on the surface of the circuit breaker, a high-impact signal of surface loss is generated; if there are no cracks on the surface of the circuit breaker, a corrosion pollution judgment value is obtained through comprehensive corrosion pollution inspection and analysis. If the corrosion pollution judgment value exceeds the preset corrosion pollution judgment threshold, a high-impact signal of surface loss is generated; if the corrosion pollution judgment value does not exceed the preset corrosion pollution judgment threshold, a low-impact signal of surface loss is generated.

4. A circuit breaker operation control system suitable for wind power equipment according to claim 3, characterized in that: The specific analysis process of corrosion pollution comprehensive inspection and analysis is as follows: Based on the surface image of the circuit breaker, the area with corrosion on the surface is identified and marked as the corrosion area, the area of ​​all the corrosion areas is obtained and the sum is calculated to obtain the corrosion surface inspection value, and the corrosion depth of all the corrosion areas is averaged to obtain the corrosion depth inspection value; Based on the surface image of the circuit breaker, the area on the surface of the circuit breaker covered with dirt is obtained and its coverage area is marked as the pollution surface inspection value, and the average value of the dirt thickness in the area on the surface of the circuit breaker covered with dirt is collected and marked as the pollution thickness inspection value. The corrosion pollution judgment value is obtained by numerically calculating the corrosion surface inspection value, the corrosion depth inspection value, the pollution surface inspection value and the pollution thickness inspection value.

5. A circuit breaker operation control system suitable for wind power equipment according to claim 1, characterized in that: The specific analysis process of the circuit breaker protection detection module includes: When the circuit breaker performs short-circuit protection, power-off protection, overload protection and overvoltage protection on the circuit of the wind power equipment, the execution time of the circuit breaker for the corresponding protection action is collected, and the average of all execution times per unit time is calculated to obtain the protection execution time value, and the execution time is numerically compared with the preset execution time threshold, and the number of execution times that exceed the preset execution time threshold per unit time is marked as the protection execution abnormal value; The breaking capacity coefficient is obtained by numerically calculating the protection execution time value and the protection execution abnormality value. If the breaking capacity coefficient exceeds the preset breaking capacity coefficient threshold, a protection abnormality signal is generated; if the breaking capacity coefficient does not exceed the preset breaking capacity coefficient threshold, a protection qualified signal is generated.

6. A circuit breaker operation control system suitable for wind power equipment according to claim 1, characterized in that: The specific analysis process of the circuit breaker risk analysis module includes: The circuit breaker risk assessment value is obtained by numerically calculating the circuit breaker temperature measurement value, vibration data and noise data. If the circuit breaker risk assessment value exceeds the preset circuit breaker risk assessment threshold, the circuit breaker is judged to be in an operating risk state; the total time that the circuit breaker is in the operating risk state during the detection period is obtained and marked as the circuit breaker risk time value, and the circuit breaker risk table value is obtained by averaging all the circuit breaker risk assessment values ​​of the circuit breaker in the detection period. If the circuit breaker risk time value or the circuit breaker risk table value exceeds the corresponding preset threshold, an operation risk warning signal is generated.

7. A circuit breaker operation control system suitable for wind power equipment according to claim 6, characterized in that: If the circuit breaker danger time value and the circuit breaker danger meter value do not exceed the corresponding preset threshold value, the gas performance inside the circuit breaker is analyzed to obtain the gas that needs to be monitored inside the circuit breaker. If there is gas inside the circuit breaker whose concentration value is not within the corresponding preset appropriate concentration value range, a danger warning signal is generated; If there is no gas inside the circuit breaker whose concentration value is not within the corresponding preset appropriate concentration value range, the concentration values ​​of all gases that need to be monitored are summed up and calculated to obtain the circuit breaker gas detection value. If the circuit breaker gas detection value exceeds the preset circuit breaker gas detection threshold, a dangerous warning signal is generated; If the circuit breaker gas detection value does not exceed the preset circuit breaker gas detection threshold, a transport risk priority signal is generated.

8. A circuit breaker operation control system suitable for wind power equipment according to claim 1, characterized in that: The operation control terminal is communicated with the circuit breaker control performance analysis module. The circuit breaker control performance analysis module is used to set the control cycle. The operation control performance of the circuit breaker within the control cycle is analyzed to obtain a control qualification signal or a control abnormality signal, and the control qualification signal or the control abnormality signal is sent to the operation control terminal. When the operation control terminal receives the control abnormality signal, it issues a corresponding warning.

9. A circuit breaker operation control system suitable for wind power equipment according to claim 8, characterized in that: The specific analysis process of the circuit breaker control performance analysis module is as follows: The circuit breaker inspection value is obtained by numerically calculating the control abnormal inspection value, fault abnormal measurement value, unmanned response time meter value and unmanned response poor frequency value. If the circuit breaker inspection value exceeds the preset circuit breaker inspection threshold, a control abnormal signal is generated; if the circuit breaker inspection value does not exceed the preset circuit breaker inspection threshold, a control qualified signal is generated.

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