With the smart electricity meters heavy using, efficient and reliable network and transportation protocol are becoming more and more important to collect energy data from the meters. This paper proposed a new network topology for data collection from large amount resident energy meters. This topology...

Dynamic management in current-carrying capacity of overhead transmission line is a significant application in smart grid. Dynamic management technology in current-carrying capacity is to establish measurement information relationship model of conductor temperature, ambient temperature, wind speed, wind...

Vast photovoltaic powers connect into power distribution network Distribution Network. These PVs are large in quantity and scattered, make grid difficult in monitoring, which will bring challenge to the safety and stabilization of power grid. It is very necessary to get related monitoring data of PVs....

In order to improve the measurement precision of infrared sight line alteration,a new adaptive correction algorithm of CCD camera pose small angle changing was proposed.Through the theoretical analysis,a mathematical model of the CCD camera pose calculation was established and a camera pose calculation...

Based on the current rapid popularization and development of electric vehicles, serious environmental pollution and energy shortage problem, this paper researches the impact of the distribution network with distributed generation when the electric vehicles joining in the optimal operation. First, establishes...

This paper presents an improved model of multi-DGs system for analyzing the system stability during grid-connected. The DGs, in the system, are equipped with the Sandia frequency shift (SFS) scheme as anti-islanding protection technique. Relationship of system parameters, such as the length of distribution...

A large proportion of power loss in distribution system is from transformer, which is not considered in the traditional Distribution network Reactive Power Optimization (DRPO). This paper proposes a DRPO model considering the power loss of transformer. The optimization method includes reactive power...

Haze-fog has been a severe pollution weather phenomenon in China due to a large number of emissions of pollutants with the rapid development of economy. The areas burst haze are usually coincidence with high density of electricity transmission line corridor or power load areas, and so the pollution flashover...

The power grid data quality is the key factor which will affect various applications of smart grid power dispatch control system, and Power system state estimation results implied the problems in power grid data. The existing state estimation evaluation index is relatively single, and the analytic result...

A new method of extracting interference fringe phase is proposed. Firstly, the interference fringe was transformed from the spatial domain into the frequency domain using the Fourier transform. The positive spectrum carried the wave-front information. Secondly, the digital filters were design to filter...

This paper provides a new scheme for wireless power transfer (WPT) technology based on magnetically coupled resonance. The technology is used to solve the problem of reliable power supply for the monitoring terminals of high voltage power grid (HVPG). Because the technology takes the magnetic field as...

This research project applies solar energy photovoltaic power generation system to remote rural residences in order to solve the power consumption problems of the villagers. And this project is the first demonstration project of the application of new energy—solar energy, in the production and life at...

Currently, the operation management of energy meter is still using regular maintenance and maturity rotation mode. With the recent popularity of electronic power meter, new online monitoring methods for electric power meter have improved greatly. In this background evaluation model for electric power...

Accurate fault location is helpful to improve the stability of power distribution network. With the integration of distributed generations and electric vehicles, the traditional distribution network gradually became the active distribution network, which requires new technologies for fault location....

With the constructions of new-type towns, power demand in the towns grows constantly. In this paper, we have analyzed new features of towns and power utilizations in the new circumstances, and promoted morphological characteristics of distribution networks for new-type towns. We have stated several indicators...

This paper, by comparing the existing problems of distribution network technical transformation and the advantages of energy management contracting, puts forward the necessity of the implementation of energy management contracting mode of distribution network transformation of the power grid enterprises,...

In order to solve the problem that simulation accuracy and simulation flexibility is difficult to take into account in real-time simulation of high frequency converter, a real-time multi-rate simulation method based on FPGA+PC is proposed. This method fully demonstrated the simulation principle of multi-rate...

It may lead to low frequency oscillation in interconnected power grid if part of the lines of power transmission section are disconnected. Reducing the output of generators in sending end urgently is an effective measurement to restrain oscillation, and different control strategy may lead to different...

Low frequency oscillation has been a serious threat to security and stability of power grid, and how to locate the disturbance source accurately is an important issue to suppress low frequency oscillation. The existing location method has poor adaptability to oscillation with time-varying steady points...

with the development of wind power industry,the numberof wind turbines connected to grid is increasing,so the inevitable question follows,especially the fault information.In view of the difficulty in locating the accurate position of wind turbine failure,a new wind turbine fault encoding method is proposed...

To solve the problem of Back Propagation (BP) neural network easy to get in local least value and the initial weight is chosen randomly, Principal Component Analysis (PCA) and Genetic Algorithms (GA) were introduced to the BP Neural Network to achieve their complementary advantages. Based on the BP neural...

At present the nonstandard power quality monitoring systems have caused many problems such as high construction and maintenance cost and poor interoperability. In order to implement a standardized power quality information platform for multisource information fusion, IEC 61970 and IEC 61850 are designed...

The accuracy of fault detection is helpful to improve the stability of power quality. With the development of new energy, the technology of flexible HVDC transmission has been gradually mature, but there are still some problems. In this paper, the Mallat algorithm is used to detect the DC line fault...

Wireless energy transmission technology is an important research field in recent years, and has a good research value and application prospect. Wireless energy transmission technology: short electromagnetic inductive coupling transmission technology, medium range of electromagnetic coupling resonance...

The current smart grid architecture, which has two-level data centers and two-level operation applications, is faced with many deficiencies. In order to solve these problems, this paper puts forward a distributed system architecture based on IEC 61850 remote terminal unit (RTU) data transmission scheme....

Surface soil moisture is a significant parameter in environmental systems. A new sensor capable of estimating surface soil moisture from reflection data is presented, called near-infrared reflection sensor. Relative reflectance method is used for prediction model development. The present study investigated...

In this paper, the power system blockset in Matlab/Simulink is applied to build a one-machine infinite-bus system to simulate the actual power system. The power system static stability will be discussed according to the severity of disturbance. Also simulation analyses and improvement measures will be...

Faced with the challenge that resource depletion and environment deterioration, an important energy-saving measure by enhancing electric motor efficiency has been adopted around the world. With the development of measurement uncertainty of electric motor, for conventional motor efficiency evaluation,...

The model of lighting direct strokes on 10 kV distribution line in Guangzhou was built and the transient procedure was considered based on the software of PSCAD/ECTDC. The effect of arrest and ground resistance operating maintenance on lightning overvoltage in distribution networks has been discussed....

With the current distribution network automation construction gradually promotion, distribution automation terminal large-scale applied in various regions of the country power grid. In the maintenance of distribution automation terminal operation, many problems was discovered to be widespread, such as...

The Chinese economy is developing rapidly, the demand for energy is getting more and more intense. With the development of coal mine, the utilization of gas is getting more and more important, and the numerous gas generating units will be connected to the power grid. Due to the characteristics that the...

A 10 kV High Temperature Superconducting power substation with a cooling system was developed and has been put into operation in power distribution system for more than three years. The working conditions, heat resource and the distribution character of the four apparatuses working at the 10 kV/630 kVA...

Nowadays large numbers of multiaxial UAVs are applied in the civilian field. The security of operating UAV has been upped to new levels. It has now become urgent to solve the problems of training high-quality UAV operators and effectively evaluating their training results. The article attempts to introduce...