Distribution Automation Communication Research Articles

Applied Research on Intelligent Collection System of Positioning Information for Multi-source Heterogeneous Distribution Communication

Abstract In order to better realize the intelligent perception of fault location information of power distribution communication access networks in different scenarios, this paper carries out the construction of a power distribution communication network system through industrial Ethernet technology combined with EPON technology under fiber optic communication technology. Based on GIS technology and combined with OTDR technology, we constructed a fault location system for the fiber optic cable of the power distribution communication network so as to realize the acquisition of fault location information. From the multi-source state information, the joint Kalman filtering model is used to excavate the characteristics of the grid operation state, and then the fusion of multi-source heterogeneous data of power distribution communication is realized. To verify the effectiveness of the distribution communication network system constructed in this paper for locating fault information and intelligently collecting power consumption, system tests were conducted. The results show that the relative error of the node voltage estimation of the joint Kalman filter algorithm is below 0.015%, which improves the accuracy of fault identification in the distribution network. The system constructed in this paper for information transmission connectivity testing PON port light-emitting power range of 2~6dm, receiving optical power greater than -25dm, each PON port without power overload. This shows that the distribution automation communication network constructed in this paper meets the information collection requirements, and the construction of an intelligent distribution communication network can meet the requirements of distribution automation and can also accurately collect the fault location information of the distribution network.

Distribution Automation Oriented Research on the Adaptability of the Communication Network Technologies

The traffic of the distribution automation communication network under different size and applications is analyzed based on the communications models. From the network availability and the resource utilization, the distribution automation adaptability is compared with the different communication networks combined with the current main power terminal communication network technologies. The results provide an important theoretical basis for the planning of the distribution automation communication network.

Utilizing Indicator Computing Assistant to Facilitate Distribution Automation in LTE Wireless Private Network

Concerning the communication infrastructure pertinent construction guidelines, China South Power Grid (CSG) has clearly defined and detailed the data network equipment quality control, test and check. This paper proposes two indicators to monitor the power distribution automation in LTE private wireless network. The first one is the distribution online ratio (DoR), which evaluates the effect of distribution automation infrastructure construction. The second one is distribution tunnel integrity ratio (DiR), which reflects the availability of distribution automation communication tunnel. Furthermore, an indicator computing assistant (ICA) is developed to collect the data of two indicators transmitted by the large number of custom premise equipment (CPE) in LTE private wireless network in a computationally efficient way, which frees the conventionally demanding human and computing resources..

Research of Distribution Network Communication Based on P1901

Medium voltage broadband power line communication is the key component of distribution automation communication. In this paper, medium voltage broadband buried cable communication system was studied. The buried cable communication channel model was established; Reference to the IEEE P1901 standard requirements, the broadband power line communication system based on OFDM was simulated; the transmission rate was tested with the experimental system. The simulation results and actual tests show that the broadband buried cable communication system has good performance and high transmission rate which can meet the requirements of distribution network automation.

An open communication architecture for distribution automation based on IEC 61850

A typical distribution automation system contains a great amount of remote terminal units (DRTUs) which along distribution feeders and communicate to a master station in the control center. To improve the interoperability and realize plug and play of DRTUs, this paper proposes an open communication architecture based on IEC 61850. First the requirements of distribution automation communication are studied and the communication system and functions are divided into four levels, master station level, circuit level, terminal unit level and process level. The logical nodes are added for distribution feeder fault detection. And the information exchange models are also extended. The Discover/Register model is defined for auto discovery of DRTUs. Mapping the information model and information exchange model to the standard communication protocols is studied. A new mapping method (Web Services+IEC 60870-5-104) is proposed, using Web Services for information model exchanging and IEC 60870-5-104 for transmitting real-time data. A prototype system was also developed and verified in the communication architecture.

Power Distribution Automation System in Green Power Engineering

Not only distribution automation system but the principle of the existing means of communication are studied systematically and distribution automation communication system model based on IP network is provided. Backbone network is set between master station in the control center and substation sub-station. Communication between electronic station and terminal connections rely on the branch network. Simulation experiment shows the test of data traffic and network delay of IP communications network. In the actual network environment the data refresh meet the application requirements. So the program on the improvement of distribution automation communication in this article is feasible.

A Survey of Communication Technology in Distribution Network

With the development of the smart grid technology, power distribution network puts forward a higher request for transmission bandwidth and reliability. First, we analyze the characteristics and the business needs of the distribution network. Then we analyze the distribution network communication technologies, both wired and wireless. Based on our analysis, we should combine various communication technologies according to the comprehensive economic and technical indexes in power distribution automation communication system.

配電線自動運用システムを用いたエアコン直接制御システムの開発

配電線自動運用システムを用いたエアコン直接制御システムの開発

Measured data transmission performance for AM broadcast-VHF radio distribution automation communication system

The measured data transmission signaling performance for an AM broadcast (outbound) VHF radio (inbound) two-way distribution automation system is presented. The performance data are presented as a function of signal level, transmission path length and time of day. The outbound link, which uses inaudible low-speed phase modulation of the carrier of a standard AM broadcast station, demonstrated overall average signaling success rates of better than 99% in operational transceiver units. For the 154 MHz VHF return link, which used unconventional low-speed amplitude modulation resolved by a real-time FFT detector-receiver, the measured overall signaling success rate averaged about 60%. >