74results about How to "Reduce conversion links" patented technology

The invention relates to an electromagnetic and electromechanical transient digitalized hybrid real-time simulation method for a power system, and belongs to the technical field of transient digital simulation of the power system. The method comprises the following steps of: performing electromagnetic transient real-time simulation calculation on a first power system by adopting an electromagnetic transient simulation system; performing electromechanical transient real-time simulation calculation on a second power system by adopting an electromechanical transient simulation system; and setting a field programmable gate array between the electromagnetic transient simulation system and the electromechanical transient simulation system, wherein the field programmable gate array is used for the digitalized connection between the electromagnetic transient simulation system and the electromechanical transient simulation system. By the simulation method, an electromagnetic transient hybrid real-time simulation digital quantity interface is formed by utilizing a digitalized communication technology; the simulation precision of the electromagnetic and electromechanical transient hybrid real-time simulation is greatly improved; conversion links are effectively reduced; the synchronization information contact of the electromagnetic and electromechanical transient hybrid real-time simulation can be realized; and the practical application of the electromagnetic and electromechanical transient hybrid real-time simulation is advanced greatly.

The invention discloses a hydraulic driving device which comprises a driving device, an input device and an output device, wherein the input device comprises an input cylinder. A plunger is arranged in the input cylinder, an input hydraulic cavity is formed by one end of the plunger and the input cylinder, and hydraulic medium is put into the input hydraulic cavity. A guiding block is arranged outside the input cylinder, and a position limiting structure is arranged between the guiding block and the plunger. The output device comprises an output cylinder, and an output piston is arranged in the output cylinder. A reset spring is arranged between the output side of the output cylinder and the output cylinder, and an output hydraulic cavity is formed by the other end of the output piston andthe output cylinder. The output hydraulic cavity is connected with the input hydraulic cavity. The hydraulic driving device is characterized by comprising a servo motor; one end of the servo motor isconnected with a sliding screw rod through a coupling; and the sliding screw rod is connected with the plunger far from one end of the input hydraulic cavity. By utilizing the driving device and thefunctions of the input device and the output device, the invention enhances the utilization rate of energy sources, realizes low pollution and is easy to detect and control output force.

The invention discloses a floating lighthouse type natural-vibration-frequency-adjustable wave-energy directly-driven power generation device, which is characterized in that two supporting points at the lower end of a portal frame are connected to an oscillating buoy, a portal is connected with the upper end of a flexible connector, the lower end of the flexible connector is connected to the upper end of a connecting shaft, and the lower end of the connecting shaft is connected to the upper end of a generator rotor; the oscillating buoy is movably sleeved on the periphery of a straight cylindrical pipe, the lower end of the straight cylindrical pipe is rigidly connected with a horizontal damping cylinder, and a horizontal damping cylinder water-pipe is connected below the horizontal damping cylinder; a generator stator and a gravity recovery hammer are arranged in the straight cylindrical pipe, and the gravity recovery hammer is connected with the generator rotor; the bottom of the oscillating buoy is provided with an oscillating buoy water-pipe; an additional floating cylinder is sleeved on the straight cylindrical pipe between the oscillating buoy and the horizontal damping cylinder water-pipe; a longitudinal damping plate formed by crossing two plates is connected to the bottom of the horizontal damping cylinder, and the surface of the longitudinal damping plate is vertical to the bottom surface of the horizontal damping cylinder; an anchor chain is connected to the horizontal damping cylinder; and parts (corresponding to the upper and lower upper limit positions of the oscillating buoy) of the straight cylindrical pipe are respectively provided with upper and lower limited blocks of a buffer.

The invention provides a recovering system for slewing and braking energy of an excavator. A hydraulic energy accumulator serves as an energy storage element, a slewing motor / pump serves as an energy conversion element, inertia energy of a rotary table is converted into hydraulic energy and stored in the energy accumulator, namely, in the braking process, the slewing motor operates in the pump working condition, the slewing and braking energy of the excavator is recovered and stored in the energy accumulator, the energy is released during starting of the next time, by means of the control over energy distribution of an engine and the energy accumulator (a main power source and an auxiliary power source), the slewing and braking energy of the excavator is recovered and reused, and the purpose of energy saving is achieved.

The invention discloses a non-contact handling device and relates to a handling device. The device comprises a cover body with a cylindrical inner hole, gyratory fan blades arranged in the cover body and a power input shaft for driving the gyratory fan blades to rotate, wherein the central position of the top end of the cover body is provided with a power input shaft mounting hole and air sucking ports distributed on the periphery of the power input shaft mounting hole; each gyratory fan blade consists of a shaft sleeve and blades distributed on the shaft sleeve; the lower parts of the blades are vertical, the upper parts are bent, and the bending directions of the blades are consistent with the rotation directions of the gyratory fan blades; and one end of the power input shaft passes through the power input shaft mounting hole and is connected with the shaft sleeve of the gyratory fan blades in the cover body, while the other end is connected with a rotary drive device arranged outside the cover body. The device has the characteristics of low energy consumption and strong suspension force, can be driven by adopting a motor, has the advantages of low cost, wide application range, large motion range, and the like, conforms to the development trends of energy saving and high efficiency in the semiconductor industry at present and is easy to popularize and apply.

The invention discloses an electrical type balance oil cylinder potential energy recycling system. On the basis of an original movable arm drive system, a balance oil cylinder, a double-direction hydraulic pump / motor and an electric motor / electric generator are additionally arranged, conversion storage is achieved through the hydraulic pump, the electric motor / electric generator and a power battery, gravitational potential energy of a movable arm device is converted into electric energy to be stored, or the electric energy is converted into hydraulic energy to drive the movable arm to ascend, through control over the rotating speed of the electric motor / electric generator, releasing of electric energy can be controlled, the ascending speed of the movable arm can be controlled, and the defect that in hydraulic energy storage, the releasing process of energy stored in a hydraulic energy accumulator is not controlled is overcome. The electrical type balance oil cylinder potential energy recycling system is suitable for a hydraulic excavator, on the basis of not changing the operation structure of an original power system, gravitational potential energy of the movable arm is stored and released, energy is saved, and the very high economic value is achieved.

The invention discloses a two-AC and one-DC series-parallel microgrid structure suitable for multi-station integration. The series-parallel microgrid structure is formed by series-parallel connectionof an alternating-current sub-microgrid 1, an alternating-current sub-microgrid 2 and a direct-current sub-microgrid, wherein the alternating-current sub-microgrid 1 is connected with the direct-current sub-microgrid through a power conversion device and a connecting point 1, and the alternating-current sub-microgrid 2 is connected with the direct-current sub-microgrid through a connecting point2; the connecting point 1 and the connecting point 2 are DC / AC conversion devices, the connecting point 2 is a standby power supply point of the connecting point 1, the energy of the connecting point2 can only flow in one direction, and the voltage is rapidly supported for the direct-current sub-microgrid only when the connecting point 1 fails; the alternating-current sub-microgrid 2 comprises aNo.2 energy storage and station transformer, a 400V / 380V isolation transformer, an energy storage battery and an AC / DC conversion device; the NO.2 energy storage and station transformer is connectedwith an external network, the 400V / 380V isolation transformer and the AC / DC conversion device, and the AC / DC conversion device is connected with the energy storage battery. The series-parallel microgrid structure is high in reliability, wide in coverage, high in fusion degree and excellent in economy.

A multifunctional integrated high-pressure metering device is used for improving metering precision, and the volume and cost of the device are reduced. The technical scheme is that the multifunctional integrated high-pressure metering device comprises a three-phase voltage mutual inductor, a three-phase current mutual inductor, a metering control circuit and a high-voltage switch controlled by anelectric operation mechanism; the three-phase voltage mutual inductor and the three-phase current mutual inductor respectively collect the voltage and current signals of a high-voltage power supply circuit; the metering signals outputted by the three-phase voltage mutual inductor and the three-phase current mutual inductor are connected to the signal input end of the metering control circuit; thehigh-voltage switch is serially connected in the high-voltage power supply circuit; the control end of the electric operation mechanism is connected to the control signal output end of the metering control circuit. The device of the invention is integrally designed; while the metering precision is improved, the repeated setting of functional elements is avoided, so that the volume of the meteringdevice is decreased, and the manufacture cost is reduced.

The invention discloses a wireless access device and method which are used for accessing a wireless local area network and a wireless sensor network into Internet and aim at realizing fast and simple connection between Zigbee wireless sensor nodes and the Internet by utilizing wireless access function of WI-FI (wireless-fidelity) wireless access points and strong network support capability and providing support for fusion of the wireless sensor network and the Internet. The wireless access device comprises a radio frequency module, a wireless local area network access module, an access module for Internet of things and a public data processing module, wherein the wireless local area network access module is respectively connected with the radio frequency module and the public data processing module; and the access module for the Internet of things is respectively connected with the radio frequency module and the public data processing module.

The invention discloses a photovoltaic LED direct-current power supply control system which comprises a photovoltaic array, a controller, an energy storage battery, a drive control module, an LED load, a grid-connected inverter and a public supply network. The controller is connected with the photovoltaic array and used for carrying out voltage conversion on direct currents output by the photovoltaic array to charge the energy storage battery and detecting the electric quantity of the energy storage battery. After the electric quantity of the energy storage battery is saturated, redundant electric energy is input to the grid-connected inverter by the photovoltaic array. The drive control module is connected with the energy storage battery and used for carrying out voltage conversion on output voltages output by the energy storage battery to supply power to the LED load. The grid-connected inverter is connected with the photovoltaic array and the public supply network and used for carrying out contravariant conversion on the redundant electric energy output by the photovoltaic array to form alternating currents to be conveyed to the public supply network. Direct-current direct supply is really achieved, conversion links are reduced, the effects of environmental protection and energy saving are achieved, and meanwhile the functions of peak regulation and the like are achieved.

The invention discloses an electro-hydraulic energy recovery and release system for slewing brake of engineering machinery. The electro-hydraulic energy recovery and release system comprises an energy recovery and release mechanism and a control unit. The control unit comprises a controller and a first pressure sensor. The energy recovery and release mechanism comprises a hydraulic energy storage unit, an electromagnetic reserving valve, a hydraulic motor, a sequence valve, a first check valve and a second check valve. Kinetic energy generated during slewing brake of the engineering machinery can be stored by the hydraulic energy storage unit, the controller controls the electromagnetic reversing valve to release the energy stored in the hydraulic energy storage unit according to the load of a main variable pump so as to drive the hydraulic motor to provide a torque to the main variable pump, and thus fuel oil consumption of an engine is reduced and work efficiency of the engineering machinery is improved.

The invention relates to a dual-compressor mixed power fuel gas heat pump air conditioner, with multifunction, energy-saving and environment-friend properties. Wherein, the system engine (1) is connected to the open compressor (2) via axle or belt; the exhaust tube of open compressor (2) is combined with the exhaust tube of direct-current variable-frequency compressor (9) to connect the oil separator (3); the sucker of open compressor is combine with the sucker of direct-current variable-frequency compressor (9) to connect gas-liquid separator (8); the output of oil separator (3) is connected to the inlet A tube of four-way valve (4); the first output C tube of four-way valve (4) is connected to the gas-liquid separator (8); the second output B tube is connected to the indoor heat exchanger (7); another end of indoor heat exchanger (7) is connected to the throttle device (6); another end of throttle device is connected to the outdoor heat exchanger (5); another end of outdoor heat exchanger is connected to the third output D of four-way valve.

The invention discloses a direct-current power supply system applicable to pure electric bus charging stations and a charging station thereof. The direct-current power supply system comprises a three-phase power grid which is connected with a primary winding of a harmonic shielding transformer. A secondary winding of the harmonic shielding transformer is connected with a rectifier module and a filter. A static var generator is connected in parallel between the three-phase power grid and the primary winding of the harmonic shielding transformer. Pure electric bus charging station filtering and reactive power compensation are realized, the harmonic content of the pure electric bus charging station is reduced, and the power factor of the pure electric bus charging station is improved.

The invention discloses a focal distance measuring device and the measuring method for long focal distance lens. The laser leading out from the strong laser source or other laser with the same frequency are gathered by lends after being combined into parallel ray through extender device, then transmitted out from the large aperture lens. Then adjusts the sliding board till the emitted ray of the measured lens is parallel ray, thus the measured focus must be at the proper position. The localization of the focus and the diameter size measurement can be completed with an amplified and labeled surface array CCD measuring head. The focal distance L can be measured with paten 01108773.0. The invention needs no large expensive collimating pipe, uses the reversal method, thus the measured lends is changed into lend with parallel pipe.

A rotary engine with double rows of pistons belongs to the field of power machinery and consists of a spindle (1), two symmetrical opposite elliptical track groove discs (2), two symmetrical air exhaust double-layered sleeves (3), double-T-shaped rolling connecting rods (4), a bidirectional cylindrical rotating cylinder (5), turning gears (6), gear shafts (7), crank connecting rod piston type single-cylinder engine heads (8), pistons (9), piston rod racks (10), a cylindrical shell (11) and the like. Two or four or a plurality of even-number engine heads (8) are respectively symmetrically mounted on two side surfaces of an engine head tray (12) around centers of the two side surfaces, so that a rotary engine head assembly with double rows of pistons is formed; two rolling connecting rod bearings (18) are inserted into two symmetrical opposite elliptical track grooves (19); and the two piston rod racks (10) and two vertical rod racks (20) are respectively meshed with the two turning gears. The rotary engine is simple and compact in structure, long in service life, stable in running and low in vibration and noise, is high-efficiency, energy-saving and emission-reduction, not only can be made into a gasoline engine, but also can be made into a diesel engine, and is applicable to various types of fuels.

The device consists of signal collecting component connecting with piano frame and fingerboard separately. The component comprises components of light-emitting and light-receiving as well as grating which is set in between the two components and can be moved relatively with them. The two components and the grating are moved relatively following the movement of fingerboard moving relatively to the piano frame so the light signal from light-emitting component can be received by light-receiving component through grating which is moved relatively to convert operation parameter to be relevant pulse digital signals of playing strength, up and down direction, state and key playing speed for post processing by computer and circuit in order to output detection result accurately.

The invention relates to a water tube type electric water heater for providing hot water for washroom and bathroom. It includes a control circuit containing high-frequency resonance coil and an iron or stainelss steel water tube with strong high-frequency eddy-current thermal effect, the water inlet of said water tube is communicated with water pool, and water outlet is connected with water tap. Said control circuit also includes a water flow impact type contactless switch. Said invention has the advantages of general electric water heater and gas water heater simultaneously.

The hydraulic ABS device for motor vehicle includes braking pump, brake and braking pressure regulator. It features the braking pressure regulator consists of casing, stepped plunger, spring, and end cap. The stepped plunger is installed inside the work cavity of the casing to divide the work cavity into braking cavity and control cavity. The braking cavity is communicated via oil channel with the braking pump and the brake, and the control cavity is communicated via oil channel with controlling pressure regulator, which is driven with the inertial force and installed on the vehicle frame. The controlling pressure regulator consists of cylinder, plunger, isolator, flywheel with cam, shaft disc, transmission shaft and casing. The present invention has the advantages of direct utilization of inertia energy for signal transmission and pressure regulation, simple structure of the device, small size, low cost, high sensitivity, etc.

The invention discloses a multi-dimensional fluid power generating system which comprises a support rack, a fluid conversion part and a rotation power generating part. The support rack is connected with the fluid conversion part through the rotation power generating part. The rotary power generating part mainly comprises a rotary box, and a speed increasing gear and a power generator disposed in the rotary box. The input shaft of the speed increasing gear extends out of the rotary box and is connected with the fluid conversion part / the support rack. The output shaft of the speed increasing gear is connected with the input shaft of the power generator. The rotary box is connected with the support rack / the fluid conversion part. The multi-dimensional fluid power generating system has the advantages that the system is simple in structure and layout and few in conversion links during power generation, and compaction of the overall structure of the power generating system is benefited; the fluid conversion part has no specific fluid absorption directions and can adapt to the natural flow direction and flow speed of fluids, and the fluid conversion part is low in construction or placing environments, reliable and stable.

The invention discloses a data interaction method, a device and a system and a readable storage medium, and the method comprises the steps: receiving target data transmitted by a processor according to an AXI protocol; wherein the processor is connected with the AXI bus; and storing the target data into the storage device according to the storage read-write protocol so that the external device reads the target data from the storage device according to the storage read-write protocol. According to the method, a conversion link between a high-speed bus and a low-speed bus is omitted, the AXI buscan be converted into a similar storage device interface, clock frequency conversion and data interaction between a processor and an external device are achieved through a storage device, high-speedtransmission of data can be kept, the time of the AXI bus can be saved, and the performance of the AXI bus can be released.

The invention discloses a tower-disc type solar energy comprehensive utilization system, which comprises a tower, a power generation system, a solar energy receiving device and a two-dimensional solar tracking system. The power generation system is mounted at the end of the tower and utilizes sunlight received by the solar energy receiving device to generate power. The solar energy receiving device is mounted to the tower by a support and used for receiving sunlight. The two-dimensional solar tracking system is mounted on the tower and used for driving the solar energy receiving device to track the sun so as to maximize the sunlight receiving capacity of the solar energy receiving device. The tower-disc type solar energy comprehensive utilization system further comprises a gas system and a natural light illumination system, wherein the gas system is used for enabling the power generation system to work continuously when in insufficient light. Accordingly, the combined solar energy comprehensive utilization system is formed.

The invention discloses a trough-type solar energy comprehensive utilization system, which includes a machine body, a solar energy receiving and transforming device fixed to the machine body, a generating system connected to the solar energy receiving and transforming device and fixed to the machine body, a rotation driving system mounted at one end of the solar energy receiving and transforming device, and a tracking transmission control system mounted on the solar energy receiving and transforming device, wherein the solar energy receiving and transforming device is used for receiving sunlight and transferring the sunlight into heat energy, and includes a face mirror; the generating system does work and generates power by utilizing the heat energy transformed by the solar energy receiving and transforming device; the rotation driving system is used for driving the face mirror; and the tracking transmission control system is used for driving the rotation driving system to rotate through light signals about sun positions, and maximizing the capability of receiving sunlight through driving the face mirror. The system further includes a fuel system used for enabling the generating system to work continuously under insufficient light, as well as a natural light illumination system and a cooling water circulating system, therefore, the comprehensive solar energy utilization system is formed.

The invention relates to an urban organic solid waste coupling dry pyrolysis gasification system, which comprises a sludge feeding storage device, a pre-drying device, a cyclone separator, a sludge special cloth bag and a smoke gas afterheat recovery device in sequential connection, wherein the cyclone separator and a sludge outlet of the special sludge cloth bag are connected with a cyclone fluidized bed gasification furnace; the cyclone fluidized bed gasification furnace is connected with a high-temperature separator; the high-temperature separator is connected with a second combustion chamber; high-temperature smoke gas generated by the second combustion chamber is used as a heat source of the pre-drying device; ash slag generated by the high-temperature separator and the second combustion chamber is fed into an ash slag cabin after being cooled by a cold slag conveying machine. Through the integration and the optimization by the system, a pre-drying and pyrolysis gasification two-section process is used; the process controllability and the operability are high. Compared with a conventional fixed bed or steam drying and fluidized bed gasification combination process, the processhas the advantages that the heat efficiency is improved by 10 to 15 percent. The sludge is subjected to pyrolysis gasification, so that the exhaust of harmful substances and NOx and Sox can be greatly reduced through being compared with the exhaust value of direct combustion; the tail gas treatment cost is reduced.

The invention discloses a method for generating low-temperature air and an apparatus thereof, i.e. a low-temperature air generator. A channel consisting of a heat exchanger and an insulation layer has the technical characteristics that pre-processed air is input from an input port of the channel to exchange cold energy with a cold medium or a low-temperature liquid in the heat exchanger in the channel so as to generate low-temperature air which is output from an output port of the channel. The generated low-temperature air provides cold sources for apparatuses or facilities including refrigeration houses, material low-temperature processing and cold treatment, refrigeration houses and the like; a low-temperature tunnel consists of the low-temperature air output by the low-temperature air generator and a material conveying tunnel to carry out pre-cooling (physical change) and cold treatment (chemical change) on materials, so as to realize low-temperature processing of materials by a low-temperature processing apparatus which is formed by combining the low-temperature air and a processing apparatus. The vaporization of the low-temperature liquid is continuous to ensure that the low-temperature air of the low-temperature air generator is continuous; and the materials are continuously lowered to the low temperature through the low-temperature tunnel so as to ensure that the low-temperature processing apparatus continuously processes, which has no precedent that the cold energy is abandoned and recycled to realize the low-temperature processing effect.

The invention discloses a micro-drive system and a clamping system comprising the micro-drive system. The micro-drive system is based on a shape memory effect and is driven by two shape memory alloy rods which are mutually perpendicular, a first shape memory alloy rod is electrified and contracts to push a drive piston to move forwards through a transmission rod assembly, a second shape memory alloy rod is electrified and contracts to drive the drive piston to reset, and at the same time, the two shape memory alloy rods can respectively serve as a drawing power source of each other to produce plastic deformation. The clamping system comprises the micro-drive system and an internal reflux area differential stroke amplifying device, due to the fact that a reflux hole is formed in an output piston, the differential effect is achieved, the effective acting area of the output piston is made to be only the cross sectional area of a piston rod, and therefore the amplification coefficient is improved on the basis of reduction of the size of the stroke amplifying device. Compared with a traditional drive clamping device, the clamping system is small in size, simple in structure, good in controllability, fewer in energy conversion steps, high in utilization rate of energy, free of pollution, and capable of protecting environment.

The invention relates to a magnetic particle flow power generation system having no rotary movement. The power generation system is characterized in that the magnetic particle flow power generation system is directly coupled with a prime motor; and the magnetic particle flow power generation system comprises a diversion pipe, a modulation magnetic circuit, a power generation magnetic circuit and magnetic particles. One end of the diversion pipe is provided with the modulation magnetic circuit, and the other end of the diversion pipe is provided with the power generation magnetic circuit; the magnetic particles are arranged in the diversion pipe; the magnetic particles form magnetic particle flow in the inner side of the diversion pipe under the action of magnetic force and expansion gases obtained after combustion in the prime motor; the power generation magnetic circuit realizes changes of magnetic circuit magnetic reluctance by utilizing the changes of the magnetic particle flow magnetic reluctance, and thus power generation and electrical operation are realized; the modulation magnetic circuit is in horizontal movement along the direction vertical to cross section of the diversion pipe; and the position of the power generation magnetic circuit is fixed with respect to the diversion pipe. The magnetic particle flow power generation system is simple in structure, can effectively improve energy utilization efficiency, has no rotation members, and can be widely used in a power generation system.

The invention discloses a hydraulic air compressor being energy saving power equipment for generating compressed air by using water energy. At present, low-fall water energy of global general rivers and streams is not used, and flows away in vain; the hydraulic air compressor uses water currents for impacting a water turbine to rotate, and uses a shaft of the rotating water turbine for driving an air compressor to generate the compressed air; the water turbine and the air compressor are combined as an integrated machine; and the water turbine at a slower rotating speed drives the air compressor through gear transmission or worm gear transmission to amplify the rotating speed of the air compressor. The hydraulic air compressor directly converts the water energy to the compressed air to apply to multiple environments needing the compressed air, so that the energy conversion link is reduced, the efficiency is improved, and the purposes of use of natural energy, energy conservation, environmental protection and cost saving are realized; and the hydraulic air compressor is used for ventilation oxygenation of aquaculture water bodies or oxygenation aeration of sewage treatment by using the compressed air, and is applied to more environments needing the compressed air.

The invention discloses an on-ball power supply and distribution device for mooring a balloon. An input end of the device is connected with a high-voltage cable, and the device comprises a ball powersupply and distribution unit, a load power supply and distribution unit and a data acquisition and processing unit; the ball power supply and distribution unit is connected with ball equipment, the load power supply and distribution unit is connected with load equipment, and the data acquisition and processing unit is connected with the ball power supply and distribution unit and the load power supply and distribution unit separately. The device has the advantages that by adopting power electronic transformation equipment and solid-state power distribution equipment based on power electronic technologies, the equipment weight is remarkably reduced; the two sets of power distribution equipment are designed to supply power to the ball equipment and the load equipment respectively, and the power supply reliability is improved; through the integrated design of power transformation, power distribution and communication, the intermediate conversion links of a power distribution system are reduced, and connection ports are simplified.

The present invention relates to an AC / DC mixed transformer substation, in particular to a transformer substation. The AC / DC mixed transformer substation has a high voltage AC incoming and outgoing line loop and a high voltage DC incoming and outgoing line loop simultaneously, and the high voltage AC incoming and outgoing line loop and the high voltage DC incoming and outgoing line loop are connected with a high voltage AC bus and a high voltage DC bus respectively. The conversion of voltage grades is carried out by an AC transformer or a DC transformer, and the electric energy conversion and electric energy distribution are realized. The transmission and conversion of the electric energy are realized between the AC bus and the DC bus via an AC / DC converting device. The AC / DC mixed transformer substation comprises at least one AC incoming and outgoing line loop, at least one high voltage DC incoming and outgoing line loop, at least one AC bus, at least one DC bus, at least one electric conversion device for voltage grade conversion, and at least one AC / DC converting device.