|
US$899.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email.
DL/T 1167-2019: Guide for modeling generator excitation system
Status: Valid DL/T 1167: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| DL/T 1167-2019 | English | 899 |
Add to Cart
|
6 days [Need to translate]
|
Guide for modeling generator excitation system
| Valid |
DL/T 1167-2019
|
| DL/T 1167-2012 | English | RFQ |
ASK
|
6 days [Need to translate]
|
Guide for modeling generator excitation system
| Obsolete |
DL/T 1167-2012
|
PDF similar to DL/T 1167-2019
Basic data | Standard ID | DL/T 1167-2019 (DL/T1167-2019) | | Description (Translated English) | Guide for modeling generator excitation system | | Sector / Industry | Electricity & Power Industry Standard (Recommended) | | Classification of Chinese Standard | K04 | | Classification of International Standard | 29.020 | | Word Count Estimation | 39,374 | | Date of Issue | 2019-06-04 | | Date of Implementation | 2019-10-01 | | Older Standard (superseded by this standard) | DL/T 1167-2012 | | Quoted Standard | GB/T 7409.1; GB/T 7409.2; GB/T 7409.3; DL/T 583; DL/T 843; DL/T 1391; DL/T 1767 | | Regulation (derived from) | Natural Resources Department Announcement No. 7 of 2019 | | Issuing agency(ies) | National Energy Administration | | Summary | This standard specifies the method for establishing the mathematical model of the excitation system of the synchronous generator for the stability analysis and calculation of the power system. This standard is applicable to the modeling of the excitation system of steam (gas) turbine generators, hydraulic turbine generators, pumped storage power plants/motors and nuclear power plants. | DL/T 1167-2019: Guide for modeling generator excitation system---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Guide for modeling generator excitation system Boiler refractory material for thermal power plant
ICS 29.020
K 21
People's Republic of China Electric Power Industry Standard
Replace DL/T 1167-2012
Guidelines for Modeling of Synchronous Generator Excitation System, Thermal Power Plant Boiler Refractories
2019-06-04 released
2019-10-01 implementation
Issued by National Energy Administration
Table of contents
Foreword...II
1 Scope...1
2 Normative references...1
3 Terms and definitions...1
4 Principles of Modeling Technology...3
5 Requirements for excitation equipment...4
6 Preparation of information and data...4
7 The unit value of the excitation system...5
8 Basic method of identification of link characteristics of excitation regulator...5
9 Establishment of the measured mathematical model of the excitation system...8
10 Model selection and parameter processing methods...23
11 Field test and verification of excitation system model parameters...24
12 Check of Approximate Calculation Model...26
13 Main content of excitation system modeling report...27
14 Review of model parameters and storage...28
Appendix A (Normative Appendix) Expression of Limiting...29
Appendix B (Informative Appendix) Low Excitation Limit Model...31
Appendix C (informative appendix) Overexcitation limit model...33
Appendix D (Normative Appendix) Calculation of Generator Saturation Coefficient...35
Foreword
This standard starts from the rules given in GB/T 1.1-2009 "Guidelines for Standardization Work Part 1.Standard Structure and Compilation"
grass.
This standard replaces DL/T 1167-2012.
Compared with DL/T 1167-2012, the main technical changes of this standard are as follows except for editorial changes.
- Modified normative reference documents (see 2);
- Modified terms and definitions (see 3);
- The technical requirement that the three-phase fully-controlled bridge rectifier should adopt cosine phase shift is revised (see 5.1c);
- Refined the requirements for the finalization test of the excitation system model (see 5.2);
- Detailed requirements for the test interface and test function of the excitation system (see 5.3);
--Added the information and data required for excitation modeling (see 6a, 6g and 6i);
- Added the content of determining the reactive current compensation coefficient (see 8.5.1);
--Modified the content of checking the polarity of voltage difference rate (see 8.5.2);
--- Added three measurement methods of reactive current compensation rate (see 8.5.3.3, 8.5.3.4, 8.5.3.5);
-The type of static excitation system is refined (see 9.2 c);
--- Added provisions for TE value in the absence of field test identification data (see 9.4.2.4 d);
- Amended formulas (17), (18) and (21) (see 9.4.2.6 and 9.4.2.10);
--- Added the content of "Voltage, current measurement and current compensation unit based on scalar multiplication and superposition" (see 9.6.2);
--- Added PSS-NB power system stabilizer model (see 9.8);
--Added the way that the auxiliary control link of the excitation system acts on the voltage regulator (see 9.9);
--- Added the test content of the generator direct-shaft transient open circuit time constant d0T ′ (see 11.2);
- Refine the allowable value of deviation between simulation and actual measurement (see 11.3.4);
--Clarified the requirements for using actual measured values for URMAX and URMIN (see 11.4 d);
--Added the content of the small step disturbance test check of the generator load voltage (see 11.5);
--Modified the check conditions of the approximate calculation model (see 12.2);
--Modified the content and requirements of the check calculation of the generator load step response approximate calculation model (see 12.3.2);
-Added the requirement that the excitation modeling report should collect the original data related to the main transformer and excitation system (see 13.8 b and 13.8 g);
--Added the content of model parameter review and storage (see 14);
-Amended Appendix C (see Appendix C);
-Revise Appendix D to be a normative appendix (see Appendix D).
This standard was proposed by the China Electricity Council.
This standard is under the jurisdiction of the National Grid Operation and Control Standardization Technical Committee (SAC/TC446).
Drafting organizations of this standard. State Grid Co., Ltd. National Power Dispatching Control Center, State Grid Zhejiang Electric Power Co., Ltd.,
Grid Zhejiang Electric Power Co., Ltd. Electric Power Research Institute, China Electric Power Research Institute Co., Ltd., China Southern Power Grid Power Dispatching
Control Center, North China Electric Power Research Institute Co., Ltd., East China Branch of State Grid Co., Ltd., Guangdong Power Grid Co., Ltd.
Company Electric Power Research Institute, State Grid Hubei Electric Power Research Institute, China Datang Group Science and Technology Research Institute
Co., Ltd. East China Electric Power Research Institute, State Grid Fujian Electric Power Co., Ltd. Electric Power Research Institute, Zhejiang Zheneng Technology Research Institute
Co., Ltd., Nanjing Nanrui Relay Electric Co., Ltd., Guodian Nanrui Technology Co., Ltd., State Grid Jiangxi Electric Power Co., Ltd.
Electric Power Research Institute.
The main drafters of this standard. Wu Kuayu, Yu Zhao, Xiong Hongtao, Huo Chengxiang, Sun Jianfeng, Wang Chao, Cao Lu, Sun Weizhen, Pu Jun,
Zhang Jianyun, Wu Long, Chen Xinqi, Wu Tao, Liu Hongtao, Shen Yijun, Xie Huan, Zhang Junfeng, Jiang Wei, Cheng Lin, Zhang Feng, Ding Kai, Dai
Shen Hua, Wu Jianchao, Ni Qiulong, Liu Yanjia, Yuan Yazhou, Shi Yang, Lou Boliang, Ye Lin, Lu Jiahua, Fang Le, Zhang Jiancheng, Zhang Jing,
Lu Cencen, Gao Lei, Zhu Hongchao, Xu Zaide, Wu Chaoqiang, Zhu Yanqing, Li Zhaoting.
The previous releases of this standard are as follows.
Questions or suggestions arising from the implementation of this standard should be reported to the Standardization Management Center of the China Electricity Council (Xuanwu District, Beijing)
No. 1, Ertiao Guanglu, 100761).
Guidelines for Modeling of Synchronous Generator Excitation System
1 Scope
This standard specifies the method for establishing the mathematical model of the excitation system of the synchronous generator for the stability analysis and calculation of the power system.
This standard is applicable to steam (gas) turbine generators, hydraulic turbine generators, pumped storage power plants/motors and nuclear power generators.
Magnetic system modeling.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version is suitable
Used in this document. For undated references, the latest version (including all amendments) applies to this document.
GB/T 7409 (all parts) Synchronous motor excitation system
DL/T 583 Technical conditions of static rectification excitation system and device for large and medium hydro-generator
DL/T 843 Technical conditions for excitation system of large turbo-generator
DL/T 1391 Digital automatic voltage regulator network performance testing guidelines
DL/T 1767 Technical requirements for auxiliary control of digital excitation regulator
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Primary model
The structure and parameters of the model provided by the manufacturer or derived from the information provided by the manufacturer.
3.2
Measured model
The actual model structure and parameters obtained after actual measurement of the model and parameters with reference to the original model.
3.3
Calculating model
Model structure and parameters for stable calculation.
a) Identical calculating model—consistent with the measured model structure, verified by simulation
Recognize the calculation model structure and parameters that meet the requirements.
b) Approximate calculation model (similar calculating model)-there is a certain difference with the measured model structure, through calculation
The model structure and parameters for stable calculation that basically meet the requirements after program simulation and parameter adjustment.
3.4
Voltage compensative ratio
When the power factor of the generator is equal to zero, when the reactive current changes from zero to the rated stator current value, the generator end
The rate of change of voltage, the voltage difference rate after the active and reactive load current compensator exits is called the natural voltage difference rate.
[GB/T 7409.1-2008, general rule 2.21]
3.5
Reactive current compensative ratio and reactive current compensative ratio and reactive
current compensative coefficient
(According to the description of the effect) The increment of the voltage adjustment rate due to the input of the reactive current compensator is the reactive current compensation rate,
The corresponding compensation control parameter is called the reactive current compensation coefficient.
3.6
Step test
A step change test of the set value of the controlled quantity.
3.7
Step value
In the step test, the difference between the final steady-state value of the controlled quantity and the initial value.
3.8
Overshoot
In the step test, after the controlled quantity crosses the final steady state value for the first time, the ratio of the difference between the controlled quantity and the final steady state value to the step quantity
The maximum value.
3.9
Start time
The moment when the controlled quantity starts to respond during the step test.
3.10
Upward time
In the step test, the time from the starting time t0 to the first time the change value of the controlled quantity reaches 90% of the step quantity.
3.11
Peak time
In the step test, the time from the starting time t0 to the absolute value of the controlled variable reaching the maximum value.
3.12
Settling time
In the step test, from the starting time t0 to the absolute value of the difference between the controlled quantity and the final steady-state value, it continues to be less than the absolute value of the step quantity
5% of the value (point C in Figure 1).
3.13
Number of oscillation
The number of oscillation cycles of the controlled quantity during the adjustment time.
3.14
Frequency-domain measuring
Add sine signals or noise signals of different frequencies to the input end, measure the frequency response characteristics of the output end to the input end, and take
A method to identify the model and its parameters using direct comparison of amplitude-frequency and phase-frequency characteristics or curve fitting techniques.
3.15
Time-domain measuring
Add a disturbance signal at the input, generally a step signal, measure the time domain response characteristics of the output, and analyze the structure of the link
The method to identify the model and its parameters by comparing the simulated time-domain response characteristic curve with the measured results.
4 Principles of Modeling Technology
4.1 The model of the excitation system components should meet the requirements of GB/T 7409.Excitation system parameter measurement and modeling work in the excitation system
The on-site test and debugging of the system shall be carried out after being qualified.
4.2 The actual measurement and modeling test of the excitation system parameters of the newly put into production generator set should be completed before the unit's full load trial operation. Excitation system occurs
When equipment transformation, software upgrade, parameter modification, etc., should be reported to the dispatching agency under its jurisdiction and its technical support unit for record and renewed as required
Schedule testing. For other equipment modifications, software upgrades and parameter modifications that do not affect the model, report to the dispatching agency and its technology
The supporting unit can be filed.
4.3 Based on the model technical data provided by the equipment manufacturer, the measured model is established through field testing, identification and simulation calculation
type.
4.4 Establish a calculation model based on the measured model. The calculation model should be able to meet the power system simulation adopted by the local grid dispatching agency
Calculation program used.
4.4.1 The equivalent calculation model can be a fixed model in the power system calculation program, or a self-defined model. get on
The simulation of the generator no-load voltage step is compared with the test results to determine the equivalent calculation model and parameters.
4.4.2 When there is no model that is basically consistent with the measured model structure in the calculation program, the best choice is the actual excitation system structure.
Close the model, and adjust the parameters to make the characteristics basically consistent with the test results, thereby obtaining an approximate calculation model. Close
Similar to the calculation model, it is required to perform the verification calculation under generator load disturbance.
4.5 For stability calculation, at least automatic voltage regulator, excitation system power equipment, power system stabilizer (PSS),
The mathematical model and parameters of the differential adjustment characteristics and the top value limit, the voltage stability calculation and the medium and long-term stability calculation should also provide low excitation
Limit (UEL), overexcitation limit (OEL), and Volt limit mathematical models and parameters.
5 Requirements for excitation equipment
5.1 Technical requirements for excitation system equipment
a) Mathematical models and parameters (including automatic voltage regulators, excitation system power equipment, electrical
Force system stabilizer, difference adjustment, low excitation limit, overexcitation limit, top value limit, volt hertz limit, etc.) and excitation
The technical data of magnetic equipment, and the excitation system shall meet the requirements of GB/T 7409, DL/T 583, DL/T 843 and other standards;
b) The setting value of the regulator should be expressed in decimal, the time constant is expressed in seconds, and the magnification and limiting values should be expressed in units of standard values.
Show and explain the method of determining the benchmark value of the unit value;
c) The rectifier using a three-phase full-control bridge based on thyristor should adopt cosine phase shifting, and the cosine phase shifting algorithm should consider the rectifier bridge crossover.
The current side voltage changes to ensure that the static gain is constant under different working conditions;
d) The excitation regulator should complete the link programming correctness check before finalizing production, or the excitation regulator of the same type should be tested in other
The correct link parameters have been verified in the excitation system modeling of the unit, and the corresponding technical support documents have been provided, otherwise
Confirm the model parameters of PID and feedback control links through link characteristics measurement and identification methods.
5.2 Excitation system model finalization test requirements
a) The product mathematical model parameters should be confirmed in the design and type test stages, and the equipment should pass the product technical appraisal.
Before the field of the excitation system is put into production, the excitation controller model should be carried out in a qualified third party according to the requirements of DL/T 1391
The parameter test is qualified and a complete network-related performance test report is provided;
b) The third-party test and verification of excitation system model parameters shall include (but not limited to).
1) AVR model and parameter check;
2) Power system stabilizer model and parameter check;
3) Model and parameter check of error adjustment link;
4) Verification of the function of the main restriction link and the way it acts on the main control loop.
c) The software version of the excitation controller used on site should be consistent with the software version when the third-party test is qualified. Before software upgrade
An additional test qualification report shall be provided and the reason and content of the upgrade shall be explained, and the on-site modeling test shall be carried out again if necessary.
5.3 Excitation system test interface and test function requirements
a) The excitation system should have the D/A, D/A, and D/A that meet the requirements of the standard and can be used by third parties for mathematical model parameter testing.
A/D conversion interface, the insulation, anti-interference, conversion accuracy and response time of each conversion interface can meet the test requirements,
including but not limited to).
1) A/D interface that can be superimposed to AVR given and PSS signal input points;
2) AVR control output and PSS control output after D/A conversion.
b) The excitation system should provide excitation voltage and excitation current terminals that are convenient for instrument measurement, wiring and meet insulation requirements.
Each test interface can ensure the safety of equipment, personnel and system during the test.
6 Preparation of information and data
The following information and data should be collected according to the type of excitation system.
a) Main wiring diagrams including generators, main transformers, high-voltage busbars of plants and stations, transmission lines, etc.;
b) Rated capacity, primary and secondary rated voltage, short-circuit reactance and negative sequence reactance of the main transformer and excitation transformer;
c) DC exciter no-load characteristic curve, load characteristic curve, rated voltage, rated current, excitation winding time constant,
Excitation method, field winding resistance, etc.;
d) AC exciter rated capacity, rated voltage, rated current, rated power factor, rated magnetic field voltage and current,
No-load and load characteristic curve, excitation winding time constant T′d0e when armature is open, excitation mode, excitation winding resistance,
Synchronous reactance Xde, sub-transient reactance X″de and negative sequence reactance X2e;
e) The auxiliary exciter rated capacity, rated voltage, rated current, rated power factor, rated frequency, external characteristic curve,
No-load voltage, terminal voltage when the generator outputs rated current, and terminal voltage when the generator outputs strong excitation current;
f) Generator no-load characteristic curve, generator T′d0 and other time constants, generator reactance values, complete unit shafting
Moment of inertia of components (including prime mover), generator rated voltage, rated current, rated apparent power, rated power factor
Number, rated field voltage, rated field current, no-load rated field voltage, no-load rated field current,
Resistance value of field winding at temperature;
g) The trigger angle range of the controllable rectifier bridge of the excitation system, and the wiring mode of the primary circuit of the rectifier bridge of the excitation system and the de-excitation system;
h) Excitation system function description, commissioning test report and setting parameters of each link;
i) A network-related performance test report of the excitation system issued by a qualified third party.
7 The unit value of the excitation system
a) The standard unit value is obtained by dividing the actual value by the reference value;
b) The reference value UB of the generator voltage is the rated voltage of the generator, and the reference value IB of the generator current is the rated current of the generator,
The reference value of generator power SB is the rated apparent power of the generator, and the reference value of the generator speed (frequency) is nB (fB)
Is the rated speed (frequency) of the generator;
c) The reference value of the generator field current IfB is the field current required to generate the rated voltage on the generator's no-load characteristic air gap line.
Current; the reference value of the generator field winding resistance RfB is the generator excitation loop resistance under the generator's rated working condition, and it can also be
Take the value of the generator rated field voltage divided by the rated field current; the reference value UfB of the generator field voltage is the magnetic field voltage
The reference value of the field current is multiplied by the reference value of the field winding resistance;
d) The reference value IefB of the exciter's magnetic field current is to generate a standard per unit power generation on the air gap line of the exciter's no-load characteristic curve
The exciter field current value required by the generator field voltage, the reference value RefB of the exciter field resistance is the generator rated
The resistance of the excitation circuit of the exciter under working conditions can also be taken as the rated field voltage of the exciter divided by the rated field voltage of the exciter
And consider the circuit resistance as the reference value RefB of the exciter's excitation resistance; the reference value UefB of the exciter's field voltage
Is the reference value of the exciter field current multiplied by the reference value of the exciter winding resistance;
e) The reference value of the input voltage, current and power of the regulator is equal to the reference value of the generator voltage, current and power. when
When controlling the generator field voltage, the regulator output voltage reference value is equal to the generator field voltage reference value, the regulator
The reference value of the output current is equal to the reference value of the generator field current. When controlling the exciter field voltage, the regulator outputs
The voltage reference value is equal to the reference value of the exciter field voltage, and the regulator output current reference value is equal to the exciter field voltage.
The baseline value of the stream.
8 Basic method of identification of link characteristics of excitation regulator
8.1 Overview
According to the circuit diagram of the analog regulator or the transfer function block diagram of the digital regulator, the model of each part can be determined.
On this basis, its parameters are measured. According to the specific conditions of the model, the input and output characteristics of each link are tested hierarchically. According to the measurement results
The result is fitted with a predetermined calculation model to obtain unknown parameters. The test and identification of the link characteristics of the excitation regulator are generally static
The commonly used methods are frequency domain measurement method and time domain measurement method. It is also possible to use both frequency domain measurement and time domain measurement at the same time.
law.
8.2 Frequency domain measurement method
8.2.1 Use a spectrum analyzer to measure the frequency characteristics of the output of the link to be identified to the input. The signal can be sine sweep or
For noise signals, use contrast or fitting techniques to identify the parameters of the model.
8.2.2 For a simple first-order model, the parameters can be directly calculated using the characteristic values of known frequency characteristics.
8.2.3 For non-first-order models, since the model structure and some parameters of the object are generally known, parameter fitting techniques can be used
Or use the method of comparing the frequency characteristics of the model with the measured frequency characteristics to determine the parameters of the model.
8.2.4 The frequency range of the measurement should be selected according to the characteristics of the research object.
8.3 Time domain measurement method
8.3.1 Input the disturbance signal, generally a step signal, measure the output response, adopt the method of comparing the output response characteristic curve
Identify the parameters of the model.
8.3.2 For simple first-order inertial models, such as the voltage and power measurement links of the excitation regulator, when using a step response
In the test method, the time required for its output to reach 0.632 times the steady-state variation is the time constant of the link; the output steady-state variation
The ratio of the amount of change to the amount of input step is the gain of the link.
8.3.3 For non-first-order models, such as the PID link, the leading link of the excitation regulator, the soft negative feedback link of the excitation regulator,
The time constant compensation link (hard negative feedback link) and PSS link of the excitation regulator can use t...
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of DL/T 1167-2019_English be delivered?Answer: Upon your order, we will start to translate DL/T 1167-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 4 ~ 6 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of DL/T 1167-2019_English with my colleagues?Answer: Yes. The purchased PDF of DL/T 1167-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version DL/T 1167-2019?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version DL/T 1167-2019 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|