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

Research on Digital Protection and Model of Sampled Values

Author GuoChenYan
Tutor YouDaHai
School Huazhong University of Science and Technology
Course Proceedings of the
Keywords IEC 61850 Sampled value transmission model CPLD Merging Unit VHDL Digital Protection
Type Master's thesis
Year 2007
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With the large number of cable connections between electronic current / voltage transformer step-by-step practical use, the process layer and the spacer layer will be replaced serial optical fiber communication , which is a new change of substation automation technology . To achieve interoperability between the IED equipment between production house The main purpose of the substation automation . The article first introduces the IEC61850 generation, development and the impact of the substation automation system , followed by the main content of the standard of each chapter , there is a general understanding of the standard , the last major study papers around the sampled value transmission model main content : First IEC 61850 main content of each chapter and the connotation of the term , the substation model , has been largely understanding of the standard ; sampled value transmission model specific build pathways for the distance protection . Modeling and specific communication service mapping of specific models on the basis of in-depth study sampled value transmission model provides a theoretical basis for the realization of the digital transmission of sampled values ??; Using CPLD electronic transformer interface . In -depth study an important part of the electronic transformer with protection interface - combining unit , CPLD technology to achieve multi-channel sampled value data receiving and efficacy . Using VHDL language to implement asynchronous serial communication module the CRC -tested modules, data storage module , and also the serial transmission module ; In order to achieve the protection can be applied to the new system , the existing protection of the transformation . The transformation of the key , and transformation device hardware and communication protocols need to change the Department . Finally, given the IEC 61850 - based digital protection data modeling , and to provide a basis for the realization of the digitization of the protection device .

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