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Fault detection method and substation terminal station used in the method

A technology of fault detection and substation, which is applied in the direction of remote measurement/remote control selection device, electrical components, selection device, etc., and can solve problems such as difficulty in adoption

Active Publication Date: 2019-01-01
株式会社爱霓威亚
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Problems solved by technology

Although there is a method to directly send and receive information between the substations individually connected to the corresponding output part and input part, this is the so-called command transmission method, which is executed by the transmission synchronization method. It is difficult to adopt in the control monitoring signal transmission system of data transmission

Method used

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  • Fault detection method and substation terminal station used in the method
  • Fault detection method and substation terminal station used in the method
  • Fault detection method and substation terminal station used in the method

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Embodiment Construction

[0093] see below Figure 1 to Figure 11 An embodiment of a control and monitor signal transmission system employing the fault detection method of the present invention will be described.

[0094] Such as figure 2 As shown, the control and monitoring signal transmission system consists of a control unit 1 and a single master station 2 connected to a common data signal line DP, DN (hereinafter also referred to as a transmission line), and several master stations connected to the common data signal line DP, DN. The input and output sub-station 4, the output sub-station 6 and the input sub-station 7 are composed. figure 2 In order to facilitate the illustration, only one sub-station is shown, but there is no limit to the type or quantity of sub-stations connected to the common data signal lines DP and DN.

[0095] The output substation 4, the output substation 6, and the input substation 7 are the signal output processing of the output unit 8 that executes in response to the o...

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Abstract

[Problem] To provide a fault detection method that enables the identification of a fault in an output unit and an input unit on the master station side even when only either the output unit or the input unit is connected to one slave station in a control and monitoring signal transmission system in which data is transmitted by a transmission synchronization scheme, and a slave station terminal used for said method. [Solution] With a predetermined another station as a reference station, each of a plurality of slave stations connected to a master station by a common data signal line captures, as reference data, control data to the reference station or monitoring data sent out from the reference station from a transmission signal, then obtains, as an interval time, the time from the change in the designated change direction of the reference data to the change in the designated change direction of output data to an output unit that the slave station corresponds to or input data from an input unit that the slave station corresponds to, and compares the interval time with a predetermined threshold value.

Description

technical field [0001] The present invention relates to a fault detection method and a substation terminal station used in the method, which is connected to a master station connected to a control unit and a plurality of output units and input units, or a plurality of substations corresponding to a plurality of controlled devices In the control monitoring signal transmission system for data transmission, the signal lines between are connected with a common data signal line and synchronized by the transmission frequency to save wiring, and the output part and the input part are detected. Department failure. Furthermore, the so-called output unit is to operate in response to the instruction of the control unit, and is equivalent to an actuator (actuator), a stepping motor (stepping motor), a solenoid (solenoid), a solenoid valve, a relay (relay), a thyristor ( thyristor) and so on. On the other hand, the so-called input unit is for sending information related to the output uni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q9/00
CPCH04Q9/00H04Q2209/753
Inventor 锦户宪治楠元省太郎
Owner 株式会社爱霓威亚
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