DL/T 751-2001 in English

1 Scope

This code specifies the relevant issues of the operation of hydraulic turbine generators, such as basic technical requirements, operation mode, operation, inspection and maintenance and accident handling.
This code is applicable to the 10MW or above synchronous hydraulic turbine generators of the power industry systems (the synchronous hydraulic turbine generators below 10MW may refer to this code). This code is also applicable to the generator/motor of pump storage unit.

2 Normative References

The following standards contain provisions which, through reference in this text, constitute provisions of this code. At time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this code are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.

Contents
Foreword
1 Scope
2 Normative References
3 General Provisions
3.1 General Requirements
3.2 Measuring, Signal, Protective and Monitoring Devices
3.3 Excitation System
3.4 Cooling System
3.5 Bearing
4 Operation Mode of Generator
4.1 Operation Mode Under Rated Conditions
4.2 Operation Mode at the Time of Changing Air Inlet Temperature
4.3 Operation Mode at the Time of Changing Voltage, Frequency and Power Factor
5 Supervision, Inspection and Maintenance of Generator Operation
5.1 Startup, Paralleling, Loading Up and Shutdown of Generators
5.2 Supervision, Inspection and Maintenance during Generator Operation
5.3 Inspection and Maintenance of the Slip Ring and Exciter Commutator Brushes
5.4 Inspection and Maintenance of Excitation Device
6 Irregular Operation and Accident Treatment of the Generator
6.1 Emergency Overload of the Generator
6.2 Accident Treatment of the Generator
6.3 Failure and Abnormal Operation of the Generator
6.4 Failure of Excitation System
7 Generator/Motor Operation
7.1 Operation Mode of the Generator/Motor
7.2 Startup, Paralleling, Operation, Shutdown and Working Condition Conversion of the Generator/Motor
7.3 Frequency Converter