CN110569517B - Alarm optimization design method for master control system of wind turbine generator - Google Patents
Alarm optimization design method for master control system of wind turbine generator Download PDFInfo
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Abstract
The invention discloses an alarm optimization design method for a master control system of a wind turbine generator, which uses a multi-dimensional state code to realize the hierarchical alarm function of the running state of unit equipment, wherein the multi-dimensional state code is divided into an event state code and an accident state code, has the functions of automatic triggering and automatic resetting, performs logic criterion operation according to input parameters and initialization parameters to determine the automatic activation and resetting of the state code, and provides the state code for other function modes of the master control system to use. And when the state code event meeting the set grade condition is activated, automatically capturing the numerical value of the operation parameter in the target time section width before and after the accident by adopting a fault recording method based on rolling update of a sliding window of an annular buffer area, and storing the numerical value as a file for machine set accident recall. The invention fully considers the attribute of the multidimensional state code, realizes the safe operation of the wind generating set under the unattended condition, has stable and reliable method and is easy to realize and deploy.
Description
Technical Field
The invention belongs to the technical field of control of wind turbine generators, and particularly relates to an alarm optimization design method for a main control system of a wind turbine generator.
Background
Wind power generation is a main form for utilizing clean renewable energy such as wind energy, and a permanent magnet direct drive type fan is a main installation form of a large-capacity wind turbine generator. At present, relevant research is carried out on the design and development of a permanent magnet direct drive type fan master control system at home and abroad, but some problems still exist. For example, in the alarm function, the grade division standard of the target item of each event under the state code is not clear, and the state code alarm function integrated processing method comprehensively considering the events and the accidents is less; the accident snapshot and the fault recording method when the wind turbine generator fails are designed, important relevant parameter information is captured to the maximum degree and program execution efficiency is improved rarely and simultaneously, accident analysis to the wind turbine generator after an accident occurs is not very facilitated, and therefore the design optimization for the realization of the alarm function of the wind turbine generator in the master control system is of great practical significance.
Disclosure of Invention
Aiming at the problems, the invention provides an alarm optimization design method for a main control system of a wind turbine generator, which aims to realize graded alarm when an accident occurs in the unattended condition of the wind turbine generator, provide alarm information for other functional modules of the wind turbine generator, record the fault of important information before and after the accident occurs in the wind turbine generator, recall the accident and use, and finally ensure the safe and stable operation of the wind turbine generator.
In order to achieve the technical purpose and achieve the technical effects, the invention is realized by the following technical scheme:
an alarm optimization design method for a master control system of a wind turbine generator comprises the following steps:
initializing the trigger condition and attribute of the state code;
and acquiring input quantity, comparing the input quantity and the change of the input quantity with the triggering condition and attribute of the state code, performing alarm triggering according to the comparison result, and automatically capturing the numerical value of the operation parameter in the target time section width before and after the alarm triggering to complete the alarm optimization of the master control system of the wind turbine generator.
Preferably, the comparing the input quantity and the change of the input quantity with the triggering condition and the attribute of the status code, and performing alarm triggering according to the comparing result specifically comprises:
and when the change of the input quantity meets the set requirement in the attribute of the state code, activating the state code to trigger alarm.
Preferably, the status code comprises an accident status code and an event status code;
the trigger condition of the accident state code is as follows: the input quantity is analog quantity or switching value; the attributes of the incident status code include: event sequence number, start level, stop level, reset level, yaw level, trigger input state word, shielding sequence number word, upper and lower limits and time delay of a trigger interval, and upper and lower limits and time delay of a reset interval;
the trigger condition of the event state code is as follows: the input quantity is a switching value; the attributes of the event status code include: event sequence number, start-up level, shutdown level, reset level, and yaw level.
Preferably, when the change of the input amount meets the set requirement in the attribute of the status code, the status code is activated to perform alarm triggering, specifically:
when the input quantity falls in the trigger interval and the state code is not shielded by other events, after the set delay, the state code event is activated to alarm;
and when the input quantity falls in the reset interval, resetting the state code event and not giving an alarm.
Preferably, the alarm optimization design method for the wind turbine main control system further includes:
and after the activation of the state code event is completed, assigning the start, stop, reset and yaw levels in the attribute of the state code, updating the start, stop, reset and yaw levels of the global accident, and providing data for the logic operation of the start, stop, reset and yaw functions.
Preferably, the starting, stopping, resetting and yawing grades are set to different grade parameters;
when the shutdown grade is greater than a set value, executing a shutdown process in the running state of the wind turbine generator, wherein the higher the shutdown grade is, the higher the corresponding feathering rate is;
when a related event of the shutdown of the wind turbine generator is triggered, if the shutdown grade corresponding to the event is less than the global shutdown grade, executing the process according to the global shutdown grade;
the higher the reset level, the higher the priority of resetting representing the event;
when a yaw related event occurs, if the yaw level under the event is smaller than the global yaw level, the yaw action corresponding to the event on wind is not executed;
when the wind turbine generator runs in a standby state machine, the wind turbine generator jumps in the state machine and enters a starting mode when the requirements of a set value of a shutdown level and a set value of a yaw level are met and the global starting level meets a set criterion relation.
Preferably, the automatically capturing the numerical value of the operation parameter within the target time section width before and after the alarm is triggered specifically comprises:
a fault recording method based on rolling updating of a sliding window of an annular buffer area is adopted to automatically capture numerical values of operation parameters in the target time section width before and after alarm triggering, and the numerical values are stored as files for accident recall of a wind turbine generator system.
Preferably, the method for recording the fault based on rolling update of the sliding window of the annular buffer area is used for automatically capturing the numerical value of the operation parameter in the target time section width before and after alarm triggering, storing the numerical value as a file, and being used for accident recall of a wind turbine generator set, and specifically comprises the following sub-steps:
(201) determining measuring point information of parameters to be recorded, a task period, a data recording time length Ta before an accident and a data recording time length Tb after the accident, the number Ca of time sections before the accident and the number Cb of sections after the accident; initializing a ring-shaped sliding window group with the length of (Ca + Cb), wherein the addresses of all sub-windows are 0, 1, … and (Ca + Cb-1) in sequence;
(202) writing data in the current time section into a 0 th window;
(203) judging whether a state code shutdown event is triggered, and if so, turning to step 204; if not, go to step 206;
(204) when a shutdown accident of which the shutdown attribute of the state code is greater than a set value occurs, sequentially writing Ca time section data within Ta time after the accident occurs into an annular sliding window by taking a window address corresponding to the current time as a starting point according to a clockwise sequence, reordering IDs of data records in the sliding window according to record establishing time, wherein the ID of the accident occurrence time is defined as 0, the former IDs are sequentially-Ca, - (Ca-1), …, -1 according to the occurrence sequence, and the time after the accident occurs is sequentially 1, 2, …, (Cb-1);
(205) writing the cached data in the windows with the set number into a text file according to the time tag sequence;
(206) after the address of the current sliding window is incremented by 1, step 207 is entered;
(207) if all (Ca + Cb) sub-windows are full of data, go to step 208;
(208) waiting for the next calculation period to come, otherwise, entering step 209;
(209) and overlaying the data in the new section to the window of the existing data according to the sequence of the clockwise window addresses from low to high, and repeating the steps.
Compared with the prior art, the invention has the beneficial effects that:
the alarm optimization design method for the master control system of the wind turbine generator fully considers the multi-dimensional state code attribute, realizes the safe operation of the wind turbine generator under the unattended condition, is stable and reliable, and is easy to realize and deploy.
Furthermore, the invention reasonably distributes multidimensional state code startup, shutdown, reset and yaw grade attributes, integrally processes accident and event state codes, realizes automatic activation and automatic reset functions, and timely alarms according to the self information of the wind turbine generator and the external environment, thereby ensuring the safe operation of the wind turbine generator.
Furthermore, after an accident occurs, important relevant parameter information is captured to the maximum extent and program execution efficiency is improved, fault recording is achieved, and the method has the advantages of being easy to operate and capable of being implemented.
Drawings
FIG. 1 is a flow chart of a status code logic determination method according to an embodiment of the present invention;
fig. 2 is a flowchart of a system fault recording processing method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
The application of the principles of the present invention will now be described in detail with reference to the accompanying drawings.
The invention provides an alarm optimization design method for a master control system of a wind turbine generator, which specifically comprises the following steps:
initializing a trigger condition and an attribute of a state code;
in one embodiment of the present invention, the status code includes an incident status code and an event status code;
the trigger condition of the accident state code is as follows: the input quantity is analog quantity or switching value; the attributes of the incident status code include: event sequence number, start level, stop level, reset level, yaw level, trigger input state word, shielding sequence number word, upper and lower limits and time delay of a trigger interval, and upper and lower limits and time delay of a reset interval;
the trigger condition of the event state code is as follows: the input quantity is a switching value; the attributes of the event status code include: event sequence number, start level, stop level, reset level and yaw level;
and (2) acquiring input quantity, comparing the input quantity and the change of the input quantity with the triggering condition and attribute of the state code, triggering alarm according to the comparison result, and automatically capturing the numerical value of the operation parameter in the target time section width before and after triggering the alarm to complete the alarm optimization of the master control system of the wind turbine generator.
In a specific embodiment of the present invention, the comparing the input quantity and the change of the input quantity with the triggering condition and the attribute of the status code, and performing alarm triggering according to the comparison result means that when the change of the input quantity meets the setting requirement in the attribute of the status code, alarm triggering is performed, specifically:
and when the input quantity is in a trigger interval and the state code is not shielded by other events, activating the state code event after a period of time delay, and triggering an alarm event.
When the input quantity falls in the reset interval, resetting the state code event, and not triggering the alarm;
further, in a specific embodiment of the present invention, the alarm optimization design method for a wind turbine main control system further includes:
when the activation of the state code event is completed, the starting, stopping, resetting and yawing levels in the attributes of the state code are assigned, and the starting, stopping, resetting and yawing levels of the global accident are updated at the same time, so that data are provided for the logical operation of the starting, stopping, resetting and yawing functions; the starting, stopping, resetting and yawing levels in the attributes of the state codes are assigned, and the starting, stopping, resetting and yawing levels of the global accident are updated at the same time, specifically:
traversing all alarm trigger events corresponding to the accident state codes in real time, and taking the maximum shutdown level under all the actuated alarm trigger events as a global accident shutdown level; similarly, obtaining a global accident starting level, a global accident resetting level and a global accident yawing level;
obtaining a global event shutdown level, a global event starting level, a global event resetting level and a global event yawing level by adopting the same method; and similarly, obtaining a global startup level, a global reset level and a global yaw level by taking the maximum one of the global accident shutdown level and the global event shutdown level as the global shutdown level.
The starting, stopping, resetting and yawing grades are set as different grade parameters;
when the shutdown level is a set value, the shutdown process is not executed;
when the shutdown grade is greater than a set value, the shutdown process is executed in the running state of the wind turbine generator, and the higher the shutdown grade is, the more serious the shutdown event is, the higher the corresponding feathering rate is;
when a related event of the shutdown of the wind turbine generator is triggered, if the shutdown grade corresponding to the event is smaller than the global shutdown grade, executing the process according to the global shutdown grade, wherein the higher the reset grade is, the higher the priority of the event is;
when the yaw related event acts, if the yaw level under the event is smaller than the global yaw level, the yaw corresponding to the event is not executed to act on wind, the starting level is used in a standby mode under a state machine, when the unit runs under the standby state machine, after the requirements of the shutdown level and the yaw level set value are met, the global event starting level and the global accident starting level meet the set criterion relation, the wind turbine generator carries out state machine jumping, and enters the starting mode.
In a specific embodiment of the present invention, the automatically capturing a numerical value of an operation parameter within a target time section width before and after alarm triggering specifically includes:
a fault recording method based on rolling updating of a sliding window of an annular buffer area is adopted to automatically capture numerical values of operation parameters in the target time section width before and after alarm triggering, and the numerical values are stored as files for accident recall of a wind turbine generator system.
Example 1
After the initialization parameter information of the state code is determined, alarm judgment is carried out on the state code according to the steps shown in figure 1. As shown in step 101, step 102 is performed after the scanning cycle time arrives, and it is determined whether the event number is within the set interval, if yes, step 103 is performed, otherwise, step 114 is performed, after the event number ID is considered to be out of limit, step 116 is performed;
a step 103 of carrying out, wherein the step 104 is carried out after the state code is initialized (namely the predefined information of the state code is loaded), if the state code is enabled and the shielding state is disabled, the step 107 is carried out, otherwise, the step 105 is carried out;
carrying out step 105, after the state code is judged to be in the activated state but the shielding state is also activated, entering step 106 to reset the state code, otherwise, entering step 116;
a carrying step 107, after the input parameter is judged to be within the triggering interval and the judgment is allowed, entering step 117, activating the status code after time delay, and turning to step 116, otherwise, entering step 108;
a step 108 of carrying out, if the input parameter is not in the trigger interval but in the reset interval and the state code is in the reset state, entering a step 112, keeping the reset state, and then entering a step 116, otherwise entering a step 109;
a step 109 of carrying out, if the input quantity is not in the trigger interval but in the reset interval and the state code is activated, returning to the state code after delaying in step 110 and entering step 116, otherwise entering step 113 and entering step 116 after finishing judgment;
and a step 116 of supporting, finally, judging whether the state code is in an activated state, if so, entering a step 117 of updating the global startup, shutdown, reset and yaw level to provide data for the functional logic operation of the main control system, and otherwise, entering a step 118 of waiting for the next scanning.
After the state code event is alarmed, fault recording is carried out on target important events in the state code event, data in a given time interval plane before and after the accident happens are captured, and the data are stored in a text file after being sorted according to the happening time for accident recall and advanced decision making. The fault recording process is performed according to the method shown in fig. 2.
Firstly, initializing configuration parameters according to step 201, determining the station information para _1 of the parameters to be recorded,
para _2, … and para _ n, wherein the task period is determined to be Ts, the time length Ta of data recorded before an accident and the time length Tb of data recorded after the accident, the number of sections Ca of time before the accident and the number of sections Cb after the accident are determined, a circular sliding window group with the length of (Ca + Cb) is initialized, and the addresses of all sub-windows are 0, 1, … and (Ca + Cb-1) in sequence; then step 202 is entered, data in the current time section is written into the 0 th window, then step 203 is entered to judge whether the state code shutdown event is triggered, and step 204 is entered if the state code shutdown event is triggered. If not, step 206 is entered, after the address of the current sliding window is incremented by 1, step 207 is entered, after all (Ca + Cb) sub-windows are full of data, step 208 is entered to wait for the next calculation period to come, otherwise step 209 is entered, the data in the new section are overlaid on the window of the existing data according to the clockwise window address sequence from low to high, and the process is repeated. And a carrying step 204, after the shutdown accident with the shutdown attribute larger than the set value in the designed state code occurs, sequentially writing Ca time section data in Ta time after the accident into an annular sliding window by taking a window address corresponding to the current time as a starting point according to a clockwise sequence, reordering IDs of data records in the sliding window according to the record establishing time, wherein the ID of the accident occurrence time is defined as 0, the former IDs are-Ca, - (Ca-1), …, -1 according to the occurrence sequence, and the time after the accident is 1, 2, …, (Cb-1) sequentially. Then, step 205 is entered to write the cached data in the window with the set number into the text file according to the time tag sequence. The titles of the parameters within the file are as follows: ID, timestamp, para _1, para _2, …, para _ n.
Optionally, in this embodiment, the total number para _ n of the ring buffer windows is determined to be 3000, the duty cycle Ts is determined to be 20ms, the data cross-section width Ta before the accident occurs is determined to be 30s, and the number of cross-section pieces Ca is determined to be 1500; the data section width Tb after the accident is 30s, and the data section number Cb is 1500.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. An alarm optimization design method for a master control system of a wind turbine generator is characterized by comprising the following steps:
initializing the trigger condition and attribute of the state code;
acquiring input quantity, comparing the input quantity and the change of the input quantity with the triggering condition and attribute of the state code, performing alarm triggering according to the comparison result, and automatically capturing the numerical value of the operation parameter in the target time section width before and after the alarm triggering to complete the alarm optimization of the master control system of the wind turbine generator;
the method for triggering the alarm by comparing the input quantity and the change of the input quantity with the triggering condition and the attribute of the state code and according to the comparison result specifically comprises the following steps:
when the change of the input quantity meets the set requirement in the attribute of the state code, activating the state code and carrying out alarm triggering;
the state code comprises an accident state code and an event state code;
the trigger condition of the accident state code is as follows: the input quantity is analog quantity or switching value; the attributes of the incident status code include: event sequence number, start level, stop level, reset level, yaw level, trigger input state word, shielding sequence number word, upper and lower limits and time delay of a trigger interval, and upper and lower limits and time delay of a reset interval;
the trigger condition of the event state code is as follows: the input quantity is a switching value; the attributes of the event status code include: event sequence number, start level, stop level, reset level and yaw level;
the automatic capturing alarm triggering and target time section width internal operation parameter value specifically comprises the following steps:
a fault recording method based on rolling updating of a sliding window of an annular buffer area is adopted to automatically capture the numerical value of an operation parameter in the target time section width before and after alarm triggering, and the numerical value is stored as a file for accident recall of a wind turbine generator;
the method for recording the fault wave based on rolling updating of the sliding window of the annular buffer area is used for automatically capturing the numerical value of the operation parameter in the target time section width before and after alarm triggering, storing the numerical value as a file and being used for accident recall of the wind turbine generator system, and specifically comprises the following substeps:
(201) determining measuring point information of parameters to be recorded, a task period, a data recording time length Ta before an accident and a data recording time length Tb after the accident, the number Ca of time sections before the accident and the number Cb of sections after the accident; initializing a ring-shaped sliding window group with the length of (Ca + Cb), wherein the addresses of all sub-windows are 0, 1 and … in sequence and (Ca + Cb-1);
(202) writing data in the current time section into a 0 th window;
(203) judging whether a state code shutdown event is triggered, and if so, turning to step 204; if not, go to step 206; (204) when a shutdown accident of which the shutdown attribute of the state code is greater than a set value occurs, sequentially writing Ca time section data within Ta time after the accident occurs into an annular sliding window by taking a window address corresponding to the current time as a starting point according to a clockwise sequence, reordering IDs of data records in the sliding window according to record establishing time, wherein the ID of the accident occurrence time is defined as 0, the former IDs are sequentially-Ca, - (Ca-1), …, -1 according to the occurrence sequence, and the time after the accident occurs is sequentially 1, 2, …, (Cb-1);
(205) writing the cached data in the windows with the set number into a text file according to the time tag sequence;
(206) after the address of the current sliding window is incremented by 1, step 207 is entered;
(207) if all (Ca + Cb) sub-windows are full of data, go to step 208;
(208) waiting for the next calculation period to come, otherwise, entering step 209;
(209) and overlaying the data in the new section to the window of the existing data according to the sequence of the clockwise window addresses from low to high, and repeating the steps.
2. The alarm optimization design method for the wind turbine main control system according to claim 1, characterized in that: when the change of the input quantity meets the set requirement in the attribute of the state code, the state code is activated to trigger the alarm, and the method specifically comprises the following steps:
when the input quantity falls in the trigger interval and the state code is not shielded by other events, after the set delay, the state code event is activated to alarm;
and when the input quantity falls in the reset interval, resetting the state code event and not giving an alarm.
3. The alarm optimization design method for the wind turbine main control system according to claim 1, wherein the alarm optimization design method for the wind turbine main control system further comprises:
and when the activation of the state code event is completed, assigning the startup, shutdown, reset and yaw levels in the attributes of the state code, and updating the startup, shutdown, reset and yaw levels of the global accident at the same time to provide data for the startup, shutdown, reset and yaw function logical operation.
4. The alarm optimization design method for the wind turbine generator main control system according to claim 3, characterized in that: the starting, stopping, resetting and yawing grades are set as different grade parameters;
when the shutdown grade is greater than a set value, executing a shutdown process in the running state of the wind turbine generator, wherein the higher the shutdown grade is, the higher the corresponding feathering rate is;
when a related event of the shutdown of the wind turbine generator is triggered, if the shutdown grade corresponding to the event is less than the global shutdown grade, executing the process according to the global shutdown grade;
the higher the reset level, the higher the priority of resetting representing the event;
when a yaw related event occurs, if the yaw level under the event is smaller than the global yaw level, the yaw action corresponding to the event on wind is not executed;
when the wind turbine generator runs in a standby state machine, the wind turbine generator jumps from the state machine and enters a starting mode when the requirements of the set values of the shutdown level and the yaw level are met and the global starting level meets the set criterion relation.
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| CN103512651A (en) * | 2012-06-26 | 2014-01-15 | 华锐风电科技(集团)股份有限公司 | Vibration abrupt change alarm based wind turbine state monitoring method and apparatus |
| CN109002031A (en) * | 2018-06-26 | 2018-12-14 | 卡斯柯信号有限公司 | A method of applied to monitoring device fault diagnosis and intelligent early-warning |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103512651A (en) * | 2012-06-26 | 2014-01-15 | 华锐风电科技(集团)股份有限公司 | Vibration abrupt change alarm based wind turbine state monitoring method and apparatus |
| CN109002031A (en) * | 2018-06-26 | 2018-12-14 | 卡斯柯信号有限公司 | A method of applied to monitoring device fault diagnosis and intelligent early-warning |
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