A5067896732- Advanced Frequency and Time Standards
- Advanced Computational Techniques and Applications
- Smart Grid and Power Systems
- Smart Grid Energy Management
- Advanced Fiber Laser Technologies
- Image and Object Detection Techniques
- Semiconductor Lasers and Optical Devices
- Power Systems and Technologies
- Energy Load and Power Forecasting
- Smart Materials for Construction
- Smart Grid Security and Resilience
- Laser-Matter Interactions and Applications
- Industrial Automation and Control Systems
- Network Time Synchronization Technologies
- Microgrid Control and Optimization
- Technology and Security Systems
- High voltage insulation and dielectric phenomena
- Photorefractive and Nonlinear Optics
- Experimental Learning in Engineering
- Inertial Sensor and Navigation
- Structural Health Monitoring Techniques
- Solar Radiation and Photovoltaics
- Advancements in PLL and VCO Technologies
North China Electric Power University
2019-2023
China Electric Power Research Institute
2019-2023
Beijing Institute of Radio Metrology and Measurement
2015
CAS Key Laboratory of Urban Pollutant Conversion
2015
Beijing Zhenxing Metrology & Measurement Institute
2015
This paper gives a test method of BeiDou timing receiver delay. A System simulator and time interval counter were used in the experiments. During process, most important step is to calibrate delay simulator. The uncertainty this analyzed be less than 1.5ns. Using method, some typical Chinese commercial receivers tested, results are shown figures. variations with temperature have been studied.
With the development of BeiDou(BD) Navigation Satellite system, BD can be another choice for remote precise time and frequency transfer. A strict common view test using System is carried out in this paper. Since there are GEO, IGSO MEO satellites based on discussed paper separately. Finally, we give a different weight to each satellite according its elevation, get weighted-average common-view result which better than 5 ns.
The basic situation of NQI (National Quality Infrastructure) in the field smart grid measurement is introduced. Aiming at information requirement measurement, construction scheme and purpose one-stop service cloud platform are proposed. technical architecture studied, operation security management data access acquisition method designed accordance with current business situation, model based on application design discussed according to goal platform. Finally, further development its real prospected.
In new energy high permeability power grid, the uncertainty of brings great challenges to security and stability grid. This paper proposes an adaptive grid-friendly response strategy for commercial buildings based on cyber-physical system (CPS). Firstly, overall framework CPS with functions each layer is established. Then, procedure model asynchronous cooperative grid friendly constructed. Finally, simulation results show that proposed method effective reasonable in IEEE-14 case buildings'...
In this paper, the details of linear chirped femtosecond laser pulse used for timing synchronization when transferring in single mode fiber(SMF) and dispersion compensation fiber(DCF) are analyzed based on a numerical simulation. The broadening 416fs by 9.7m DCF then compression 33m SMF can be observed experiment. Based simulation experiment, design optical fiber transmission link which is made up femtosecond-precision fiber-optic system introduced.
We describe the idea of a high precise time-synchronization based on ultra-short pulse using auto-correlation method. The local train is generated by femtosecond laser system tightly locked to atomic clock. Then optical distributed remote location. backward propagating pulses and are combined applied second-harmonic generation (SHG) crystal auto-correlator which used for time delay measurements. compensation block constructed an line. have measured calibration curve system. synchronization...
Within the realm of electric power, empirical testing and detection operations encountered formidable issues encompassing a paucity automation in experimental equipment, pronounced degree signal heterogeneity among sensors, limited resource management sharing, dearth sophistication. In context image data, grounded principles projection inclination, we have proffered technological solution for processing content within measurement experiments. We devised hand-held devices that adeptly...
The problem of resource scheduling and task assignment in electric power measurement laboratory has the characteristics incomplete disorder single insert disturbance, which is different from shop scheduling, can not achieve efficient use resources. In view fact that current research on considered actual metering laboratory, objective this paper to minimize total completion time, a model joint tasks scheme reset disturbance are established, an improved genetic algorithm designed solve by...
Abstract This paper studies the technical framework and composition of large data cloud service platform for power energy measurement, discusses application scenario design government, enterprises users. Three typical scenarios city perspective, suspected theft intelligent diagnosis analysis residential load characteristics are discussed in detail. Finally, development its business field prospected.
Abstract One of the key technical research points in field smart grid measurement is to make a breakthrough detection and evaluation high availability materials intelligent equipment. The comprehensive cross-action multi-environmental stress brings lot data, how find parameters it, analyze complex environment into characteristic combination multiple single environmental factors, mathematical model nonlinear evolution service life material aging based on expression combination, all above are...
Aiming to control the industrial power demand characterized by strong fluctuation and impact, this paper studies multi-step forecasting problem of ultra-short term load. Based on integrated empirical mode decomposition method, signals with different frequencies are effectively separated decomposition. Then, long short memory neural network is used independently predict signal subsequences, finally subsequence prediction results combined. The experimental show that proposed method can well...