A new principle of UHVDC line pilot protection based on trigger angle control characteristics
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Abstract
A new principle of UHVDC Line pilot protection based on internal parameters of the trigger angle of converter is proposed, in order to improve the ability of the protection to withstand transition resistance. Through the analysis of UHVDC control system, it is found that, due to the regulation of control system, in terms of trigger delay angle of rectifier side and trigger leading angle of inverter side, the change tendency in internal fault and external fault is different. Thus, the protection criterion is constructed. Compared with the traditional protection principle using voltage and current to establish protection criteria, this principle uses internal parameters as protection quantity. The simulation based on PSCAD/EMTDC verifies the effectiveness of the protection principle.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 51607106
Funding source: Science and Technology Research Program of Hubei Provincial Education Department
Award Identifier / Grant number: D20171203
Funding source: Research Fund for Excellent Dissertation of China Three Gorges University
Award Identifier / Grant number: 2020SSPY067
Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: National Natural Science Foundation of China (51607106), Science and Technology Research Program of Hubei Provincial Education Department (D20171203), Research Fund for Excellent Dissertation of China Three Gorges University (2020SSPY067).
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Research Articles
- Analysis of arc existence in electrical contact gap for 42 V automotive DC components
- Research on influence of split conductor induced voltage on TRV
- Ultra mega power plant disturbance related oscillation detection in Indian grid using PMU data
- Implementation of medium voltage remote controlled switches to improve quality performance indexes – a case study
- A simplified method for fault detection and identification of mismatch modules and strings in a grid-tied solar photovoltaic system
- A model for calculating losses in transformer related to orders and harmonic amplitude under analysis of joule effect, eddy current and hysteresis
- A new principle of UHVDC line pilot protection based on trigger angle control characteristics
- A phasor-distance based faulty phase detection and fault classification technique for parallel transmission lines
- Study on the insulation characteristics of environmentally friendly CF3I/N2/CO2 mixed gas
- Development of thermal model for estimation of core temperature of batteries
- Analysis of power quality in a grid system connected with a three phase induction motor
- Research on the influencing factors of losses in 10 kV, 1000 kW induction motor
