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TB 113 1997 SC 14 WG 14.01.03 Test circuits for HVDC thyristor valves.

In conformity with the usual classification of the specified tests into two major categories, dielectric tests and operational tests, the report is in two parts : Part 1 - Dielectric tests which deals principally with test circuits for verifying the high voltage characteristics of the valve, and Part 2 - Operational tests, which deals principally with test circuits for verifying the turn-on, turn-off and current related characteristics of the valve.

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TABLE OF CONTENTS

1 INTRODUCTION

2 TESTS BETWEEN VALVE TERMINALS

      2.1 Test Objectives

      2.2 Test Object

      2.3 Test Circuit Considerations

3 DIELECTRIC TESTS ON MULTIPLE VALVES

      3.1 Test Objectives

      3.2 Test Object

      3.3 Test Circuit Considerations

4 DIELECTRIC TESTS ON VALVE SUPPORT STRUCTURE

      4.1 Test Objectives

      4.2 Test Object

      4.3 Test Circuit Considerations

5 TEST CIRCUITS

      5.1 D.C. Voltage Tests

      5.2 A.C. Voltage Tests

      5.3 Combined A.C. and D.C. Voltage Test

      5.4 Impulse Voltage Tests

      5.5 Valve Non-Periodic Firing Test

6 REFERENCES