17results about How to "Improve power supply security" patented technology

The agricultural equipment lithium battery pack with the temperature control structure comprises a box body, lithium batteries arranged at equal intervals are arranged in the box body, the lithium batteries are sleeved with phase change material layers fixedly connected with the lithium batteries, and the phase change material layers are sleeved with two sets of heat exchange pipes arranged at equal intervals; the heat exchange pipe is in a C shape, the two ends of the heat exchange pipe communicate with a water inlet pipe and a water outlet pipe correspondingly, and the front face of the box body is fixedly connected with a water inlet box and a water outlet box which are arranged in a staggered mode. According to the invention, the heat dissipation intensity of different parts of the lithium battery is flexibly controlled according to the heating degrees of different parts of the lithium battery, so that excessive heat dissipation of parts, which are not seriously heated, of the lithium battery is effectively avoided, the temperatures of all parts of the lithium battery are kept within the optimal range, and the working state of the lithium battery is improved.

The invention is suitable for the technical field of power distribution, and relates to a transformer area island protection method under planned power outage, a medium and a terminal, and the method comprises the steps: S10, additionally installing a passive island protection device at a photovoltaic user grid-connected point, carrying out the communication with a communication gateway through a carrier wave, and achieving the conventional protection through the overvoltage / undervoltage and overvoltage / underfrequency action principles; s20, an anti-islanding protection device is installed at a low-voltage bus of the distribution transformer on the transformer area side, and the anti-islanding protection device is used for reading the turn-off state of a low-voltage main switch, has an operation locking function and communicates with the communication gateway through RS485; s30, a communication gateway is installed on the transformer area side, and communication with the power distribution information system master station is established for uploading information of the protection devices on the local side and the transformer area side; and the main station is also used for sending commands issued by the main station to realize remote control of the main station. The method is simple in process and convenient to operate, detection blind areas can be effectively eliminated, and the recognition accuracy is improved.

The present application relates to a wind-driven multi-energy complementary Carnot battery system, which includes a heat pump module, a wind energy utilization module, an organic Rankine cycle power generation module, a solar energy utilization module, and a water storage heat exchange module. The output end of the wind energy utilization module is connected to the input end of the heat pump module, the input end and the output end of the solar energy utilization module are both connected to the heat pump module, the output end of the heat pump module is connected to the water storage heat exchange module, the water storage heat exchange module is connected to the organic Rankine cycle power generation module, the heat pump module, the wind energy utilization module, and the water storage heat exchange module are used to operate the air source energy storage mode, the heat pump module, the wind energy utilization module, the solar energy utilization module, and the water storage heat exchange module are used to operate the solar energy storage mode when the solar radiation intensity is greater than a preset value, and the organic Rankine cycle power generation module operates the power generation mode. The present application has the effect of improving the energy utilization rate of the Carnot battery system and enhancing the reliability and adaptability of the Carnot battery energy system.

The invention discloses a power line detection protection device, electric connection equipment and electric equipment, the detection protection device comprises a switch module, an electric leakage detection module, a self-checking path module, a fault response module, a trigger module and an indication module, the self-checking path module comprises a first self-checking unit and a second self-checking unit, the first current-carrying wire, the first self-checking unit, the first shielding conductor structure, the second shielding conductor structure, the second self-checking unit and the second current-carrying wire which are electrically coupled form an open-circuit self-checking path; the fault response module obtains an electric leakage signal or an open circuit signal generated when the open circuit self-checking path is open, and outputs a tripping trigger signal to enable the switch module to disconnect power connection; the indicating module is electrically coupled between the second self-checking unit and the second current-carrying wire; the feasibility and flexibility of electric leakage detection and shielding structure open circuit detection of the power line can be enriched, the power supply safety of the power line is improved, and the power consumption of the detection protection device is reduced.

The embodiment of the utility model provides a secondary power supply circuit for a double-circuit incoming line of an explosion-proof type high-voltage combined power distribution device. The secondary power supply circuit comprises a first self-supply power supply loop, a second self-supply power supply loop, an external supply power supply loop, a double-power-supply switching device U1 and a double-power-supply switching device U2, the first self-power supply loop and the second self-power supply loop are the same and comprise a high-voltage control transformer T1, a secondary side main switch S1, circuit breakers ZK0, ZK1, ZK2 and ZK3, an overvoltage relay GY and an undervoltage relay QY; according to the utility model, the two self-power supply loops are configured, and any one of the self-power supply loops can automatically ensure 220v voltage power supply of the secondary side when the high voltage of the primary side is switched; when the two self-powered power supplies are powered off, the external power supply can be timely and automatically switched to supply power to the secondary side electric equipment with 220v voltage.

The invention discloses an intelligent electric equipment safety protection circuit, and relates to the technical field of electric equipment protection, and the circuit comprises a power module which is used for supplying power; the switch control module is used for electric energy control; the auxiliary power supply module is used for supplying power; the electric equipment module is used for receiving electric energy, connecting with electric equipment and sampling current; the central control module is used for signal receiving and module control; the sampling control module is used for voltage sampling; the voltage comparison module is used for setting a comparison threshold value and carrying out voltage comparison; the voltage state detection module is used for detecting whether the voltage fluctuation range of the power supply module exceeds a set difference threshold value or not; the fault judgment module is used for controlling the working states of the protection control module and the auxiliary power supply module according to the voltage fluctuation state; and the protection control module is used for setting timing time and controlling the conduction work of the switch control module. The intelligent electric equipment safety protection circuit can accurately detect the voltage fluctuation state and timely carry out power-off protection.

The embodiment of the invention discloses an equipment on-shelf recommendation method and device, equipment, a storage medium and a program product. The equipment racking recommendation method comprises the steps that basic data and equipment information of equipment to be racked are acquired, and an equipment racking target and constraint conditions are determined, and the constraint conditions at least comprise the condition that under the condition that the equipment to be racked is connected to a candidate rack, the equipment to be racked is connected to the candidate rack; the estimated load power of each stage of power supply equipment in the power supply path to which the candidate rack belongs is smaller than or equal to a corresponding preset power threshold value; and based on the equipment shelving target and the constraint condition, according to the basic data and the equipment information of the to-be-shelved equipment, generating an equipment shelving scheme by using an optimization algorithm. By implementing the technical scheme of the embodiment of the invention, the safety of equipment racking can be improved.

The invention discloses a detection protection device of a power line, electric connection equipment and electric equipment. The power line comprises a first current-carrying wire and a second current-carrying wire. The detection protection device comprises a switch module, an electric leakage detection module, a fault response module, an overvoltage detection module and a trigger module. The electric leakage detection module comprises a first shielding conductor structure and a second shielding conductor structure. The fault response module obtains an electric leakage signal or an open circuit signal generated when the open circuit self-checking path is open, and outputs a tripping trigger signal to enable the switch module to disconnect power connection; the overvoltage detection module is used for generating an overvoltage signal and outputting the overvoltage signal to the fault response module when detecting that the voltage between the first current-carrying wire and the second current-carrying wire is too large, so that the fault response module outputs a tripping trigger signal, and feasibility and flexibility of electric leakage detection of a power line and open circuit detection of a shielding structure can be enriched. And the overvoltage input by the power supply is detected to trigger tripping, so that the power supply safety of the power line is improved.

The utility model discloses a voltage regulation system of hydroelectric generation relates to hydroelectric generation technical field, including hydroelectric generation control module, for hydroelectric generation and three -phase controllable rectification, output module is used for with the electrical equipment connection, output sampling module is used for voltage sampling and when the signal of sampling is greater than the set charging threshold value, control battery control module carries out energy storage work, battery control module is used for energy storage and power supply, voltage regulation module, voltage sampling and when the signal of sampling is greater than first overvoltage threshold value, control hydroelectric generation control module step -down, overvoltage judging module is used for when the signal of voltage regulation module sampling is greater than second overvoltage threshold value, step -down regulation module carries out step -down processing to hydroelectric generation control module. The utility model discloses voltage regulation system of hydroelectric generation can gradually step -down processing to hydroelectric generation control module through voltage regulation module, when the electric energy voltage is higher, accelerates the step -down rate, improves power supply stability and security.

This invention provides a frequency-to-analog safety barrier, comprising a voltage conversion circuit, a transformer coil drive circuit, a transformer, a first AC voltage rectification and filtering circuit, a frequency signal processing circuit, a NAMUR signal processing circuit, an NPNPNP signal processing circuit, a frequency processing circuit, an MCU control circuit, a TTL output interface, an isolation chip, a square wave processing circuit, a filtering circuit, a DC output circuit, and an alarm relay. The voltage conversion circuit is connected to the transformer via the transformer coil drive circuit. The transformer supplies power to the hazardous and safe zones via the first AC voltage rectification and filtering circuit. Multiple intrinsically safe terminals in the hazardous zone are connected to the frequency processing circuit via three signal processing circuits. The frequency processing circuit outputs to the MCU control circuit. The MCU output sequentially passes through the TTL interface, the isolation chip, the square wave processing circuit, and the filtering circuit to the DC output circuit. This invention achieves frequency signal to analog quantity conversion and safety isolation, increasing system stability.

The embodiment of the utility model discloses an overhead cable breakage monitoring system, which is used for improving the effectiveness of overhead cable breakage monitoring. The scheme provided by the utility model comprises a cloud platform; a plurality of monitoring modules distributed on the aerial cable, wherein any monitoring module comprises a voltage sensor, a microcontroller, a communication module and a standby power supply; wherein the voltage sensor is electrically connected with an aerial cable and is used for acquiring three-phase voltage of the aerial cable; the microcontroller is in communication connection with the voltage sensor and is used for generating a disconnection judgment result corresponding to the three-phase voltage according to a preset disconnection judgment rule, and the disconnection judgment result carries information of a disconnection point position; the communication module is in communication connection with the microcontroller and is used for reporting the disconnection judgment result of the three-phase voltage to a cloud platform; the standby power supply is used for supplying power to the monitoring module under the condition that the overhead cable is powered off; and the cloud platform is used for controlling the overhead cable to be powered off according to the disconnection point positions indicated by the disconnection judgment results reported by the plurality of monitoring modules.

The utility model relates to the technical field of test circuits, in particular to a test circuit, which comprises a charging module and a working module, and the charging module and the working module are both electrically connected with a charging power supply. The charging module is used for performing information interaction with a charging power supply and supplying power to the working module at the same time; and the working module is used for charging the rechargeable battery BAT and performing voltage reduction output on the charging power supply. According to the test circuit, the working module and the charging power supply are communicated through the charging module, power supply safety can be improved, the test circuit can serve as a communication bridge between the working module and the charging power supply, information exchange is improved, and meanwhile the working module carries out centralized management on integrated charging and voltage reduction discharging; therefore, under-voltage protection, short-circuit protection and over-temperature protection are achieved at the same time, and the overall safety and universality of the circuit are greatly improved.

The invention is suitable for the technical field of electric power distribution, and relates to a transformer area island protection method under fault power failure, a medium and a terminal, and the method comprises the steps: S10, installing a passive island protection device at a photovoltaic user grid-connected point, carrying out the communication with a communication gateway through a carrier wave, and achieving the conventional protection through the overvoltage / undervoltage and overvoltage / underfrequency motion principles; s20, an anti-islanding protection device is installed at a low-voltage bus of the distribution transformer on the transformer area side, and the anti-islanding protection device is used for reading the turn-off state of a low-voltage main switch, has an operation locking function and communicates with the communication gateway through RS485; s30, a communication gateway is installed on the transformer area side, and communication with the power distribution information system master station is established for uploading information of the protection devices on the local side and the transformer area side; and the main station is also used for sending commands issued by the main station to realize remote control of the main station. The method is simple in process and convenient to operate, detection blind areas can be effectively eliminated, and the recognition accuracy is improved.

The utility model discloses a dual power supply switching type power distribution cabinet, which relates to the field of power distribution cabinets, and is characterized in that the power distribution cabinet comprises a power distribution cabinet main body, a dual power supply switching device is arranged at the upper part of the back of the power distribution cabinet main body, and one interface of the dual power supply switching device is connected with an external power supply. One interface is connected with a storage battery on the power distribution cabinet main body, and the storage battery is also connected with an external power supply, so that normal operation of power distribution cabinet equipment can be guaranteed, and chain reactions such as industrial equipment shutdown, business system paralysis, medical equipment interruption and data loss caused by sudden power failure are avoided; and meanwhile, a secondary fault of a regional power system is effectively prevented through a dual-power seamless switching mechanism, and the reliability and the safety of power supply are improved.

This application discloses a power supply circuit and system, and a mobile device, belonging to the field of electronic technology. The circuit includes a pre-charging unit and multiple power distribution branches. The positive input terminal of each power distribution branch is connected to the input terminal of the pre-charging unit, and the positive output terminal of each power distribution branch is connected to the respective output terminal of the pre-charging unit. The input terminal of the pre-charging unit is also used to connect to the positive power supply terminal of a power source, and the positive output terminals of each power distribution branch are used to connect to loads. The pre-charging unit outputs pre-charge energy to the target load when pre-charging is required for the target load corresponding to the target power distribution branch. The target power distribution branch remains off when the voltage corresponding to the target load is less than a preset threshold, and turns on when the voltage of the target load is greater than or equal to the preset threshold, to supply power to the target load. This application can effectively suppress surge currents or inrush currents that may occur when capacitive loads are powered on, thereby improving the safety and reliability of power supply.

This utility model relates to the field of wind turbine generator box-type transformer technology, specifically to a high-voltage side power supply monitoring device for a box-type transformer based on a voltage transformer. The device includes: a first voltage side, a box-type transformer, a second voltage side, a UPS, a dual-power switching device, and a power consumption side connected in sequence. The first voltage side includes: a first voltage cable inlet and a first voltage switch connected in sequence, and a voltage transformer. The first voltage winding of the voltage transformer is connected to the first voltage cable inlet, the second voltage winding of the voltage transformer is connected to the dual-power switching device, and the first voltage switch is connected to one end of the box-type transformer. This utility model improves the power supply reliability of wind farms, achieves efficient automated management, quickly responds to faults, reduces safety hazards, ensures stable operation, and promotes the intelligent transformation of the wind power industry.

The invention discloses a capacitor device, a power supply circuit and electronic equipment, and belongs to the technical field of electronic equipment. The capacitor device comprises: a capacitor core; the electrode lead is electrically connected with the capacitor core; and the safety module is connected in series to an electric loop between the electrode lead and the capacitor core, and the safety module is configured to disconnect the electric loop between the electrode lead and the capacitor core under the condition that the working condition state of the capacitor device meets the preset working condition state.