CN110646731A - Method for monitoring efficiency of hydraulic generator - Google Patents
Method for monitoring efficiency of hydraulic generator Download PDFInfo
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- CN110646731A CN110646731A CN201910749223.0A CN201910749223A CN110646731A CN 110646731 A CN110646731 A CN 110646731A CN 201910749223 A CN201910749223 A CN 201910749223A CN 110646731 A CN110646731 A CN 110646731A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
The invention relates to a method for monitoring the efficiency of a hydraulic generator, which comprises the following steps: the method comprises the following steps that 1, monitoring data of equipment to be monitored of the hydraulic generator are collected based on an RFID wireless collection module; step 2, sending the monitoring data through a high-frequency RFID transmitting terminal in wireless networking connection with the RFID wireless acquisition module; and 3, receiving the monitoring data through the RFID reading unit, uploading the monitoring data to a monitoring platform through a data uploading unit, and calculating to obtain the efficiency characteristic data of the generator through the monitoring platform. The invention can safely, reliably, conveniently and comprehensively monitor the unit efficiency without influencing the normal operation of the original equipment, so that operators can fully master the equipment state condition, and powerful technical support is provided for the safe operation adjustment of the unit and the state evaluation of the equipment.
Description
Technical Field
The invention belongs to the technical field of generator efficiency monitoring, and particularly relates to a method for monitoring efficiency of a hydraulic generator.
Background
With the rapid development of electric power utilities in China, large hydroelectric generating sets are more and more, but due to various factors such as insufficient hardware configuration, complex operating environment, high difficulty in later technical modification and the like, the generator efficiency monitoring scheme of the existing power generation enterprises has the problems of less monitoring amount, incomplete monitoring content, complex monitoring data, unreliable measuring probes and potential safety hazards caused by wiring.
Disclosure of Invention
The invention aims to provide a method for monitoring the efficiency of a hydraulic generator, which aims to solve the technical problem.
The invention provides a method for monitoring the efficiency of a hydraulic generator, which comprises the following steps:
the method comprises the following steps that 1, monitoring data of equipment to be monitored of the hydraulic generator are collected based on an RFID wireless collection module;
step 2, sending the monitoring data through a high-frequency RFID transmitting terminal in wireless networking connection with the RFID wireless acquisition module;
and 3, receiving the monitoring data through the RFID reading unit, uploading the monitoring data to a monitoring platform through a data uploading unit, and calculating to obtain the efficiency characteristic data of the generator through the monitoring platform.
Further, the RFID wireless acquisition module adopts an active or passive RFID sensor.
Further, the data uploading unit adopts an NFC module, a Bluetooth module, a 4G module or a wired Ethernet module.
Further, the monitoring platform adopts a portable computer or an intelligent mobile terminal.
Further, the monitoring data comprises stator temperature, air cooler air temperature, cooling water temperature, cover plate temperature, slip ring temperature, environment temperature, air cooler cooling water flow, bearing cooling water flow, active power, reactive power, stator current, stator voltage, power factor, rotor current and rotor voltage.
Further, the generator performance characteristic data comprises generator loss, efficiency, temperature rise and data.
By means of the scheme, the efficiency of the unit can be safely, reliably, conveniently and comprehensively monitored by the efficiency monitoring method of the hydraulic generator under the condition that the normal operation of original equipment is not influenced, so that operators can fully master the state condition of the equipment, and powerful technical support is provided for safe operation adjustment of the unit and state evaluation of the equipment.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a flow chart of a method for monitoring the efficiency of a hydro-generator according to the present invention;
FIG. 2 is a diagram of the location of the measurement points of the RFID sensor of the present invention;
FIG. 3 shows an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, the present embodiment provides a method for monitoring the efficiency of a hydro-generator, including the following steps:
step S1, monitoring data of equipment to be monitored of the hydraulic generator are collected based on the RFID wireless collection module;
step S2, sending the monitoring data through a high-frequency RFID transmitting terminal in wireless networking connection with an RFID wireless acquisition module;
and step S3, receiving the monitoring data through the RFID reading unit, uploading the monitoring data to the monitoring platform through the data uploading unit, and calculating the performance characteristic data of the generator through the monitoring platform.
In this embodiment, the RFID wireless acquisition module employs an active or passive RFID sensor.
In this embodiment, the data uploading unit adopts an NFC module, a bluetooth module, a 4G module, or a wired ethernet module.
In this embodiment, the monitoring platform is a portable computer or an intelligent mobile terminal (e.g., a mobile phone).
In this embodiment, the monitoring data includes stator temperature, air cooler air temperature, cooling water temperature, cover plate temperature, slip ring temperature, ambient temperature, air cooler cooling water flow, bearing cooling water flow, active power, reactive power, stator current, stator voltage, power factor, rotor current, rotor voltage. The layout of measuring points of the sensor is shown in FIG. 2, wherein 1 is the surface of a slip ring cover of the generator to measure the temperature; 2, a generator excitation cabinet is used for measuring active power, reactive power, stator voltage, stator current, power factor, excitation current and excitation voltage; 3 is an upper guide bearing, 7 is a reasoning bearing cooling water pipe, and the temperature and the flow of the cooling water inlet and outlet are measured; 4, measuring the temperature of the surface of the upper cover plate of the generator; 5, measuring the temperature of the surface of the wind tunnel wall of the generator; 6, a cooling water pipe of the generator air cooler is used for measuring the temperature and the flow of inlet and outlet water; 8, measuring the surface temperature of the surface of a lower cover plate of the generator by a plurality of measuring points; 9, a generator stator is used for measuring the winding temperature, the iron core temperature and the end part temperature; 10, a generator air cooler is used for measuring the air temperature and the air volume of an inlet and an outlet; and 11, measuring excitation variable power (a three-phase low power factor watt meter or a power transmitter) for the excitation variable high-voltage side CT of the generator.
In this embodiment, the performance characteristic data of the generator includes generator loss, efficiency, temperature rise (output), and data. Analyzing and processing the real-time monitoring data according to the requirements of the regulation specification through the monitoring platform to form a report, and drawing an on-line monitoring curve and a trend analysis chart of the efficiency of the generator, such as: generator efficiency, loss of each part, temperature rise, no-load characteristics and the like.
Based on radio frequency identification technology (RFID) and ubiquitous Internet of things technology, the invention utilizes a temperature sensor, an ultrasonic flowmeter, a temperature sensor, an electric quantity collector and a power transmitter, identifies a specific target through an RFID reading unit, reads and writes monitoring data such as real-time active power, reactive power, temperature, flow and the like, and quickly calculates energy characteristic data such as loss, efficiency, temperature rise and the like of each part of the generator through a portable computer, thereby achieving the purpose of efficiently and accurately monitoring the efficiency of the generator in real time.
By the method for monitoring the efficiency of the hydraulic generator, the efficiency of the unit can be safely, reliably, conveniently and comprehensively monitored under the condition that the normal operation of the original equipment is not influenced, so that operators can fully master the state condition of the equipment, and powerful technical support is provided for the safe operation adjustment of the unit and the state evaluation of the equipment.
The performance characteristics of the generator are tested under different working conditions and different operating conditions under all working conditions, the correctness of the efficiency utilization of the generator is checked, and a basis can be provided for the state evaluation of the unit and the efficiency utilization of the unit.
Acquiring basic operation data, and adjusting the test condition to read basic state parameters of the tested unit, if: the air volume of the generator, the loss of the iron core of the generator, the loss of copper, the loss of wind friction and the like. And after the unit is overhauled every year, basic operation data needs to be analyzed and processed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The method for monitoring the efficiency of the hydraulic generator is characterized by comprising the following steps of:
the method comprises the following steps that 1, monitoring data of equipment to be monitored of the hydraulic generator are collected based on an RFID wireless collection module;
step 2, sending the monitoring data through a high-frequency RFID transmitting terminal in wireless networking connection with the RFID wireless acquisition module;
and 3, receiving the monitoring data through the RFID reading unit, uploading the monitoring data to a monitoring platform through a data uploading unit, and calculating to obtain the efficiency characteristic data of the generator through the monitoring platform.
2. The method for monitoring the efficiency of the hydraulic generator according to claim 1, wherein the RFID wireless acquisition module adopts an active or passive RFID sensor.
3. The method for monitoring the efficiency of the hydraulic generator according to claim 1, wherein the data uploading unit adopts an NFC module, a Bluetooth module, a 4G module or a wired Ethernet module.
4. The method for monitoring the efficiency of the hydraulic generator according to claim 1, wherein the monitoring platform is a portable computer or an intelligent mobile terminal.
5. The method for monitoring the efficiency of a hydro-generator according to any one of claims 1 to 4 wherein the monitoring data includes stator temperature, air cooler air temperature, cooling water temperature, cover plate temperature, slip ring temperature, ambient temperature, air cooler cooling water flow, bearing cooling water flow, active power, reactive power, stator current, stator voltage, power factor, rotor current, rotor voltage.
6. The hydro-generator performance monitoring method of claim 5 wherein the generator performance characteristic data includes generator loss, efficiency, temperature rise, data.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910749223.0A CN110646731A (en) | 2019-08-14 | 2019-08-14 | Method for monitoring efficiency of hydraulic generator |
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| CN201910749223.0A CN110646731A (en) | 2019-08-14 | 2019-08-14 | Method for monitoring efficiency of hydraulic generator |
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- 2019-08-14 CN CN201910749223.0A patent/CN110646731A/en active Pending
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| CN102223733A (en) * | 2011-04-08 | 2011-10-19 | 南京邮电大学 | Intellectualized uptown method under wireless sensor network based on radio frequency identification |
| CN102184627A (en) * | 2011-04-21 | 2011-09-14 | 南京航空航天大学 | Sensor data acquisition device used for severe environment |
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Application publication date: 20200103 |