The invention belongs to the field of electric power systems, and particularly relates to a method for evaluating relay protection states The method includes the steps: firstly, determining single state quantities of state evaluation to acquire acquisition; secondly, building a hierarchical state evaluation system; thirdly, computing constant weight coefficients and variable weight coefficients of the single state quantities according to association rules and variable weight theories; fourthly, building membership functions of the single state quantities for state rates by a fuzzy distribution method, building a fuzzy relation matrix, and gradually computing fuzzy comprehensive evaluation result vectors; finally, judging the running state of a relay protection device according to a maximum membership principle The influence of expert opinion subjectivity on the weight coefficients is avoided, the method contributes to solving the problem that a real running state of the relay protection device cannot be reflected by the constant weight coefficients, an accurate and simple relay protection state evaluation result is provided for operators and can serve as a state maintenance basis, the design thinking is clear, programming is easily realized, and transplantation between different programming environments is facilitated

Method for evaluating relay protection states

The invention discloses a state repair management system for a relay protection device, comprising a relay protection operation-maintenance recording module, a cycle management module, a state evaluation management module, a maintenance strategy management module, a professional report management module and a comprehensive analysis module. The state repair management system for the relay protection device of the invention could realize an operation-maintenance recording function, a cycle management function, a state evaluation management function, a maintenance strategy management function and a professional report management function of the relay protection device, and comprehensive analysis of the state of the relay protection device.

State repair management system for relay protection device

The invention provides a method and a system for identifying overhaul data of a relay protection device. The method comprises the steps of acquiring a protection event sent by an information protection system; if the protection event is an exit protection event, determining the exit protection event received within a preset time; if the quantity of the exit protection events exceeds the preset quantity, and the current fixed protection value is the preset protection resetting value, comparing the current fixed protection value with the fixed protection value obtained by previous polling; if the current fixed protection value is not the protection resetting value, setting the current fixed protection value as the preset first fixed protection value; determining the soft strap value, three-phase voltage value and protection version number by the same way; adding the obtained total action times, interrupting connection times, action time and overhaul times of the protection device to obtain the adding result; if the adding result is within the preset first range, determining that the protection event is overhaul data; if the adding result is within the preset second range, determining that the protection event is the action data. With the adoption of the method and the system, the information protection overhaul data can be effectively identified by analyzing the protection device body information.

Method and system for identifying overhaul data of relay protection device

The invention belongs to the field of power system automation and industrial automatic control, and discloses a visual simulation debugging method and system for protection logic and control logic, and the method comprises the steps: operating a visual development tool on a PC to edit a visual logic schematic diagram of an application program; performing visual simulation debugging client softwarerunning on the PC updates the data state on the visual logic schematic diagram in real time according to the simulation debugging result; generating a function configuration description file througha function or application visualization development tool; the protection measurement and control device or the industrial automatic control device and the device simulation server are used for analyzing and operating the function configuration description file; according to the invention, the problems that the path of the tested application program is not visual, the troubleshooting is difficult and the efficiency is low in the existing complete machine test mode are solved; meanwhile, the problem that simulation debugging of application program development is constrained by device hardware development, and the development progress of the whole product is affected is solved.

Visual simulation debugging method and system for protection logic and control logic

The invention discloses a relay protection device risk assessment system and method. The method is characterized by, to begin with, collecting temperature data of operation equipment through a four-phase temperature measurement probe; sending the measured data to a PC terminal; and carrying out classification and making an effective prediction on the states of the monitored operation equipment by utilizing a distance discriminant analysis algorithm. The system constructs a framework for identification of the operating state of the relay protection equipment and integrating temperature acquisition, on-line pretreatment and equipment operating state detection, can dynamically evaluate and estimate operation status and dangerousness of relay protection equipment to be measured, can provide reference data for prevention of fault of the relay protection equipment and can prevent economic losses in advance.

Relay protection device risk assessment system and method

The invention provides a relay protection state evaluation and aid decision-making maintenance method which comprises the following steps of establishing a relay protection state evaluation system; and establishing a judgment matrix for evaluating a relay protection state, and carrying out consistency check on the judgment matrix to obtain an aid decision-making maintenance report. On the basis of relay protection real-time/offline multi-state information, the health state of a relay protection device can be dynamically tracked, and hidden defects of the relay protection device can be immediately found, thus the relay protection state evaluation and aid decision-making maintenance method provided by the invention has great significance on ensuring the safe operation of a large power grid in China.

Relay protection state evaluation and aid decision-making maintenance method

The invention relates to a simulation modeling method for a non-contact electric energy transmission system. The simulation modeling method comprises the following steps: building an equivalent circuit model of the non-contact electric energy transmission system; applying a constrained relationship to the non-contact electric energy transmission system; building a measurement module. According to the method, the bottleneck problem of shortage of a simulation experiment means in relevant research of non-contact electric energy transmission is solved.

Simulation modeling method for non-contact electric energy transmission system

The invention relates to a relay protection state overhaul method for a power system and in particular relates to a relay protection state overhaul auxiliary decision guide rule adaptation method for the power system. The method comprises the following steps of A, customizing basic information of relevant guide rules of a state overhaul auxiliary decision system; B, recording and maintaining basic data of the state overhaul auxiliary decision system; C, performing state evaluation on relay protection of the power system and a secondary loop of the power system; D, performing closed loop management on an overhaul plan. The method disclosed by the invention can adapt to differences between different relay protection state overhaul guide rules and a standard execution process to meet different customizing requirements of different units on the relay protection state overhaul work, so that unified development and arrangement of software systems are realized, and the workload of software development and maintenance is reduced.

Relay protection state overhaul auxiliary decision guide rule adaptation method for power system

The invention provides a division method of a protection equipment operation state space on the basis of on-line operation information. The method comprises the following steps: (1) dividing the internal composition equipment of a protection system; (2) analyzing the on-line information of each piece of composition equipment of the protection system to obtain the state information of each piece of equipment; (3) layering the state space of the protection system; and (4) dividing the inner sides of four hierarchies of the state spaces. The division method divides the whole state space into an operation refusing layer, a maloperation layer, a correct operation layer and an isolation overhaul layer according to a protection operation result to greatly simplify the complexity of the state space. On the basis of the on-line real-time operation information of the protection equipment, the analysis and the classification of the state of each class of device in the protection system can be finished, and the division of states including faults, defects and the like of the device is finished by comprehensively considering off-line historical defect information and the like.

Division method of protection equipment operation state space on the basis of on-line operation information

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Papers

Relay protection state evaluation and aid decision-making maintenance method

Simulation modeling method for non-contact electric energy transmission system

Relay protection state overhaul auxiliary decision guide rule adaptation method for power system

Division method of protection equipment operation state space on the basis of on-line operation information