A5101442163- Power Quality and Harmonics
- Power Transformer Diagnostics and Insulation
- Machine Fault Diagnosis Techniques
- Power System Optimization and Stability
- Low-power high-performance VLSI design
- Flood Risk Assessment and Management
- Advanced Battery Technologies Research
- High-Voltage Power Transmission Systems
- Energy Load and Power Forecasting
- HVDC Systems and Fault Protection
- Power Systems Fault Detection
- Power Line Inspection Robots
- Advancements in Battery Materials
Xi'an Jiaotong University
2021
North China Electric Power University
2016-2017
This paper discusses the sensitivity of programmable logic controllers (PLCs) to voltage sags based on mechanistic analysis and numerous tests. First, sag caused by different values rated working is shown through an power supply discrete input/output modules PLCs. Second, a detailed sag-tolerance experimental scheme proposed, PLC curves that differ from early are established several Experiments conducted with nine typical The input researched first, then, effect key characteristics sag,...
The classification and recognition of voltage sag disturbance sources is the foundation mitigating sags. This study analysed characteristics various kinds sags, including sags caused by short-circuit faults, energising transformers starting large induction motors. According to features different sources, an evaluation index set was formed three-phase unbalance factor, duration ratio increments second harmonic. After that, weight each element calculated analytic hierarchy process. A novel...
In recent years, with the wide application of power electronic devices and stringent requirement industrial process, voltage sag has caused much attention in many countries. To design effective efficient mitigation management strategies, it is essential to have accurate classification sources. this study, based on analysis massive events grid recorded by online quality monitoring systems several different regions China, a more extensive practical sources given. The sags are divided into...
The sensitivity of PLC to voltage sags have been present in many papers recent years because the increasing concern sags, but claims most either from earlier standards or references such as corresponding books published 2000. Because renewal rate technique, validity conclusions drew more than a decade ago may be reconsidered. At same time, it's necessary determine difference between tolerance performance PLCs and previous sags. In paper, three PLCs, which are used widely at present, namely,...
Flood disasters often occur in summer and autumn. control refers to flood prevention. Corresponding measures means shall be taken according laws characteristics of mitigate or avoid hazards ensure the economic development cities regions. For some similar underground garages, unattended substations other sites, this paper proposes design an automatic gate, which is great significance normal safe operation above sites. The combination ACA (Ant Colony Algorithm) genetic algorithm applied...
With the change of operation mode and structure power system, requirements for stability grid reliability supply are getting higher higher, it has become inevitable to maintain, overhaul test transmission equipment by live working. The causes system accidents very complicated. Apart from natural factors, they generally caused defects in manufacturing, improper design or installation, ineffective maintenance repair. Therefore, based on ANN (artificial neural network) algorithm, this paper...