Electron linkage fastener and its working process
A latching device and electronic technology, applied in circuits, electrical switches, electrical components, etc., can solve the problems of users' economic burden, affect the reliability of action, complicated transmission process, etc. The effect of system settings simplification
Inactive Publication Date: 2006-09-20
UNIVERSAL ELECTRIC APPLIANCES INST ZIBO CITY
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Problems solved by technology
The problems exposed in the use of the program lock are: (1) The program lock has different degrees of jamming during operation
(2) The program lock does not have the function of preventing reverse power transmission and preventing accidental entry into the electrified interval
The advantage of the electromagnetic lock is that it is easy to operate and has no auxiliary action, but there are also the following outstanding problems in the installation and use: (1) Generally speaking, when the electromagnetic lock is used alone, it only has the unlocking function but not the reverse locking function
(2) It is necessary to lay cables and increase the amount of additional construction
(3) The auxiliary contacts of the operating mechanism need to be connected in series. The auxiliary contacts are prone to poor contact and affect the reliability of the action. (4) When operating complex circuits, the number of keys is large and the transfer process is complicated
[0008] After years of operation, it is found that it has the following problems: (1) The structure is relatively complicated, the operator's technical level is high, and the operation time is long
(2) The price of the device is high, which is unbearable for a large number of 110kV and below substations and distribution stations
(3) The types of locks are not complete enough, and the locking function needs to be further improved, especially for coded padlocks. At present, mandatory locking cannot be implemented, and there is a serious phenomenon of "going empty".
(4) The connection and cooperation with the mechanical lock of the switch cabinet is not tight enough
It has complete locking functions, high intelligence, convenient use, and accurate and reliable performance. However, when it is actually used in outdoor locking solutions, it will cause waste in function, increase the cost, and cause unnecessary economic burden to users.
Method used
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[0035] figure 1Among them, in the electrical circuit part of the electronic key, the output terminal of the lock and switch state information acquisition unit composed of the lock code acquisition circuit, the mechanical variable code acquisition circuit and the photoelectric feedback acquisition circuit is connected with the complex programmable logic device CPLD (Complex Programmable Logic Device) or Field Programmable Gate Array FPGA (Field Programmable Gate Array) composed of the I / O port connection of the programmable logic unit, the I / O port of the programmable logic unit and the operation information display unit (light-emitting diode) and / or LED digital tube) is connected to the I / O port of the control unit, the I / O port of the control unit is connected to the control terminal of the electromagnet drive unit, and the power supply unit (not shown in the figure) is connected to the above-mentioned units , to provide power to the above units.
[0036] figure 2 Among th...
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A locking device for electronic linkage works in the following steps: storing all the switching codes and operation rules of the system in an electronic key, the lockset and its switching state being output by the lockset through the information output unit, reading in the information by the electronic key, judging whether the prerequisite of this operation is satisfied or not, and if it is, releasing the closing and allowing the operation of on-and-off of the switch, the locket being closed and the operation data being stored in internal circuit by the electronic key, and after the operation being finished, the electronic key being ready for the next operation. The present invention applies the programmable logicalizer combining with lockset and its no-off state to realize the logic judgement and control.
Description
technical field [0001] The invention belongs to the field of manipulation and control of an interlock mechanism between two or more switches, and in particular relates to an electronic linkage locking device for preventing misoperation of a power system. Background technique [0002] Power misoperation accidents are the enemy of the safe operation of power systems. Every misoperation may cause large-scale power outages, and serious consequences may cause casualties and equipment damage. Therefore, preventing misoperation has become an important topic that has been studied hard for a long time by workers engaged in power safety work and anti-misoperation. Installing anti-locking devices to prevent vicious misoperation accidents has become a technical policy implemented in the power system and switchgear manufacturing departments. [0003] At present, the anti-misoperation locking methods mainly include the following types: mechanical locking, program locking, electrical inte...
Claims
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IPC IPC(8): H01H9/26G06F19/00G06F13/00
Inventor韩志刚刘全亮黄先明
OwnerUNIVERSAL ELECTRIC APPLIANCES INST ZIBO CITY