CN101364735A - Experiment method for speed adjusting system load frequency adjustment test of gas turbine electricity generating set - Google Patents
Experiment method for speed adjusting system load frequency adjustment test of gas turbine electricity generating set Download PDFInfo
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- CN101364735A CN101364735A CNA200810042133XA CN200810042133A CN101364735A CN 101364735 A CN101364735 A CN 101364735A CN A200810042133X A CNA200810042133X A CN A200810042133XA CN 200810042133 A CN200810042133 A CN 200810042133A CN 101364735 A CN101364735 A CN 101364735A
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Abstract
The invention relates to a method for testing load-frequency adjusting characteristics of a speed control system of a power generating set of a gas turbine. The method is characterized in that a test module and a test control switch are added in control logic. The test method comprises the following steps: (a) adjusting the frequency of a simulation grid in the test module, and switching the test control switch in the close state; (b) switching the test control switch to the open state, and making the response for increasing or lowering the power of the generating set; (c) recording the frequency change data of the generating set, substituting a parameter value into a simulation model, and comparing with the actual power change curve to verify the accuracy of the model; and (d) switching the test control switch to the close state after the test is finished, and recovering the grid frequency obtained by a rotation speed control system to the actual grid frequency. The method can carry out the test by switching the frequency, and can obviate the interference due to the frequency fluctuation of the grid to obtain stable characteristic data of the speed control system, thereby improving the parameter accuracy of the simulation model and the reliability for model verification of the speed control system of the gas turbine.
Description
Technical field
The present invention relates to the Gas Turbine Generating Units governing system modeling experimental technique in grid stability simulation calculation field, particularly a kind of is the test method of the load-frequency adjustment characteristic test of Gas Turbine Generating Units governing system.
Background technology
In order to keep the stable of electrical network, generating set need have frequency regulation capability, and promptly generating set is oppositely regulated the power of unit at once when mains frequency changes, and reaches the purpose of electric power grid frequency stabilization.Setting up generating set governing system model is to carry out the basis that grid stability calculates.The grid stability simulation calculation needs accurate networking generating set governing system simulation model as the basis, and the correctness of generating set governing system simulation model must be carried out parameter identification and modelling verification by test.
Referring to Fig. 1, the test method of gas turbine speed adjusting system load-frequency adjustment characteristic is to add little interference biasing on the measured value of system frequency or generating set rotating speed at present, the system frequency or the rotating speed of setovering have superposeed, compare with frequency or speed setting system, governing system is according to the load of its difference regulator generator group, thus the regulating characteristics of measurement generating set governing system.
Traditional test method is one 0.4% a disturbance quantity of stack on the basis of actual electric network frequency (about 50Hz), because electrical network itself is all the time in fluctuation and astable constant (fluctuating range of normal condition is about ± 0.05%, be the test disturbance quantity 12.5%), therefore must cause the excessive result of result of the test error.And the governing system test must be finished by microvariations (＜0.4%), because disturbance quantity is crossed the fail safe that may well influence the normal operation of power plant, so the data that obtain with the traditional experiment method are coarse.
The subject matter that existing test method exists is, system frequency or rotating speed are in fluctuation status all the time, be about ± 0.05% generally speaking, and because the biasing of the restriction of security of system stack must be an interference volume (about ± 0.3%) by a small margin, therefore the system frequency fluctuation is bigger to the influence of result of the test, has reduced the accuracy of parameter identification and modelling verification.
Summary of the invention
Task of the present invention provides the test method of a kind of Gas Turbine Generating Units speed adjusting system load-frequency adjustment characteristic test, it has solved existing test method and has been in the fluctuation status greatly to the result of the test influence at system frequency or rotating speed, has reduced the problem of parameter identification and modelling verification accuracy.
Technical solution of the present invention is as follows:
A kind of test method of speed adjusting system load frequency adjustment test of gas turbine electricity generating set is set up tentative module and test control switch in control logic, concrete test procedure is:
A, set steady normally move, the mains frequency that revolution speed control system obtains is actual electric network frequency 50Hz, simulation mains frequency in the tentative module is adjusted to 99.6%～100.4% of 50Hz, and the test control switch of being controlled by electronic signal is positioned at closed condition;
B, switching tests control switch are to opening, it is 99.6%～100.4% of normal frequency that the mains frequency value that the revolution speed control system of unit obtains is changed into the simulation mains frequency, control system thinks that mains frequency reduces or improved 0.4%, makes the reaction that increases or reduce the power of the assembling unit thus;
The delta data of each link obtains the Model parameter value by parameter identification in c, the logging machine class frequency change procedure, in parameter value substitution simulation model, with the accuracy of actual power change curve contrast verification model;
The switching tests control switch is to closed condition after d, the off-test, and the mains frequency that revolution speed control system obtains returns to the actual electric network frequency.
Test method according to Gas Turbine Generating Units speed adjusting system load of the present invention-frequency adjustment characteristic test, set up the governing system frequency adjustment simulation model of Gas Turbine Generating Units according to data, on the generating set in power plant, carry out the prototype field test then, shielded the interference of mains frequency fluctuation thus, obtain stable governing system performance data, improved the accuracy of gas turbine governing system simulation parameters and the reliability of modelling verification.
Test by switching frequency according to method of the present invention, shielded the interference of power network fluctuation, the mains frequency during guarantee test can be stabilized in 99.6% or 100.4%, and error is 0%, and therefore the data that obtain are accurate, and model is believable.
The difference of the present invention and traditional governing system characteristic test method is, adopts the method that increases tentative module and control switch in control logic to substitute the method for traditional stack biasing in the control logic input.
Description of drawings
Fig. 1 is the experiment process figure of existing gas turbine governing system characteristic test method.
Fig. 2 is the fundamental diagram by the test method of Gas Turbine Generating Units speed adjusting system load of the present invention-frequency adjustment characteristic test.
Fig. 3 is the implementation method schematic diagram by operation principle shown in Figure 2.
Fig. 4 is the load responding curve chart when raising by embodiment governing system frequency of test method of the present invention or rotating speed.
Load responding curve chart when Fig. 5 is Fig. 4 embodiment governing system frequency or rotating speed reduction.
Embodiment
Referring to Fig. 2 and Fig. 3,, in control logic, set up tentative module and test control switch by the test method of a kind of Gas Turbine Generating Units speed adjusting system load of the present invention-frequency adjustment characteristic test.
For fear of the fail safe that influences system, can not substitute actual speed with given frequency or rotating speed simply, and must in control logic, increase test control module and control switch, the new variable of definition substitutes actual frequency or rotating speed with given frequency or rotating speed in this module, and does not change actual frequency or rotating speed variable in the The whole control system.
When on-test, with control switch the normal duty control module is switched to tentative module control, change above-mentioned custom variable, the regulating characteristics of test macro; When off-test, switch back initial condition with control switch again; What protection system still monitored in entire test is actual frequency and rotating speed, therefore can not influence the fail safe of system.
By the test method of Gas Turbine Generating Units speed adjusting system load of the present invention-frequency adjustment characteristic test, concrete test procedure is:
A, set steady normally move, the mains frequency that revolution speed control system obtains is about actual electric network frequency 50Hz, simulation mains frequency in the tentative module is adjusted to 99.6%～100.4% of 50Hz, especially the simulation mains frequency in the tentative module is adjusted to 99.6% or 100.4% of 50Hz, the test control switch of being controlled by electronic signal is positioned at closed condition.
B, switching tests control switch are to opening, it is 99.6%～100.4% of normal frequency that the mains frequency value that the revolution speed control system of unit obtains is changed into the simulation mains frequency, especially be 99.6% or 100.4%, control system thinks that mains frequency reduces or improved 0.4%, makes the reaction that increases or reduce the power of the assembling unit thus.
The delta data of each link obtains the Model parameter value by parameter identification in c, the logging machine class frequency change procedure, in parameter value substitution simulation model, with the accuracy of actual power change curve contrast verification model.
The switching tests control switch is to closed condition after d, the off-test, and the mains frequency that revolution speed control system obtains returns to the actual electric network frequency.
Referring to Fig. 4 and Fig. 5, newly-increased governing system tentative module is with a new self-defined frequency or rotating speed variable alternative system frequency or rotating speed, to obtain stable speed adjusting system load resonse characteristic.For example to the typical GE 9E/9F of company gas turbine speed adjusting system load response, Fig. 4 has shown the load responding curve when governing system frequency or rotating speed raise, and Fig. 5 has shown the load responding curve when governing system frequency or rotating speed reduce.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the present invention, and be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention conversion, the modification of the foregoing description.
Claims (5)
1. the test method of a speed adjusting system load frequency adjustment test of gas turbine electricity generating set is characterized in that, sets up tentative module and test control switch in control logic, and concrete test procedure is:
A, set steady normally move, the mains frequency that revolution speed control system obtains is actual electric network frequency 50Hz, simulation mains frequency in the tentative module is adjusted to 99.6%～100.4% of 50Hz, and the test control switch of being controlled by electronic signal is positioned at closed condition;
B, switching tests control switch are to opening, it is 99.6%～100.4% of normal frequency that the mains frequency value that the revolution speed control system of unit obtains is changed into the simulation mains frequency, control system thinks that mains frequency reduces or improved 0.4%, makes the reaction that increases or reduce the power of the assembling unit thus;
The delta data of each link obtains the Model parameter value by parameter identification in c, the logging machine class frequency change procedure, in parameter value substitution simulation model, with the accuracy of actual power change curve contrast verification model;
The switching tests control switch is to closed condition after d, the off-test, and the mains frequency that revolution speed control system obtains returns to the actual electric network frequency.
2. the test method of speed adjusting system load frequency adjustment test of gas turbine electricity generating set according to claim 1 is characterized in that, among the described test procedure a simulation mains frequency in the tentative module is adjusted to 99.6% of 50Hz.
3. the test method of speed adjusting system load frequency adjustment test of gas turbine electricity generating set according to claim 1 is characterized in that, among the described test procedure a simulation mains frequency in the tentative module is adjusted to 100.4% of 50Hz.
4. the test method of speed adjusting system load frequency adjustment test of gas turbine electricity generating set according to claim 1, it is characterized in that it is 99.6% of normal frequency that the mains frequency value that the revolution speed control system of unit obtains among the described test procedure b is changed into the simulation mains frequency.
5. the test method of speed adjusting system load frequency adjustment test of gas turbine electricity generating set according to claim 1, it is characterized in that it is 100.4% of normal frequency that the mains frequency value that the revolution speed control system of unit obtains among the described test procedure b is changed into the simulation mains frequency.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101604146B (en) * | 2009-07-15 | 2011-05-04 | 中冶南方工程技术有限公司 | Control method of automatic control system for blast furnace feeding |
| CN102436182A (en) * | 2011-08-31 | 2012-05-02 | 哈尔滨工程大学 | Semi-physical simulation device and simulation method of ship gas turbine generator set |
| CN102435945A (en) * | 2011-08-31 | 2012-05-02 | 哈尔滨工程大学 | Semi-physical simulation device and simulation method for combined gas turbine and gas turbine power generation unit of ship |
| CN102646980A (en) * | 2012-04-12 | 2012-08-22 | 山东电力研究院 | Novel primary frequency-modulation compensation control method of unit thermal generator set |
| CN102661177A (en) * | 2010-10-15 | 2012-09-12 | 华东电力试验研究院有限公司 | Method for realizing primary frequency regulation function of steam turbine by restricting opening degree of governor valve |
| CN103998723A (en) * | 2011-12-22 | 2014-08-20 | 川崎重工业株式会社 | Method for operating lean-fuel suction gas turbine engine, and gas turbine electricity generation device |
| CN104133466A (en) * | 2014-07-21 | 2014-11-05 | 广西电网公司电力科学研究院 | Method and system for testing control parameters of servo system of gas turbine speed regulator |
| CN104181910A (en) * | 2014-07-21 | 2014-12-03 | 广西电网公司电力科学研究院 | Control parameter testing method and system of servo card of stream engine speed regulation system |
| CN104730330A (en) * | 2013-12-23 | 2015-06-24 | 通用电气能源产品法国有限公司 | System and method for testing a rotary machine |
| CN110889646A (en) * | 2019-12-06 | 2020-03-17 | 华北电力大学 | Method for checking correctness of operating parameters of generator set adapting to working condition change |
| CN110928248A (en) * | 2018-09-19 | 2020-03-27 | 上海明华电力技术工程有限公司 | Method for determining performance degradation degree of gas turbine |
| CN111255575A (en) * | 2020-03-13 | 2020-06-09 | 东方日立(成都)电控设备有限公司 | Speed regulating system and speed regulating method for high-capacity gas turbine |
| RU2770316C1 (en) * | 2020-12-29 | 2022-04-15 | Публичное акционерное общество "ОДК-Уфимское моторостроительное производственное объединение" (ПАО "ОДК-УМПО") | System for testing an aviation gas turbine engine |
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2008
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101604146B (en) * | 2009-07-15 | 2011-05-04 | 中冶南方工程技术有限公司 | Control method of automatic control system for blast furnace feeding |
| CN102661177B (en) * | 2010-10-15 | 2014-09-17 | 华东电力试验研究院有限公司 | Method for realizing primary frequency regulation function of steam turbine by restricting opening degree of governor valve |
| CN102661177A (en) * | 2010-10-15 | 2012-09-12 | 华东电力试验研究院有限公司 | Method for realizing primary frequency regulation function of steam turbine by restricting opening degree of governor valve |
| CN102435945B (en) * | 2011-08-31 | 2013-09-25 | 哈尔滨工程大学 | Semi-physical simulation device and simulation method for combined gas turbine and gas turbine power generation unit of ship |
| CN102436182A (en) * | 2011-08-31 | 2012-05-02 | 哈尔滨工程大学 | Semi-physical simulation device and simulation method of ship gas turbine generator set |
| CN102435945A (en) * | 2011-08-31 | 2012-05-02 | 哈尔滨工程大学 | Semi-physical simulation device and simulation method for combined gas turbine and gas turbine power generation unit of ship |
| CN103998723A (en) * | 2011-12-22 | 2014-08-20 | 川崎重工业株式会社 | Method for operating lean-fuel suction gas turbine engine, and gas turbine electricity generation device |
| CN102646980A (en) * | 2012-04-12 | 2012-08-22 | 山东电力研究院 | Novel primary frequency-modulation compensation control method of unit thermal generator set |
| CN102646980B (en) * | 2012-04-12 | 2014-04-16 | 山东电力研究院 | Novel primary frequency-modulation compensation control method of unit thermal generator set |
| CN104730330A (en) * | 2013-12-23 | 2015-06-24 | 通用电气能源产品法国有限公司 | System and method for testing a rotary machine |
| CN104181910A (en) * | 2014-07-21 | 2014-12-03 | 广西电网公司电力科学研究院 | Control parameter testing method and system of servo card of stream engine speed regulation system |
| CN104133466A (en) * | 2014-07-21 | 2014-11-05 | 广西电网公司电力科学研究院 | Method and system for testing control parameters of servo system of gas turbine speed regulator |
| CN110928248A (en) * | 2018-09-19 | 2020-03-27 | 上海明华电力技术工程有限公司 | Method for determining performance degradation degree of gas turbine |
| CN110928248B (en) * | 2018-09-19 | 2022-10-25 | 上海明华电力科技有限公司 | Method for determining performance degradation degree of gas turbine |
| CN110889646A (en) * | 2019-12-06 | 2020-03-17 | 华北电力大学 | Method for checking correctness of operating parameters of generator set adapting to working condition change |
| CN111255575A (en) * | 2020-03-13 | 2020-06-09 | 东方日立(成都)电控设备有限公司 | Speed regulating system and speed regulating method for high-capacity gas turbine |
| RU2770316C1 (en) * | 2020-12-29 | 2022-04-15 | Публичное акционерное общество "ОДК-Уфимское моторостроительное производственное объединение" (ПАО "ОДК-УМПО") | System for testing an aviation gas turbine engine |
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| CN101364735B (en) | 2010-07-07 |
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Effective date of registration: 20081226 Address after: No. 171, Handan Road, Shanghai Applicant after: East China electric power test and Research Institute Co., Ltd. Co-applicant after: Shanghai Electric Power Corporation Co-applicant after: Shanghai Minghua Electric Power Technology Engineering Co., Ltd. Address before: No. 171, Handan Road, Shanghai Applicant before: East China electric power test and Research Institute Co., Ltd. Co-applicant before: Shanghai Minghua Electric Power Technology Engineering Co., Ltd. |
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