CN101795294A - Large generator set safety monitoring wireless sensor network system and method thereof - Google Patents
Large generator set safety monitoring wireless sensor network system and method thereof Download PDFInfo
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Abstract
The invention relates to a large generator set safety monitoring wireless sensor network system and a method thereof. The system is provided with a local monitoring center, a remote monitoring center and a power plant monitoring micronet comprising multiple sensor nodes arranged on a device and a base station node, wherein the sensor nodes and the base station node communicate with each other by wireless mesh network protocol, and the communication between the base station node and the local monitoring center is in the combined mode of a fieldbus and an Ethernet interface; the sensor nodes use a radio-frequency transceiver module to receive the control commands sent by the local monitoring center or the remote monitoring center through the base station node and use a sensor module to acquire data, and the acquired data is packed and is then transmitted to the base station node; and the data obtained by the monitoring micronet is transmitted to the local monitoring center through the base station node or is transmitted to the remote monitoring center through the fieldbus, and working personnel of the local monitoring center or the remote monitoring center can monitor all the parameters and history data of the on-site generator set by sending short messages or logging on the WWW browser.
Description
Technical field
The present invention relates to the radio sensor network monitoring field, particularly a kind of large generator set safety monitoring wireless sensor network system and method thereof.
Background technology
At present, 600MW, 1000MW Generator Set have become main force's unit of China's electric power system, and setting up fairly perfect supporting watch-dog at the Host Security operation of Generator Set, but, automatic collection at the main auxiliary equipment information of fired power generating unit is also less, only can satisfy the requirement of low-level monitoring.Rotating machinery has accounted for very big proportion in the middle of subsidiary engine, comprises coal pulverizer, water supply pump, forced draft fan, induced draft fan and high-pressure heater etc.National 200MW and above unit reliability performance index were added up in 2009 the statistical result showed of announcement according to State Grid reliability management center: domestic coal pulverizer failure rate reaches 8.21 times/year, and unplanned outage rate is 2.05%; Water supply pump group failure rate reaches 3.65 times/year, and unplanned outage rate is 0.29%; The forced draft fan failure rate is 0.52 time/year, and unplanned outage rate is 0.04%; The induced draft fan failure rate is 0.53 time/year, and unplanned outage rate is 0.03%; The high-pressure heater failure rate is 6.45 times/year, and unplanned outage rate is 0.32%.
The unplanned stoppage in transit reason of the major pant item of Power Plant is very complicated, but from total situation, is chief reasons comparatively thereby the rotating machinery partial vibration causes temperature height, wearing and tearing greatly, is necessary to carry out tracing observation.Early stage fault and random fault generally can not be prevented by hard time maintenance, should adopt methods such as protection, monitoring, isolation and self diagnosis, eliminate and weaken failure effect.Because Controlling Auxiliaries in Power Plants is wide in variety, performance is different, particularly subsidiary engine distributes and disperses, far away with the distance of central station of floating dock, existing part DCS does not have generating set subsidiary engine (water supply pump, coal powder fan, air blast, induced draft fan) vibration monitoring diagnostic function often can not in time be found because of the subsidiary engine vibration exceeding the standard, causes serious accident.For example 4 adjustable axial id fans of AN25eb type stator blade of two 300MW machines of shimen Hunan power plant configuration set are repeatedly because of vibrating excessive be forced to load shedding and even shutdown blowing out.Because induced draft fan away from central station of floating dock, does not have other remote monitoring equipment again, the operations staff can't monitor the operation conditions of blower fan in time, exactly, and the induced draft fan vibration directly threatens the unit safety economical operation.
For the vibration problem of the major pant item of large-scale unit, way is that a simple data acquisition unit is installed at the scene usually, is placed on the monitored equipment by using lead to draw a plurality of sensor probes, monitors different safety in production index parameters.Transducer is many more, and control line and data wire are many more.Breakage and crack conditions appear in various leads in process of production easily, and metal joint also gets rusty easily.Simultaneously, the operations staff needs regularly data download on the harvester at scene, delivers to host computer system analysis then.This mode had both increased probability that equipment breaks down and operations staff's workload, can not carry out the real-time online status monitoring to subsidiary engine, can not in time not find the fault that subsidiary engine exists, and missed the opportunity of taking measures.And it is more and more outstanding because of the accident probability of auxiliary machinery fault initiation unit outage at present, conventional timing is patrolled the maintenance mode of surveying or manually regularly observing and can not be met the demands, if can not effectively monitor, just can't really realize the safe and reliable operation of unit to subsidiary engine.
In addition, in recent years (network times), new power plant construction has generally been set up the rack of plant level supervisory information system (SIS) and management information system (MIS), and has disposed monitoring and management softwares such as many failure diagnosises, repair based on condition of component and performance optimization.But not only because these softwares still owe ripe, the more important thing is that element task do not catch up with, the information that the field apparatus level is gathered automatically very little, therefore, these senior being applied to are cooked a meal without rice.Therefore, if do not address this problem, SIS and MIS or with further input can not really bring into play benefit.Objective situation requires to accelerate to realize that field apparatus is digitalized, and increase should increase the amount of information of collection according to SIS and MIS needs, finish thermal power plant's networking task comprehensively, really realize thermal power plant's digitlization, and then could realize the informationalized target of thermal power plant preferably.
Summary of the invention
According to the deficiencies in the prior art, the object of the present invention is to provide a kind of large generator set safety monitoring wireless sensor network system and method thereof, sensor node is integrated on field control equipment and the subsidiary engine equipment, control signal and the data that collect transmit via radio channel, thereby realize Generator Set field apparatus controlled in wireless and subsidiary engine Equipment Inspection sensor wirelessization.
Technical scheme of the present invention is: a kind of large generator set safety monitoring wireless sensor network system, it is characterized in that: be provided with local monitoring center, remote monitoring center and at least one group of a plurality of sensor nodes and power plant's monitoring microgrid that base-station node is formed that places on the equipment, adopt the wireless mesh fidonetFido to communicate between sensor node and the base-station node, the communication mode of taking fieldbus and Ethernet interface to combine between base-station node and the local monitoring center; Sensor node contains MCU, radio-frequency (RF) receiving and transmission module, sensor assembly, power module and external interface unit.Wherein, sensor assembly disposes different transducers according to the monitoring target difference, as by the poor rotating speed that rises between vibration, axial displacement, rotor and the housing of assembling electric vortex sensor measuring axle; Measure absolute vibration such as shell shakes, watt shakes by acceleration transducer; Vibration pressure by the pressure sensor measuring system etc.Base-station node contains MCU, wireless networking unit, man-machine dialogue interface, communication interface, warning device and power module, and the communication interface of base-station node is supported Ethernet interface and field-bus interface simultaneously; Sensor node receives local monitoring center by radio-frequency (RF) receiving and transmission module or remote monitoring center is passed through the control command that base-station node is sent, use sensor assembly to carry out data acquisition, data after the collection are passed to base-station node after packing, the data that the monitoring microgrid obtains are passed to local monitoring center or are delivered to remote monitoring center by fieldbus by base-station node, and the staff of local monitoring center and remote monitoring center is by sending SMS message or landing the WWW browser and realize the parameters and the historical data of on-site generated power unit are monitored.
When can not direct communication between two sensor nodes of monitoring in the microgrid or between sensor node and the base-station node, will adopt other nodes around it to carry out transistroute automatically.
Base-station node is furnished with touch-screen and measures control module, by touch-screen the equipment state of generating set is carried out real-time data acquisition, collect data and realize local storage, and on touch-screen, show, base-station node also is equipped with blue tooth interface, the monitoring personnel carry out man-machine interaction by handheld device and field monitoring microgrid, the device status data that the monitoring microgrid collects is transferred to the handheld device end by Bluetooth communication, and the control command of handheld device is carried out field apparatus by Bluetooth communication.
Advantage of the present invention and remarkable result: changed low-level monitoring and difficult present situation of monitoring that current large-scale generator set monitoring system exists, realized the controlled in wireless of Generator Set field apparatus and the detecting sensor wireless penetration of subsidiary engine equipment by wireless sensor network technology.The physical circuit that wireless technology has been removed between the communication equipment connects, and wireless sensor node can self-organizing, can cancel at any time, interpolation or change monitoring object, thereby improve the reliability and the autgmentability of system.Simultaneously, the monitoring of the wireless and hand-hold type of system has reduced monitoring personnel's labour intensity, has improved monitoring personnel's comfort level and operating efficiency.
Description of drawings
Fig. 1 is the composition frame chart of system of the present invention;
Fig. 2 is the sensor node structured flowchart of system of the present invention;
Fig. 3 is the base-station node structured flowchart of system of the present invention;
Fig. 4 is a systems approach flow chart of the present invention;
Fig. 5 is the base-station node method flow diagram of system of the present invention;
Fig. 6 is the sensor node method flow diagram of system of the present invention.
Embodiment
Referring to Fig. 1, sensor node 2 that multiple spot is disposed and base-station node 3 are formed the monitoring microgrid 1 of thermal power plant.Adopt the wireless mesh fidonetFido to communicate between sensor node 2 and the base-station node 3, two nodes in monitoring microgrid 1 (can be two sensor nodes 2, also can be sensor node 2 and base-station node 3) between can not direct communication the time, will adopt other nodes around it to carry out transistroute automatically.The control information executive control operation that sensor node 2 is sent according to local monitoring center 4 or remote monitoring center 6 or carry out the device status data collection, the data that field monitoring microgrid 1 obtains are passed to local monitoring center 4 or are delivered to remote monitoring center 6 by fieldbus 5 by base-station node 3.The staff of local monitoring center 4 and remote monitoring center 6 can be by sending SMS message or landing the WWW browser and realize the parameters and the historical data of on-site generated power unit are monitored.
The mode of having taked fieldbus and Ethernet interface to combine between base-station node and the local monitoring center 4, both can satisfy the requirement that current most Generator Set health monitoring system adopts Ethernet interface, possess perspectively again, after fieldbus is widely used, can successfully incorporate in the new network system.
The sensor node 2 of Fig. 2 includes MCU, radio-frequency (RF) receiving and transmission module, sensor assembly, power module and external interface unit.MCU is the core of sensor node 2, mainly realizes data processing and storage.Sensor node 2 receives local monitoring center 4 by radio-frequency (RF) receiving and transmission module or remote monitoring center 6 is passed through the control command that base-station nodes 3 are sent, and uses sensor assembly to carry out data acquisition, and the data after the collection are passed to base-station node 3 after packing.Power module is realized the energy supply of sensor node 2.External interface unit realizes that mainly more the expansion of multisensor module is used.Sensor assembly disposes different transducers according to the monitoring target difference, comprises the current vortex sensor of the poor rotating speed that rises between vibration, axial displacement, rotor and the housing of measuring axle; Measure the acceleration transducer of absolute vibration such as shell shakes, watt shakes; The pressure sensor of measuring system vibration pressure etc.The power module of sensor node 2 is provided with energy on-line monitoring function.Constantly monitor by the energy to node, if the energy of node is lower than the energy threshold of setting, this sensor node 2 will send under voltage to base-station node 3 and report to the police, and enter into resting state automatically, wait for the supply of new energy.If obtain new energy, this sensor node 2 will be waken up automatically.Otherwise, keep resting state always.
The base-station node 3 of Fig. 3 is equipped with touch-screen and measures control module, can directly carry out real-time data acquisition by touch-screen to the equipment state of generating set, collects data and realizes local storage, and show on touch-screen.Simultaneously, base-station node 3 also is equipped with blue tooth interface, the monitoring personnel can carry out man-machine interaction by handheld device and field monitoring microgrid 1, the device status data that monitoring microgrid 1 collects will be transferred to the handheld device end by Bluetooth communication, and the control command of handheld device also can be carried out field apparatus by Bluetooth communication.
Base-station node 3 mainly is made up of MCU, wireless networking unit, man-machine dialogue interface, communication interface, warning device and power module.The communication interface of base-station node 3 is supported Ethernet interface and field-bus interface simultaneously, has so both satisfied the requirement of current system data interface (Ethernet interface), has satisfied the growth requirement of system's employing field-bus interface again.Simultaneously, according to different needs, the communication interface of base-station node 3 has also designed gsm communication interface, telephone line modem interface, network interface, blue tooth interface and serial line interface and USB interface, the data (comprising warning message) that field monitoring microgrid 1 obtains can transmit to the local monitoring center 4 and the remote monitoring center 6 of thermal power plant simultaneously, thereby can allow the monitoring personnel understand the working condition of on-the-spot unit equipment in real time.
The observation interface of base-station node 3 comprises communication port configuration interface, appliance control interface and data display interface.The communication port configuration interface is mainly realized the communication parameter configuration and the alarm threshold value setting of itself and local monitoring center 4 and remote monitoring center 6.Appliance control interface is mainly realized the operation of field apparatus is controlled.The data display interface of operation can realize management, demonstration and the storage of real time data on base-station node 3, and content displayed includes node ID, device name, equipment state, real-time numerical value, whether warning etc. is arranged.The user can in time understand the operating state of generating set by monitoring picture, tendency chart, historical data etc. in real time.
Base-station node 3 is equipped with warning device, if the equipment state value that certain sensor node 2 monitors has surpassed setting threshold, with the warning device that starts automatically on the base-station node 3, and on the touch-screen of base-station node 3 real-time display alarm place.Warning message also shows in local monitoring center 4 or remote monitoring center 6 simultaneously in real time.The monitoring personnel can remove by the control interface of moving on the base-station node 3 and report to the police, and also can be sent by local monitoring center 4 or remote monitoring center 6 and remove alarm command to stop warning.The staff of thermal power plant can monitor the on-the-spot health status of Generator Set in real time by realization in the work station of local monitoring center 4 or remote monitoring center 6, can also realize obtaining the Generator Set field data by handheld device or base-station node 3.Base-station node 3 supports local sound and light alarm and long-range short message to report to the police simultaneously, also can be on the computer of local monitoring center 4 and remote monitoring center 6 display alarm information.
Except comprising communication port configuration interface, appliance control interface and data display interface, also include the network topology display interface on the observation interface of the computer run of local monitoring center 4 and remote monitoring center 6.The network topology display interface mainly carries out online demonstration to the group network topological structure of node in the field monitoring microgrid 1, thereby is convenient to understand the situation that current network is disposed, and can adjust to realize the network optimization at the node distribution.
Base-station node 3 and sensor node 2 are supported powered battery and external power source simultaneously.Integrated Bluetooth function on the handheld device of local monitoring center 4.
Shown in Figure 4, the concrete steps of systems approach of the present invention are as follows:
Step S4-1, local monitoring center 4 and remote monitoring center 6 start;
Step S4-2 starts the base-station node 3 of serving as network coordinator.After base-station node 3 started, the network short address of the ID of whole network, base-station node 3 and rf channel etc. were all determined, begin to wait for that sensor node 2 joins in the network of base-station node 3 foundation;
Step S4-3, sensor node 2 starts, and automatic search network, and finally joins in the network of base-station node 3 foundation.Sensor node 2 can not carry out the direct communication general with base-station node 3 and carry out transistroute by other sensor node 2 automatically.
Step S4-4, sensor node 2 receive the equipment state acquisition instructions that local monitoring center 4 or remote monitoring center 6 are sent by base-station node 3, will read integrated sensor assembly thereon, thereby obtain the data of unit health status.The equipment state acquisition instructions has comprised sensor node 2ID number, acquisition instructions and setting threshold that equipment state is concrete.
The threshold value that step S4-5, sensor node 2 will collect in data and the equipment state acquisition instructions compares.If the data that collect have surpassed preset threshold, sensor node 2 will be carried out sound and light alarm, and send alarm command by base-station node 3 to local monitoring center 4 and remote monitoring center 6.
Step S4-6, sensor node 2 receive the Equipment Control instruction that local monitoring center 4 or remote monitoring center 6 are sent by base-station node 3, with the actuating equipment control operation.
Step S4-7, equipment is after the successful execution control operation, sensor node 2 can send the current device state by base-station node 3 to local monitoring center 4 or remote monitoring center 6 automatically, make the monitoring personnel understand the running status after Equipment Control is operated, thereby control operation is just now confirmed with safety in production.
Shown in Figure 5, the flow process concrete steps of base-station node of the present invention are as follows:
Step S5-1, base-station node 3 starts, and carries out power-on self-test;
Step S5-2, the touch panel device of unlatching base-station node 3, the operation of base-station node 3 can realize based on touch-screen.
Step S5-3, the communication parameter configuration of execution base-station node 3 and local monitoring center 4 and remote monitoring center 6.When the handheld device of local monitoring center 4 is communicated by letter with base-station node 3, by reading the data of the i.e. mouth acquisition of the port base-station node 3 that bluetooth fictionalized on the handheld device.
Step S5-4 by man-machine dialog interface on the operation base-station node 3, selects the sensor node 2 of participation work.
Step S5-5 to instruction of sensor node 2 transmitting apparatus state acquisitions or the equipment operation control command chosen, and waits for that the sensor node of choosing 2 is to its return data.
After step S5-6, sensor node 2 receive the equipment state acquisition instructions that base-station node 3 sends, the data of self integrated sensor assembly will be read.If the data that collect surpass setting threshold, sensor node 2 will send alarm signal to base-station node 3, and carry out sound and light alarm by base-station node 3.
Step S5-7, if what sensor node 2 turned back to base-station node 3 is normal data, or after the control command of base-station node 3 carried out by sensor node 2, the running status confirmation of the current device that returns by sensor node 2, these data all will be finished storage on base-station node 3 so, and show on the touch-screen of base-station node 3.
Step S5-8, sensor node 2 is delivered to the data of base-station node 3, comprise equipment state confirmation after data that the equipment state collection returns, the control operation, or alarm signal, all will send to local monitoring center 4 and remote monitoring center 6, show and storage operation thereby carry out back-end data by base-station node 3.
Shown in Figure 6, the flow process concrete steps of sensor node of the present invention are as follows:
Step S6-1, sensor node 2 starts, and power-on self-test is finished the transducer that self disposes, the initialization of radio-frequency (RF) transceiver.
Step S6-2, sensor node 2 after receiving the equipment state acquisition instructions or equipment operation control command that base-station node 3 sends, execution command.
Step S6-3, instruct complete after, sensor node 2 automatically with data to base-station node 3 transmission.If sensor node 2 can not directly be communicated by letter with base-station node 3, will carry out transistroute by other sensor nodes 2 around it automatically.
Claims (6)
1. large generator set safety monitoring wireless sensor network system, it is characterized in that: be provided with local monitoring center, remote monitoring center and at least one group of a plurality of sensor nodes and power plant's monitoring microgrid that base-station node is formed that places on the equipment, adopt the wireless mesh fidonetFido to communicate between sensor node and the base-station node, the communication mode of taking fieldbus and Ethernet interface to combine between base-station node and the local monitoring center; Sensor node contains microprocessor unit MCU, radio-frequency (RF) receiving and transmission module, sensor assembly, power module and external interface unit, base-station node contains MCU, wireless networking unit, man-machine dialogue interface, communication interface, warning device and power module, and the communication interface of base-station node is supported Ethernet interface and field-bus interface simultaneously; Sensor node receives local monitoring center by radio-frequency (RF) receiving and transmission module and remote monitoring center is passed through the control command that base-station node is sent, use sensor assembly to carry out data acquisition, data after the collection are passed to base-station node after packing, the data that the monitoring microgrid obtains are passed to local monitoring center and are delivered to remote monitoring center by fieldbus by base-station node, and the staff of local monitoring center and remote monitoring center realizes the parameters and the historical data of on-site generated power unit are monitored by sending SMS message, land the WWW browser.
2. according to the described large generator set safety monitoring wireless sensor network system of claim 1, it is characterized in that: when can not direct communication between two sensor nodes of monitoring in the microgrid or between sensor node and the base-station node, will adopt other nodes around it to carry out transistroute automatically.
3. according to the described large generator set safety monitoring wireless sensor network system of claim 1, it is characterized in that: base-station node is furnished with touch-screen and measures control module, by touch-screen the equipment state of generating set is carried out real-time data acquisition, collect data and realize local storage, and on touch-screen, show, base-station node also is equipped with blue tooth interface, the monitoring personnel carry out man-machine interaction by handheld device and field monitoring microgrid, the device status data that the monitoring microgrid collects is transferred to the handheld device end by Bluetooth communication, and the control command of handheld device is carried out field apparatus by Bluetooth communication.
4. according to the monitoring method of claim 1 or 2 or 3 described large generator set safety monitoring wireless sensor network systems, concrete steps are:
Step S4-1, local monitoring center 4 and remote monitoring center 6 start;
Step S4-2, start the base-station node 3 of serving as network coordinator, after base-station node 3 started, the network short address of the ID of whole network, base-station node 3 and rf channel etc. were all determined, begin to wait for that sensor node 2 joins in the network of base-station node 3 foundation;
Step S4-3, sensor node 2 starts, and automatic search network, and finally joins in the network of base-station node 3 foundation, when sensor node 2 can not carry out direct communication with base-station node 3, the sensor node 2 by other is automatically carried out transistroute.
Step S4-4, sensor node 2 receives the equipment state acquisition instructions that local monitoring center 4 or remote monitoring center 6 are sent by base-station node 3, integrated sensor assembly thereon will be read, thereby obtain the data of unit health status, the equipment state acquisition instructions has comprised sensor node 2ID number, acquisition instructions and setting threshold that equipment state is concrete;
Step S4-5, the threshold value that sensor node 2 will collect in data and the equipment state acquisition instructions compares, if the data that collect have surpassed preset threshold, sensor node 2 will be carried out sound and light alarm, and send alarm command by base-station node 3 to local monitoring center 4 and remote monitoring center 6;
Step S4-6, sensor node 2 receive the Equipment Control instruction that local monitoring center 4 or remote monitoring center 6 are sent by base-station node 3, with the actuating equipment control operation;
Step S4-7, equipment is after the successful execution control operation, sensor node 2 sends the current device state by base-station node 3 to local monitoring center 4 or remote monitoring center 6 automatically, make the monitoring personnel understand the running status after Equipment Control is operated, thereby control operation is just now confirmed with safety in production.
5. according to the monitoring method of the described large generator set safety monitoring wireless sensor network system of claim 4, the concrete steps of base-station node flow process are:
Step S5-1, base-station node 3 starts, and carries out power-on self-test;
Step S5-2, the touch panel device of unlatching base-station node 3, the operation of base-station node 3 can realize based on touch-screen;
Step S5-3, carry out the communication parameter configuration of base-station node 3 and local monitoring center 4 and remote monitoring center 6, when the handheld device of local monitoring center 4 is communicated by letter with base-station node 3, by reading the data of the i.e. mouth acquisition of the port base-station node 3 that bluetooth fictionalized on the handheld device;
Step S5-4 by man-machine dialog interface on the operation base-station node 3, selects the sensor node 2 of participation work;
Step S5-5 to instruction of sensor node 2 transmitting apparatus state acquisitions or the equipment operation control command chosen, and waits for that the sensor node of choosing 2 is to its return data;
Step S5-6, after sensor node 2 receives the equipment state acquisition instructions that base-station node 3 sends, the data of self integrated sensor assembly will be read, if the data that collect surpass setting threshold, sensor node 2 will send alarm signal to base-station node 3, and carry out sound and light alarm by base-station node 3;
Step S5-7, if what sensor node 2 turned back to base-station node 3 is normal data, or after the control command of base-station node 3 carried out by sensor node 2, the running status confirmation of the current device that returns by sensor node 2, these data all will be finished storage on base-station node 3 so, and show on the touch-screen of base-station node 3;
Step S5-8, sensor node 2 is delivered to the data of base-station node 3, comprise equipment state confirmation after data that the equipment state collection returns, the control operation, or alarm signal, all will send to local monitoring center 4 and remote monitoring center 6, show and storage operation thereby carry out back-end data by base-station node 3.
6. according to the monitoring method of the described large generator set safety monitoring wireless sensor network system of claim 4, the concrete steps of sensor node flow process are:
Step S6-1, sensor node 2 starts, and power-on self-test is finished the transducer that self disposes, the initialization of radio-frequency (RF) transceiver;
S6-2, sensor node 2 after receiving the equipment state acquisition instructions or equipment operation control command that base-station node 3 sends, execution command;
Step S6-3, instruct complete after, sensor node 2 automatically with data to base-station node 3 transmission.If sensor node 2 can not directly be communicated by letter with base-station node 3, will carry out transistroute by other sensor nodes 2 around it automatically.
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| CN103345227B (en) * | 2013-07-02 | 2015-09-09 | 东南大学 | A kind of micro-capacitance sensor monitoring and energy management apparatus and method |
| CN103345227A (en) * | 2013-07-02 | 2013-10-09 | 东南大学 | Micro grid monitoring and energy management device and method |
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