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The Research on the Problems of the Distribution Automation

Author: MaJun
Tutor: GaoYong
School: Xi'an University of Technology
Course: Power Electronics and Power Drives
Keywords: Distribution automation Feeder Automation Fault detection Troubleshooting
CLC: TM76
Type: PhD thesis
Year: 2004
Downloads: 1189
Quote: 22
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Abstract


With the continuous expansion of the distribution network, the reconstruction and construction of distribution network automation has become a necessity. This thesis is based on full access to sum up the status quo at home and abroad in the field of, starting from the distribution network of the status quo in Guyuan region, during the distribution automation system selection, planning, construction, the needs of new technology in this field, the application were discussed, and the conclusion. The main content of the paper and the results achieved are: (1) from the Ningxia Guyuan distribution network construction experience, the demand for construction of distribution automation is still stuck in the simple level of automation, scheduling automation control and distribution management automation. Existing distribution network automation control objectives and its requirements are very basic, only the most basic automation functions, can not really use a large number of advanced applications, need to rely heavily on the experience of the operating personnel, the existing technical level in a transition period, at this particular stage will be a lot of new technologies are emerging, in the experience of the test of practice, there will be a real solution to the on-site demand good technology, good ideas are widely used. On the basis of the existing technical level and demand level, the authors believe that the distributed control mode using feature further decentralization will further enhance the emergency control of the distribution network and the special ability to control, and is beneficial for the future construction of distribution automation. (2) Analysis of the distribution network control composition and the requirements of the operating habits that control object hierarchical distribution control mode is adopted to the single feeder of the optimal mode of the feeder automation. In this mode, the feeder fault identification, fault isolation entirely by the distribution terminal to achieve with electronic station, the distribution master only as a back-up in the to retain centralized feeder automation control function. The realization of this control mode Xi'an University of Technology PhD thesis largely need to change the function of the existing distribution terminal. (3) the distribution automation system and distribution terminal is the most basic information collection, calculation, transmission, control and protection aspects, the bottom of the entire distribution network distributed control system operable object, all control of the distribution network are dependent with electrical terminals. This paper extends the scope of the concept of power distribution terminal, proposed the new concept of distribution the Netcom using the control node (All-in-one Control Node) that many distribution terminal located complex distribution network topology diagram distribution network eventually achieve control part of any control, measurement, calculation functions can be universal control node (ACN). On this basis, design a generic control node hardware and software systems, the design of real-time multitasking operating system based on double ePu (eentra a Proeessing unit) structure the embedded nsP system solutions, software, hardware thinking, DT-OS software system design, and how to ensure the reliability of the control node. (4) in the distribution Netcom feeder automation control node based on efforts to resolve the failure processing, including high-current fault and the small current grounding 2D node control the ideas and principles of the fast feeder protection, further discussion to ensure control the reliability of backup protection. For single-phase ground fault, this paper investigates the the longitudinal identification principle in the distribution automation platform. (5) The distribution automation for operating personnel to provide basic control platform, distribution automation should be able to continue to expand, operating personnel can control the performance of the nodes on the basis of the combination of common control platform and general himself running expertise integration in advanced applications for distribution automation system function, which is a special high-level applications, for example to Guyuan with melting ice, and application-specific analysis and implementation. Keywords: distribution network automation, feeder automation, fault detection, fault handling

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Power system automation
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