An information architecture of state monitoring substation equipment system is proposed based on IEC 61850 and IEC 61970. A substation equipment state monitoring and integrating platform (CMIP) supporting the unified information model and unified communication interface is designed and implemented. In...

Oxygen and nitrogen molecules in liquid air may segregate in gradient magnetic field, which has potential applications in medicine, industry and other fields. According to the segregation behavior of magnetic nanoparticles in gradient magnetic field, magnetic drug carrier particles can be directionally...

This paper analyzed source and proportion of waste heat resources in power, and expounded characteristics and utilization way. It also indicated of rotary air preheater in the advantage position of waste heat utilization, but was some shortage. Finned heat transfer was enhanced a development direction,...

In this paper, we decompose the electricity consumption changes of the whole industries of Shandong province in 2006 -2012 into activity effect, structure effect and intensity effect, using LMDI method. The results show that the expansion of economic volume mainly attributes the electricity consumption...

According to the DC and AC distribution system with the classified load, the maximum transmission capacity is calculated. The price of the main devices in the distribution system including DC breaker, DC converter, etc. is analyzed. Taking the proposed 10kV AC, ±7.5kV DC and ±15kV DC distribution system...

Based on the study of combined cooling, heating and power (CCHP), this page constructs penalty function under the constraints of energy saving and emission reduction. It is a overall optimization system combining energy saving effect, emission reduction effect and economic effect in CCHP system in the...

The power load gradually increases with the development of the city construction which highlights the optimization of power grid dispatchent, and in which a new computer system, the GIS short for Geographic information system plays an important role. This text on basis of introducing GIS conotation,...

This paper firstly gives the scheme of the Multi-Energy Coupling System (MECS), which can be applied to college campuses. On the basis of the traditional Combined Cooling Heating and Power System (CCHP), we add solar photovoltaic and electric car into the MECS. Secondly, we establish the mathematical...

This paper first distinguishes the Multi-Energy Coupling System (MECS) from the Energy Internet and the Integrated Energy System, and defines technique features of the Multi-energy Coupling System. Then, on the basis of the CCHP technical proposal and the photovoltaic configuration, a MECS design scheme...

The stability of high energy consumption data acquisition system in addition to the traditional energy consumption data acquisition, processing and upload function, but also on the acquisition of communication protocol is analyzed and improved, to improve the accuracy of the data. Design breakpoint transmition...

This paper proposes a current compensation system for dc offset in transmitting digital-analogue converter (auxiliary DAC) firstly, which solves the DC offset existing in DAC output current. It greatly enhances the flexibility of the output DC offset controlling and improves the consistency of output...

A low design of condition-triggering shift registers on Silicon for display was proposed, which has a new circuit structure of input driver clock. The design only allows certain clocks to enter the register, so that the dynamic power has been reduced. It has been demonstrated that the proposed structure...

By using the multi-physics simulation software COMSOL, the pre-breakdown-heating phase in the electro-thermal breakdown of conductive water is modeled. In this COMSOL model, the Joule-heating module (jh) and the electric circuit module (cir) are used together to simulate the time-evolution of the temperature...

Based on Tianjin 220kV power grid topology structure and protection setting configurations, the alarm steady information is mined deeply. Moreover, the big data of SCADA steady information is took full advantage to realize the accurate judges of all kinds of device tripping and the auxiliary information...

In order to clarify the differences of partial arc propagation process and flashover process between uniform and un-uniform contaminated insulator strings, experiments of flashover characteristics on uniform and un-uniform contaminated insulator strings have been made in this paper. The result indicates...

The "Electric power alternatives" scheme proposed by China State Grid Corp in 2013, aiming at replacing coal and petroleum by electricity in terminal energy consumption. Based on Gray wavelet neural network model, a multi-scenarios analysis method is designed to predict the terminal energy consumption...

Accurate and reliable electricity price forecasting is essential for market participants to make various decisions in the deregulated electricity market. However, due to the time-variant and nonstationary of price, which is related to change of market competitors' strategies, predicting price accurately...

According to the market demand for high resolution cell phone camera,a 13 mega-pixels camera lens applying aspherical surfaces is designed using the ZEMAX optical design software. The lens is consisted by four pieces of aspherical plastic lens, an optical filter and a piece of protection glass. The lens...

In this paper, to determine whether an economically attractive opportunity exists in space debris removal industry, we establish a Commercial Opportunity Evaluation Model. Based on costs, risks and benefits models, we formulate an evaluation function: COM=Benefits (1-Risk)-Cost. When is greater than...

In this paper, we build the Time-Dependent Alternatives Evaluation Model to determine the best alternative or combination of alternatives to remove the space debris. The model is consist of three small models, such as Costs, Risks and Benefits models which are time-dependent models. After consulting...

In the paper, we research how to locate the crash area of the lost plane. We take ocean currents, wind-driven currents etc. into consideration. Defining the best searching radius , we can obtain the best searching area. Wreckages are moving, we renew the searching area using . And we color these circle...

In this paper, we establish a Temporal-Spatial Distribution of Space Debris Prediction Model based on Kessler model. We deduce debris' flux and the probability that space objects be hit by debris in certain space-time. Next, we make predictions about debris' distribution with different diameters, in...

This paper main provides some mathematical methods to calculate the distribution of the space debris and the damage they brought each year. Through the statistical data recorded by NASA, we can get the flux and the amounts through Kessler model. When combined with NASA's Break up model, the debris' classification...

The traditional estimate method adopted man-made calculation as for the satellite tracking and control link level. But this model was simple for the most of calculation was adopted the experience data, and did not think over the complicated influence factor. In order to do better on the estimate precision...

Combining efficiency with previous research, this paper from the perspective of outgoing feeders start by analyzing a shipborne USB full-band solid state power amplifier VSWR test data, concluded: transmit power and there is a certain function of SWR, VSWR the frequency greater than 1.4 SSPA unable to...

In order to reduce far-end crosstalk between LTCC microstrip lines, this paper proposes a novel structure that has an air-cavity in dielectric layer. Simulation model of LTCC microstrip lines was set up by using Ansoft HFSS, the far-end crosstalk (S14) was obtained, the effects of cavity height, cavity...

The motion behavior of droplets under non-uniform electric field is an important branch of the study of electro-hydrodynamic. In this paper, the theoretical analysis of the force of droplets in the non-uniform electric field are carried out, and the study found that the deformation, surface charge density,...

The track fluctuation of helicopter pod used for magnetic survey can cause interference with magnetic field measurement results. By simulating the small fluctuation of inclination angle and drift angle,the pod track fluctuation in airborne coordinate system and the helicopter track fluctuation in geodetic...

In this study, a three-dimensional model was developed by using CFD and TRACE to simulate the flow behaviors and thermal-hydraulic phenomena in the downcomer and lower-plenum of Maanshan PWR nuclear power plant (NPP) reactor pressure vessel (RPV). Detailed geometries of vessel components such as neutron...

Small hydro-power generation shows strong uncertainty, which greatly affects the load forecasting work in small hydropower regions. Thus it's important to improve the accuracy of small hydropower generation load forecasting. At present, the most commonly used forecasting method is artificial neural network,...

Conventional geolocation techniques include the time of arrival (TOA), the time difference of arrival (TDOA), the angle of arrival (AOA), the received signal strength (RSS) ,the fingerprint positioning based methods and etc. Among these location techniques, a method based on RSS has attracted much attention...

Localization of mobile station (MS) has now gained considerable attention. Since the transmit power and path loss exponent (PLE) are two critical parameters in received signal strength (RSS) localization technique, many RSS based location methods considering the case that both of the transmit power and...

Advanced hydraulic torque converter is a key component of paper interactive surface technology based on steady-state, the authors established a torque converter flow field calculation model. Using the method of CFD simulated the stator flow field, and the results were validated by experimental data....

Presence of echo is one of the challenges when using ultrasonic for transmitting data through the steel. The model of multipath channel in the ultrasonic through-steel communication system is described and the method of echo cancellation is analyzed in this paper. This method applies a pre-distortion...

Cognitive radio (CR) technology provides a new approach to solve the problem of wireless spectrum resource scarcity by allowing secondary users (SUs) to access the licensed spectrum in case that SUs do not interfere primary user (PU). One of the most challenging tasks in CR is spectrum sensing. This...

In this paper, a micro-power wireless and low voltage power line carrier double channel meter reading scheme is proposed. The two communication channels of this scheme coordinate and supply each other, which takes the full advantages of each channel. The high real communication success rate and the accuracy...

In the paper, an improved plan is proposed based on AES encryption algorithm. Complex mix-column operation in the AES implementation process is simplified by the improved plan, and an anti-power attack technology is further proposed on the basis of implementing the improved plan. The technology is based...

Wireless sensor network (WSN) is an emerging technology which integrated sensor technology, embedded computing technology, modern network, wireless communication technology, distributed information processing technology. This technology has wide applications. With the development of technology, WSN will...

SAR dual-channel cancellation technique can suppress the scatter-wave jamming of single jammer, so the scatter-wave jamming method of multi-jammers for SAR dual-channel cancellation system is proposed. First, the scatter-wave jamming suppression principle of dual-channel cancellation is reviewed. Then,...

The hardware and software design scheme of the single board micro digital relay protection device is introduced in this paper. The hardware platform of the device is based on AM5728 embedded multicore processor of TI (Texas Instruments) Company which has ARM cores and DSP cores. The software platform...

Surface-electromyography (sEMG) is a kind of weak physiological signals. During the sEMG signals measurement, the motion noise caused by body movement can easily affect measurement accuracy. In order to prevent the noise, we designed a method to adaptive noise cancellation combined with wavelet transform...

This paper studied characteristic of two typical grid-side traction converters of CRH series electric multiple unit(EMU)-CRH2 two-level rectifier and CRH5 three-level rectifier. Firstly, the topology structures of two typical rectifiers are analyzed. Then SPWM modulation method, transient direct current...

The energy issues which is in the internet of thing technology for smart home application is an important problem. Due to the sunlight, energy consumption of lighting cause the unnecessary power utility. This study proposed an economic lighting management system for smart home application. The economic...

Recently, various optical networks have been proposed for chip-scale communication on large-scale many-core chips, including optical burst-switching (OBS). The overall throughput of OBS network is dually constrained by congestion and loss in both the data-plane (i.e., burst contention) and the control-plane...

The logistics process improvement scheme is described in this paper using AR (augmented reality) and mixed RFID (radio frequency identification) technology. Now, the augmented reality and RFID technology are well known and widely applied in practice, they are merged together can enhance the visual function...

Power system is an important part of power electronic technology application domain. With the rapid development of electronic power components and computer technology, power electronic technology has been widely used in power system. It is of great value and significance in stable operation of power...

With the rapid development of information technology, radio frequency technology application has become an important symbol of intelligence realization. According to the requirements of intelligent bookshelf system, this paper analyzes and designs intelligent bookshelf system structure from two aspects...

In recent years, the application of laser point cloud data has increased dramatically. How to efficiently store and fast process the data becomes an important research direction at present. Point cloud data contain a wealth of geographic information, belonging to the category of spatial data. Traditional...

As a significant component of phase interpolation based clock and data recovery circuit, the multi-phase clocks generator is used to generating multi-phase clocks for data sampling. Employing the gain-boosting charge pump and the replica bias differential voltage controlled delay line for a 1.6~2.5Gbps...

To the RFID system,Multiple reader and transponders deployed to meet the diversity applications, heterogeneous networks, diversity of service application system, lead to the decline of recognition, data transmission delay and signal integrity performance problems. Collaborative anti-collision algorithm...

Electric energy has become an important energy source in today's society. However, there has been a lack of safe, reliable and effective real-time fire monitoring solutions for high voltage switchgear, transformers and other critical electrical facilities in power plants and transformer substations....

This paper briefly introduces measurement principles of Nondispersive Infrared (NDIR) carbon dioxide (CO2) sensors as well as summarizes performance characteristics of NDIR CO2 sensors, factors affecting the accuracy, calibration methods, market situations and trend of NDIR CO2 sensors.

Photonic crystals with liquid-crystlal materials are extensively studied for their tunabilities. However, until now the studies mainly focused on the tunable photonic band gap properties. In this article, the tunable self-collimation in liquid-crystal-filled photonic crystals is discussed in detail....

Analyze the application of resonant voltage withstand test in the XLPE cable voltage withstand test, and the two methods of variable frequency resonant voltage withstand test were compared by an example. By comparison, the resonant voltage test method can effectively simulate the field voltage withstand...