Research On Interim Communication Scheme In Power System Engineering

The power communication system has a very complicated structure,which is built up by the power dispatching organizations,power plants and substations distributed throughout the country.Under the background of vigorously advocating smart grid,the construction of power system has also started a rapid evolution.As a result,construction projects such as line opening,line transformation and outgoing line interval adjustment appear more and more frequently,and affected by natural disasters will force the existing OPGW and ADSS optical cables to interrupt for a long time,which will further lead to open-loop operation of power system communication network.As a powerful guarantee for the safe,reliable and stable operation of the power communication system,the interim communication system is playing an increasingly important role.It is imperative to make a reasonable,effective,economic and perfect interim communication scheme.This thesis is based on Research On Interim Communication Of GEDI.First,the main application scenarios of interim communication are sorted out,and then the different interim communication schemes are analyzed.Aiming at the key problems of poor microwave signal quality and limited transmission distance in wireless relay scheme,through the analysis of the traditional interim communication scheme of microwave wireless relay,and the horizontal comparison of the main wireless communication technologies such as frequency band,coverage,transmission bandwidth,security and quality of service(QOS)assurance,it is suggested that Wi MAX technology with obvious advantages be used as a substitute scheme of wireless relay,and the optimized Chow algorithm is introduced to adapt to it,sacrifice small probability to reduce delay.Secondly,the key problems of optical signal multiplexing and fiber dispersion in detour routing are studied,through technical comparison,OTN technology is proposed to achieve multiplexing of multiple optical waves in a single optical fiber,and to build a routing structure of multiple optical amplifiers in different types of optical fiber to avoid the influence of dispersion.In this thesis,Wi MAX-based wireless relay schemes and OTN-based schemes are tested and simulated respectively,The results show that both schemes can effectively improve the interim communication quality.Finally,the application orientation and selection principles of various schemes are given through analysis and comparison,whichprovide a fast,effective,reliable,safe and economical response mechanism and solution for power communication interruption,so as to achieve the purpose of optimal distribution of power resources and stable operation of power system.