38 results about "Logic locking" patented technology

The invention brings forward a switching operation bill generation method of a railway transformation and distribution substation. The method comprises the following steps: selecting an operation task and an operation mode, a system, through carrying out topology analysis on a main wiring diagram, listing circuit breakers of all outlet wires, upper and lower isolation knife brakes, buses, bus couplers and the like, then entering graphic billing, when switching operation is carried out and an operation bill is issued, first of all, selecting a current operation mode, secondly, selecting devices and cabinet bodies which are related to by operation of this time, according to the currently selected devices, extracting rules related with the operation from a rule base to establish a new rule table, for the new rule table, generating operation statements according to a first-transverse-and-then-longitudinal sequence, and filling a bill sample with the generated operation statements. According to the invention, a logic relation table with powerful functions can be automatically generated, through the table, the association sequence among operation cabinet bodies and the logic locking relations among operation devices can be solved, and operation bills of all operation types of a whole station can be automatically generated in an accurate manner.

The invention relates to a controller for switching a grid connection photovoltaic power generation system and an off-grid photovoltaic power generation system, which comprises a detection control device, a main switcher and four wiring terminals; the detection control device comprises a logic locking module, and a grid fault detection module, a first photovoltaic control module and a second photovoltaic control module which are respectively connected with the logic locking module; and the logic locking unit is connected with the main switcher, and is used for controlling the main switcher to switch the grid connection photovoltaic power generation system and the off-grid photovoltaic power generation system according to the detection information of the grid fault detection module, the first photovoltaic control module and the second photovoltaic control module. According to the controller for switching the grid connection photovoltaic power generation system and the off-grid photovoltaic power generation system, the logic locking module controls the main switcher to quickly switch a grid connection photovoltaic power generation method or an off-grid photovoltaic power generation method, so that the load of a user or important loads can continue to work uninterruptedly without being affected by the faults of utility power or power-off, and the grid connection photovoltaic power generation system and the off-grid photovoltaic power generation system are effectively integrated.

The invention discloses a differential protection method for a multi-winding arbitrary phase shift angle phase shift transformer. The method comprises steps that currents of windings at a primary side and a secondary side of a transformer are acquired in real time; reduction from a secondary side multi-winding arbitrary angle current of the transformer to a primary side current is carried out through a phase shift synthesis algorithm; current differential amount and braking amount are calculated according to the current after reduction and the primary side current; in combination with the current differential amount and the braking amount, whether action conditions are satisfied is determined, if yes, a differential protection logic locking mark is invalid, differential protection is valid, and the protected transformer is cut off through tripping. The method is advantaged in that the method is suitable for differential protection on the multi-winding arbitrary phase shift angle phase shift transformer, the method is compatible with differential protection of common transformers, strong universality is realized, and the phase shift synthesis algorithm provides a new solution thinking for reduction from the secondary side multi-winding arbitrary angle current of the transformer to the primary side current.

The invention discloses a parallel-connected microcomputer electrical error-proof locking device, which consists of a touch screen display, an indicator light, a power supply board, a CPU board, a main DSP board, a spare DSP board, an input board and an output board. The logic of the locking circuit is clear and clear through the new locking method, and the locking logic can be checked at any time, and the specific fault point can be quickly indicated, which is convenient for modification, maintenance and maintenance. Reliability under various failure conditions. The parallel microcomputer electrical error prevention device of the present invention has the advantages of being convenient for rapid defect elimination, convenient for management, and simplified wiring while ensuring the same reliability as the electric lock + logic lock mode.