Forward and backward substitution method has been used as the power flow calculation method of any low voltage distribution network, and therefore utilization rate of electrical energy of the lines, transformer and line loss are obtained. These are the datum to assess the reliability of low voltage distribution...

Along with the people environmental protection consciousness enhancement, the enterprise and the family are inclined to use the green electric wire and cable to reduce the environmental pollution. This paper firstly introduces the concept of green electric wire and cable, and then expounds thecurrent...

High voltage cables intermediate joint craft is the essential technology during cable construction. In this paper, we firstly introduce the basic structure of high voltage cables, and then elaborate its production process and main precautions of high voltage cables intermediate joint, expecting that...

The electrical products industry is always the important industry in the field of industrial, is the basic industry of the level of economic development in our country. Therefore, with the rapid development of economy, it needs continually to improve some infrastructure resource allocation level of the...

With the constant innovation and development of the science and technology, the start and protection model performance of the motor is higher and higher. The traditional with the "star - triangle way" of the motor start under the condition of the starting torque can't be used. It can only be used to...

In this paper, we propose a novel methodology that classify the power system dynamics events patterns using neural network and wavelet through studying one single variable at a network bus. DWT allows the identification of components of the LFEO (low-frequency electromechanical oscillations), their frequencies,...

According to the structure characteristics of distribution network, this paper proposes a hybrid algorithm based on particle swarm optimization to process the calculation problem of three-phase power flow in less loop distribution network. Through the MATLAB simulation data, it can be seen clearly that...

When the circuit breakers between Yimin one, two and Yimin three period, the sending end system consisting of six 600MW generators of Hu-liao DC project will operate islanding. In the paper, three operation modes of the power dispatching and production department concerned were simulated, which the change...

For two subsystems cascaded DPS, the stability margin monitoring can be implanted via current/voltage perturbation method. But for N subsystems cascaded DPS, the stability margins are different at different interfaces, which results in the stability margin monitoring problem. This paper analyzes the...

The consolidation of the applicability of the method of communication, has the ability to coordinate the internal mode conversion only rely on distributed PLS signal DEM system has been developed. It has been shown, this coordination can be used for a plurality of battery application and Study on method...

This paper established two types of models of distributed power supply in PSCAD/EMTDC and connected these two power supplies in the power distribution networks with 18 nodes to simulate respectively under specified voltage control and specified power factor strategies. Then, the simulated data was loaded...

The paper proposes a novel low-voltage and low-power bandgap voltage reference, which has superior performance such as low-voltage, low-power and low-temperature coefficient. The simulation based on 0.18-um CMOS process of TSMC. The proposed circuit consists of current source subcircuit, a bipolar transistor...

A GPU-based parallel hybrid method is proposed to accelerate the electromagnetic scattering from electrically large complex structures in high frequency. The MPO and the GRECO hybrid method can simplify the computations of the diffraction fields of the wedges by modifying the surface-normal vector of...

Based on the practical engineering application, This paper analyses the inverter strategy of SVPMW. Aiming at the refining problem of sine function value table, on the basis of unrefined sine function value table, through additional two-stage filter, the inverting result of the inverter is greatly improved....

This paper designs a intelligent lighting system based on Arduino hardware platform and Yeelink cloud platform, and realizes remote control of the system through Android terminal devices. The system is low-cost and easy to set up, and have a friendly UI and other good features, which is suitable for...

The purpose of this paper is to research wind power fluctuation character of the wind farm. First, the qualitative and quantitative analysis methods are combined. Sliding difference algorithm is used to construct wind power fluctuations evaluation system. Calculating wind power fluctuations value volatility...

Low-voltage distribution network is at the end of the electricity network, directly connected to the user. With the rapid economic development, a substantial increase in power consumption, and low voltage distribution power grid construction and transformation rate is far less than the growth rate of...

As more and more distributed power access to distribution network system, distribution network planning based distributed generation technology will become a hot research. Depending on the relevant starting point for planning a distributed power supply can be divided into two cases: distributed power...

Energy internet provides a feasible technical solution to solve the problem of efficient use of renewable energy. Energy internet has certain unique in concepts, techniques, and methods with smart grid, distributed generation, micro grids. Therefore, the study of energy characteristics and implications...

Sunlight is constantly changing during the year, including a certain regularity random variation due to weather changes and the result. Thus, by the light on the photovoltaic power generation system is also in flux. Incorporated into the distribution network after PV, the network will change the trend,...

With the addition of automation system computers and communities equipment’s’, the security problem of computer’s room appeared. In addition, because of hugeness of the automation system and the complex of the software, hardware structure, the exceptional problem maybe appeared in the system. For real-time...

At present, China's smart grid construction has been in full swing, with the continuous development of smart grid technology, its business application systems with electric side is also gradually improved, to respect the distribution communications network bandwidth and higher reliability requirements....

Today in the promotion of energy conservation, as a clean and renewable resource, wind energy is enjoying more and more attention in the world. To overcome the uncertainty and other limitations of wind, people began to take advantage of high-altitude wind energy. Currently high-altitude wind power technology...

The unbalance responsibility of main unbalanced source is an important task of power quality management. This paper presents an unbalanced voltage liability index to measure the imbalance liability problem. Taking into account the power grid can quality monitoring system provides only statistical values...

A impulse heavy current grounding test system is designed to research impulse characteristics of grounding devices.Structure and test ability of the system are introduced. The system is composed of four impulse current generators symmetrically installed around a return electrode with 20m radius. Each...

The differential study of electronics for rear-wheel drive was studied recent years, the output speed is the system variables and the PID control strategy is the base, system strategy for rear-wheel drive was designed and differential system was simulated. Results show that through the calculation and...

Permanent magnet synchronous motors (PMSM) generate high-frequency electromagnetic vibration and noise when powered by inverters and the cause is high-frequency electromagnetic exciting force (EMEF). In this paper, the frequencies and orders of EMEF are analyzed. The expression of EMEF acted on the stator...

Short-term load prediction of power system has great significance for safety and economy of power system operation as basic content of power system operation management and real-time control. In the paper, power system short-term load predicting model based on RBF neural network was established. Influences...

As an important part of power transition, the safe operation of substation is of great significance. In this paper, according to the characteristics of the substation equipment overheating fault and the theory of mathematical model of support vector classifier, equipment overheating fault diagnosis mechanism...