CN113110203B - Motor operation centralized control method and system - Google Patents
Motor operation centralized control method and system Download PDFInfo
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- CN113110203B CN113110203B CN202110461411.0A CN202110461411A CN113110203B CN 113110203 B CN113110203 B CN 113110203B CN 202110461411 A CN202110461411 A CN 202110461411A CN 113110203 B CN113110203 B CN 113110203B
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention discloses a motor operation centralized control method and a system, which relate to the technical field of motor operation control, wherein the method part comprises the steps of according to the authority levels, risk levels and safety levels of a unit, a control station and components; and (4) processing the faults of the unit. The system part comprises a centralized control center, a detection unit, a fault judgment unit, a fault processing method storage unit and a fault processing unit. Aiming at the technical problem that the normal operation of the unit is influenced by the faults generated during the operation of the unit, the faults generated during the operation of the unit can be processed according to the preset priority, so that the faults are solved in time, and the normal operation of the unit is ensured.
Description
Technical Field
The invention relates to the technical field of motor operation control, in particular to a motor operation centralized control method and system.
Background
With the development of the electric automation technology, the intelligent control of the motor operation is widely applied to the fields of factory automation, high-risk operation and industrial intelligence. The intelligence, safety and reliability of the intelligent control system for motor operation enable the intelligent control system to be applied more and more widely in the fields of large engineering, large systems, intellectualization and high risk. With the vigorous promotion of European industry 4.0 and Chinese manufacturing 2025, intelligent control requirements of intelligent factories on motor operation are higher and higher, and intelligent control requirements on motor operation are higher in high-risk fields such as military nuclear power, petrochemical industry and the like.
At present, in the field of industrial automation, a small and medium-sized unit operation system is simple in structure, a complex auxiliary matching system is not needed, and a unit transmission system can achieve good manual control and automatic control. However, for a large project and a large system with relatively complicated system integration, many auxiliary systems are provided, and an independent control unit is provided. The operation unit of the large project and the large system has the disadvantages of excessively complex operation platform, poor system operation coordination, more misoperation or other unsafe factors and serious influence on the safe and stable operation of the unit system.
Once the running unit and the auxiliary matching system thereof break down, the safety level and the risk level of the fault cannot be judged in time, and the fault which is not required to be removed by shutdown is likely to cause artificial shutdown or even sudden shutdown; the system needs to be stopped in time, even the system is stopped suddenly, so that the system is delayed, and immeasurable damage and loss are caused. The generated faults need to be stopped for maintenance, even the faults are difficult to locate, the faults cannot be timely eliminated, and the normal operation of the unit is recovered.
Chinese patent application, publication number: CN 102644545A; the publication date is as follows: 2012-08-22; the utility model discloses a wind turbine generator system fault processing method and system, wherein the wind turbine generator system fault processing method comprises the following steps: detecting fault positions corresponding to parts of the wind turbine generator; acquiring a fault control word corresponding to a fault bit; and if the non-stop fault of the part is determined according to the fault control word, carrying out fault reset processing on the part. Wind turbine generator system of failure processing includes: the detection module is connected with the processing module and used for detecting fault positions corresponding to parts of the wind turbine generator; and the processing module is used for acquiring the fault control word corresponding to the fault bit and resetting the fault of the part if the part is determined to have non-stop fault according to the fault control word. The fault priority is used to determine whether a non-shutdown fault or a shutdown fault has occurred for a component. Setting fault priorities in the fault control words, wherein different faults correspond to different fault priorities, and if the fault priorities are divided according to the emergency degree of the faults, the fault priorities are as follows: an immediate shutdown fault, a delayed shutdown fault, and a non-shutdown fault. When a fault of a certain part in the wind turbine generator set with a higher priority level occurs, the wind turbine generator set can be immediately stopped, and when the fault of a lower priority level occurs, the wind turbine generator set can be stopped in a delayed mode or not stopped to wait for reset processing, so that the equipment can continue to operate, and unnecessary stop is avoided. The fault detection delay time is set in the fault control word, whether the part has a fault or not is determined according to the fault detection delay time, and fault false alarm can be avoided, so that the accuracy of fault reporting is improved; the fault priority is set in the fault control word, and when the non-stop fault of the part is determined according to the fault priority, the part is subjected to fault resetting processing, so that unnecessary stop can be avoided. In the scheme, the setting of the fault priority is divided according to the emergency degree of the fault, the judgment standard of whether the part has the fault is determined according to the fault detection delay time, the detection judgment principle is too single, the method is used for controlling the part of a single wind turbine generator, and the coping strategies of fault positioning and rapid processing are not involved.
Disclosure of Invention
Technical problems to be solved by the invention
The invention provides a motor operation centralized control method and a motor operation centralized control system, aiming at the technical problem that the normal operation of a unit is influenced by the fault generated when the unit operates, and the motor operation centralized control method and the motor operation centralized control system can process the fault generated when the unit operates according to the preset priority, solve the fault in time and ensure the normal operation of the unit.
Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
a motor operation centralized control method comprises the following steps: according to the authority levels, risk levels and safety levels of the units, the control stations and the components; and (4) processing the faults of the unit.
Optionally, when the number of the units is more than 2, a centralized control center for controlling more than 2 units is further included, and the centralized control method includes: according to the authority levels, risk levels and safety levels of the centralized control center, the unit, the control station and the components; and (5) processing the faults of the unit.
Optionally, the processing the fault of the unit includes: and calling a pre-stored and set processing method corresponding to the fault to process the fault of the unit.
Optionally, the method further comprises the step of performing fault early warning and fault preprocessing according to parameter signal ranges and fault frequency levels before and after the faults occur in the conventional unit, the control station and the components.
Optionally, when parameter signals of the unit, the control station and the component are within a parameter signal range before and after the unit, the control station and the component go wrong all the time or reach a corresponding fault frequency level, fault early warning is carried out, and fault preprocessing is triggered.
Optionally, the fault processing method includes: and switching the unit, the control station or the component with the fault to the unit, the control station or the component with the corresponding backup redundancy.
Optionally, according to the fault information and fault location information feedback of the unit, the control station or the component, a processing method corresponding to the fault, which is stored and set in advance, is called to process the fault of the unit.
Optionally, the fault determination method includes: and detecting and processing the parameter signals of the unit, the control station and the component, comparing the parameter signals with a set normal parameter signal range, and if the parameter signals are not in the normal parameter signal range, judging that the fault occurs.
A motor operation centralized control system, a motor operation centralized control method according to any one of the above, comprising: the centralized control center is used for detecting parameter signals of the unit, the control station and the component; the fault judging unit is used for comparing the parameter signals of the unit, the control station and the component detected by the detecting unit with the set normal parameter signal range and judging whether the unit, the control station and the component have faults or not; the fault processing method storage unit is used for storing fault processing methods formed when the unit, the control station and the component have faults according to the authority levels, the risk levels and the safety levels of the unit, the control station and the component, and the fault processing method storage unit is called by the centralized control center when the unit, the control station and the component have the faults; and the fault processing unit is used for calling the fault processing method stored in the fault processing method storage unit by the centralized control center when the unit, the control station and the components have faults, controlling the fault processing unit and eliminating the faults according to the fault processing method.
Optionally, the method further includes: the fault early warning big data unit is used for storing parameter signal information and fault frequency of the unit, the control station and the part before and after the fault occurs in the past time; the fault early warning and judging unit is used for comparing the parameter signals of the unit, the control station and the component detected by the detecting unit with parameter signal information of the unit, the control station and the component before and after the fault occurs all the time, and judging whether the fault is about to occur or not, or judging whether the unit, the control station and the component reach corresponding fault frequency to judge whether the fault is about to occur or not; the system also comprises a fault early warning unit, a fault early warning unit and a fault positioning unit, wherein the fault early warning unit is used for sending parameter signal information and fault positioning information of the units, control stations and components to be in fault to the centralized control center if the units, the control stations and the components are to be in fault; the fault pre-processing method storage unit is used for storing fault pre-processing methods formed when the unit, the control station and the component are about to fail according to the authority level, the risk level and the safety level of the unit, the control station and the component; and the fault preprocessing unit is used for calling a fault preprocessing method by the centralized control center after the centralized control center receives the parameter signal information and the fault positioning information of the unit, the control station and the component to be subjected to the fault, controlling the fault preprocessing unit and eliminating the to-be-subjected fault according to the fault preprocessing method.
Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) according to the motor operation centralized control method and system provided by the embodiment of the application, faults are processed according to authority, risk and safety level, for example, the motor drive control system, the matched excitation system, the power distribution system, the lubricating oil system, the high-pressure oil top system, the cooling water circulation system and each independent control station and the centralized control master station of the motor operation monitoring system control priority according to the authority level, so that the whole system is operated highly intelligently, automatically and unmanned.
(2) According to the motor operation centralized control method and system provided by the embodiment of the application, key and important parts of the whole motor operation system are accessed into the safety chain of the whole centralized control system according to the corresponding safety level and risk level, and the corresponding safety protection mechanism is automatically triggered according to the safety control strategy, so that early warning and online operation and maintenance can be realized, and the safety, stability and reliability of the operation of the whole system are provided.
(3) According to the motor operation centralized control method and system provided by the embodiment of the application, the key and important parts of the whole motor operation system and parts with high risk level are subjected to early warning, maintenance and replacement in time by utilizing strong database information of the centralized control center, so that the safe and reliable operation of the whole motor operation system is ensured.
(4) The motor operation centralized control method and system provided by the embodiment of the application not only realize the intelligent control of a single high-power unit, but also realize the cluster control of a plurality of high-power units, and realize highly intelligent, automatic and unmanned operation in the industrial field.
Drawings
Fig. 1 is a flowchart of a centralized control method for motor operation according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a motor operation centralized control system according to an embodiment of the present invention.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, have no specific limiting function, are all general terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. Multiple technical solutions in the same embodiment and multiple technical solutions in different embodiments may be arranged and combined to form a new technical solution without contradictions or conflicts, which are all within the scope of the present invention as claimed.
Example 1
A motor operation centralized control method comprises the following steps: according to the authority levels, risk levels and safety levels of the units, the control stations and the components; and (5) processing the faults of the unit.
For large projects and large systems with complex system integration, a plurality of auxiliary systems are provided, and a plurality of independent control stations are provided, wherein each control station comprises a plurality of components, and the complex control systems have higher requirements on operation safety, reliability and stability; in addition, the operation errors or other unsafe factors are more, and the difficulty of realizing the operation safety, reliability and stability of a large system consisting of a plurality of motors is further increased.
The multiple units and the same unit comprise multiple control stations which may be independent or linked, the same control station comprises multiple components which may be independent or linked.
According to the risk level, the safety level or the fault frequency level, combining with respective authority levels, and according to the past or past fault processing experience, setting the priority in advance, and when a fault occurs, processing in time according to the priority to ensure the normal operation of the unit, and avoid the situation that the fault cannot be removed in time or the unit is stopped due to the fault. The safe and reliable operation of the unit operation system is ensured. Wherein the unit comprises more than one control station, and each control station consists of a plurality of components.
The unit mainly refers to a high-power motor unit or a generator set, and can be independently operated by a single unit or controlled by a plurality of unit clusters.
The control station refers to a control system corresponding to a drive control system, an excitation system, a power distribution system, a lubricating oil and high-pressure oil top system, a cooling water circulation system, a motor operation monitoring system, a video monitoring system, a centralized control center and the like.
The components correspond to the parts that make up the control station. As for the drive control system, corresponds to the motor unit or the generator unit; the motor unit adopts a high-low voltage variable frequency driving device to regulate and control the output torque, the rotating speed and the like of the motor unit; the generator set adopts a variable flow control device to regulate and control the grid-connected operation and the off-line of the output electric energy of the generator set. The components here refer to the components of the high-low voltage variable frequency driving device and the components of the variable current control device.
The excitation system is applied to a high-power synchronous motor set or a synchronous generator set, and is used for adjusting and controlling the stability, reliability and safety of the operation of the set and the power distribution of the operation of the parallel generator set. The parts refer to parts and components forming an excitation system.
For the described power distribution system, there are included high voltage and low voltage power distribution units, as well as redundant power supply systems for high safety levels, high risk, critical devices or components. The components are parts which form parts including a high-voltage power distribution unit and a low-voltage power distribution unit.
The lubricating oil and high-pressure oil top system mainly comprises a thin oil station and a matched system, wherein a low-pressure oil pump loop forms a bearing lubricating system to lubricate a transmission part and supply oil to a high-pressure oil pump; and a high-pressure oil pump loop forms a high-pressure oil jacking system to form a static-pressure oil film between the transmission parts and jack up the transmission shaft of the motor unit. The low-pressure oil pump loop and the high-pressure oil pump loop guarantee normal operation, starting and stopping of the motor unit. When a fault alarm occurs, the standby high-low pressure oil pumps are controlled to be switched quickly to work by the aid of the local independent control stations.
The cooling water circulation system mainly comprises a cooling water tower or an industrial water chiller, a pump set, a flow regulating system and the like, wherein the cooling water tower or the industrial water chiller is designed according to the cooling circulating water flow demand of the motor unit and the environmental field requirement; the number of the pump sets is designed to at least adopt one for one and one for standby according to the flow demand of cooling circulating water of the motor unit; the flow regulating system automatically regulates the working mode of the water pump set, the flow valve of the water pump set and the inlet/outlet cooling water valve of the motor set according to the temperature of the winding, the iron core and the like of the motor set, the temperature difference of the inlet/outlet cooling water valve and other parameters fed back by the motor operation monitoring system, so that the energy conservation and the environmental protection are realized as far as possible on the premise of ensuring the safety of the temperature rise of the motor, and the intelligent control of the cooling circulating water flow is realized.
The motor unit operation monitoring system mainly comprises a vibration monitoring system, a temperature monitoring device, a torque/rotating speed monitoring device and the like, and is used for monitoring vibration, temperature, rotating speed and torque information of the motor unit during operation. The vibration monitoring system comprises vibration sensors arranged at the front and rear bearing positions of the unit, a signal acquisition and processing unit and a vibration data analysis unit; the temperature monitoring device comprises a temperature sensor and a temperature signal acquisition and processing unit which are arranged at the winding end and the bearing end of the motor unit and at the positions of other key components; the torque/rotating speed monitoring device comprises a torque/rotating speed sensor and a torque/rotating speed signal acquisition and processing unit, wherein the torque/rotating speed sensor is arranged at the transmission shaft end of the motor unit; and the control substations of the vibration signals, the temperature signals and the torque/rotating speed signals monitored by the motor unit operation monitoring system are accessed into all levels of safe operation control chains of the whole system according to danger level trigger signals.
The video monitoring system is designed according to the requirements of the whole system such as high risk, key important parts, unattended operation, remote viewing and the like, and the collected video monitoring information (human, animal and dangerous conditions) is accessed into each level of safe operation control chain of the whole system according to the safety level.
The method has the advantages that faults of the unit are processed according to the authority level, risk level and safety level of the unit, the control station and the component, especially when multiple faults occur simultaneously, the faults are processed according to the set level, loss of the unit caused by the faults can be reduced, and optimal operation of the unit is guaranteed.
As an optional implementation manner of this embodiment, when the number of the units is more than 2, the centralized control system further includes a centralized control center for controlling the more than 2 units, and the centralized control method includes: according to the authority levels, risk levels and safety levels of the centralized control center, the units, the control station and the components; and (4) processing the faults of the unit. The intelligent control of a single high-power unit is realized, the cluster control of a plurality of high-power units can be realized through a centralized control center, and the highly intelligent, automatic and unmanned operation in the industrial field is realized.
The centralized control center comprises independent control stations distributed on each device and a centralized control master station positioned in a control room, and the authority of each independent control station is limited to the control of the device to which the independent control station belongs and the safety control of the independent control station in each level of safety operation control chains of the whole system.
The centralized control master station has the highest level of control authority and the highest-priority safety control authority in each level of safety operation control chains of the whole system; meanwhile, the centralized control center utilizes powerful database functions to collect information of key and important parts of the whole motor operation system, parts with high risk levels and parts which have faults all the time into a big database, exerts the advantages of a big data platform, and can timely warn, maintain and replace, thereby ensuring safe and reliable operation of the whole motor operation system.
As an optional implementation manner of this embodiment, the processing the fault of the unit includes: and calling a pre-stored and set processing method corresponding to the fault to process the fault of the unit.
In order to eliminate and solve the faults, on the premise that the normal operation of the unit is ensured, under the premise that the unit does not stop, when the corresponding parts of the unit, the control stations and each control station have faults, the processing method corresponding to the faults is preserved and set in advance, and when the faults occur, the processing method corresponding to the faults is directly triggered, so that the faults are eliminated in time, and the safe, reliable and normal operation of the unit is ensured. The corresponding fault processing method is derived from fault solutions realized on the premise of ensuring that the unit does not shut down when the conventional unit fails, and the fault solutions form a safety processing control strategy corresponding to the faults and are pre-stored and set in advance. The fault handling method includes, but is not limited to, fault isolation, one-use-one-standby, hot backup, cold backup, fault on-line switching, etc.
As an optional implementation manner of this embodiment, the method further includes performing fault early warning and fault preprocessing according to parameter signal ranges and fault frequency levels before and after the faults occur in the previous unit, the control station, and the components. According to the operation and maintenance experience of the previous units, the information of a plurality of control stations and parts in each unit, particularly key and important parts, parts with high risk level and parts with high safety level, the fault reasons of the parameter signal state change conditions before and after the fault, fault frequency and the like are collected, recorded and combed, the fault frequency of each part of the unit is stored in advance, when the fault frequency of the corresponding fault occurrence time point is reached in the centralized control station, the operation systems of the plurality of units, the plurality of control stations and the parts in each unit according to the corresponding fault frequency level, early warning can be carried out in advance, corresponding maintenance measures such as replacement or online switching to backup items are carried out before the fault occurs, or maintenance personnel timely go to carry out treatment according to a corresponding fault pretreatment method to remove the fault in advance, ensuring normal operation.
The fault early warning method includes, but not limited to, sending fault early warning information to a centralized control master station, and informing the unit operation and maintenance personnel to process in a form of sound and light signals or terminal message display in a corresponding control station. Or the corresponding fault early warning information is directly sent to the handheld terminal of the unit operation and maintenance personnel, so that the unit operation and maintenance personnel can know the fault early warning point in time and take measures in time. The fault preprocessing method comprises the following steps: and switching the unit, the control station or the component which possibly fails to the corresponding backup redundancy unit, control station or component.
As an optional implementation manner of this embodiment, if the parameter signals of the unit, the control station, and the component are within the parameter signal range before and after the unit, the control station, and the component have failed in the previous time, or reach the corresponding failure frequency level, the failure pre-processing is triggered by performing failure pre-warning.
The method can judge the fault in advance, ensure the safety and reliability of the unit system, and realize the online automatic early warning function, and the fault early warning mode includes but is not limited to the modes listed in the embodiment, such as sending the positioning information including the fault to be generated, the parameter information of the unit, the control station or the component which may be in fault to the centralized control center, and the like, and after receiving the information, the centralized control center triggers the fault preprocessing, and the fault preprocessing method includes but is not limited to switching to the redundant backup item, and the like.
As an optional implementation manner of this embodiment, the method for processing the fault includes: and switching the unit, the control station or the component with the fault to the unit, the control station or the component with the corresponding backup redundancy.
The technical scheme of the embodiment selectively performs backup redundancy on the corresponding unit, control station or component according to the authority level, risk level and safety level of the unit, control station or component, and when a fault occurs, the unit, control station or component can be directly switched online through the backup redundancy unit, control station or component, so that the normal operation and reliable and stable operation of the unit, control station or component are ensured.
As an optional implementation manner of this embodiment, according to the fault information and fault location information feedback of the unit, the control station, or the component, a processing method corresponding to the fault, which is saved and set in advance, is invoked to process the fault of the unit.
The fault information is composed of abnormal signals detected by the sensing detection element, and the fault positioning information is used for positioning according to the corresponding fault position, such as GPS (global positioning system) position positioning, or can be identified according to the serial number attribute information of the related fault element to determine the corresponding fault positioning information.
According to the fault positioning information, the system and operation and maintenance personnel can quickly lock the fault position, trigger and call a processing method which is stored in advance and set to correspond to the fault to process the corresponding fault.
As an optional implementation manner of this embodiment, the fault determination method includes: and detecting and processing the parameter signals of the unit, the control station and the component, comparing the parameter signals with a set normal parameter signal range, and if the parameter signals are not in the normal parameter signal range, judging that the fault occurs.
And when the signals fed back by the unit, the control station and the component are abnormal, calling a safety processing method which is stored and set in advance and corresponds to the abnormal part according to the authority level, the risk level and the safety level of the unit, the control station and the component, and processing the abnormal part.
The safety processing method corresponding to the abnormal part comes from the abnormal signals appearing at the corresponding part before and when the fault occurs in the prior unit, and under the premise of ensuring that the unit does not stop and each control station normally operates, the abnormal signal eliminating scheme realized by the method prestores and sets the abnormal signal eliminating schemes corresponding to the unit, the control station and the part. And in the permission levels of the unit, the control station and the components, performing level sequencing according to the risk level and the safety level and the components in the centralized control master station, the control station and the control station of the unit.
Example 2
The embodiment provides a motor operation centralized control system, and the motor operation centralized control method according to any one of embodiments 1 includes: the centralized control center is used for detecting parameter signals of the unit, the control station and the component;
the fault judging unit is used for comparing the parameter signals of the unit, the control station and the component detected by the detecting unit with the set normal parameter signal range and judging whether the unit, the control station and the component have faults or not; the fault processing method storage unit is used for storing fault processing methods formed when the unit, the control station and the component have faults according to the authority levels, the risk levels and the safety levels of the unit, the control station and the component, and the fault processing method storage unit is called by the centralized control center when the unit, the control station and the component have the faults; and the fault processing unit is used for calling the fault processing method stored in the fault processing method storage unit by the centralized control center when the unit, the control station and the component have faults, controlling the fault processing unit and eliminating the faults according to the fault processing method.
In the running process of the motor unit, the running state temperature and the vibration speed/torque information of the motor, which are collected by the unit running monitoring system, and the variable-frequency drive control system feed back to the centralized control center.
a) In the stable operation process of the motor, along with the increase of the temperature rise of the winding and the iron core, the centralized control center sends out a control instruction to the independent control substation of the cooling water circulation system according to the operation electrical parameters of the motor fed back by the variable frequency drive control system, the state information of a pump and a valve of the cooling water circulation system shared by the independent control substations of the cooling water circulation system, the temperature difference of a valve port of the inlet/outlet cooling water and other parameters, so as to increase the circulation speed and the flow of the cooling water; the cooling water circulation system independently controls the substations to increase the running number of the pumps, adjusts the flow valves of the water pump units and the inlet/outlet cooling water valves of the motor units, ensures energy conservation and environmental protection as far as possible on the premise of ensuring the safety of the temperature rise of the motor, and realizes the intelligent control of the flow rate of the cooling circulation water.
b) If the temperature rise of the motor winding is abnormal, the centralized control center judges abnormal motor operation information according to the motor operation electrical parameters fed back by the variable-frequency drive control system and the excitation electrical parameters fed back by the excitation system, sends control instructions to the variable-frequency drive control system and the excitation system, adjusts the motor operation state, makes protection actions of different safety levels according to risk analysis and judgment of the centralized control center, and realizes efficient intelligent control, safe and stable operation of the whole motor unit.
And (4) system fault isolation, redundancy switching and normal operation of the unit.
And in the operation process of the motor unit, the centralized control center and each independent control station send out control instructions in time according to the feedback fault alarm signals and the information of the safety level, the risk level and the like of the fault alarm signals.
a) If the cooling water circulation system pump group gives a fault alarm, the centralized control center and the cooling water circulation system independent control station directly carry out isolated control on the fault pump group by the cooling water circulation system independent control station according to the safety level and risk level information of the fed-back fault alarm signal and the safety control authority priority level, and the standby pump group is switched in to operate, so that the normal operation of the cooling water circulation system of the motor unit is ensured.
b) If the lubricating oil and high-pressure oil top system high-pressure oil pump has a fault alarm, the centralized control center and the lubricating oil and high-pressure oil top system independent control station directly carry out isolated control on the fault high-pressure oil pump by the lubricating oil and high-pressure oil top system independent control station according to the safety level and risk level information of the fed-back fault alarm signal and the safety control authority priority level, and a standby high-pressure oil pump is switched in to operate, so that the normal operation of the lubricating oil and high-pressure oil top system of the motor unit is ensured.
As an optional implementation manner of this embodiment, the method further includes: the fault early warning big data unit is used for storing parameter signal information and fault frequency of the unit, the control station and the part before and after the fault occurs in the past time; the fault early warning and judging unit is used for comparing the parameter signals of the unit, the control station and the component detected by the detecting unit with parameter signal information of the unit, the control station and the component before and after the fault occurs all the time, and judging whether the fault is about to occur or not, or judging whether the unit, the control station and the component reach corresponding fault frequency to judge whether the fault is about to occur or not; the system also comprises a fault early warning unit, a fault early warning unit and a fault positioning unit, wherein the fault early warning unit is used for sending parameter signal information and fault positioning information of the units, control stations and components to be in fault to the centralized control center if the units, the control stations and the components to be in fault are in fault; the fault pre-processing method storage unit is used for storing fault pre-processing methods formed when the unit, the control station and the component are about to fail according to the authority levels, the risk levels and the safety levels of the unit, the control station and the component, and the fault pre-processing method storage unit is called by the centralized control center when the unit, the control station and the component are judged to fail by the fault early warning judgment unit; and the fault preprocessing unit is used for calling a fault preprocessing method by the centralized control center after the centralized control center receives the parameter signal information and the fault positioning information of the unit, the control station and the component to be subjected to the fault, controlling the fault preprocessing unit and eliminating the to-be-subjected fault according to the fault preprocessing method.
Faults trigger safety protection mechanisms at all levels, influence minimization and operation safety are achieved; and in the operation process of the motor unit, the centralized control center and each independent control station send out control instructions in time according to the feedback fault alarm signals and the information of the safety level, the risk level and the like of the fault alarm signals.
a) The safety level and the risk level of the fault alarm signal are low, the normal operation of the motor unit is not influenced, and according to the priority level of the safety control authority, the independent control stations directly send out control instructions to make protection actions corresponding to the safety level, so that the safe and stable normal operation of the whole motor unit is realized.
b) The safety level and the risk level of the fault alarm signal are intermediate levels, the normal operation of the motor unit is partially influenced, and according to the priority level of the safety control authority, the centralized control center or each independent control station sends out a control instruction to perform a protection action corresponding to the safety level, so that the safe and stable operation of the motor unit or the safe and stable halt is ensured. The operation safety and the influence minimization of the whole unit are realized.
c) The safety level and the risk level of the fault alarm signal are high, the normal operation or the surrounding safety of the motor unit is seriously influenced, and according to the priority level of the safety control authority, the centralized control center directly sends out a safety level protection action (emergency stop) to ensure that the motor unit is quickly stopped, thereby reducing the safety hazard brought by the fault to the motor unit and other systems as much as possible.
Big data early warning, fault accurate positioning and online operation and maintenance; the centralized control center utilizes powerful database functions to collect the information of key and important parts, parts with high risk level and parts with faults all the time of the whole motor operation system into a big database, exerts the advantages of a big data platform, performs early warning in time, accurate fault positioning and online operation and maintenance in the whole life cycle of the operation of the motor unit, and ensures the safe and reliable operation of the whole motor operation system.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (4)
1. A motor operation centralized control method is characterized by comprising the following steps:
setting priority according to the permission level, risk level and safety level of the unit, the control station and the component;
processing the faults of the unit according to the priority; the unit comprises more than one control station, and each control station consists of a plurality of components;
the processing of the faults of the unit comprises the following steps:
calling a pre-stored and set processing method corresponding to the fault to process the fault of the unit;
the method also comprises the steps of performing fault early warning and fault preprocessing according to parameter signal ranges and fault frequency levels before and after the faults occur in the unit, the control station and the components of the previous time;
the fault determination method comprises the following steps: detecting and processing parameter signals of the unit, the control station and the component, comparing the parameter signals with a set normal parameter signal range, and if the parameter signals are not in the normal parameter signal range, determining that the fault occurs;
when parameter signals of the unit, the control station and the component are within the parameter signal range before and after the unit, the control station and the component are failed in the previous time or reach the corresponding failure frequency level, performing failure early warning and triggering failure preprocessing;
the fault processing method comprises the following steps: switching the unit, the control station or the component with the fault to the unit, the control station or the component with the corresponding backup redundancy;
and calling a pre-stored and set processing method corresponding to the fault to process the fault of the unit according to the fault information and fault positioning information feedback of the unit, the control station or the component.
2. The centralized control method for motor operation according to claim 1, further comprising a centralized control center for controlling more than 2 machine sets when the number of the machine sets is more than 2, the centralized control method comprising:
according to the authority levels, risk levels and safety levels of the centralized control center, the unit, the control station and the components; and (5) processing the faults of the unit.
3. A motor operation centralized control system, characterized in that a motor operation centralized control method according to any one of claims 1-2, comprises: a centralized control center is arranged at the center of the central control system,
the detection unit is used for detecting parameter signals of the unit, the control station and the component;
the fault judging unit is used for comparing the parameter signals of the unit, the control station and the component detected by the detecting unit with the set normal parameter signal range and judging whether the unit, the control station and the component have faults or not;
the fault processing method storage unit is used for storing fault processing methods formed when the unit, the control station and the component have faults according to the authority levels, the risk levels and the safety levels of the unit, the control station and the component, and the fault processing method storage unit is called by the centralized control center when the unit, the control station and the component have the faults;
and the fault processing unit is used for calling the fault processing method stored in the fault processing method storage unit by the centralized control center when the unit, the control station and the component have faults, controlling the fault processing unit and eliminating the faults according to the fault processing method.
4. The system of claim 3, further comprising:
the fault early warning big data unit is used for storing parameter signal information and fault frequency of the unit, the control station and the part before and after the fault occurs in the past time;
a fault early warning and judging unit for comparing the parameter signals of the unit, the control station and the component detected by the detecting unit with the parameter signal information of the unit, the control station and the component before and after the fault, judging whether the fault is about to occur, or,
judging whether the unit, the control station and the component reach corresponding fault frequencies to judge whether a fault is about to occur;
the system also comprises a fault early warning unit, a fault early warning unit and a fault positioning unit, wherein the fault early warning unit is used for sending parameter signal information and fault positioning information of the units, control stations and components to be in fault to the centralized control center if the units, the control stations and the components to be in fault are in fault;
the fault pre-processing method storage unit is used for storing fault pre-processing methods formed when the unit, the control station and the component are about to fail according to the authority levels, the risk levels and the safety levels of the unit, the control station and the component, and the fault pre-processing method storage unit is called by the centralized control center when the unit, the control station and the component are judged to fail by the fault early warning judgment unit;
and the fault preprocessing unit is used for calling a fault preprocessing method by the centralized control center after the centralized control center receives the parameter signal information and the fault positioning information of the unit, the control station and the component which are about to fail, controlling the fault preprocessing unit and eliminating the failure which is about to occur according to the fault preprocessing method.
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