Distributed storage and parallel mining method for state monitoring data

The invention relates to a modeling method for high-voltage equipment on-line monitoring systems based on international electro-technical commission (IEC) 61850, which comprises the following steps of: regarding all objects of all high-voltage equipment on-line monitoring systems as a whole; and performing integrated modeling by adopting a layering and classifying mode based on the IEC61850 standard, wherein a relay protection model of a logic node layer is a relay protection general model of a transformer substation. By the modeling method provided by the invention, on one hand, complicated modeling processes of a traditional scheme are reduced and correction and reliability are improved; and on the other hand, a project is easier to implement by adopting a mature modeling scheme.

Modeling method for high-voltage equipment on-line monitoring systems based on international electro-technical commission (IEC) 61850

The invention discloses a method for integrating a power equipment state monitoring device. The technical scheme is that: a seamless communication server consists of a communication interface, a protocol converter and an ACSI server, and an IEC 61850 client is directly connected with the ACSI server; and transmission and transformation state online monitoring devices in different types are accessed through the provided communication interface. In the method, a mapping rule is established between a traditional protocol and the IEC 61850 by a mapping rule editor; the protocol converter finishes protocol conversion between the traditional protocol and the IEC 61850 by using the mapping rule so as to realize the communication between different transmission and transformation state online monitoring devices and the ACSI server to realize communication between the different transmission and transformation state online monitoring devices and the IEC 61850 client. The method for integrating the power equipment state monitoring devices radically solves the problem that the conventional power grid state online monitoring devices are difficult for interoperation and information sharing, and can better meet the requirements of an intelligent power grid on panoramic state information monitoring.

Method for integrating power equipment state monitoring devices

The integration of small-scale renewable energy sources in the smart grid depends on several challenges that must be overcome. One of them is the presence of devices with very different characteristics present in the grid or how they can interact among them in terms of interoperability and data sharing. While this issue is usually solved by implementing a middleware layer among the available pieces of equipment in order to hide any hardware heterogeneity and offer the application layer a collection of homogenous resources to access lower levels, the variety and differences among them make the definition of what is needed in each particular case challenging. This paper offers a description of the most prominent middleware architectures for the smart grid and assesses the functionalities they have, considering the performance and features expected from them in the context of this application domain.

/pdf/middleware-architectures-for-the-smart-grid-a-survey-on-the-5dz4i6hmt3.pdf

Middleware Architectures for the Smart Grid: A Survey on the State-of-the-Art, Taxonomy and Main Open Issues

The invention relates to a power system automation software library assembly and an achieving method of the power system automation software library assembly, in particular to an IEC61850 software library assembly for a network processing unit chip and an achieving method of the IEC61850 software library assembly. The software library assembly is arranged on a network processing unit chip platform and comprises a communication assembly and an application assembly. The communication assembly and the application assembly are both in data interaction with a configuration management assembly, a maintaining assembly, a man-machine interaction assembly and an assembly management and real-time database through a soft bus assembly. The invention further provides the achieving method of the IEC61850 software library assembly for the network processing unit chip. According to the IEC61850 software library assembly and the achieving method, supporting to IEC61850 communication is achieved on the layer of the network processing unit chip, the integration difficulty is reduced, the size, the power dissipation and the price of an IED are integrally reduced, the reliability of the device is improved, and the development application of an IEC61850 standard in an electrical power system is further promoted.

IEC61850 software library assembly for network processing unit chip and achieving method of IEC61850 software library assembly

The invention discloses a networked power telecontrol communication method, which is used for solving the problems of the one-transmission multi-reception and information forwarding of power telecontrol information. The method adopts a technical scheme that: models of an IEC 61850 standard, such as common data models, data models, dataset models, selection control-prior-to-report-and-operation models and the like, are taken as bases, functional requirements of the power telecontrol communication are combined and then an IEC 61850-based power telecontrol communication model is established so that communications in a substation and between the substation and a control centre adopt IEC 61850, an MMS and Ethernet as a unique communication standard, a unique communication protocol and a unique communication platform so as to realize interoperations among different firm IEDs. The networked power telecontrol communication method radically solves the problems of the one-transmission multi-reception and information forwarding of the telecontrol information puzzling the field of power telecontrol for a plurality of years, and realizes the interoperations among the different firm IEDs and the unified configuration and management on equipment.

Networked power telecontrol communication method

This paper introduces the problems existing in the current communication protocols for power telecontrol system. A communication network structure for power telecontol system based on abstract communication service interface(ACSI) in IEC 61850 and manufacturing message specification (MMS) is proposed. To solve the compatibility of the existing power telecontrol system with new ones based on IEC 61850, a communication scheme based on ACSI/MMS gateway has been put forward. Combined with the requirement of power telecontrol communication, a real-time communication software for power telecontrol system is implemented applying a subset of MMS and OSI protocol stack. The validity and feasibility of the proposed models and methods have been proven through developing and testing a prototype system.

Research on distributed transmission of power telecontrol information based on ACSI/MMS

A multi-level fault diagnosis model for power transformer fault diagnosis based on Statistical theory is presented The fault information within Dissolved Gas Analysis (DGA) is used to build fault diagnosis model and the fault diagnosis is accomplished according to the concentration distribution of typical fault gases in higher dimensional space. The proposed approach is constructing the most accuracy model from few training samples supporting, and it is very suitable to solve the problems of less typical fault data for diagnosis. The results of using the proposed model to analyze some known samples of testing data of faulty transformers show that the model possesses strong solving ability to deal with the problem. Moreover, by comparing with the traditional dissolved gas analysis methods like the neural network, there is less fault data discriminated by the proposed model and the accuracy for power transformer fault diagnosis is improved using our proposed model.

A fault diagnosis model for power transformer based on statistical theory

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Papers

Networked power telecontrol communication method

Method for integrating power equipment state monitoring devices

Research on distributed transmission of power telecontrol information based on ACSI/MMS

A fault diagnosis model for power transformer based on statistical theory