CN114165382A - Method and system for testing absolute efficiency of hydroelectric generating set - Google Patents
Method and system for testing absolute efficiency of hydroelectric generating set Download PDFInfo
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- CN114165382A CN114165382A CN202111405321.6A CN202111405321A CN114165382A CN 114165382 A CN114165382 A CN 114165382A CN 202111405321 A CN202111405321 A CN 202111405321A CN 114165382 A CN114165382 A CN 114165382A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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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 application relates to a method and a system for testing absolute efficiency of a hydroelectric generating set, belonging to the technical field of hydroelectric generation, wherein the method comprises the following steps: acquiring original data acquired by a portable SCADA system acquisition device for the hydroelectric generating set; screening the original data according to a preset screening rule; and analyzing the screened data, and fitting an actually measured absolute efficiency curve. The actually measured absolute efficiency curve can be further compared with the designed absolute efficiency curve to obtain the difference; and automatically deriving an original data table of the actual measurement absolute efficiency test. The embodiment of the application utilizes the portable SCADA system collector to test the absolute efficiency of the hydroelectric generating set, improves the convenience, the precision, the intelligence and the operability of the test of the absolute efficiency of the hydroelectric generating set, and has the advantages of strong operability, small error of read data, accurate test result, quick and convenient test process and improved test efficiency and intelligence.
Description
Technical Field
The application relates to the technical field of hydroelectric power generation, in particular to a method and a system for testing absolute efficiency of a hydroelectric generating set.
Background
The absolute efficiency of the hydroelectric generating set refers to the relation ratio between the output power of the hydroelectric generating set and the input power of the water turbine, and is an important index for measuring the output performance of the hydroelectric generating set. In general, because a model test and a real machine test have a certain difference, the design efficiency provided by a hydroelectric generating set manufacturer is different from the efficiency generated when the hydroelectric generating set actually operates. When testing the absolute efficiency of a hydroelectric generating set, the conventional method is to measure and calculate various required data, read part of the data monitored by a power plant, integrate the data and the data, and obtain the actual measurement efficiency under each working condition through manual calculation. However, the method is sensitive to human subjective factors, such as reading unit power and volute inlet pressure, which can only be manually read, and has a large subjective error, so that the test measurement data has a large deviation, and even the calculation efficiency is obviously higher than the design efficiency.
At present, the test of the absolute efficiency of the hydroelectric generating set in China is carried out according to the GB/T15468-. The absolute efficiency test of the conventional hydroelectric generating set has the defects, so that the absolute efficiency test of the whole hydroelectric generating set has great defects.
Disclosure of Invention
The embodiment of the application provides a method and a system for testing absolute efficiency of a hydroelectric generating set, and aims to at least solve the problems that data reading errors are large, subjective interference is large, and data calculation is not intelligent in the related technology.
In a first aspect, an embodiment of the present application provides a method for testing absolute efficiency of a hydroelectric generating set, including: acquiring original Data acquired by a portable SCADA (Supervisory Control And Data acquisition) system acquisition device for a hydroelectric generating set; screening the original data according to a preset screening rule; and analyzing the screened data, and fitting an actually measured absolute efficiency curve.
In some of these embodiments, after said fitting a measured absolute efficiency curve, the method further comprises: comparing the actually measured absolute efficiency curve with a designed absolute efficiency curve to obtain a difference; and/or automatically deriving a raw data table of the measured absolute efficiency test.
In some embodiments, said fitting a measured absolute efficiency curve comprises: and fitting a polynomial under the least square rule to obtain an actually measured absolute efficiency curve.
In some embodiments, before the acquiring raw data of the hydroelectric generating set acquired by the portable SCADA system acquisition device, the method further includes: and checking whether the collectors of the SCADA system and the sensors of the measuring points normally operate or not.
In some embodiments, after the checking whether the SCADA system collector and the station sensors are operating normally, the method further comprises: and calibrating the active power and the volute inlet pressure, and determining the slope and intercept of each sensor.
In some of these embodiments, the raw data includes active power, flow, unit speed, vane opening, volute inlet pressure, upstream water level, downstream water level, and power factor of the hydro-electric unit.
In some embodiments, the measuring of the raw data includes: measuring the power by a generator power measurement system, wherein an uncertainty of the generator power measurement system is no greater than ± 0.54%; measuring the flow through an ultrasonic flow test system, wherein the uncertainty of the ultrasonic flow test system is not more than +/-0.5%; measuring the volute inlet pressure by a pressure transmitter, wherein the absolute uncertainty of the pressure transmitter is no greater than ± 0.1 m.
In some of these embodiments, the method further comprises: the deviation of the working water head is controlled to be not more than +/-1%, and the total uncertainty of the test absolute efficiency is not more than +/-0.75%.
In some embodiments, the screening rules include sector exclusion rules and data rejection rules, wherein the sector exclusion rules include exclusion of sectors affected by operating head of surrounding hydroelectric generating sets and inlet pressure fluctuations of the volute; the data elimination rule comprises elimination of data caused by fault reasons and power limit reasons; eliminating data caused by sensor instability, precision problem deviation and signal noise interference; and/or eliminating data of active power, flow, unit rotating speed, guide vane opening, volute inlet pressure, upstream water level, downstream water level and power factor which are not in the normal power generation state of the hydroelectric generating set.
In a second aspect, an embodiment of the present application provides a hydroelectric generating set absolute efficiency test system, including:
the acquisition module is used for acquiring the original data acquired by the portable SCADA system acquisition device for the hydroelectric generating set;
the screening module is used for screening the original data according to a preset screening rule;
and the analysis module is used for analyzing the screened data and fitting an actually measured absolute efficiency curve.
Compared with the related art, the method and the system for testing the absolute efficiency of the hydroelectric generating set have the advantages of being low in economic cost, strong in operability of the method, small in error of data reading and calculation results, and capable of quickly and conveniently testing the absolute efficiency of the whole hydroelectric generating set.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of a method for testing absolute efficiency of a hydroelectric generating set according to an embodiment of the present application;
FIG. 2 is a schematic representation of a measured absolute efficiency curve according to an embodiment of the present application;
FIG. 3 is a representation of a comparison measured absolute efficiency curve and a design absolute efficiency curve according to an embodiment of the present application;
fig. 4 is a block diagram of a structure of a system for testing absolute efficiency of a hydroelectric generating set according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Reference herein to "a plurality" means greater than or equal to two. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
The inventor of the application finds that the conventional hydroelectric generating set absolute efficiency testing method has the defects of large data reading error, more subjective interference, insufficient intelligence in data calculation, long testing period, incapability of automatically generating an absolute efficiency curve and the like.
Therefore, an embodiment of the present application provides a method for testing absolute efficiency of a hydroelectric generating set, where fig. 1 is a flowchart of the method for testing absolute efficiency of a hydroelectric generating set according to the embodiment of the present application, and as shown in fig. 1, the method includes the following steps:
s101: acquiring original data acquired by a portable SCADA system acquisition device for the hydroelectric generating set;
s102: screening the original data according to a preset screening rule;
s103: and analyzing the screened data, and fitting an actually measured absolute efficiency curve.
According to the content, in the embodiment of the application, the portable SCADA system collector not only collects data of the hydroelectric generating set, but also screens the collected data, so that subjective interference can be avoided, errors can be reduced, and the final test result can be improved; moreover, the method and the device can automatically generate the actually measured absolute efficiency curve, and data calculation is intelligent; in addition, the reading and calculation of data are faster, and the test period can be shortened.
It should be noted that, in order to make the measurement operation of the embodiment of the present application more convenient, the above-mentioned portable SCADA system collector is preferably an improved mobile portable SCADA system collector.
In some embodiments, before step S101, preparation is performed, for example, determining a hydroelectric generating set of the tested hydropower station; checking whether an SCADA system collector of the hydroelectric generating set and sensors of all measuring points operate normally; the active power and volute inlet pressure are then ratioed to determine the slope and intercept of each of the sensors to ensure accurate measurements. It should be noted that the range of the volute inlet pressure may be adjusted appropriately according to the actual conditions of the hydroelectric generating set being measured.
In some embodiments, the raw data collected by the portable SCADA system collector includes active power, flow, unit rotation speed, guide vane opening, volute inlet pressure, upstream water level, downstream water level, and power factor of the hydroelectric generating set, wherein the power can be measured by a generator power measurement system, the flow can be measured by an ultrasonic flow test system, and the volute inlet pressure can be measured by a pressure transmitter. In addition, the embodiment of the application also confirms the unification of the acquired data in time and then screens the data.
In some embodiments, the screening rules of step S102 include sector exclusion rules and data culling rules, for example, the sector exclusion rules include excluding sectors affected by the operating head of the surrounding hydroelectric generating set and the pressure fluctuation at the inlet of the volute. The data elimination rule comprises elimination of data caused by fault reasons and power limit reasons; further, data caused by sensor instability, accuracy problem deviation and signal noise interference are eliminated; further, data of active power, flow, unit rotating speed, guide vane opening, volute inlet pressure, upstream water level, downstream water level and power factor which are not in the normal power generation state of the hydroelectric generating set are also rejected.
In some embodiments, step S103 analyzes the screened data, and a polynomial under the least square rule is used to fit the measured absolute efficiency curve, where the polynomial fitting is to spread and fit all observation points in a small analysis area including a plurality of analysis grid points by using a polynomial to obtain an objective analysis field of the observation data, where the spreading coefficient is determined by using a least square method, and the content can be implemented by the prior art, and those skilled in the art can know that the detailed description is omitted here. It should be noted that the actually measured absolute efficiency curve is a relation curve between the absolute efficiency of the hydroelectric generating set at the average operating head and the output (i.e., power).
In some embodiments, after step S103, the method for testing the absolute efficiency of the hydroelectric generating set according to the embodiment of the present application further includes: the actually measured absolute efficiency curve is compared with the designed absolute efficiency curve to obtain the difference, and the reduction condition of the absolute efficiency can be compared with the designed absolute efficiency curve provided by a manufacturer. Optionally, an original data table of the measured absolute efficiency test is also automatically derived.
In some embodiments, the uncertainty of the ultrasonic flow testing system is ensured to be not more than +/-0.5%, the absolute uncertainty of the pressure transmitter is not more than +/-0.1 m, and the uncertainty of the generator power measuring system is not more than +/-0.54%; further, the deviation of the working water head is controlled to be not more than +/-1%, wherein the water head is an energy unit, the energy of unit weight water at any section is equal to the specific energy (the energy of the unit weight water) divided by the gravity acceleration, and the unit is m; the total uncertainty of the absolute efficiency of the efficiency test is not more than +/-0.75%, so that the finally obtained measurement result has higher precision compared with the original manual data reading. Furthermore, according to the measurement result obtained by the embodiment of the application, relevant suggestions can be provided for economic operation and optimized operation modes of the hydroelectric generating set.
According to the method for testing the absolute efficiency of the hydroelectric generating set, the absolute efficiency of the hydroelectric generating set of the whole hydropower station can be tested quickly, accurately and conveniently, and the defects that an original absolute efficiency test is not intelligent enough, large in workload and error, and cannot automatically generate an absolute efficiency curve and an original data table are overcome.
For the sake of clear explanation of the present application, the following examples show a complete flow of a method for testing absolute efficiency of a hydroelectric generating set, and specifically include the following steps:
the method comprises the following steps: the preparation work comprises the steps of determining a hydroelectric generating set of the tested hydropower station, and checking whether devices such as a portable SCADA system collector and related sensors run normally or not;
in order to better improve the accuracy of the absolute efficiency test of the hydroelectric generating set, the selection of the tested hydroelectric generating set follows the following principle: 1. the tested hydroelectric generating set is debugged and stably operated; 2. the runner blade is intact, the flow passage is normal and has no obvious defects; 3. the upstream and downstream water levels of the tested hydroelectric generating set are stable during operation, and the deviation value is within a preset threshold value; 4. other parts of the hydroelectric generating set are intact and operate normally.
The method comprises the steps of verifying that the collection time of active power, flow, unit rotating speed, guide vane opening, volute inlet pressure, upstream water level, downstream water level and power factor is uniform, calibrating each index, and simultaneously checking whether each sensor normally operates.
Step two: after the preparation work is finished, the active power, the flow, the unit rotating speed, the guide vane opening degree, the volute inlet pressure, the upstream water level, the downstream water level and the power factor of the hydroelectric generating set are collected by utilizing the portable SCADA system collector,
step three: acquiring collected original data, and screening out the data, specifically, eliminating sectors affected by the operating water head of a surrounding hydroelectric generating set and the inlet pressure fluctuation of a volute; removing data caused by fault reasons and power limit reasons; eliminating data caused by sensor instability, precision problem deviation and signal noise interference; and eliminating data of active power, flow, unit rotating speed, guide vane opening, volute inlet pressure, upstream water level, downstream water level and power factor which are not in the normal power generation state of the hydroelectric generating set.
Step four: and analyzing the screened data, and fitting an actually measured absolute efficiency curve by adopting a polynomial under the least square rule, wherein the absolute efficiency curve is a relation curve of the absolute efficiency of the hydroelectric generating set under the average working head and the output (namely the power). Then, the raw data table for the absolute efficiency test is automatically derived.
Optionally, in the analysis process, the active power and the volute inlet pressure data are processed in a partition manner; the operating water head range is divided into continuous intervals with 1% deviation as the center, and the power and the volute inlet pressure adopt an absolute fluctuation range control mode; the method comprises the steps that data are collected in each load interval of active power, flow, unit rotating speed, guide vane opening, volute inlet pressure, upstream water level, downstream water level and power factor for at least 5min of sampling duration, at least 10 load working condition collection points are arranged, and the total collection interval at least contains 50min of sampling data.
Step five: and comparing the actual measurement absolute efficiency curve with the design absolute efficiency curve to obtain a difference, and comparing the reduction condition of the absolute efficiency of the design absolute efficiency curve provided by a manufacturer.
Step six: the uncertainty of an ultrasonic flow testing system is not more than +/-0.5%, the absolute uncertainty of a pressure transmitter is not more than +/-0.1 m, and the uncertainty of a generator power measuring system is not more than +/-0.54%; furthermore, the deviation of the working water head is controlled to be not more than +/-1%, the total uncertainty of the absolute efficiency of the effect test is not more than +/-0.75%, and therefore the finally obtained measurement result is higher in precision compared with the original manual data reading. Therefore, according to the measurement result obtained by the embodiment of the application, relevant suggestions can be provided for economic operation and optimized operation modes of the hydroelectric generating set.
Based on the above contents, in the embodiment of the application, a binomial equation fitting curve is adopted for testing the absolute efficiency of a #1 hydroelectric generating set of a certain hydropower station in Yunnan, and the binomial equation fitting curve is obtained by applying the actually measured efficiency to the absolute efficiency distribution under different loads of the hydroelectric generating set. In the test, the time for completing the test, screening and rejecting data and generating an absolute efficiency curve by a single water head is 2 h; and simultaneously, automatically exporting a calculation table and storing data. For example, the output (i.e., power) and absolute efficiency of a hydroelectric generating set are shown in table 1, respectively:
table 1 shows the values of the output and the absolute efficiency of a hydroelectric generating set
In the embodiment of the application, an actually measured absolute efficiency curve (a capillary head is 82.09m, which refers to a water level height difference between the upstream and the downstream of a hydropower station) can be fitted according to data in table 1, fig. 2 is an expression schematic diagram of the actually measured absolute efficiency curve according to the embodiment of the application, as shown in fig. 2, a trend of a relation curve between the output of a hydroelectric generating set and the actually measured absolute efficiency is obvious, an inflection point (highest efficiency) can be found to appear, and the actual situation of the hydroelectric generating set is met.
Further, comparing the measured absolute efficiency curve with the designed absolute efficiency curve, and analyzing the difference, wherein the measured absolute efficiency curve is a fitting curve selected according to the principle of minimum deviation square sum, and the test process meets the standard requirements of GB/T15468-. Fig. 3 is an expression schematic diagram comparing an actually measured absolute efficiency curve with a designed absolute efficiency curve according to an embodiment of the present application, and as shown in fig. 3, the actual absolute efficiency curve of a fitted hydro-turbine unit highly coincides with the trend of the designed absolute efficiency curve, the actually measured absolute efficiency is reduced less, the #1 hydro-turbine unit efficiency is overall stable, the phenomenon of serious efficiency reduction does not occur, the absolute efficiency test and curve fitting can be rapidly and conveniently performed on the hydro-turbine unit, and the effect is significant.
In summary, compared with the related art, the embodiment of the present application has the following advantages:
(1) the portable SCADA system collector is used for testing the absolute efficiency of the hydroelectric generating set, and convenience, precision, intelligence and operability of testing the absolute efficiency of the hydroelectric generating set are improved.
(2) The rapidity of the test is greatly improved, and the time investment caused by manual screening, data inputting, data arrangement and curve fitting is reduced.
(3) The working efficiency of personnel engaged in related detection industries is greatly improved, and the business trip time and the labor cost are greatly reduced.
(4) And related suggestions and technical guidance are provided for the economic operation and the optimized operation mode of the hydroelectric generating set, and the economic operation benefit of the hydropower station is improved.
The embodiment of the present application further provides a hydroelectric generating set absolute efficiency testing system, and fig. 4 is a structural block diagram of the hydroelectric generating set absolute efficiency testing system according to the embodiment of the present application, and as shown in fig. 4, the system includes an obtaining module 1, a screening module 2, and an analyzing module 3.
Specifically, the acquisition module 1 is used for acquiring original data acquired by the portable SCADA system acquisition device for the hydroelectric generating set; the screening module 2 is used for screening the original data according to a preset screening rule; and the analysis module 3 is used for analyzing the screened data and fitting an actually measured absolute efficiency curve.
The above modules may be functional modules or program modules, and may be implemented by software or hardware. For a module implemented by hardware, the modules may be located in the same processor; or the modules can be respectively positioned in different processors in any combination.
For specific examples in this embodiment, reference may be made to the examples described in the above embodiments and optional implementation manners, and details of this embodiment are not described herein again.
It should be understood by those skilled in the art that various features of the above-described embodiments can be combined in any combination, and for the sake of brevity, all possible combinations of features in the above-described embodiments are not described in detail, but rather, all combinations of features which are not inconsistent with each other should be construed as being within the scope of the present disclosure.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for testing absolute efficiency of a hydroelectric generating set is characterized by comprising the following steps:
acquiring original data acquired by a portable SCADA system acquisition device for the hydroelectric generating set;
screening the original data according to a preset screening rule;
and analyzing the screened data, and fitting an actually measured absolute efficiency curve.
2. The method of claim 1, wherein after said fitting a measured absolute efficiency curve, said method further comprises:
comparing the actually measured absolute efficiency curve with a designed absolute efficiency curve to obtain a difference;
and/or the presence of a gas in the gas,
and automatically deriving an original data table of the actual measurement absolute efficiency test.
3. The method of claim 1, wherein said fitting a measured absolute efficiency curve comprises:
and fitting a polynomial under the least square rule to obtain an actually measured absolute efficiency curve.
4. The method of claim 1, wherein prior to said obtaining raw data collected by the portable SCADA system collector for the hydroelectric generating set, the method further comprises:
and checking whether the collectors of the SCADA system and the sensors of the measuring points normally operate or not.
5. The method of claim 4, wherein after said checking whether the SCADA system collector and the site sensors are operating properly, the method further comprises:
and calibrating the active power and the volute inlet pressure, and determining the slope and intercept of each sensor.
6. The method of claim 1, wherein the raw data includes active power, flow, unit speed, vane opening, volute inlet pressure, upstream water level, downstream water level, and power factor of the hydroelectric generating set.
7. The method of claim 6, wherein the raw data is measured in a manner comprising:
measuring the power by a generator power measurement system, wherein an uncertainty of the generator power measurement system is no greater than ± 0.54%;
measuring the flow through an ultrasonic flow test system, wherein the uncertainty of the ultrasonic flow test system is not more than +/-0.5%;
measuring the volute inlet pressure by a pressure transmitter, wherein the absolute uncertainty of the pressure transmitter is no greater than ± 0.1 m.
8. The method of claim 7, further comprising:
the deviation of the working water head is controlled to be not more than +/-1%, and the total uncertainty of the test absolute efficiency is not more than +/-0.75%.
9. The method of claim 1, wherein the screening rules include sector exclusion rules and data culling rules, wherein the sector exclusion rules include excluding sectors affected by surrounding hydroelectric generating set operating head and volute inlet pressure fluctuations;
the data elimination rule comprises elimination of data caused by fault reasons and power limit reasons; eliminating data caused by sensor instability, precision problem deviation and signal noise interference; and/or eliminating data of active power, flow, unit rotating speed, guide vane opening, volute inlet pressure, upstream water level, downstream water level and power factor which are not in the normal power generation state of the hydroelectric generating set.
10. The utility model provides a hydroelectric generating set absolute efficiency test system which characterized in that includes:
the acquisition module is used for acquiring the original data acquired by the portable SCADA system acquisition device for the hydroelectric generating set;
the screening module is used for screening the original data according to a preset screening rule;
and the analysis module is used for analyzing the screened data and fitting an actually measured absolute efficiency curve.
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| CN117543589A (en) * | 2024-01-10 | 2024-02-09 | 四川能投云电科技有限公司 | Scheduling method of cascade hydropower safety centralized control system |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10214909A1 (en) * | 2001-04-04 | 2003-02-27 | Siegfried Jank | Method for optimizing power station output e.g. for water turbine installation, by varying ratio of gear coupling between turbine and generator |
| US20090187355A1 (en) * | 2008-01-18 | 2009-07-23 | Earlywine Kenneth G | Force beam elevator and method of use |
| EP2469257A1 (en) * | 2010-12-23 | 2012-06-27 | Openhydro IP Limited | A hydroelectric turbine testing method |
| US20130090774A1 (en) * | 2011-10-06 | 2013-04-11 | Avista Corporation | Real-Time Optimization of Hydropower Generation Facilities |
| US20140365187A1 (en) * | 2013-06-05 | 2014-12-11 | WindLogics Inc. | Wind farm prediction of potential and actual power generation |
| CN104242462A (en) * | 2014-10-08 | 2014-12-24 | 中国南方电网有限责任公司 | WAMS (wide area measurement system) and SCADA (supervisory control and data acquisition) integrated data based grid forced oscillation source positioning method |
| CN105067267A (en) * | 2015-07-29 | 2015-11-18 | 北京中水科水电科技开发有限公司 | Method for storing hydropower unit field test and state monitoring data |
| CN105723291A (en) * | 2013-09-10 | 2016-06-29 | 东南水务公司 | Reservoir control systems and methods |
| US20160304379A1 (en) * | 2015-04-20 | 2016-10-20 | ClearCove Systems, Inc. | Method to provide an optimized organic load to a downstream-wastewater treatment process |
| CN106368908A (en) * | 2016-08-30 | 2017-02-01 | 华电电力科学研究院 | Wind turbine generator set power curve testing method based on SCADA (supervisory control and data acquisition) system |
| CN108105016A (en) * | 2017-09-08 | 2018-06-01 | 张大禹 | Regenerative resource engine |
| CN108194249A (en) * | 2018-01-19 | 2018-06-22 | 湖南省湘电试验研究院有限公司 | A kind of turbine-generator units guide vane leak quantity measuring method and system |
| CN108374747A (en) * | 2018-02-01 | 2018-08-07 | 山东诺源动力设备有限公司 | A kind of water-storage control method of allotment grid-connected power generation system |
| CN109272245A (en) * | 2018-09-30 | 2019-01-25 | 国电大渡河流域水电开发有限公司 | The real-time auto-allocation method of step power station floodgate aperture and system |
| CN109404202A (en) * | 2018-10-09 | 2019-03-01 | 西华大学 | A kind of optimal joint optimization method of tubular turbine |
| KR102069997B1 (en) * | 2019-06-24 | 2020-01-23 | 선호수 | Hydraulic turbine efficiency measurement system and method thereof |
| CN111522858A (en) * | 2020-03-16 | 2020-08-11 | 国家电网有限公司 | Multi-dimensional state vector-based pumping unit performance degradation early warning method |
| CN111666458A (en) * | 2020-06-22 | 2020-09-15 | 中国船级社质量认证公司 | Fitting method for power curve of wind turbine generator |
| CN211777784U (en) * | 2019-06-03 | 2020-10-27 | 广东粤电长潭发电有限责任公司 | Unit efficiency monitoring device |
| US20200355067A1 (en) * | 2019-05-08 | 2020-11-12 | GEOSCIENCE Support Services, Inc. | Wellfield management systems and methods |
| CN112483427A (en) * | 2020-11-24 | 2021-03-12 | 浙江中控技术股份有限公司 | Efficient centrifugal pump energy efficiency management method and system |
| CN113446146A (en) * | 2021-06-18 | 2021-09-28 | 贵州北盘江电力股份有限公司光照分公司 | Online water turbine efficiency test method |
-
2021
- 2021-11-24 CN CN202111405321.6A patent/CN114165382B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10214909A1 (en) * | 2001-04-04 | 2003-02-27 | Siegfried Jank | Method for optimizing power station output e.g. for water turbine installation, by varying ratio of gear coupling between turbine and generator |
| US20090187355A1 (en) * | 2008-01-18 | 2009-07-23 | Earlywine Kenneth G | Force beam elevator and method of use |
| EP2469257A1 (en) * | 2010-12-23 | 2012-06-27 | Openhydro IP Limited | A hydroelectric turbine testing method |
| US20130090774A1 (en) * | 2011-10-06 | 2013-04-11 | Avista Corporation | Real-Time Optimization of Hydropower Generation Facilities |
| US20140365187A1 (en) * | 2013-06-05 | 2014-12-11 | WindLogics Inc. | Wind farm prediction of potential and actual power generation |
| CN105723291A (en) * | 2013-09-10 | 2016-06-29 | 东南水务公司 | Reservoir control systems and methods |
| CN104242462A (en) * | 2014-10-08 | 2014-12-24 | 中国南方电网有限责任公司 | WAMS (wide area measurement system) and SCADA (supervisory control and data acquisition) integrated data based grid forced oscillation source positioning method |
| US20160304379A1 (en) * | 2015-04-20 | 2016-10-20 | ClearCove Systems, Inc. | Method to provide an optimized organic load to a downstream-wastewater treatment process |
| CN105067267A (en) * | 2015-07-29 | 2015-11-18 | 北京中水科水电科技开发有限公司 | Method for storing hydropower unit field test and state monitoring data |
| CN106368908A (en) * | 2016-08-30 | 2017-02-01 | 华电电力科学研究院 | Wind turbine generator set power curve testing method based on SCADA (supervisory control and data acquisition) system |
| CN108105016A (en) * | 2017-09-08 | 2018-06-01 | 张大禹 | Regenerative resource engine |
| CN108194249A (en) * | 2018-01-19 | 2018-06-22 | 湖南省湘电试验研究院有限公司 | A kind of turbine-generator units guide vane leak quantity measuring method and system |
| CN108374747A (en) * | 2018-02-01 | 2018-08-07 | 山东诺源动力设备有限公司 | A kind of water-storage control method of allotment grid-connected power generation system |
| CN109272245A (en) * | 2018-09-30 | 2019-01-25 | 国电大渡河流域水电开发有限公司 | The real-time auto-allocation method of step power station floodgate aperture and system |
| CN109404202A (en) * | 2018-10-09 | 2019-03-01 | 西华大学 | A kind of optimal joint optimization method of tubular turbine |
| US20200355067A1 (en) * | 2019-05-08 | 2020-11-12 | GEOSCIENCE Support Services, Inc. | Wellfield management systems and methods |
| CN211777784U (en) * | 2019-06-03 | 2020-10-27 | 广东粤电长潭发电有限责任公司 | Unit efficiency monitoring device |
| KR102069997B1 (en) * | 2019-06-24 | 2020-01-23 | 선호수 | Hydraulic turbine efficiency measurement system and method thereof |
| CN111522858A (en) * | 2020-03-16 | 2020-08-11 | 国家电网有限公司 | Multi-dimensional state vector-based pumping unit performance degradation early warning method |
| CN111666458A (en) * | 2020-06-22 | 2020-09-15 | 中国船级社质量认证公司 | Fitting method for power curve of wind turbine generator |
| CN112483427A (en) * | 2020-11-24 | 2021-03-12 | 浙江中控技术股份有限公司 | Efficient centrifugal pump energy efficiency management method and system |
| CN113446146A (en) * | 2021-06-18 | 2021-09-28 | 贵州北盘江电力股份有限公司光照分公司 | Online water turbine efficiency test method |
Non-Patent Citations (3)
| Title |
|---|
| 余兴林;: "基于Citect的水电站综合自动化计算机监控系统设计", 机电信息, no. 05 * |
| 王浩;文习波;汤浩;: "官地水电站水轮机效率试验研究", 人民长江, no. 18 * |
| 王颖;肖剑;: "小水电机组运行管理的优化研究", 大众用电, no. 12 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117543589A (en) * | 2024-01-10 | 2024-02-09 | 四川能投云电科技有限公司 | Scheduling method of cascade hydropower safety centralized control system |
| CN117543589B (en) * | 2024-01-10 | 2024-05-07 | 四川能投云电科技有限公司 | Scheduling method of cascade hydropower safety centralized control system |
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