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Management method of standby power source for pitch system

A technology of backup power supply and management method, applied in the field of wind power generation, to avoid adverse effects and achieve the effect of safe and reliable operation

Inactive Publication Date: 2018-08-07
INNER MONGOLIA GEOHO ENERGY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, whether a battery or a super capacitor is used, there will be a certain degree of impact on whether the wind turbine pitch system can continue to operate well due to battery performance problems during use.

Method used

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  • Management method of standby power source for pitch system
  • Management method of standby power source for pitch system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] See figure 1 , figure 1 It is a schematic diagram of a backup power management system for a pitch system according to an embodiment of the present invention. The backup power management system includes a data acquisition module 11, a data processing module 12, a data communication module 13, a remote monitoring module 14, a battery protection module 15, and a charge and discharge control module 16.

[0029] See figure 2 , figure 2 This is a flowchart of a method for managing backup power of a pitch system according to an embodiment of the present invention. Specifically, the management method of the backup power supply of the pitch system includes the following steps:

[0030] 201. The data acquisition module collects the instantaneous battery state parameters of the batteries in the three backup battery packs and sends them to the data processing module.

[0031] The data acquisition module collects, stores and sends the instantaneous battery state parameters of the three ...

Embodiment 2

[0052] See image 3 , image 3 It is a flowchart of another method for managing the backup power supply of a pitch system provided by an embodiment of the present invention. Specifically, the method for managing the backup power supply of the pitch system according to the embodiment of the present invention further includes before step 202:

[0053] 204. The remote monitoring module sends a data request instruction to the data processing module through the data communication module. The data request command includes, for example, a battery remaining service life analysis command, a charging current safety analysis command, a charging current stability analysis command, a charging power analysis command, a discharging power analysis command, a battery temperature analysis command, and a battery temperature difference analysis command.

Embodiment 3

[0055] See Figure 4 , Figure 4 This is a flowchart of yet another method for managing backup power of a pitch system according to an embodiment of the present invention. Specifically, the method for managing the backup power supply of the pitch system in this embodiment of the present invention is different from the first or second embodiment in that it further includes after step 202:

[0056] 205. The battery protection module issues a short-circuit alarm signal and cuts off the charging power supply according to the short-circuit protection instruction sent by the data processing module. For example, the short-circuit alarm signal may adopt any method such as displaying a red light, a yellow light, a whistle, or a voice prompt.

[0057] 206. The data processing module receives the operation result of the battery protection module and sends it to the remote monitoring module through the data communication module.

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Abstract

The invention relates to a management method of a standby power source for a pitch system. The method comprises steps that instantaneous battery state parameters of batteries of three standby batterypacks are respectively acquired by a data acquisition module and are sent to a data processing module; the instantaneous battery state parameters are received by the data processing module, data analysis is further carried out, and the analysis result is sent to a remote monitoring module through a data communication module; the analysis result is received by the remote monitoring module, and theanalysis result is controlled for displaying on a display screen. The method is advantaged in that unified management of the three standby battery packs of the pitch system is carried out, the instantaneous battery state of the batteries is monitored, real-time monitoring of battery electric quantity change is carried out, so the storage capacity of the standby power source is replenished in time,real-time safe monitoring on the batteries is realized through control on the battery temperature and the charging current, and safe and reliable operation of the pitch system is guaranteed.

Description

Technical field [0001] The present invention relates to the technical field of wind power generation, in particular to a management method of a pitch system standby power supply. Background technique [0002] The pitch system of wind turbines uses control technology to change the blade pitch angle to improve wind energy efficiency and track the optimal power curve. After the unit fails, whether the blades can feather or not is related to the safety of the entire unit. The power supply of the pitch system From the power grid, considering that the blade can feather to a safe angle when the power grid fails or falls, it is necessary to add a power supply to the pitch system. [0003] The existing pitch systems of wind turbines all use three independent battery systems to provide backup power for the three blades. When batteries are used as backup power sources, especially lead-acid batteries, their own cycle life, capacity recovery after deep discharge, high and low temperature perfo...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J9/06
CPCH01M10/4257H02J7/0026H02J7/0048H02J7/0077H02J7/0091H02J9/06Y02B70/30Y02E60/10Y04S20/20
Inventor 吴莉
Owner INNER MONGOLIA GEOHO ENERGY EQUIP
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