Using the criterion of technical efficiency for setup of line distance relay protection
For several years at the Tomsk Polytechnic University the probabilistic methods and algorithms for technical efficiency of the electric network relay protection has been developed. The most representative and reliable results of making losses: refusals of operation, false and excessive actions take place at definition of their expressions as products of probabilities of corresponding conditions (faults on a protected line and in an external network, normal working operational conditions, asynchronous and open-phase modes, etc.) on conditional probabilities of losses in these conditions. The conditional probabilities are formed on the method SBID (selection the borders of intervals of the in and out data) allowing to define the full probability distribution law (PDL) of all determined or random functional dependences of any dimension on one-dimensional PDL of arguments of these dependences. In the case of distance protection line reasonable to approximate PDL response parameter (the measured resistance by distance) to uniform law PDL that has allowed simplifying to calculate conditional probability of the losses and as a whole technical effect. Determining the criteria for technical efficiency is an objective indicator quality of functioning relay protection. Therefore, by its extremum or the nearest approximation to its extremum, determine the meaning and content of each stage distance protection, to determine the optical practical setting of distance protection.
Technical efficiency technical effect distance relay protection electric network probability distribution density (PDD) probability distribution function (PDL) probability distribution law (PDL).
Tran Hoang Quang Minh A.V.Shmoilov
Tomsk Polytechnic University Tomsk,Russian Federation
国际会议
The 6th International Forum on Strategic Technology(IFOST 2011)(第六届国际战略技术论坛)
哈尔滨
英文
512-516
2011-08-22（万方平台首次上网日期，不代表论文的发表时间）