The Influence of Motor Low Voltage Trip on under-Frequency Load Shedding in the Electric Network of Refinery Enterprise

Tian Zhen Han; Qi Yang; Yun Ting Song; Xiao Jun Tang; Qing Kui Guo; Yong Yu Yuan; Jian Jun Sun

doi:10.4028/www.scientific.net/AMR.732-733.1119

Paper Titles

Design of Eddy Current Retarder Generator/Starter Integrated System
p.1101

Design of Fuzzy Self-Tunning Controller for Permanent Magnet Synchronous Motor
p.1105

Pitch Control for Smoothing Doubly Fed Induction Generator Rotor-Side Power Fluctuations
p.1110

Speed Control of Switched Reluctance Motors Drive System Based on Fuzzy Control
p.1115

The Influence of Motor Low Voltage Trip on under-Frequency Load Shedding in the Electric Network of Refinery Enterprise
p.1119

The Novel Control Technologies Used in Permanent Magnet Synchronous Motor
p.1125

A Novel Power Limiter Based on Newton-Raphson Method for Doubly-Fed Induction Generator under Unbalanced Voltage Drop Conditions
p.1129

Analysis for Impacts of Internal Impedance on the Load Characteristic of a Permanent Magnet Synchronous Generator
p.1135

Automatic Measurement of Stator Resistance for Permanent Magnet Synchronous Motors Based on Simple Linear Regression Model
p.1142

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 732-733The Influence of Motor Low Voltage Trip on...

The Influence of Motor Low Voltage Trip on under-Frequency Load Shedding in the Electric Network of Refinery Enterprise

Abstract:

A simple frequency response model is generally used in UFLS (under-frequency load shedding) design, without considering the impact of voltage on the frequency. In fact, in the case of large active and reactive shortage power, the system will suffer from the low voltage problem by the emergence of low frequency, which easily leads a large number of motors tripping due to low voltage protection trip in the UFLS process. The influence on UFLS is compared and problems needed to solve are put forward.