Wind farm single-ring network multi-point fault rapid positioning method

A technology for wind farms and positioning methods, which is applied to fault locations, fault detection by conductor type, information technology support systems, etc., can solve problems such as inability to quickly locate faults, inaccurate fault location, waste of human and material resources, etc. Procurement and processing of downtime, preventing misjudgment factors of failure points, and improving the effect of positioning accuracy

Active Publication Date: 2016-02-24
DONGFANG ELECTRIC AUTOMATIC CONTROL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method cannot quickly locate multiple faulty nodes, and the next fault point can only be located after one fault point is resolved, which increases the fault processing time; it is also unable to quickly locate the communication attenuation fault point, and the communication packet loss caused by network attenuation It is difficult to quickly locate; it is necessary to rely on the main controller of the wind turbine, which makes the processing method complicated and easily leads to inaccurate location of the fault point
[0005] After the network is disconnected, it is impossible to monitor the status of the wind turbine in time, which is likely to cause safety accidents; at the same time, it is impossible to quickly locate the fault, which also causes a waste of manpower and material resources

Method used

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  • Wind farm single-ring network multi-point fault rapid positioning method
  • Wind farm single-ring network multi-point fault rapid positioning method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Wind power generation ring network communication, generally from the centralized control room: monitoring computer + master station, wind turbine side: wind turbine main controller + sub-station, the communication link is from the monitoring computer through the master station -> Sub-station to the main fan controller and the main fan controller via sub-station -> The main station is composed of the monitoring circuit, the said main station is a remote control room communication station, and the sub-station is a wind turbine communication station.

[0032] A method for quickly locating multiple-point faults in a single-loop network of a wind power plant is completed through the following steps:

[0033] Such as figure 2 As shown, (1) The master station 0 sends a heartbeat message in a fixed cycle (parameters can be set). After the slave station 1 receives the heartbeat message, it adds the status information of the slave station itself to the heartbeat message, records it an...

specific example

[0048] Such as figure 2 , The specific example given: After the network fails or the communication is attenuated, the steps to quickly locate the fault are as follows:

[0049] Step 1: Read the heartbeat message record of the master station 0, and obtain the status of all the slave stations on the network;

[0050] Step 2: According to the read status of the slave station, find the slave station 9, and quickly locate the first network fault point-between the slave station 8 and the slave station 9;

[0051] Step 3: Go to the first slave station 8 in front of the slave station 9 and read the heartbeat message of the slave station 8;

[0052] Step 4: According to the heartbeat message of slave station 8, the heartbeat message of slave station 4~8 can be read. The heartbeat message of slave station 3 is not received, so locate the next failure point-between slave station 3 and slave station 4. between.

[0053] Step 5: Same as step 4, locate the last fault point-between the master stati...

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Abstract

The present invention discloses a wind farm single-ring network multi-point fault and poor contact/communication attenuation rapid positioning method. The method comprises the following steps that: a master station periodically sends heartbeat packets, after a sub-station receives the heartbeat packets, the sub station adds the state information of the sub station into the heartbeat packets and forwards the heartbeat packets to a sub station of a next level until the heartbeat packets of all sub station state information are returned to the master station, if the master station receives the heartbeat packets with all sub station state information, a network is normal, if the master station does not receive the heartbeat packets with all sub station state information, a single-ring network is failed, the last sub station which does not return the heartbeat packets is a first fault point, the heartbeat packet record recorded in the sub station is recorded at the first fault point, a next fault point is rapidly positioned, the steps are repeated to position multiple fault nodes, and according to the data loss packet number information in the heartbeat packets returned by the sub station, the sub station with poor contact/communication attenuation is positioned.

Description

Technical field [0001] The present invention relates to wind power generation technology, and in particular to a method for quickly locating a single ring network of a wind power plant when there are problems such as multiple failures, good and bad, network attenuation or poor contact, etc., which reduces the workload of maintenance personnel and makes it faster Locate and restore the point of failure to ensure the monitoring of ring-net wind turbines. Background technique [0002] With the environmental pollution caused by traditional fossil energy, the proportion of green energy wind power installed capacity in the grid is increasing. An optimized control strategy must be designed according to the characteristics of domestic equipment to increase unit utilization, reduce unit downtime, increase power generation, and reduce traditional energy use. [0003] In the early stage of domestic wind power development, due to many reasons, many wind farms are still using single-ring optic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
CPCG01R31/086Y04S10/52
Inventor 邵勤丰项勤建刘显波王秉旭孟新光曹碧生
Owner DONGFANG ELECTRIC AUTOMATIC CONTROL ENG CO LTD
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