{"id":82397,"date":"2024-10-18T03:04:48","date_gmt":"2024-10-18T03:04:48","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ieee-421a-1978\/"},"modified":"2024-10-24T19:50:02","modified_gmt":"2024-10-24T19:50:02","slug":"ieee-421a-1978","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ieee\/ieee-421a-1978\/","title":{"rendered":"IEEE 421A 1978"},"content":{"rendered":"
New IEEE Standard – Inactive – Superseded. Superseded by 421.2-1990. This guide includes criteria, definitions, and test procedures for evaluating the dynamic performance of excitation control systems as applied by electric utilities. Primary purposes are to provide a basis for evaluating closed-loop performance of excitation control systems (including both the synchronous machine and its excitation system) for both large and small signal distutbances; confirming the adequacy of mathematical models of excitation systems for use in analytical studies of power systems; specifying methods for performing test of excitation control systems and their components; and preparing excitation system specifications and additional standards. Portions of this guide will also serve as an educational means for people becoming acquainted with excitation control systems.<\/p>\n
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7<\/td>\n | 4.4 Small Signal Performance Indexes Feedback Control System Performance Range of Excitation Control System Small Signal Dynamic Performance Indexes <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | Scope 2 Dynamic Performance Classification 2.1 Large Signal Performance 2.2 Small Signal Performance <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 3 Large Signal Performance Criteria 3.1 General 3.2 Excitation Systems <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 3.3 Excitation System Components 3.4 Summary 4 Small Signal Performance Criteria 4.1 General 4.2 Transient Response Exciter or Excitation System Voltage Response <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 4.3 Frequency Response Typical Time Response of a Feedback Control System to a Step Change in Input <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | Synchronous Machine Open Circuited the Synchronous Machine Open Circuited <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | 4.5 Application of Power System Stabilizers <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | Angle; C – Loaded Machine Operating at 102″ Torque Angle <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | Transfer Function of a Typical Power System Stabilizer FrequencyorSpeedInput <\/td>\n<\/tr>\n | ||||||
18<\/td>\n | 4.6 Synchronizing and Damping Torque Coefficients 4.7 Torsional Oscillations 4.8 Summary 5 Large Signal Performance Testing 5.1 Exciter Response Ratio 5.2 Excitation System Response Ratio <\/td>\n<\/tr>\n | ||||||
19<\/td>\n | 5.3 Field Testing of Excitation System Voltage Response Time 6.1 Excitation System Components <\/td>\n<\/tr>\n | ||||||
20<\/td>\n | Excitation System <\/td>\n<\/tr>\n | ||||||
21<\/td>\n | 6.2 Field Testing of Excitation Control Systems <\/td>\n<\/tr>\n | ||||||
22<\/td>\n | Power System Stabilizers <\/td>\n<\/tr>\n | ||||||
23<\/td>\n | (with DC Commutator Exciter) with and without a Power System Stabilizer <\/td>\n<\/tr>\n | ||||||
24<\/td>\n | Field Test Data – Power System Stabilizer Signature Tests <\/td>\n<\/tr>\n | ||||||
25<\/td>\n | Fig 10 Field Test Data – Damping of a Forced Oscillation with a Power System Stabilizer <\/td>\n<\/tr>\n | ||||||
26<\/td>\n | 7 References Power System Stabilizer During Random System Swings <\/td>\n<\/tr>\n | ||||||
31<\/td>\n | Appendix A Basis Underlying the Concept of Response Ratio Phasor Diagram of a Simplified Synchronous Generator Against an Infinite Bus <\/td>\n<\/tr>\n | ||||||
33<\/td>\n | Elements Element With a Single Time Constant Element With Two Time Constants <\/td>\n<\/tr>\n | ||||||
34<\/td>\n | Element With One Time Constant and a Transport Lag Lag-Lead Network <\/td>\n<\/tr>\n | ||||||
35<\/td>\n | Lead-Lag Network Element Having a Transfer Function with Underdamped Complex Poles <\/td>\n<\/tr>\n | ||||||
36<\/td>\n | Element Having a Transfer Function with Well Damped Complex Poles Element Having a Transfer Function with Critically Damped Poles <\/td>\n<\/tr>\n | ||||||
37<\/td>\n | Twin-Lead-Lag Network Rate Circuit With Washout Time Constant <\/td>\n<\/tr>\n | ||||||
38<\/td>\n | Open-Loop Frequency Response of Typical Excitation System Elements Closed-Loop Frequency Response of Typical Excitation System Elements <\/td>\n<\/tr>\n | ||||||
39<\/td>\n | 0ff.Line with and without Power System Stabilizer <\/td>\n<\/tr>\n | ||||||
40<\/td>\n | Appendix C Calculated Synchronizing and Damping Torque Functions A – Direct Axis; B – Quadrature Axis <\/td>\n<\/tr>\n | ||||||
41<\/td>\n | Successive Oscillation Peaks <\/td>\n<\/tr>\n | ||||||
42<\/td>\n | Stabilizer; B – With Power System Stabilizer <\/td>\n<\/tr>\n | ||||||
43<\/td>\n | Nomenclature for Appendix C C1 <\/td>\n<\/tr>\n | ||||||
44<\/td>\n | B – Without Power System Stabilizer; C – With Power System Stabilizer <\/td>\n<\/tr>\n | ||||||
45<\/td>\n | Normalized Envelope of Rotor Angle Oscillations <\/td>\n<\/tr>\n | ||||||
46<\/td>\n | Appendix D Field Measurement of Excitation System Component Gains Excitation Systems with Manual Control Means Providing Base Excitation D1 <\/td>\n<\/tr>\n | ||||||
47<\/td>\n | Excitation Systems with DC Regulators as Manual Control Means D2 <\/td>\n<\/tr>\n | ||||||
48<\/td>\n | Power System Stabilizer Gain D3 Technique <\/td>\n<\/tr>\n | ||||||
50<\/td>\n | Appendix E Definitions <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" IEEE Guide for Identification, Testing, and Evaluation of the Dynamic Performance of Excitation Control Systems<\/b><\/p>\n |