IEC 61064 : 1.0

ACCEPTANCE TESTS FOR STEAM TURBINE SPEED CONTROL SYSTEMS

International Electrotechnical Committee

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Foreword
1 Scope and object
2 Normative reference
3 Terms, symbols, definitions and units
4 Guiding principles
   4.1 Matters on which agreement shall be reached
   4.2 Time of carrying out tests
   4.3 Preparation for acceptance tests
   4.4 Instruments
   4.5 Test report
5 Speed governing system tests
   5.1 Turbine at standstill
   5.2 Turbine at no-load
        5.2.1 Overview
        5.2.2 Test procedure for determination of static
               characteristics
        5.2.3 Determination of dead band
        5.2.4 Speed range determination
        5.2.5 Stability
   5.3 Turbine on load
        5.3.1 Overview
        5.3.2 Test conditions
        5.3.3 Load-steam flow demand relationship
        5.3.4 Dead band determination - Overview
        5.3.5 Dead band determination - Method 1
        5.3.6 Dead band determination - Method 2
        5.3.7 Determination of steady-state speed regulation -
               Method 1
        5.3.8 Determination of steady-state speed regulation -
               Method 2
        5.3.9 Determination of incremental speed regulation -
               Method 1
        5.3.10 Determination of incremental speed regulation -
               Method 2
        5.3.11 Stability
   5.4 Dynamic tests of the speed governing system by
        sudden load rejection to no-load
        5.4.1 Overview
        5.4.2 Operating conditions
        5.4.3 Test procedure
        5.4.4 Test results
        5.4.5 Stability
6 Overspeed protection system tests
   6.1 Turbine at standstill
   6.2 Turbine at no-load
   6.3 Turbine on load
   6.4 Dynamic testing of overspeed protection system
        by turbine trip from maximum load
        6.4.1 Overview
        6.4.2 Operating conditions
        6.4.3 Test procedure
        6.4.4 Test results
Annex A General guidance
Figures

Abstract

Contains recommendations for the conduct tests of speed control systems of steam turbines. Applies primarily to constant speed steam turbines but may be applied where appropriate for other types of turbines. The purpose of tests described in this publication is to verify the criteria guaranteed by the manufacturer and to check compliance with IEC 45-1. Coverage includes guiding principles, speed governing system tests, turbine on load, and over-speed protection system tests.