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NB/T 10342-2019: (Guidelines for design of hydropower station regulation assurance)
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(Guidelines for design of hydropower station regulation assurance)
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NB/T 10342-2019
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Basic data | Standard ID | NB/T 10342-2019 (NB/T10342-2019) | | Description (Translated English) | (Guidelines for design of hydropower station regulation assurance) | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | P59 | | Word Count Estimation | 32,313 | | Date of Issue | 2019-12-30 | | Date of Implementation | 2020-07-01 | | Issuing agency(ies) | National Energy Administration | NB/T 10342-2019: (Guidelines for design of hydropower station regulation assurance)---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 Hydraulic Transient Guarantee Design
of Hydropower Stations
Energy Industry Standards of the People's Republic of China
Design Guidelines for Regulation Assurance of Hydropower Stations
2019-12-30 released
2020-07-01 Implementation
Issued by the National Energy Administration
Energy Industry Standards of the People's Republic of China
Design Guidelines for Regulation Guarantee of Hydropower Station
Foreword
According to the “Notice of the National Energy Administration on Issuing the First Batch of Industry Standard System (Revision) Plans in the Energy Sector in.2012” (National Energy Administration
Neng Technology [2012] No. 83), the guidelines compilation team has conducted extensive investigations and studies, earnestly summarized practical experience, and conducted extensive
Based on soliciting opinions, formulate this guideline.
The main technical contents of this guideline are. basic regulations, determination of calculated control values in the hydraulic transition process, selection of calculation conditions,
The calculation and adjustment of the hydraulic transition process guarantee the determination of the design value, and the adjustment guarantee the design results and application.
This guideline is managed by the National Energy Administration, put forward by the General Institute of Hydropower and Water Conservancy Planning and Design, and is responsible for daily management.
The Technical Committee for Standardization of Industry Hydropower and Hydraulic Machinery is responsible for the interpretation of specific technical content. If you have comments or suggestions during the implementation process,
Please send it to the General Institute of Hydropower and Water Conservancy Planning and Design (Address. No. 2, Kangbei Xiaojie, Liupu, Xicheng District, Beijing, post code. 100120).
Editor-in-chief of this guideline. General Institute of Hydropower and Water Conservancy Planning and Design
China Power Construction Group Beijing Survey, Design and Research Institute Co., Ltd.
Participating unit of this guideline. China Power Construction Group East China Survey, Design and Research Institute Co., Ltd.
The main drafters of this guideline. Zhao Kun, Gou Dongming, Yi Zhongyou, Zhou Zhenzhong, Zheng Dongfei, Han Lingli, and Li Bing
Wang Jianhua Li Shihong Wang Yuhui Zhang Haosheng Guo Xibing Jiang Kuichao Huang Yu
Zhu Rusha Li Gaohui Wang Delou
Main reviewers of this guideline. Dai Kangjun, Fang Guangda, Liu Gongmei, Chen Shunyi, Yuan, Lian Jun, Duan Bin, and Fu Guofeng
Zhang Qiang Jiang Dengyun Chen Hongchuan Li Yuebin Wu Saibo Wang Jianhua Chen Dong
Yang Jiaming Shi Qinghua Tan Daqing Shao Baoan Zhang Yunhai Wang Xianping Wang Dasheng
Chen Liangnian Peng Shuojun Du Gang Zeng Zhenling Youchao Liu Jie Yuan Yanliang
Gui Shaobo Palace let Qin Zhou Qingda Li Shisheng
Table of contents
1 General...1
2 Terminology...2
3 Basic regulations...4
4 Determining the calculated control value of the hydraulic transition process...5
4.1 Calculation of the control value of large fluctuations in the hydraulic transition process...5
4.2 Calculation of control values for small fluctuations in hydraulic transition process...5
4.3 Calculation control value of hydraulic interference in hydraulic transition process...6
5 Selection of calculation conditions...7
6 Calculation of hydraulic transition process...8
7 Adjustment to ensure design value determination...9
8 Adjustment and Guarantee Design Results and Application...10
Appendix A Calculation Conditions for Large Fluctuations in the Hydraulic Transition Process...11
Appendix B Calculation Conditions for Small Fluctuations in the Hydraulic Transition Process...16
Appendix C Hydraulic Interference Calculation Conditions in the Hydraulic Transition Process...17
Explanation of terms used in this guideline...18
List of Reference Standards...19
Attachment. Article description...20
1 General
1.0.1 This guideline is formulated in order to standardize the regulation and guarantee design work of hydropower stations.
1.0.2 This guideline is applicable to the regulation guarantee design of newly constructed, rebuilt and expanded hydropower stations.
1.0.3 The regulation guarantee design of the hydropower station shall not only comply with this guideline, but shall also comply with the current relevant national standards.
2 term
2.0.1 hydraulic transient guarantee design
Combining with the basic requirements for safe operation of hydropower stations, aiming at the technical and economic rationality of the project, through the analysis of the hydraulic transition process
Research and determine the control parameters of the hydraulic transition process of the water transmission and power generation system and the corresponding unit operating conditions.
2.0.2 water conveyance and generating system
It is a system composed of water conveyance structures that complete the water transportation and equipment that realizes the mutual conversion of water energy and electric energy.
2.0.3 hydraulic transient process
The time-varying process of a water transmission power generation system from a stable operating state to another stable operating state.
2.0.4 Calculation control values for hydraulic transient
process
According to the unit type, characteristic parameters and role in the power grid, combined with engineering layout characteristics and similar engineering practices,
Calculate the limit value of the hydraulic transition process determined before calculation.
2.0.5 calculation values for hydraulic transient process
The parameter values of the hydraulic transition process of the water transmission and power generation system obtained by calculation.
2.0.6 Adjusting guarantee design value hydraulic transient guarantee design value
According to the calculated value of the hydraulic transition process of the selected control condition, the design parameters determined after correction are carried out, and the design parameters are determined in actual operation.
The restrictive parameters that should be met in the hydraulic transition process.
2.0.7 Calculation conditions for hydraulic transient process calculation conditions for hydraulic transient process
It is composed of the initial boundary conditions, disturbances, and unit operation modes before the hydraulic transition process of the water transmission and power generation system.
The layout of the water transmission and power generation system of the hydropower station, the upstream and downstream characteristic water level, the unit type and parameters, the main wiring type, and the access to the power system
The method is drafted.
2.0.8 design condition
Hydraulic transition process meter including normal operation operation, 1 contingency event and a combination of normal operation operation and 1 contingency event
Calculate working conditions.
2.0.9 Check condition
The calculation conditions of the hydraulic transition process including 2 independent incidents.
2.0.10 small oscillation
The hydraulic transition process of the water transmission and power generation system caused by the sudden increase or decrease of the unit not more than 10% of the rated load.
2.0.11 large oscillation
The hydraulic power of the water transmission and power generation system caused by the sudden increase or decrease of more than 10% of the rated load or the sudden rejection of the entire load and its combination
The transition process.
2.0.12 hydraulic disturbance
The hydraulic transition of the water transmission and power generation system caused by the increase or decrease of the load of some units in the same hydraulic unit or the sudden rejection of the full load
Cheng.
2.0.13 major wave
In the case of load disturbances in hydropower stations with surge chambers, high-frequency oscillations caused by water hammer pressure fluctuations in pressure pipelines,
The cycle is short and the decay is fast.
2.0.14 Stern wave
When the load disturbance occurs in the hydropower station with the surge tank, the low-frequency oscillation caused by the fluctuation of the water level in the surge tank has a long period and
Decay slowly.
3 Basic regulations
3.0.1 The regulation guarantee design of the water transmission and power generation system of a hydropower station shall follow the principles of ensuring safety, economy and rationality.
3.0.2 Regarding the design conditions of the regulation guarantee, the extreme values of the parameters appearing during the hydraulic transition of the water transmission and power generation system should not exceed the regulation guarantee.
It is necessary to ensure that the unit and water conveyance structure do not damage the structure of the unit and the water conveyance structure for the adjustment and assurance check working conditions.
3.0.3 In the pre-feasibility study stage, according to the preliminary drafted unit parameters and water delivery structure parameters, etc.
The situation put forward the preliminary results of hydropower station regulation guarantee design.
3.0.4 In the feasibility study stage, the calculation results of the hydraulic transition process of the water transmission and power generation system shall be combined to establish unit parameters and water transmission construction.
Technical and economic comparison and optimization of the building type, size, etc.; should be based on the selected unit parameters, water delivery building parameters, and main
Wiring type and access system method, etc., propose adjustment guarantee design values and corresponding operating rules for hydropower stations, and evaluate their water
Safety and operational stability under the conditions of the power transition process; for large hydropower stations and pumped storage power stations with complex water delivery systems,
At least two different hydraulic transition process calculation software should be used for calculation comparison and analysis, and special research should be carried out.
3.0.5 During the detailed construction drawing stage, the design should be checked and adjusted according to the determined water delivery system parameters and the characteristics of the water turbine generator set to ensure that the design is
fruit.
3.0.6 When there are changes in the parameters of the water transmission and power generation system, review and adjustment should be made to ensure the design results.
3.0.7 When the load rejection guide vane of the unit is normally closed, the inlet valve should not participate in the flow adjustment of the hydraulic transition process of the water transmission and power generation system.
Section.
3.0.8 Before obtaining the hydraulic turbine/pump-turbine characteristic curve of the hydropower station, the guide vane closing rule during the calculation of the hydraulic transition process
It should be closed in a straight line.
3.0.9 The influence of the moment of inertia of the water body should be included in the calculation of the hydraulic transition process of axial flow and tubular hydropower stations, and the backwater should be included.
Click Calculate.
4 Determining the calculated control value of the hydraulic transition process
4.1 Calculation of the control value of large fluctuations in the hydraulic transition process
4.1.1 The calculated control value of the maximum pressure rise rate at the inlet of the volute for load rejection of the unit, the reference value is the upstream normal storage level and the machine
The difference in installation elevation of the group shall meet the following requirements.
1 For the tubular unit, it should be 100%～60%.
2 For axial flow unit, 70%～50% should be used.
3 For mixed flow units, when the rated water head is less than 100m, it should be 60%～30%; the rated water head is 100m～300m...
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