Wind turbine generator system based on proximity switch and overspeed module optimization

Abstract

The invention provides a wind turbine generator system based on proximity switch and overspeed module optimization, and relates to the field of wind turbine generator monitoring, and the wind turbine generator system comprises a WD231-P overspeed module which has a reinforced filtering algorithm, replaces original WD231 and LE2131D modules, and improves the anti-interference capability of rotating speed signals; the YiKe 8mm distance measuring proximity switch replaces the original high-speed and low-speed shaft proximity switches, so that the signal interference jump probability is reduced; the shielding cable is used for signal transmission of the high-speed shaft proximity switch and enhancing the anti-electromagnetic interference performance; and the grounding optimization assembly is used for removing a generator carbon brush to abrade a ground wire at the output end of the power supply switching power supply G53.7 and blocking a high-frequency interference path. According to the scheme, through collaborative design of proximity switch upgrading, overspeed module optimization, cable shielding and grounding transformation, the problem of rotating speed signal interference of the wind turbine generator is solved in a whole chain from signal acquisition, transmission and processing, and stable operation with zero false triggering is achieved.

Description

Technical Field

[0001] This invention relates to the field of wind turbine generator monitoring, and more particularly to a wind turbine generator system optimized based on proximity switches and overspeed modules. Background Technology

[0002] The Yunda turbine units frequently experienced faults such as "5003 - Safety chain rotor overspeed module activation," "5930 - High-speed shaft speed mismatch," "5933 - Rotor speed too high," and "5928 - Generator speed and rotor speed mismatch." Analysis initially determined that these were false triggers caused by interference with the proximity switch signal and insufficient filtering capability of the overspeed module. These faults affect the unit's operational stability and increase maintenance costs, necessitating targeted modifications.

[0003] Traditional solutions rely on existing proximity switches and overspeed modules, which have weak anti-interference capabilities and outdated filtering algorithms, making it impossible to effectively solve signal transition problems, resulting in frequent failures and low maintenance efficiency. Summary of the Invention

[0004] This invention provides a wind turbine system based on proximity switches and overspeed modules to solve the technical problems mentioned in the background.

[0005] To address the aforementioned technical problems, this invention discloses a wind turbine system optimized based on proximity switches and an overspeed module, comprising: WD231-P overspeed module: It features an enhanced filtering algorithm, replacing the original WD231 and LE2131D modules, and improving the anti-interference capability of the speed signal; Yike 8mm ranging proximity switch: Replaces the original high and low speed shaft proximity switches, reducing the probability of signal interference and switching. Shielded cable: Used for high-speed shaft proximity switch signal transmission, enhancing electromagnetic interference resistance; Grounding optimization component: Remove the ground wire at the output terminal of the generator carbon brush wear power supply G53.7 to block the high-frequency interference path.

[0006] Preferably, the parameters of the WD231-P overspeed module are set as follows: K101.8FUN=F, latch switch "on", and K161.4FUN=A.

[0007] Preferably, the high-speed and low-speed shaft proximity switches are replaced with Yike 8mm ranging type, with an installation gap of 2.5-3mm.

[0008] Preferably, the ground wire at the output terminal of G53.7 should be removed and properly insulated.

[0009] Preferably, the high-speed shaft cable is replaced with a shielded cable, and the wiring is done according to the corresponding relationship.

[0010] Preferably, it further includes: an intelligent early warning device, the intelligent early warning device comprising: Intelligent monitoring device: The shielded cable is divided into multiple cable segments, and each cable segment is equipped with an intelligent monitoring device. The intelligent monitoring device includes: monitoring module one and monitoring module two. Monitoring module one is used to monitor the environmental information of the cable segment where the shielded cable is located, and monitoring module two is used to monitor the parameters of the shielded cable. The environmental information includes: ambient temperature and ambient wind speed. The parameters of the shielded cable include: shielded cable temperature. Several temperature monitoring points are set in each cable segment. A timer, used to time the total usage time of the current shielded cable; The main control device is communicatively connected to each intelligent monitoring device, and the timer and early warning device are electrically connected to the main control device.

[0011] Preferably, the main control device includes: First acquisition module: used to acquire the current monitoring data of the intelligent monitoring device; Memory: Stores parameters under reference conditions for each type of shielded cable and an environmental wind speed-heat dissipation coefficient model for each type of shielded cable. The parameters under reference conditions include the maximum allowable temperature under reference conditions. First calculation module: used to determine the current maximum allowable temperature of each cable segment of the shielded cable based on the timer value corresponding to the current shielded cable, the environmental information of each cable segment, the environmental wind speed-heat dissipation coefficient model corresponding to the current shielded cable, and the maximum allowable temperature under the reference conditions; The early warning device includes a first early warning module, which is used to issue an early warning when the actual temperature at any temperature monitoring point of any cable segment of the current shielded cable is greater than the corresponding current maximum allowable temperature.

[0012] Preferably, the main control device further includes: The second calculation module is used to determine the temperature difference coefficient of each cable segment based on the temperature status of the adjacent temperature monitoring point group of each cable segment of the current shielded cable. The early warning device also includes a second early warning module, which is used to issue an early warning when the temperature difference coefficient of any segment of the current shielded cable is greater than a preset temperature difference coefficient.

[0013] Preferably, the first calculation module calculates based on the following formula: ; Where Q is the current maximum allowable temperature of the current cable segment of the current shielded cable; This represents the maximum permissible temperature under the current reference conditions for shielded cables. The heat dissipation coefficient of the current shielded cable is determined under the baseline conditions of the environmental wind speed-heat dissipation coefficient model corresponding to the current shielded cable. The heat dissipation coefficient is determined based on the ambient wind speed of the current cable segment and the ambient wind speed-heat dissipation coefficient model corresponding to the current shielded cable. This is the coefficient of influence of the heat dissipation coefficient on the maximum allowable temperature; The ambient temperature of the current cable segment of the current shielded cable; For the rated life of current shielded cables, The timer value corresponding to the current shielded cable; This represents the aging sensitivity coefficient of the current shielded cable; The reference temperature is the reference condition.

[0014] Preferably, the second calculation module calculates based on the following formula: ; T is the temperature difference coefficient of the current cable segment of the current shielded cable; M is the total number of adjacent temperature monitoring point groups of the current cable segment of the current shielded cable. The larger temperature monitoring value in the first point of the k-th group of the current cable segment of the current shielded cable; The first group of adjacent temperature monitoring points for the current cable segment of the current shielded cable is the number of adjacent temperature monitoring points for the current cable segment of the current shielded cable. The first group of adjacent temperature monitoring points for the current cable segment of the current shielded cable is the adjacent temperature monitoring point group with a temperature difference coefficient greater than a first preset value. The smaller temperature monitoring value in the first point group of the k-th group of the current cable segment of the current shielded cable; The temperature difference coefficient of the first point group of the k-th group of the current cable segment of the current shielded cable; This represents the maximum permissible temperature difference between adjacent areas of the current cable. , These are the weights for the proportion of temperature anomalies and the weights for temperature differences, respectively.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This solution addresses the problem of wind turbine speed signal interference by integrating proximity switch upgrades, overspeed module optimization, cable shielding, and grounding modifications across the entire signal acquisition, transmission, and processing chain, achieving stable operation with zero false triggering.

[0016] This solution improves signal reliability and reduces false triggering by replacing the proximity switch with a more stable Yike one, employing the WD231-P overspeed module with enhanced filtering algorithms, and optimizing cable and grounding design. It requires no complex software upgrades, has low retrofit costs, is highly adaptable, and can be quickly applied to the retrofitting of existing units. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0020] This invention provides a wind turbine system optimized based on proximity switches and overspeed modules, such as... Figure 1 As shown, it includes: WD231-P overspeed module: It features an enhanced filtering algorithm, replacing the original WD231 and LE2131D modules, and improving the anti-interference capability of the speed signal; Yike 8mm ranging proximity switch: Replaces the original high and low speed shaft proximity switches, reducing the probability of signal interference and switching. Shielded cable: Used for high-speed shaft proximity switch signal transmission, enhancing electromagnetic interference resistance; Grounding optimization component: Remove the ground wire at the output terminal of the generator carbon brush wear power supply G53.7 to block the high-frequency interference path.

[0021] Preferably, the parameters of the WD231-P overspeed module are set to K101.8FUN=F, the latching switch is "on", and K161.4FUN=A; the high and low speed shaft proximity switches are replaced with Yike 8mm ranging type, with an installation gap of 2.5-3mm.

[0022] Replace the high-speed shaft cable with a shielded cable and connect them according to the corresponding wiring. Remove the ground wire at the output terminal of G53.7 and ensure proper insulation.

[0023] Key technical points: Compatibility matching and parameter optimization settings for proximity switches and overspeed modules. Anti-interference design of shielded cables and interference blocking technology for grounding systems. Signal stability assurance mechanisms when multiple modules work together.

[0024] Protection point: Overspeed module model (WD231-P) and parameter settings (FUN value, latching switch status). Proximity switch model (Yike 8mm ranging), installation gap (2.5-3mm), and cable type (shielded cable). Specific location of grounding modification (G53.7 output ground wire) and operation method.

[0025] The beneficial effects of the above technical solution are as follows: This solution addresses the problem of wind turbine speed signal interference by integrating proximity switch upgrades, overspeed module optimization, cable shielding, and grounding modifications across the entire signal acquisition, transmission, and processing chain, achieving stable operation with zero false triggering.

[0026] This solution improves signal reliability and reduces false triggering by replacing the proximity switch with a more stable Yike one, employing the WD231-P overspeed module with enhanced filtering algorithms, and optimizing cable and grounding design. It requires no complex software upgrades, has low retrofit costs, is highly adaptable, and can be quickly applied to the retrofitting of existing units.

[0027] Example 2, based on Example 1, It also includes: an intelligent early warning device, the intelligent early warning device comprising: Intelligent monitoring device: The shielded cable is divided into multiple cable segments, and each cable segment is equipped with an intelligent monitoring device. The intelligent monitoring device includes: monitoring module one and monitoring module two. Monitoring module one is used to monitor the environmental information of the cable segment where the shielded cable is located, and monitoring module two is used to monitor the parameters of the shielded cable. The environmental information includes: ambient temperature and ambient wind speed. The parameters of the shielded cable include: shielded cable temperature. Several temperature monitoring points are set in each cable segment. A timer, used to time the total usage time of the current shielded cable; The main control device is communicatively connected to each intelligent monitoring device, and the timer and early warning device are electrically connected to the main control device.

[0028] Preferably, the main control device includes: First acquisition module: used to acquire the current monitoring data of the intelligent monitoring device; Memory: Stores parameters under reference conditions (reference ambient temperature, reference operating conditions) for each type of shielded cable, and an ambient wind speed-heat dissipation coefficient model for each type of shielded cable. The parameters under the reference conditions include the maximum allowable temperature under the reference conditions. First calculation module: used to determine the current maximum allowable temperature of each cable segment of the shielded cable based on the timer value corresponding to the current shielded cable, the environmental information of each cable segment, the environmental wind speed-heat dissipation coefficient model corresponding to the current shielded cable, and the maximum allowable temperature under the reference conditions; The early warning device includes a first early warning module, which is used to issue an early warning when the actual temperature at any temperature monitoring point of any cable segment of the current shielded cable is greater than the corresponding current maximum allowable temperature.

[0029] Preferably, the main control device further includes: The second calculation module is used to determine the temperature difference coefficient of each cable segment based on the temperature status of the adjacent temperature monitoring point group of each cable segment of the current shielded cable. The early warning device also includes a second early warning module, which is used to issue an early warning when the temperature difference coefficient of any segment of the current shielded cable is greater than a preset temperature difference coefficient.

[0030] Preferably, the first calculation module calculates based on the following formula: ; Where Q is the current maximum allowable temperature of the current cable segment of the current shielded cable; This represents the maximum permissible temperature under the current reference conditions for shielded cables. The heat dissipation coefficient of the current shielded cable is determined under the baseline conditions of the environmental wind speed-heat dissipation coefficient model corresponding to the current shielded cable. The heat dissipation coefficient is determined based on the ambient wind speed of the current cable segment and the ambient wind speed-heat dissipation coefficient model corresponding to the current shielded cable. This is the coefficient of influence of the heat dissipation coefficient on the maximum allowable temperature (a coefficient calibrated empirically or experimentally, quantifying the degree of influence of changes in the heat dissipation coefficient on the maximum allowable temperature; its magnitude reflects the "sensitivity" of the allowable temperature change caused by the change in the heat dissipation coefficient, for example...). The larger the value, the more significant the effect of the change in heat dissipation coefficient on Q. The ambient temperature of the current cable segment of the current shielded cable; For the rated life of current shielded cables, The timer value corresponding to the current shielded cable; The current aging sensitivity coefficient of the shielded cable (with a value greater than 0 and less than 1, quantifying the relationship between the insulation aging degree of the shielded cable and temperature, and the relative change in the insulation aging rate of the shielded cable for every 1°C change in temperature). The reference temperature is the reference condition.

[0031] Preferably, the second calculation module calculates based on the following formula: ; T is the temperature difference coefficient of the current cable segment of the current shielded cable; M is the total number of adjacent temperature monitoring point groups of the current cable segment of the current shielded cable. The larger temperature monitoring value in the first point of the k-th group of the current cable segment of the current shielded cable; The first group of adjacent temperature monitoring points for the current cable segment of the current shielded cable is the number of adjacent temperature monitoring points for the current cable segment of the current shielded cable. The first group of adjacent temperature monitoring points for the current cable segment of the current shielded cable is the adjacent temperature monitoring point group with a temperature difference coefficient greater than a first preset value. The smaller temperature monitoring value in the first point group of the k-th group of the current cable segment of the current shielded cable; The temperature difference coefficient of the first point group of the k-th group of the current cable segment of the current shielded cable; This represents the maximum permissible temperature difference between adjacent areas of the current cable. , These are the weights for the proportion of temperature anomalies and the weights for temperature differences (values ​​greater than 0 and less than 1, and can be 0.5 and 0.5 respectively).

[0032] The beneficial effects of the above technical solution are as follows: Multi-dimensional parameter fusion modeling breaks through the limitations of the traditional "single temperature threshold". It integrates environmental parameters (temperature, wind speed), aging parameters (usage time, aging coefficient) and heat dissipation characteristics (wind speed-heat dissipation model) to construct a dynamic allowable temperature formula, realizing coupled calculation of "environment-aging-heat dissipation", which is more in line with actual operating conditions.

[0033] The refined assessment of temperature difference coefficient quantifies local thermal anomalies (such as poor contact and insulation degradation) in cable segments by using a temperature difference coefficient model of adjacent temperature monitoring points, thus identifying "gradual temperature change faults" in advance and making up for the shortcomings of single-point temperature monitoring.

[0034] Dynamically adjust the allowable temperature to prevent thermal aging. Based on the usage time and aging coefficient, the baseline allowable temperature is modified so that the temperature threshold is dynamically reduced as the cable ages (e.g., the allowable temperature of a 10-year-old cable is 15% to 20% lower than that of a new cable), thereby reducing the risk of "overheating operation accelerating aging" from the source.

[0035] The first early warning module covering different fault stages (temperature exceeding the allowable value) directly intercepts "manifest over-temperature faults" to avoid insulation breakdown; The second early warning module (temperature difference coefficient exceeding the limit) detects "hidden thermal anomalies" (such as local damage to the shielding layer or oxidation of the connector), enabling pre-fault diagnosis and eliminating potential hazards in their infancy.

[0036] Distributed monitoring and centralized control: Intelligent monitoring devices are deployed in each cable segment to collect environmental and temperature data in real time; the main control device performs centralized calculations and unified early warnings, which not only ensures "precise location of local faults" but also achieves "overall status management", improving operation and maintenance response efficiency by more than 50%.

[0037] Cable remaining life prediction (combined with aging model); digital twin modeling of environmental-heat dissipation characteristics to optimize cable laying schemes (such as adjusting spacing and increasing ventilation). The warning threshold is optimized through self-learning (dynamically adjusted according to seasonal and load changes) to reduce false alarms / missed alarms.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wind turbine system optimized based on proximity switches and overspeed modules, characterized in that, include: WD231-P overspeed module: It features an enhanced filtering algorithm, replacing the original WD231 and LE2131D modules, and improving the anti-interference capability of the speed signal; Yike 8mm ranging proximity switch: Replaces the original high and low speed shaft proximity switches, reducing the probability of signal interference and switching. Shielded cable: Used for high-speed shaft proximity switch signal transmission, enhancing electromagnetic interference resistance; Grounding optimization component: Remove the ground wire at the output terminal of the generator carbon brush wear power supply G53.7 to block the high-frequency interference path.

2. The wind turbine system based on proximity switch and overspeed module optimization according to claim 1, characterized in that, The parameters of the WD231-P overspeed module are set as follows: K101.8FUN=F, latch switch "on", and K161.4FUN=A.

3. The wind turbine system based on proximity switch and overspeed module optimization according to claim 1, characterized in that, The high-speed and low-speed shaft proximity switches were replaced with Yike 8mm ranging type, with an installation gap of 2.5-3mm.

4. The wind turbine system based on proximity switch and overspeed module optimization according to claim 1, characterized in that, Remove the ground wire from the output terminal of G53.7 and ensure proper insulation.

5. The wind turbine system based on proximity switch and overspeed module optimization according to claim 1, characterized in that, Replace the high-speed shaft cable with a shielded cable and connect them according to the corresponding relationship.

6. The wind turbine system based on proximity switch and overspeed module optimization according to claim 1, characterized in that, Also includes: Intelligent early warning device, the intelligent early warning device comprising: Intelligent monitoring device: The shielded cable is divided into multiple cable segments, and each cable segment is equipped with an intelligent monitoring device. The intelligent monitoring device includes: monitoring module one and monitoring module two. Monitoring module one is used to monitor the environmental information of the cable segment where the shielded cable is located, and monitoring module two is used to monitor the parameters of the shielded cable. The environmental information includes: ambient temperature and ambient wind speed. The parameters of the shielded cable include: shielded cable temperature. Several temperature monitoring points are set in each cable segment. A timer, used to time the total usage time of the current shielded cable; The main control device is communicatively connected to each intelligent monitoring device, and the timer and early warning device are electrically connected to the main control device.

7. The wind turbine system based on proximity switch and overspeed module optimization according to claim 6, characterized in that, The main control device includes: First acquisition module: used to acquire the current monitoring data of the intelligent monitoring device; Memory: Stores parameters under reference conditions for each type of shielded cable and an environmental wind speed-heat dissipation coefficient model for each type of shielded cable. The parameters under reference conditions include the maximum allowable temperature under reference conditions. First calculation module: used to determine the current maximum allowable temperature of each cable segment of the shielded cable based on the timer value corresponding to the current shielded cable, the environmental information of each cable segment, the environmental wind speed-heat dissipation coefficient model corresponding to the current shielded cable, and the maximum allowable temperature under the reference conditions; The early warning device includes a first early warning module, which is used to issue an early warning when the actual temperature at any temperature monitoring point of any cable segment of the current shielded cable is greater than the corresponding current maximum allowable temperature.

8. The wind turbine system based on proximity switch and overspeed module optimization according to claim 7, characterized in that, The main control device also includes: The second calculation module is used to determine the temperature difference coefficient of each cable segment based on the temperature status of the adjacent temperature monitoring point group of each cable segment of the current shielded cable. The early warning device also includes a second early warning module, which is used to issue an early warning when the temperature difference coefficient of any segment of the current shielded cable is greater than a preset temperature difference coefficient.

9. The wind turbine system based on proximity switch and overspeed module optimization according to claim 7, characterized in that, The first calculation module is based on the following formula: ； Where Q is the current maximum allowable temperature of the current cable segment of the current shielded cable; This represents the maximum permissible temperature under the current reference conditions for shielded cables; The heat dissipation coefficient of the shielded cable is determined under the baseline conditions of the ambient wind speed-heat dissipation coefficient model corresponding to the current shielded cable. The heat dissipation coefficient is determined based on the ambient wind speed of the current cable segment and the ambient wind speed-heat dissipation coefficient model corresponding to the current shielded cable. This is the coefficient of influence of the heat dissipation coefficient on the maximum allowable temperature; The ambient temperature of the current cable segment of the current shielded cable; For the rated life of current shielded cables, The timer value corresponding to the current shielded cable; This represents the aging sensitivity coefficient of the current shielded cable; The reference temperature is the reference condition.

10. The wind turbine system based on proximity switch and overspeed module optimization according to claim 8, characterized in that, The second calculation module is based on the following formula: ； T is the temperature difference coefficient of the current cable segment of the current shielded cable; M is the total number of adjacent temperature monitoring point groups of the current cable segment of the current shielded cable. The larger temperature monitoring value in the first point of the k-th group of the current cable segment of the current shielded cable; The first group of adjacent temperature monitoring points for the current cable segment of the current shielded cable is the number of adjacent temperature monitoring points for the current cable segment of the current shielded cable. The first group of adjacent temperature monitoring points for the current cable segment of the current shielded cable is the adjacent temperature monitoring point group with a temperature difference coefficient greater than a first preset value. The smaller temperature monitoring value in the first point group of the k-th group of the current cable segment of the current shielded cable; The temperature difference coefficient of the first point group of the k-th group of the current cable segment of the current shielded cable; This represents the maximum permissible temperature difference between adjacent areas of the current cable. , These are the weights for the proportion of temperature anomalies and the weights for temperature differences, respectively.

Images