第1个回答 2009-04-19
In this paper, is the relay on the 220KV grid. Through the design of the master and the consolidation of power system relay protection of the relevant theoretical knowledge, be familiar with the design of relay protection of power system design steps and skills, according to technical specifications, select the configuration of relay protection and demonstration of the correctness of selection and training works in practice in their own capabilities, innovation and the ability to work independently.
The design is based on the Chongqing Water Conservancy and Electric Power Vocational Technology College students of the graduation requirements of the design. The main elements of the design of 220KV power system relay protection configuration and tuning, design elements include: Introduction Chapter; computing systems in the second chapter of the main parameters of the various components; power lines on the road in Chapter III TA, TV changed over the choice and the choice of neutral grounding; Chapter IV grid short-circuit current calculation; section of chapter V of electricity network selection phase distance relay with the setting; Chapter VI of zero-sequence power network relay protection options and setting; Chapter VII the choice of automatic reclosing.
Relay to adapt to a variety of changes in the power system's ability to run is limited, therefore, for the relay setting program will be different with different protective effects, how to determine the best setting of a program, it will be engaged in relay protection engineering research. In short, the relay setting both their own skills as well as relay configuration and selection of problems, but also the power system structure and functioning of the problem. In particular, for this article 220KV high-voltage line current differential protection phase put into operation at the scene prior to testing, and technical personnel has been a problem, because lines at both ends of the distance restrictions, on-site laboratory tests can not be as easy as.
Keywords: relay coordination program with the power system structure and operation of
第2个回答 2009-04-18
In this paper, is the relay on the 220KV grid. Through the design of the master and the consolidation of power system relay protection of the relevant theoretical knowledge, be familiar with the design of relay protection of power system design steps and skills, according to technical specifications, select the configuration of relay protection and demonstration of the correctness of selection and training works in practice in their own capabilities, innovation and the ability to work independently.
The design is based on the Chongqing Water Conservancy and Electric Power Vocational Technology College students of the graduation requirements of the design. The main elements of the design of 220KV power system relay protection configuration and tuning, design elements include: Introduction Chapter; computing systems in the second chapter of the main parameters of the various components; power lines on the road in Chapter III TA, TV changed over the choice and the choice of neutral grounding; Chapter IV grid short-circuit current calculation; section of chapter V of electricity network selection phase distance relay with the setting; Chapter VI of zero-sequence power network relay protection options and setting; Chapter VII the choice of automatic reclosing.
Relay to adapt to a variety of changes in the power system's ability to run is limited, therefore, for the relay setting program will be different with different protective effects, how to determine the best setting of a program, it will be engaged in relay protection engineering research. In short, the relay setting both their own skills as well as relay configuration and selection of problems, but also the power system structure and functioning of the problem. In particular, for this article 220KV high-voltage line current differential protection phase put into operation at the scene prior to testing, and technical personnel has been a problem, because lines at both ends of the distance restrictions, on-site laboratory tests can not be as easy as.