T/CAMETA 001084-2025 Calculation for relaying protection and automatic equipment of 35kV and below power system in process industry

Scope

This document defines the terms and definitions for the setting and calculation of relay protection and safety automatic devices for electrical systems of 35 kV and below in process industry enterprises, establishes the basic principles for the setting and calculation of relay protection and safety automatic devices for electrical systems of 35 kV and below in process industry enterprises, and describes the methods for the setting and calculation of relay protection and safety automatic devices for electrical systems of 35 kV and below in process industry enterprises. This document is applicable to process industry enterprises in carrying out the setting and calculation of relay protection and safety automatic devices for electrical systems of 35 kV and below. 1 Scope 2 Normative References 3 Terms and Definitions 4 Basic Principles 5 General Provisions 6 6 kV～35 kV Line Protection Setting 7 6 kV～35 kV Bus Protection Setting 8 35kV, 10 (6 kV Sectional (Bus Tie) Switch Protection Setting 9 35/10(6 kV Transformer Protection Setting 10 35/0.4(0.69) kV, 10(6)/0.4(0.69) kV Transformer Protection Setting 11 Rectifier Transformer Protection Setting 12 Arc-Suppression Coil Grounding Transformer Protection Setting 13 Low-Current Grounding System Zero-Current Protection Setting 14 Low-Resistance Grounding System Zero-Current Protection Setting 15 Parallel Compensation Capacitor Protection Setting 16 SVG Reactive Compensation Device Protection 17 kV Asynchronous Motor Protection Setting 18 Synchronous Motor Protection Setting 19 Transformer-Motor Unit Protection Setting 20 Low-Voltage Motor Comprehensive Protection Setting 21 Intrinsically Safe Motor Protection Setting 22 0.38 kV, 0.66 kV Switch Protection Setting 23 Quick-Disconnect Device Setting 24 Automatic Backup Power Supply Device Setting 25 Frequency-Based Load Shedding Device Setting 26 Voltage-Based Load Shedding Device Setting Appendix A (Informative) Minimum Sens

Development Information

Related Standards