38 results about "Logic locking" patented technology

The invention relates to an integrated mis-logical locking prevention system of a digital substation, which is characterized in that: the system comprises two stages of independent mis-logical locking prevention of a station monitor and control layer and mis-logical locking prevention of a bay layer, wherein the mis-logical locking prevention of the bay layer is established based on communicationbetween a bay layer and a process layer of a GOOSE mechanism; intelligent equipment of the bay layer acquires required state information participating in logic locking calculation by utilizing the GOOSE mechanism through a network of the process layer; and the system consists of an operator station of the station monitor and control layer, the intelligent equipment of the bay layer, and an intelligent interface of the process layer. The system makes up for the deficiency of the conventional anti-misoperation locking system, simplifies construction, improves reliability, and has clear hierarchies; and the GOOSE mechanism ensures quick and reliable information transmission.

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 utility model provides a transition method of an intellectualized monitoring system modification process of a conventional transformer substation and belongs to the field of power transformation and distribution. A bus 61850 protocol measuring and controlling device is first modified, replaces an original bus measuring and controlling device and is connected to a 61850 protocol intellectual station level network to achieve a separating layer logic locking function measured and controlled by a bus and be responsible for remote operation of a bus earthing knife-switch. The original bus measuring and controlling device is not dismantled, a remote operation function of the device is forbidden, and improvement of the separating layer logic locking function of an original 103 protocol network side switch is guaranteed. The separating layer logic locking function related with the bus measuring and controlling device in the 61850 protocol intellectual station level network is forbidden, and the integrity of the bus disconnecting switch locking function can be ensured by means of the logic locking function of a stable level. Original 103 protocol measuring and controlling devices are gradually modified in sequence according to a power outage plan, the bus separating layer logic locking function of the 61850 protocol intellectual station level network is recovered after all of modification is finished, the integrity of full-station separating layer locking is achieved, and the original 103 protocol bus measuring and controlling devices are dismantled. The transition method can be widely applied to the intellectualized modification field of the conventional transformer substation.

An exemplary system, method and computer-accessible medium for modifying a design of an integrated circuit(s) (ICs), which can include, for example, modifying a logic gate(s) in the design for a protected input pattern(s), and providing a restoration unit(s) into the design, where the restoration unit(s) can be configured to (i) produce an error-free output(s) when a correct secret key can be applied to the restoration unit(s), and (ii) produce an erroneous output(s) when an incorrect key can be applied to the restoration unit(s); and ensure that the modified design along with the restoration unit produces at least one erroneous output with respect to the original design for only a pre-determined constant number of incorrect keys based on at least one input pattern.

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 present invention extends to methods, systems, and computer program products for resolving lock conflicts. For a state persistence system, embodiments of the invention can employ a logical lock clock for each persisted state storage location. Lock times can be incorporated into bookkeeping performed by a command processor to distinguish cases where the instance is locked by the application host at a previous logical time from cases where the instance is concurrently locked by the application host through a different name. A logical command clock is also maintained for commands issued by the application host to a state persistence system, with introspection to determine which issued commands may potentially take a lock. The command processor can resolve conflicts by pausing command execution until the effects of potentially conflicting locking commands become visible and examining the lock time to distinguish among copies of a persisted state storage location.

The invention discloses a substation real-time monitoring device with ground wire faulty operation prevention locking, relates to the substation real-time monitoring device, and aims to solve the problems that real-time monitoring of a ground wire of a working site cannot be performed and monitoring cannot be performed for preventing faulty operation of the substation operation personnel in the conventional substation ground wire monitoring device. A data signal output and input end of a ground signal acquisition component is connected with a data signal input and output end of a signal space and control component; the data signal output and input end of the signal space and control component is connected with the data signal input and output end of a substation end control component; a control signal output end of the signal space and control component is connected with a control signal input end of external primary equipment; and the device can realize the functions that the substation operation personnel can monitor the ground wire of the working site in real time and avoid the faulty operation for logic locking. The device can be widely applied to monitoring the connection state of the ground wire of a high-voltage line of various voltage levels.

The invention discloses a parallel microcomputer electrical anti-mislocking device, including 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. According to the parallel microcomputer electrical anti-mislocking device, logic of a locking loop is clear and explicit through anew locking method, locking logic can be checked at any time, and a specific fault point can be pointed out quickly which is prone for modification, repair and maintenance. At the same time, reliability under various faultconditions is realized by two kinds of locking modes which are simultaneous changing locking and different positionssumming locking. The parallel microcomputer electrical anti-mislocking device of theinvention ensures same reliability as an electrical locking mode plus a logic locking modeand at the same time has advantages of convenience in quick defect removal, easy in management, and simplicity in wiring.

The invention relates to a flexible direct current convertor station door lock system, especially relates to a flexible direct current convertor station valve hall anti-misoperation door interlock system. Based on a real state of a convertor station master control system, only when the convertor station master control system confirms that the present flexible direct current system is in an off-stream state and devices in the valve hall are in an uncharged state, the door interlock system can be further started. In the meantime, taking an access state of a valve hall key as a judgment, whether the valve hall door is opened really reflects the state of the valve hall door, and a protection system is controlled by the convertor station to control whether operation is charged. The flexible direct current convertor station valve hall anti-misoperation door interlock system has advantages that the 100% real state of the valve hall door rather than a simulation state in a microcomputer background is provided, a reversed locking function is set in each step of operation, the operation must be performed according to a correct operation sequence of an electrical device, and an anti-misoperation purpose of the valve hall is realized through an electrical logic locking loop, so that the misjudgment and misoperation of operators can be really avoided, and the safety and reliability of the operation of a flexible direct current power transmission system is improved.

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 an intelligent community safety management device, comprising a managing device host, a parking position locking device, a video monitor, a geomagnetic sensor and a smoke detector. The surface of the management device host is provided with a displayer; the management device host is internally provided with a logic locking module, a control module and a data storage module; the logic locking module comprises a parking position numbering module, a logic operation module and a logic expression module; the monitor housing is internally provided with a multi-function circuit board and a power supply; the multi-function circuit board is provided with a license plate identification module, a license plate signal processing module, a multifunctional chip, a video storage module and a video transmission module. The intelligent community safety management device can be positioned in the community parking lot to perform monitoring of smoke and the license plate, and is high in smoke monitoring sensitivity and in license plate identification accuracy, and can improve the safety and convenience of the community.

The invention discloses an intelligent program-control error-locking prevention system based on integrated design. An anti-misoperation host and a monitoring background host are integrated, and a measurement-control network and an anti-misoperation network are integrated. A measurement-control unit is provided with a five-prevention locking node which can be controlled in a monitoring system background, and the five-prevention locking node is a normally opened node in series with an operation circuit, so operation can be performed only when the five-prevention locking node is closed, regardless of remote control or on-site operation. After the five-prevention logic of inspection equipment completes the simulated preview of operation tickets on a monitoring-system background host, according to a formed sequence of the operation tickets, a background monitoring system automatically closes the five-prevention locking node corresponding to current equipment to be operated, and the closureof the mode shows that the equipment passes double verification about five-prevention logic locking and operation-ticket sequential locking. The error-locking prevention system can ensure that only the correct equipment can be operated within the whole range of a substation, regardless of remote control through the host in a station control layer, operation in an interval layer or on-site operation in an equipment layer.

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.

Provided is a transition method for a monitoring system modification process during intelligent modification of a conventional substation. The method comprises: modifying a 61850 protocol measurement and control device of a bus first, replacing an original bus measurement and control device, and accessing a 61850 protocol intelligent station control level network so as to achieve a spacer-layer logic locking function measured and controlled by the bus and responsible for a remote control operation of an earthing knife switch of the bus; not dismantling the original bus measurement and control device, forbidding a remote control operation function thereof, and guaranteeing the improvement of the spacer-layer logic locking function of an original 103 protocol network side switch; suspending the spacer-layer interlocking function related to the bus measurement and control device in the 61850 protocol intelligent station control level network, and guaranteeing the integrity of a bus disconnecting switch locking function by means of a logic locking function of the station control level; and modifying the original 103 protocol measurement and control devices successively according to strings based on a power outage plan, recovering the bus spacer-layer interlocking function of the 61850 protocol intelligent station control level network after all the modification is finished, achieving the integrity of full-station spacer-layer interlocking, and dismantling the original 103 protocol bus measurement and control devices. The method can be widely used in the field of intelligent modification of conventional substations.

The invention discloses a transformer substation fire-fighting remote centralized monitoring system. The system comprises a centralized fire alarm controller, wherein the centralized fire alarm controller is connected with a multi-line control panel and a bus control panel through an internal bus, the multi-line control panel is connected with an IO expansion device, the IO expansion device is connected with a monitoring end transmission control unit, the bus control panel is connected with the monitoring end transmission control unit, the monitoring end transmission control unit is connected with the station end fire-fighting information transmission control unit through the dispatching data network, the station end fire-fighting information transmission control unit is connected with the station end fire alarm controller, and the station end fire alarm controller is connected with the fire-fighting equipment. The invention further discloses a remote centralized monitoring method for fire protection of the transformer substation. Through the logic locking function, multiple locking conditions are judged, and potential safety hazards caused by misjudgment and missed judgment are avoided.