Abnormal behavior detection and guide safety method for control software of wind generation set

Abstract

The invention discloses an abnormal behavior detection and guide safety method for a control software of a wind generation set for safety detection and treatment when a main control software of the wind generation set is operated. The method comprises the following main points of: 1) firstly, taking a instruction stream executed and output by a main controller of the wind generation set to an abnormal behavior detection and handling system independent of the main controller of the wind generation set, wherein the system detects that the software is abnormal in behavior as the command executed by the main controller of the wind generation set is deviated from a binary source code of the control software; 2) after detecting an abnormal behavior, switching a communication path by the abnormal behavior detection and handling system to achieve takeover of the wind generation set; and 3) after controlling the abnormal behavior detection and handling system taking charge of control of the wind generation set, the main controller of the wind generation set is shut down firstly, and the wind generation set is shut down in a normal shutdown mode. The technical scheme provided by the invention can detect abnormal behaviors of a main controller software of the wind generation set which goes wrong or executes a code out of a plan, and guides the wind generation set to be safe.

Description

technical field [0001] The invention relates to the technical field of wind turbine safety and protection, in particular to the safety detection and processing of wind turbine control software when running. Background technique [0002] With the continuous deepening of wind energy development and utilization, the construction of wind farms in my country has expanded to areas with drastic changes in wind speed and strong lightning at high altitudes and offshore. The drastic changes in wind speed make the wind turbine power generation system radiate electromagnetic waves with greater intensity; strong lightning directly forms strong electromagnetic interference. Although the wind turbine control computer system has been processed in terms of anti-electromagnetic interference, due to the difficulty of eliminating electric field coupling, magnetic field coupling, and common impedance coupling, strong electromagnetic interference will increase the probability of the control compu...

AI Technical Summary

Problems solved by technology

But in fact, on the one hand, for the sake of reliability, PLC control system is generally used for unit control, and its computing resources are limited, so it is difficult to realize a self-safe detection software platform. When the control program is destroyed, the detection program itself may have been destroyed , loses the function; on the other hand, the control software needs to cooperate (such as function signature, plug-in) to realize the detection function, and the existing unit control software needs to be rewritten, and the wind turbine is very demanding on safety. After the control software is changed, it needs to go through Strict testing and verification can only be applied, the cost is very high, and it needs to be avoided as much as possible

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