A method to ensure safe and reliable execution of relay protection remote operation
A technology for safe operation and relay protection, applied in emergency protection circuit devices, electrical components, circuit devices, etc., to reduce manpower and material costs, reduce driving risks, and improve operating efficiency
Active Publication Date: 2019-07-16
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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[0007] The present invention aims at the hidden dangers existing in the remote control of relay protection devices, and proposes a method to ensure the safe and reliable execution of relay protection remote operations. In order to further improve the reliability of relay protection remote operations, the present invention proposes a method based on three Confirmed and reliable technical solutions
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[0016] The method to ensure the safe and reliable execution of the remote operation of relay protection. After the plant terminal is connected to the protection equipment and the physical connection test is established at the dispatching terminal, and the upper and lower dual-machine monitoring is performed normally, if the remote modification operation is performed, the operator will modify it. When the command is sent to the remote factory station, three confirmation steps must be carried out. If any one of the three confirmation steps cannot be completed, the unconfirmed result will be reported to the system and the operation task will end. Such as figure 1 The flow chart shown, the three-step confirmation steps are as follows: S1. Select the operation item on the D5000 platform, that is, the switching of the fixed value area or the item of soft platen investment and withdrawal, and perform the first step of confirmation. The first confirmation of the switching of the fixed ...
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The invention relates to a method for ensuring safe and reliable execution of a relay protection remote operation. A technical scheme based on determination on three aspects is disclosed; the determination on three aspects refers to conditions that at least three indications are changed correspondingly, and all the determined indications are all changed correspondingly at the same time; the safe and reliable execution of the remote operation function is protected, and then the purpose of improving the practical popularization of the relay protection remote operation is further fulfilled; and after the relay protection remote operation function is executed, the emergency handling capability of a power grid can be effectively improved, switching operation efficiency of the power grid is improved, manpower and material resource cost of a power supply enterprise is reduced, shutdown time of electrical equipment caused by accidents and other factors is shortened, traffic material loss is reduced, traveling risk of an operational and maintenance staff and personal risk of an onsite operator are lowered, and guarantee is provided for reliable power supply and good-quality service.
Description
technical field [0001] The invention relates to an electrical equipment control technology, in particular to a method for ensuring safe and reliable execution of relay protection remote operations. Background technique [0002] At present, the remote control technology of primary equipment has been widely used and has achieved remarkable benefits. However, it is often necessary to carry out coordinated operation of primary and secondary equipment in the substation because the relay protection device cannot realize remote control. This "short board effect" is obvious. Restricts the efficiency of grid operation. For a long time, because the remote control of relay protection such as modifying the fixed value, switching the fixed value area, switching on and off the soft pressure plate, and reset signal is more complicated than the remote control of the primary equipment, it has not been effectively applied in the power grid production. According to relevant data, in the power...
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IPC IPC(8): H02J13/00H02H7/26
CPCH02H7/262H02H7/263H02J13/0006Y02E60/00Y02P80/30Y04S10/16Y04S10/20
Inventor 钱海邱金辉贾松江杨飞朱兴勇田景辅于游姜健琳蒋萍
Owner STATE GRID LIAONING ELECTRIC POWER RES INST