CN114165382B - 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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- CN114165382B CN114165382B CN202111405321.6A CN202111405321A CN114165382B CN 114165382 B CN114165382 B CN 114165382B CN 202111405321 A CN202111405321 A CN 202111405321A CN 114165382 B CN114165382 B CN 114165382B
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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
Abstract
The application relates to a method and a system for testing absolute efficiency of a hydroelectric generating set, which belong to the technical field of hydroelectric generation, and the method comprises the following steps: acquiring original data acquired by a portable SCADA system acquisition device on a hydroelectric generating set; screening the original data according to a preset screening rule; and analyzing the screened data, and fitting an actual measurement absolute efficiency curve. The actually measured absolute efficiency curve can be further compared with the designed absolute efficiency curve to obtain a difference; and automatically deriving an original data table of the measured absolute efficiency test. According to the method, the portable SCADA system collector is utilized to test the absolute efficiency of the hydroelectric generating set, the convenience, the accuracy, the intelligence and the operability of the absolute efficiency test of the hydroelectric generating set are improved, the operability of the method is high, the error of data reading is small, the test result is accurate, the test process is quick and convenient, and the efficiency and the intelligence of the test are improved.
Description
Technical Field
The application relates to the technical field of hydroelectric 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 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 of a certain difference between the model test and the true machine test, the design efficiency provided by the hydroelectric generating set manufacturer is different from the efficiency generated when the hydroelectric generating set actually operates. When the absolute efficiency of the hydroelectric generating set is tested, various data required by measurement and calculation are conventionally and conventionally measured, the data monitored by part of the power plant are read, the data are integrated, and the actual measurement efficiency under each working condition is obtained through manual calculation. However, the method is sensitive to human subjective factors, such as the power of a machine set and the inlet pressure of a volute, and can be read only manually frequently, and large subjective errors exist, so that large deviation is generated in test measurement data, and even the phenomenon that the calculation efficiency is obviously higher than the design efficiency can occur.
At present, the absolute efficiency of the hydroelectric generating set is tested according to GB/T15468-2006, GB/T8564-2003 and GB/T20043-2005 standards in China, and the method only has certain requirements on a test method and sensor arrangement, but cannot solve the practical problems of large data reading error, more subjective interference and insufficient intelligence of data calculation. The absolute efficiency test of the traditional conventional hydroelectric generating set has the defects, so that the absolute efficiency test of the whole hydroelectric generating set has larger defects.
Disclosure of Invention
The embodiment of the application provides a method and a system for testing absolute efficiency of a hydroelectric generating set, which are used for at least solving the problems of larger data reading error, more subjective interference and insufficient intelligence of data calculation 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 on a hydroelectric generating set; screening the original data according to a preset screening rule; and analyzing the screened data, and fitting an actual measurement absolute efficiency curve.
In some of these embodiments, after said fitting the 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 the measured absolute efficiency curve comprises: and fitting the measured absolute efficiency curve by using a polynomial under the least square method rule.
In some embodiments, before the acquiring the raw data acquired by the portable SCADA system acquisition unit for the hydroelectric generating set, the method further comprises: and checking whether the SCADA system collector and the sensors of all the measuring points operate normally or not.
In some of these embodiments, after said checking if the SCADA system collector and each of the test point 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.
In some of these embodiments, the raw data includes active power of the hydroelectric generating set, flow rate, set rotational speed, vane opening, volute inlet pressure, upstream water level, downstream water level, and power factor.
In some embodiments, the measurement mode of the raw data includes: measuring the power by a generator power measurement system, wherein the uncertainty of the generator power measurement system is no greater than ± 0.54%; measuring the flow by an ultrasonic flow test system, wherein the uncertainty of the ultrasonic flow test system is not greater than + -0.5%; the volute inlet pressure is measured 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 working water head deviation is controlled to be not more than +/-1%, and the total uncertainty of the absolute efficiency of the test is not more than +/-0.75%.
In some of these embodiments, the screening rules include sector exclusion rules and data rejection rules, wherein the sector exclusion rules include excluding sectors affected by surrounding hydro-power unit operating head and volute inlet pressure fluctuations; the data eliminating rule comprises eliminating data caused by failure reasons and limit electricity reasons; eliminating data caused by unstable sensor, 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 unit.
In a second aspect, embodiments of the present application provide a hydroelectric generating set absolute efficiency testing system, including:
the acquisition module is used for acquiring the original data acquired by the portable SCADA system acquisition device on 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 out an actual measurement 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, high in operability, small in errors of data reading and calculation results, and capable of rapidly 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 embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a flow chart of a method of testing absolute efficiency of a hydroelectric generating set according to an embodiment of the present application;
FIG. 2 is a representation of a measured absolute efficiency curve according to an embodiment of the present application;
FIG. 3 is a representation of a comparison of measured absolute efficiency curves and designed absolute efficiency curves according to an embodiment of the present application;
fig. 4 is a block diagram of a hydroelectric generating set absolute efficiency testing system 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 is described and illustrated below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on the embodiments provided herein, are intended to be within the scope of the present application. Moreover, it should be appreciated that while such a development effort might be complex and lengthy, it would nevertheless be a routine undertaking of design, fabrication, or manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as having the benefit of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases 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. It is to be expressly and implicitly understood by those of ordinary skill in the art that the embodiments described herein can be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar terms herein do not denote a limitation of quantity, but rather denote the singular or plural. The terms "comprising," "including," "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means greater than or equal to two. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., "a and/or B" may mean: a exists alone, A and B exist together, and B exists alone. The terms "first," "second," "third," and the like, as used herein, are merely distinguishing between similar objects and not representing a particular ordering of objects.
The inventor of the application finds that the traditional hydroelectric generating set absolute efficiency testing method has the defects of large data reading error, more subjective interference, insufficient intelligence of data calculation, long testing period, incapability of automatically generating an absolute efficiency curve and the like.
Accordingly, an embodiment of the present application proposes a method for testing absolute efficiency of a hydroelectric generating set, and fig. 1 is a flowchart of a method for testing absolute efficiency of a hydroelectric generating set according to an embodiment of the present application, as shown in fig. 1, the method includes the following steps:
s101: acquiring original data acquired by a portable SCADA system acquisition device on a hydroelectric generating set;
s102: screening the original data according to a preset screening rule;
s103: and analyzing the screened data, and fitting an actual measurement absolute efficiency curve.
According to the content, in the embodiment of the application, the portable SCADA system collector collects data of the hydroelectric generating set and screens the collected data, so that subjective interference can be avoided, errors are reduced, and a final test result is improved; in addition, the embodiment of the application can automatically generate an actual measurement absolute efficiency curve, and the data calculation is intelligent; in addition, the data is read and calculated more quickly, 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 portable SCADA system collector described above is preferably an improved mobile portable SCADA system collector.
In some of these embodiments, preparation is also performed prior to step S101, for example, determining the hydroelectric generating set of the hydropower station under test; checking whether the SCADA system collector of the hydroelectric generating set and the sensors of all measuring points normally operate or not; and then, calibrating the active power and the volute inlet pressure, and determining the slope and intercept of each sensor to ensure that the measured value is accurate. It should be noted that the range of the volute inlet pressure can be properly adjusted according to the actual situation of the measured hydroelectric generating set.
In some of these embodiments, the raw data collected by the portable SCADA system collector includes the active power of the hydroelectric generating set, the flow rate, the set rotational speed, the vane opening, the volute inlet pressure, the upstream water level, the downstream water level, and the power factor, wherein the power is measurable by a generator power measurement system, the flow rate is measurable by an ultrasonic flow measurement system, and the volute inlet pressure is measurable 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 of these embodiments, the screening rules of step S102 include sector exclusion rules and data rejection rules, for example, the sector exclusion rules include excluding sectors affected by surrounding hydro-power unit operating head and volute inlet pressure fluctuations. The data rejection rules comprise rejecting data brought about by failure reasons and limit reasons; further, data caused by unstable sensor, precision problem deviation and signal noise interference are also removed; furthermore, the 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 unit are also removed.
In some embodiments, step S103 analyzes the screened data, and fits the measured absolute efficiency curve by using a polynomial under the least square rule, where the polynomial fit is that all observation points in a small analysis area including a plurality of analysis lattice points are fit by using a polynomial expansion, so as to obtain an objective analysis field of the observed data, where the expansion coefficient is determined by using the least square fit, which can be realized by a person skilled in the art, and therefore, this is not described in detail herein. The measured absolute efficiency curve is a relation curve between absolute efficiency and output (i.e., power) of the hydroelectric generating set at the average working head.
In some of these embodiments, after step S103, the hydropower unit absolute efficiency testing method of the embodiment of the application further includes: and comparing the actually measured absolute efficiency curve with the designed absolute efficiency curve to obtain a difference, and comparing the designed absolute efficiency curve provided by a manufacturer with the absolute efficiency reduction condition. Optionally, the original data table of the measured absolute efficiency test is also automatically derived.
In some of these embodiments, the uncertainty of the ultrasonic flow measurement system is guaranteed to be no more than + -0.5%, the absolute uncertainty of the pressure transmitter is no more than + -0.1 m, and the uncertainty of the generator power measurement system is no 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, namely the energy of water with unit weight at any section, which is equal to the specific energy (the energy of water with unit weight) divided by the gravitational acceleration, and the unit is m; the total uncertainty of the absolute efficiency of the effective test is not more than +/-0.75%, so that the finally obtained measurement result has higher precision compared with the traditional manual data reading. Furthermore, according to the measurement results obtained by the embodiment of the application, related suggestions can be provided for economic operation and optimal operation modes of the hydroelectric generating set.
According to the above, the absolute efficiency testing method of the hydroelectric generating set can quickly, accurately and conveniently test the absolute efficiency of the hydroelectric generating set of the whole hydropower station, and overcomes the defects that the original absolute efficiency test is not intelligent enough, large in workload, large in error, incapable of automatically generating an absolute efficiency curve, an original data table and the like.
For the sake of clarity of the description of the present application, the following illustrates a complete flow of a method for testing absolute efficiency of a hydroelectric generating set, specifically including the following steps:
step one: the preparation work comprises the steps of determining a hydroelectric generating set of a hydropower station to be tested, and checking whether devices such as a portable SCADA system collector, related sensors and the like normally operate 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 runner is normal, and no obvious defect exists; 3. when the tested hydroelectric generating set operates, the upstream water level and the downstream water level are stable, and the deviation is not excessively large, namely the deviation value is within a preset threshold value; 4. other parts of the hydroelectric generating set are intact and normally operate.
And 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 unified, calibrating each index, and checking whether each sensor operates normally.
Step two: after the preparation work is finished, the portable SCADA system collector is utilized to collect the active power, flow, unit rotating speed, guide vane opening, volute inlet pressure, upstream water level, downstream water level and power factor of the hydroelectric generating set,
step three: acquiring collected original data, screening out the data, and specifically, eliminating sectors influenced by the running water head of a surrounding hydroelectric generating set and the fluctuation of the volute inlet pressure; eliminating data caused by failure reasons and electricity limiting reasons; eliminating data caused by unstable sensor, 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 actual measurement absolute efficiency curve by adopting a polynomial under a least square method rule, wherein the absolute efficiency curve is a relation curve of absolute efficiency and output (namely power) of the hydroelectric generating set under an average working water head. Then, the original data table of the absolute efficiency test is automatically derived.
Optionally, in the analysis process, carrying out partition processing on the active power and the volute inlet pressure data; the operating water head range is divided into continuous intervals taking 1% deviation as a center, and the power and the volute inlet pressure adopt an absolute fluctuation range control mode; the data 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 are collected for at least 5min, at least 10 load working condition collecting points exist, and the total collecting interval at least contains 50min of sampling data.
Step five: and comparing the actually measured absolute efficiency curve with the designed absolute efficiency curve to obtain a difference, and comparing the designed absolute efficiency curve provided by a manufacturer with the absolute efficiency reduction condition.
Step six: the uncertainty of the ultrasonic flow test 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 measurement system is not more than +/-0.54%; furthermore, the deviation of the working water head is controlled to be not more than +/-1%, and the total uncertainty of the effective test absolute efficiency is not more than +/-0.75%, so that the finally obtained measuring result has higher accuracy compared with the traditional manual data reading. Therefore, according to the measurement results obtained by the embodiment of the application, related suggestions can be provided for economic operation and optimal operation modes of the hydroelectric generating set.
Based on the above, the embodiment of the application tests absolute efficiency of a hydropower station # 1 hydropower station in Yunnan, and adopts a binomial equation fitting curve, which is obtained by applying actual measurement efficiency to absolute efficiency distribution under different hydropower station loads. In the test, the time for completing the test, screening and removing data and generating an absolute efficiency curve by a single water head is 2 hours; while automatically exporting the calculation form and storing the data. For example, the output (i.e., power) and absolute efficiency of the hydroelectric generating set are shown in table 1:
table 1 shows the values of the output and absolute efficiency of the hydroelectric generating set
According to the embodiment of the application, an actually measured absolute efficiency curve (Mao Shuitou is 82.09m, mao Shuitou refers to a water level elevation difference between upstream and downstream of a hydropower station) can be fitted according to the 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, and as shown in fig. 2, the trend of a relation curve of the output of the hydropower unit and the actually measured absolute efficiency is obvious, and an inflection point (the position with highest efficiency) can be found to appear, so that the actual situation of the hydropower unit is met.
Further, comparing the actually measured absolute efficiency curve with the designed absolute efficiency curve, and analyzing the difference, wherein the actually measured absolute efficiency curve is a fitting curve selected according to the principle of least square sum of deviation, and the testing process meets the standard requirements of GB/T15468-2006, GB/T8564-2003 and GB/T20043-2005. Fig. 3 is an expression schematic diagram of a comparison measured absolute efficiency curve and a designed absolute efficiency curve according to an embodiment of the present application, as shown in fig. 3, the fitted actual absolute efficiency curve of the hydroelectric generating set is highly consistent with the trend of the designed absolute efficiency curve, the measured absolute efficiency decrease is smaller, the overall efficiency of the #1 hydroelectric generating set is stable, the phenomenon of serious efficiency decrease does not occur, the absolute efficiency test and curve fitting can be rapidly and conveniently performed on the hydroelectric generating set, and the effect is remarkable.
In summary, compared with the related art, the embodiment of the present application has the following advantages:
(1) The portable SCADA system collector is utilized to test the absolute efficiency of the hydroelectric generating set, so that the convenience, accuracy, intelligence and operability of the absolute efficiency test of the hydroelectric generating set are improved.
(2) The test rapidity is greatly improved, and the time investment caused by manual screening, inputting and 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, so that the economic operation benefit of the hydropower station is improved.
The embodiment of the application also provides a hydroelectric generating set absolute efficiency test system, and fig. 4 is a structural block diagram of the hydroelectric generating set absolute efficiency test system according to the embodiment of the application, as shown in fig. 4, and the system comprises an acquisition module 1, a screening module 2 and an analysis module 3.
Specifically, the acquisition module 1 is used for acquiring original data acquired by the portable SCADA system acquisition device on the hydroelectric generating set; the screening module 2 is used for screening the original data according to preset screening rules; the analysis module 3 is used for analyzing the screened data and fitting out an actual measurement absolute efficiency curve.
The above-described respective modules may be functional modules or program modules, and may be implemented by software or hardware. For modules implemented in hardware, the various modules described above may be located in the same processor; or the above modules may be located in different processors in any combination.
Specific examples in this embodiment may refer to examples described in the foregoing embodiments and optional implementations, and this embodiment is not described herein.
It should be understood by those skilled in the art that the technical features of the above-described embodiments may be combined in any manner, and for brevity, all of the possible combinations of the technical features of the above-described embodiments are not described, however, they should be considered as being within the scope of the description provided herein, as long as there is no contradiction between the combinations of the technical features.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (5)
1. The absolute efficiency test method of the hydroelectric generating set is characterized by comprising the following steps of:
acquiring original data acquired by a portable SCADA system acquisition device on a hydroelectric generating set; the original data comprise the active power, flow, unit rotating speed, guide vane opening, volute inlet pressure, upstream water level, downstream water level and power factor of the hydroelectric generating set;
screening the original data according to a preset screening rule; the screening rule comprises a sector exclusion rule and a data exclusion rule, wherein the sector exclusion rule comprises a sector which excludes the influence of the running water head of a surrounding hydroelectric generating set and the fluctuation of the volute inlet pressure;
the data eliminating rule comprises eliminating data caused by failure reasons and limit electricity reasons; eliminating data caused by unstable sensor, 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 unit;
analyzing the screened data, and fitting an actual measurement absolute efficiency curve;
the fitting of the measured absolute efficiency curve comprises: fitting an actual measurement absolute efficiency curve by using a polynomial under a least square method rule;
the measurement mode of the original data comprises the following steps:
measuring the power by a generator power measurement system, wherein the uncertainty of the generator power measurement system is no greater than ± 0.54%;
measuring the flow by an ultrasonic flow test system, wherein the uncertainty of the ultrasonic flow test system is not greater than + -0.5%;
measuring the volute inlet pressure by a pressure transmitter, wherein the absolute uncertainty of the pressure transmitter is no greater than ±0.1m;
the method further comprises the steps of: the working water head deviation is controlled to be not more than +/-1%, and the total uncertainty of the absolute efficiency of the test is not more than +/-0.75%.
2. The method of claim 1, wherein after said fitting of the 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 the number of the groups of groups,
and automatically deriving an original data table of the actual measurement absolute efficiency test.
3. The method of claim 1, wherein prior to said acquiring raw data collected by the portable SCADA system collector for the hydroelectric generating set, the method further comprises:
and checking whether the SCADA system collector and the sensors of all the measuring points operate normally or not.
4. A method according to claim 3, wherein after said checking if the SCADA system collectors and sensors of the stations 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.
5. The system for testing the absolute efficiency of the hydroelectric generating set is characterized by being used for realizing the method for testing the absolute efficiency of the hydroelectric generating set according to any one of claims 1-4, and comprises the following steps:
the acquisition module is used for acquiring the original data acquired by the portable SCADA system acquisition device on 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 out an actual measurement absolute efficiency curve.
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