CN113990053A - On-line evaluation system for hydraulic working gate of pumped storage power station - Google Patents
On-line evaluation system for hydraulic working gate of pumped storage power station Download PDFInfo
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- CN113990053A CN113990053A CN202111332806.7A CN202111332806A CN113990053A CN 113990053 A CN113990053 A CN 113990053A CN 202111332806 A CN202111332806 A CN 202111332806A CN 113990053 A CN113990053 A CN 113990053A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention discloses an on-line evaluation system for a hydraulic working gate of a pumped storage power station, which belongs to the technical field of on-line monitoring of hydraulic engineering. Monitoring is carried out under the flood overflow condition through the metal foil gage in the gate, avoids interference information in the monitoring process, consequently utilizes the strain casket to carry out single-point sampling, and the luminance that utilizes varistor lamp pearl release in the information acquisition process changes the shooting environment of camera, is convenient for sort out the abnormal conditions according to the photo gray level, and the supplementary information after this abnormal conditions can regard as the metal foil gage trouble, also can regard as the reference foundation in the maintenance process.
Description
Technical Field
The invention belongs to the technical field of hydraulic engineering on-line monitoring, and particularly relates to an on-line evaluation system for a hydraulic work gate of a pumped storage power station.
Background
The spillway is an important flood discharge building of a hydropower station, and once problems occur in the operation process, extremely serious consequences can be caused. An oroverl dam spillway accident in the united states, such as occurred in 2017 at 2 months, caused an emergency diversion of approximately 18.8 x 104 people in the downstream area of the dam. And for example, the major damage of the auxiliary spillway of the Toddbrook reservoir dam in Debyshire, UK, 8 months in 2019 causes about 1500 residents in the town of Whaley Bridge at the downstream of the Toddbrook reservoir dam to be emergently evacuated. The accidents sound the alarm clock, the total number of the dams in China is the first in the world at present, and the safety management and risk prevention and control of the dams become the key points of dam management in the future.
Spillways as part of dam outlet structures are more important for safety management. To ensure the safety and reliability of the dam spillway, scientific and detailed survey design and high-quality engineering construction at the early stage are the keys for avoiding the congenital major defects, and the operation mode, hidden danger investigation and maintenance management of the later-stage working gate are also very important.
Disclosure of Invention
In order to solve the problems, the invention aims to monitor the condition of defects of engineering, thereby providing an on-line evaluation system for the hydraulic working gate of the pumped storage power station.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a pumped storage power station water conservancy project gate on-line evaluation system includes the gate that all sets up in arbitrary leading water pipeline department, pastes a plurality of metal foil gauges of pasting on the gate surface and is used for controlling the processing system who gathers metal foil gauge information, gate department as the odd number has the casket of meeting an emergency, and the casket of meeting an emergency embeds has varistor lamp pearl, camera and the compass pointer that is fixed in the casket of meeting an emergency, and varistor lamp pearl and camera are connected with the threshold value valve, and the threshold value is used for the threshold value A of response vibration, and the camera shoots and transmits when the threshold value is greater than A, varistor lamp pearl is along with the increase of vibration and luminance increase, and the camera is just to compass pointer department, camera signal connection in processing system.
The single gate comprises a plurality of gates, wherein the gates are arranged in a row, the gates are arranged in a gate group, the gate group is provided with metal strain sheets, the metal strain sheets are arranged on the surfaces of the gates, the metal strain sheets are used as sub-groups, the first metal strain sheet of the sub-groups is used as a sub-master, the sub-master collects and summarizes information transmitted by the sub-groups, and the main metal strain sheet of the positive master is used as a master of the sub-master group to process system feedback conditions.
Furthermore, the processing system is connected with an alarm device, the alarm device is provided with three layers of early warning systems, the first layer of early warning system is used for receiving information transmitted by the positive master, the second layer of early warning system is used for receiving information transmitted by the auxiliary master, and the third layer of early warning system is used for receiving camera signals.
Further, the three-layer early warning system is connected with an error correction system, the error correction system is used for pairwise comparison and screening, information transmitted by the first-layer early warning system is a, information transmitted by the second-layer early warning system is b, information transmitted by the third-layer early warning system is c, when any two kinds of information are matched, an alarm is started, and if only one group of information alarms, a fault log is sent.
Further, the third-layer early warning system comprises a brightness contrast executing part, the brightness contrast executing part is used for screening photos with brightness higher than a preset value to transmit early warning information, and the photos with brightness lower than the preset value are subjected to time marking and then are transmitted to the processing system to generate a log.
Furthermore, an independent hydraulic hoist for dragging control is arranged at any gate, and a pump station is arranged at the adjacent gate.
Furthermore, the strain box is made of a sealed pressure-resistant material, and the compass pointer is provided with red paint.
Furthermore, any gate control screen is communicated with the power station computer monitoring system through a 1-channel RS485 communication interface, and the communication protocol is a Modbus communication protocol.
Furthermore, the system also comprises a local monitoring unit, wherein the local monitoring unit comprises a colored touch control screen with one side 10.4' and an emergency switch for manual operation.
After the scheme is adopted, the following beneficial effects are realized: 1. compared with the prior art of manual guard, this technical scheme adopts unmanned monitoring's theory, monitor under the metal foil gage through the gate to the flood discharge condition, avoid interference information among the monitor process, consequently, utilize the strain casket to carry out the single-point sample, the luminance that utilizes varistor lamp pearl release among the information acquisition process changes the shooting environment of camera, be convenient for sort out the abnormal conditions according to the photo gray, the supplementary information after the metal foil gage trouble can be regarded as to the abnormal conditions here, also can regard as the reference basis among the maintenance process.
2. Compared with a system for evaluating the environment through brightness, the technical scheme has the advantages that grouping instructions are carried out in the technical scheme, abnormal environment monitoring is carried out from a lower-level source, time required by alarming and monitoring is saved, the principle is that each metal strain gauge is used as independent sensing equipment, so that the environment condition of each place is sensed, in order to reduce the transmission of redundant information, the pressure of a processing system is reduced, a secondary master gauge is arranged at each gate, the secondary master gauge is used as information collection of all secondary sub-groups at the moment, coordination and unified instructions of the secondary sub-groups are facilitated, meanwhile, in order to facilitate transmission of the commands and reduction of failure rate, the secondary master gauges are uniformly divided into positive master gauges to be adjusted, the output efficiency of the instructions is improved, and the coordination of multiple nodes and the accuracy of signal collection of the multiple nodes are facilitated.
3. For the prior art who promotes the accuracy, utilize multilayer early warning system to promote unmanned monitoring's reliability among this technical scheme, carry out environmental monitoring through multilayer early warning system, simultaneously in order to reduce the error rate, still have error correction system among this technical scheme, through two liang of contrasts of information in the error correction system in order to reduce the wrong report of special condition, still turn to the troubleshooting trouble among the error correction system this moment, when a certain information and two other information take place the error report, for example, a information and b, c information is inconsistent, thereby judge that the monitoring piece that sends a information produces the trouble, consequently, monitoring personnel can overhaul according to the fault log of a information.
4. Compared with the prior art which is convenient to overhaul, the color touch screen is arranged in the technical scheme to project the environmental information, and manual operation and control are convenient for manual operation.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
the embodiment is basically as shown in the attached figure 1: the on-line evaluation system for the hydraulic work gate of the pumped storage power station comprises gates arranged at any water diversion pipeline, a plurality of metal strain gauges attached to the surfaces of the gates, a processing system for controlling and summarizing information of the metal strain gauges, and an on-site monitoring unit, wherein the on-site monitoring unit comprises a color touch control screen with one 10.4' side and an emergency switch for manual operation.
The gate as the singular number is provided with a strain box, a varistor lamp bead, a camera and a compass pointer fixed on the strain box are arranged in the strain box, the varistor lamp bead and the camera are connected with a threshold valve, the threshold valve is used for sensing a vibration threshold value A, when the threshold value is larger than A, the camera carries out shooting and transmission, the brightness of the varistor lamp bead is increased along with the increase of the vibration, the camera is over against the compass pointer, and the camera is in signal connection with a processing system. The arbitrary gate department all has the independent hydraulic hoist machine that is used for dragging control, and the gate control screen passes through 1 way RS485 communication interface and power station computer monitoring system communication, and the communication protocol is Modbus communication protocol, and adjacent gate department is provided with the pump station, and the casket that meets an emergency adopts sealed resistance to compression material preparation, and the compass pointer has red coating
The gate further comprises a linkage feedback system, the metal strain gauge on the surface of the single gate is used as an auxiliary sub-group, the main metal strain gauge used as a positive master gauge is arranged at the position of the odd gate, the first metal strain gauge of the auxiliary sub-group is used as an auxiliary master gauge, the auxiliary master gauge collects and summarizes information transmitted by the auxiliary sub-group, and the main metal strain gauge of the positive master gauge used as the auxiliary master gauge of the auxiliary master gauge is used for processing the feedback condition of the system
The processing system is connected with an alarm device, the alarm device is provided with three layers of early warning systems, the first layer of early warning system is used for receiving information transmitted by a positive master, the second layer of early warning system is used for receiving information transmitted by a secondary master, the third layer of early warning system is used for receiving camera signals, the three layers of early warning systems are connected with an error correction system, the error correction system is used for pairwise comparison and screening, the information transmitted by the first layer of early warning system is a, the information transmitted by the second layer of early warning system is b, the information transmitted by the third layer of early warning system is c, when any two kinds of information are matched, an alarm is started, and if only one group of information alarms, a fault log is sent. The third layer of early warning system comprises a brightness contrast executing part, wherein the brightness contrast executing part is used for screening the photos with the brightness higher than the preset value to transmit early warning information, and the photos with the brightness lower than the preset value are subjected to time marking and then are transmitted to the processing system to generate a log.
The specific implementation process is as follows: the main buildings of the power station hub comprise concrete panel rock-fill dams, right bank water inlets, right bank spillways, left bank flood discharge sand washing holes, ground power plants and the like. The diversion system of the power station is arranged on the left bank, the water inlet is arranged by adopting a single pipe, and the four diversion pipelines are provided with 4 holes and 4 quick emergency gates. 4 sets of inlet rapid accident gates are provided with pump stations in a two-machine one-station mode, and the two-machine one-control dragging control is carried out on 4 sets of hydraulic opening and closing machines, 2 sets of hydraulic pump stations, 4 sets of control systems and an electrical control cabinet.
The flood discharge sand washing hole is arranged on the left bank. The flood discharge sand washing hole working gate is driven and controlled in a one-machine one-control mode, and 1 set of hydraulic hoist, 1 set of hydraulic pump station and 1 set of electrical control cabinet are arranged. 4 overflow table hole radial work gates are arranged on the right bank. Each gate electric control system is provided with a hydraulic hoist electric starting cabinet and a hydraulic hoist electric control cabinet.
The TSXP571634M processor is adopted as the programming controller of the control system of the water inlet quick accident gate, the spillway working gate and the flood discharge and sand washing working gate. The processor has the advantages of high speed, large storage capacity, large I/O expansion capacity, strong environmental adaptability, strong network capability and the like. The control system comprises a power supply module, a switching value input/output module and an analog value input/output module. The motor is started using an ATS48 soft starter.
The in-situ monitoring unit is provided with a schneider color touch control screen of one side 10.4'. The gate control screen is communicated with the power station computer monitoring system through a 1-channel RS485 communication interface, and the communication protocol is a Modbus communication protocol. The input power supply of the control unit of the gate control system is taken from two power supplies, and a dual-power automatic switching device is configured to be mutually standby. In order to ensure that the data of the control system is not lost and the communication channel is not interrupted, each set of control system is also provided with 1 UPS power supply device for supplying power for 1 h.
This technical scheme adopts unmanned monitoring's theory, monitors under the spillover flood condition through the metal foil gage in the gate, avoids interference information in the monitor process, consequently utilizes the strain casket to carry out the single-point sample, and the luminance that utilizes varistor lamp pearl release in the information acquisition process changes the shooting environment of camera, is convenient for select the abnormal conditions according to the photo gray, and the supplementary information after the metal foil gage trouble can be regarded as to the abnormal conditions here, also can regard as the reference foundation in the maintenance process.
Carry out grouping instruction among this technical scheme, carry out abnormal environment monitoring from subordinate's root cause department, thereby save warning required time and monitoring required time, the principle lies in utilizing every metal foil gage as independent response equipment, thereby the environmental aspect of every department of response, in order to reduce the transmission of unnecessary information, reduce processing system's pressure, consequently, set up vice master slice in each gate department, vice master slice gathers as the information of all vice subgroups this moment, be convenient for to the coordination and the unified instruction of vice subgroup, in order to facilitate the transmission of order and reduce the fault rate simultaneously, divide into positive master slice in this technical scheme with vice master slice unification and transfer, promote the output efficiency of instruction, be convenient for the cooperation of multinode and the accuracy of multinode signal collection.
The reliability of unmanned monitoring is improved by utilizing a multilayer early warning system, environment monitoring is carried out through the multilayer early warning system, meanwhile, in order to reduce error reporting rate, an error correction system is further arranged in the technical scheme, false alarm of special conditions is reduced by pairwise comparison of information in the error correction system, at the moment, faults are checked in the error correction system, when a certain piece of information and the rest two pieces of information are in error reporting, for example, the information a is inconsistent with the information b and the information c, and therefore a monitoring piece which sends the information a is judged to have faults, and monitoring personnel can overhaul according to a fault log of the information a.
Claims (9)
1. The utility model provides a pumped storage power station hydraulic work gate is evaluation system on line which characterized in that: including all setting up the gate in arbitrary leading water pipeline department, paste a plurality of metal foil gauges and the processing system who is used for controlling the metal foil gauge information that gathers on the gate surface, gate department as the odd number has the casket that meets an emergency, and the casket that meets an emergency embeds has varistor lamp pearl, camera and is fixed in the compass pointer of meeting an emergency casket, and varistor lamp pearl and camera are connected with the threshold value valve, and the threshold value valve is used for the threshold value A of response vibration, and the camera shoots and transmits when the threshold value is greater than A, varistor lamp pearl is along with the increase of vibration and the increase in luminance, and the camera is just to compass pointer department, and camera signal connection is in processing system.
2. The system of claim 1 for on-line evaluation of a pumped storage power station hydraulic work gate, wherein: the single gate comprises a plurality of gates, and is characterized by further comprising a linkage feedback system, wherein metal strain gauges on the surface of the single gate are used as auxiliary sub-groups, main metal strain gauges used as a positive master plate are arranged at odd gates, a first metal strain gauge of the auxiliary sub-groups is used as an auxiliary master plate, the auxiliary master plate collects and summarizes information transmitted by the auxiliary sub-groups, and the main metal strain gauge of the positive master plate is used as a master of the auxiliary master group to process the feedback condition of the system.
3. The system of claim 2, wherein the system comprises: the processing system is connected with an alarm device, the alarm device is provided with three layers of early warning systems, the first layer of early warning system is used for receiving information transmitted by the positive master, the second layer of early warning system is used for receiving information transmitted by the auxiliary master, and the third layer of early warning system is used for receiving camera signals.
4. The system of claim 3 for on-line evaluation of the hydraulic work gates of pumped storage power stations, wherein: the three-layer early warning system is connected with an error correction system, the error correction system is used for pairwise comparison and screening, the information transmitted by the first-layer early warning system is a, the information transmitted by the second-layer early warning system is b, the information transmitted by the third-layer early warning system is c, when any two kinds of information are matched, an alarm is started, and if only one group of information alarms, a fault log is sent.
5. The system of claim 4, wherein the system comprises: the third-layer early warning system comprises a brightness contrast executing part, the brightness contrast executing part is used for screening the photos with the brightness higher than the preset value to transmit early warning information, and the photos with the brightness lower than the preset value are subjected to time marking and then are transmitted to the processing system to generate logs.
6. The system of claim 1 for on-line evaluation of a pumped storage power station hydraulic work gate, wherein: an independent hydraulic hoist for dragging control is arranged at any gate, and a pump station is arranged at the adjacent gate.
7. The system of claim 1 for on-line evaluation of a pumped storage power station hydraulic work gate, wherein: the strain box is made of a sealed pressure-resistant material, and the compass pointer is provided with red paint.
8. The system of claim 1 for on-line evaluation of a pumped storage power station hydraulic work gate, wherein: and any gate control screen is communicated with the power station computer monitoring system through a 1-channel RS485 communication interface, and the communication protocol is a Modbus communication protocol.
9. The system of claim 1 for on-line evaluation of a pumped storage power station hydraulic work gate, wherein: the system also comprises a local monitoring unit, wherein the local monitoring unit comprises a colored touch control screen with one side 10.4' and an emergency switch for manual operation.
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