GB/T 35729-2017Code of practice for maintenance and test of digital electro-hydraulic control system of steam turbine in fossil fuel power plant (English PDF)
火力发电厂汽轮机数字电液控制系统运行维护与试验技术规程
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 29, 2017
Implementation date
July 1, 2018
Scope
GB/T 35729-2017 is the English-translated version of 火力发电厂汽轮机数字电液控制系统运行维护与试验技术规程.
GB/T 35729-2017 is the Chinese standard "Code of practice for maintenance and test of digital electro-hydraulic control system of steam turbine in fossil fuel power plant".
Its scope clause reads: This standard specifies the thermal power plant steam turbine digital electro-hydraulic control system (DEH) overhaul, test and operation of the content, methods and Technical requirements should be met.
This standard applies to thermal power plant in-service units using distributed control system (DCS) consisting of DEH. Other types of steam turbine electricity Hydraulic control system can also refer to the implementation. Its clauses include terms and definitions.
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Document preview — GB/T 35729-2017
National Standard of the People's Republic of China
- ICS
- 27.100
- Classification
- F 23
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Preface
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 overhaul
- 4.1 Preparation before maintenance
- 4.2 blackout maintenance
- 4.3 after power overhaul
- 5 Test
- 5.1 before starting the static test and technical requirements
- 5.2 start-up phase of dynamic test and technical requirements
- 6 operation and maintenance
- 6.1 Routine Maintenance
- 6.2 regular maintenance and testing
1 Scope
This standard specifies the thermal power plant steam turbine digital electro-hydraulic control system (DEH) overhaul, test and operation of the content, methods and
Technical requirements should be met.
This standard applies to thermal power plant in-service units using distributed control system (DCS) consisting of DEH. Other types of steam turbine electricity
Hydraulic control system can also refer to the implementation.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this document.
For undated references, the latest edition (including all amendments) applies to this document.
Thermal power station monitoring system terminology
GB/T 30370 thermal power unit primary frequency performance test and acceptance guidelines
DL/T 656 Thermal Power Plant Turbine Control System Acceptance Test Procedures
Test guideline for steam turbine governing system
Thermal power plant thermal industrial automation system maintenance operation and maintenance of technical regulations
DL/T 1270 Thermal Power Generation Project Load Rejection Test Guideline 711
3 Terms and definitions
GB/T 26863-2011 defined and the following terms and definitions apply to this document. For ease of use, the following list is repeated
GB/T 26863-2011 some of the terms and definitions.
3.1 Unequal speed droop
Steam turbine control system static characteristic curve slope. Usually the corresponding empty load and full load speed difference and rated speed ratio
Percentage to indicate.
[GB/T 26863-2011, Definition 6.29.4.15]
3.2 Primary frequency control primarycontrolofthespeedofgeneratingsets; primaryfrequencycontrol; PFC
Each prime mover governor to adjust the speed of each generator, so that the drive torque varies with the system frequency.
[GB/T 26863-2011, Definition 6.29.1.5]
3.3 Intake mode conversion FA/PAtransfer
According to the operating mode (constant pressure, sliding pressure) and load changes in the request, change the steam turbine control valve opening mode, so that the turbine throttle
Section (full steaming) or nozzle adjustment (partial steaming).
[GB/T 26863-2011, Definition 6.29.4.12] […]
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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