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Distributed power distribution control method for wind farms considering communication delay and failure

A control method and communication delay technology, applied in the direction of engine control, control algorithm type, wind turbine control, etc., can solve the problem of not considering the impact of communication delay on the system, the poor dynamic performance of distributed control algorithms, and the lack of distribution In order to achieve the effects of suppressing communication delays and communication failures, improving convergence speed, and reducing integral saturation

Active Publication Date: 2019-02-05
ZHEJIANG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

However, there are three obvious shortcomings in the existing distributed control methods: the use of linear integrators to control the total power of distributed power sources has problems such as integral saturation and overshoot; the dynamic performance of distributed control algorithms is poor, and each distributed energy source The convergence speed is slow; the impact of communication delay and communication failure on the system is not considered
[0012] Therefore, there is a lack of an effective distributed power distribution method in the prior art to solve the problems that the existing control methods need to solve urgently

Method used

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  • Distributed power distribution control method for wind farms considering communication delay and failure
  • Distributed power distribution control method for wind farms considering communication delay and failure
  • Distributed power distribution control method for wind farms considering communication delay and failure

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specific Embodiment

[0065] The screenshot of the experiment is as follows:

[0066] In the figure: (a) reference value of utilization rate; (b) actual value of utilization rate of 5 fans; (c) total load power and total power of fans; (d) output power of 5 fans; (e) total load power The difference with the total power of the fan; (f) the set value of the fan speed.

[0067] (1) When the total power of the load changes, but the wind speed and the communication topology between the wind turbines remain unchanged, there is no communication failure and no communication delay, the load is 0.2MW at 0-20s, and 0.3MW at 20-40s. The load is 0.2MW from 40s to 60s, 0.3MW from 60s to 80s, and 0.4MW from 80s to 100s. The simulation results are as follows Figure 5 shown. It can be seen from the experimental results that when the total power of the load changes, the total output power of the fan group can quickly and accurately track the change of the total power of the load, and the utilization rate of each ...

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Abstract

The invention discloses a draught fan group distributed power distribution control method considering communication delay and communication failures. The draught fan group distributed power distribution control method comprises the steps that the total output power of all draught fans and the total power required by all loads are collected in real time, and a high-performance controller is built; a distributed controller is built, the trace output power reference value of all the draught fans is obtained through the real-time output power of each draught fan and the output value of the high-performance controller, and the total power is rapidly and fairly distributed among all the draught fans; and draught fan output operates for the trace output power reference value according to the comparison of the actual wind speed and the rated wind speed through a variable rotational speed control method or a variable pitch control method. According to the draught fan group distributed power distribution control method considering the communication delay and the communication failures, the draught fan group total power is rapidly and fairly distributed among all the draught fans, and the communication delay and the communication failures are restrained.

Description

technical field [0001] The invention relates to a power distribution method, in particular to a fan group distributed power distribution control method considering communication delay and failure. Background technique [0002] As a way to optimize and integrate distributed power sources, microgrid is of great significance for reducing the burden on large power grids, improving power supply reliability, and improving the environment. As a renewable distributed energy source that is clean, environmentally friendly, abundant in reserves, and easy to develop, wind power generation systems have been widely used in microgrids. [3]-[4] . However, the addition of a large number of intermittent and fluctuating wind power systems makes the power balance within the microgrid and the power allocation among wind power systems very complicated. In addition, the increasing scale of the microgrid communication network puts forward higher requirements for the robustness of the control meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCF03D7/00F05B2270/104F05B2270/337F05B2270/703Y02E10/72
Inventor 李超勇刘航齐冬莲张国月
Owner ZHEJIANG UNIV
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