A5100338605- Power Quality and Harmonics
- Magnetic Properties and Applications
- Electromagnetic Compatibility and Noise Suppression
- Smart Grid and Power Systems
- Machine Fault Diagnosis Techniques
- Power Systems and Renewable Energy
- Oil and Gas Production Techniques
- High-Voltage Power Transmission Systems
- Mechanical Failure Analysis and Simulation
- Urban and Freight Transport Logistics
- Evaluation Methods in Various Fields
- Supply Chain and Inventory Management
- Advanced Computational Techniques and Applications
- Reliability and Maintenance Optimization
- Microgrid Control and Optimization
- Power Transformer Diagnostics and Insulation
- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Power Systems and Technologies
- Real-time simulation and control systems
- HVDC Systems and Fault Protection
- Fault Detection and Control Systems
Beijing Jiaotong University
2022
Tianjin Chengjian University
2020-2021
Jiangnan University
2019
Chinese Academy of Sciences
2014-2017
Institute of Electrical Engineering
2014-2017
University of Architecture, Civil Engineering and Geodesy
2013
Anhui University
2013
Tianjin University
2004-2012
Reciprocating compressors are important equipment in oil and gas industries which closely relate with the healthy development of enterprise. It is essential to detect valve fault because failures account for 60% total failures. For this field, an artificial neural network (ANN) widely used, but a complex not suitable its low accuracy easy overfitting. This paper proposes diagnosis model reciprocating compressor based on one-dimensional convolutional (1DCNN). method takes differential...
Reciprocating compressors play a vital role in oil, natural gas, and general industrial processes. Their safe stable operation directly affects the healthy development of enterprise economy. Since valve failure accounts for 60% total failures when reciprocating compressor fails, it is great significance to quickly find diagnose type fault diagnosis compressor. At present, based on deep neural networks requires sufficient labeled data training, but real-case (VRRC) does not have enough train...
As the widely use of electronic equipment and limitation distribution lines, power quality issues have been more critical, quantifying quality, monitoring disturbances are getting attention. It crucial for electric compensation improvement electrical safety to analyze locate disturbances. Because that most time-frequency algorithms cannot take both time frequency resolution into account, an improved S transform based on sigmoid function which is used adjust window width factor proposed...
Real-time simulation of modular multilevel converter (MMC)-based HVDC is one the most important and difficult technologies in area power electronics research. This paper presents a methodology for hardware loop (HIL) CPU/FPGA-based real-time one-terminal MMC up to 468 levels using detailed equivalent model, system based on full-scale physical control system, including actual sub module boards. The testing subject accompanying are same symmetric structure, without expensive third part HIL...
The switched capacitor active filter is different from the traditional filter. It removes requirement for a large current or voltage source, which leads to reduction in cost and physical size. A control method that combines neural network technology with hysteresis band presented. Through training can learn rules by itself replace real comparator power converter control. computer simulation results show this filter's advantage.
In the distributed generation system, resonance between power factor correction capacitors and line parasitic inductors may cause significant background voltage harmonic amplification phenomenon. order to solve this problem, paper firstly analyzes propagation law of harmonics on transmission line. Then, proposes a suppression scheme for medium benchmark network with long distance shortdistance As features are different, cable, R-APF (resistor active filter) can be used short novel APFNode...
A shunt hybrid active power filter (APF) as harmonic generator taken to the DC link of inverter eliminates wave generated by in this paper. Control is mixed fuzzy logic control and hysteresis uses digital signal processor. The value DC-link inductance APF kept invariableness method, which made generate harmonics current compensated accurately. In system, it allows test validate easily different or voltage control. system investigated analytically well experimentally. obtained results are...
The paper is talked about a new current tracking control method for low-voltage high-power active power filter. main circuit topology of APF adopts three-phase three-line voltage source converter, which constituted by three H-bridges. Current determines the performance. For APF, switching frequency system difficult to improve, resulting in relatively narrow bandwidth loop, affects stability APF. How solve and contradictions become critical. This presents hybrid strategy, can achieve ideal...
In the process of compensation current reference estimation for three-phase delta-connected active power filter (APF), fast dynamic response and high accuracy are required. Zero average in each phase must be obtained under asymmetric currents because split dc-link capacitors H-bridge converters. view these problems, transformation relation between references load is derived based on theory reactive admittances network. Using this transformation, APF can decoupled into three single-phase...
After the regional blackout, power system is to find stable black start units since launch of grid as soon possible restore, while in select unit enforcement serial recovery or parallel recovery, there no specific guidance method until present. In this paper, comparative study strategy which concern optimize period time generation for target and first divide into several subsystems, then subsystems at same time. Finally, 10-machine 39-bus used illustrate these methods.
In the detection substation microcomputer AC sampling system , monitor three-phase voltagethree-phase current power factor ,power online in real-time. This paper describes a FFT designing idea of synchronous from monitoring parameters .It provided and calculation methods to apply DSP, MCU measurement signal details mathematical model electrical digital sampling, introduction schematic diagram hardware processing FFT, comparison realization software MATLAB simulation, thus obtained...
This paper discusses a novel topology and new control method of unified power quality controller (UPQC), in which the conventional UPQC was divided into voltage compensation section current respectively. The comprises source inverter connected to grid series by single-phase boost transformer. While employs three-phase switched capacitor parallel. In this topology, volume total costs can be effectively reduced. scheme has been proved work simulation Matlab also have good effect.
The transformation of the maintenance mode railway freight trains prompts companies to upgrade existing equipment. In order avoid huge risks associated with fixed asset investment, it is great significance steadily promote upgrading this paper, mixed-integer linear programming model used minimize investment cost enterprise, and equipment purchased in batches steps. Based on reliability function, failure information parts transformed into demand, sensitivity analysis carried out parameters...