46 results about "Power station" patented technology

A wind power plant and a method of start up at least a part of a wind power plant connected to an external grid substantially without any energy delivered from the external grid for the start up is provided. The wind power plant having a plurality of wind turbines and at least one power source connected to at least one of the wind turbines in order to start the wind turbine while isolated from the remaining wind turbines. The started wind turbine may then supply power in order to start further wind turbines. Power may be delivered to the grid from the started wind turbines.

In a maintenance management system and a method of providing engineering support, maintenance information concerning generating plants owned by a user is provided to a maker, and the maker analyzes such items of information, and manages the information in a structure maintenance management system. The user accesses the maintenance management system through the Internet, extracts information to be obtained from databases, and implements maintenance activities or drafts a plan. Engineers of the maker register maintenance information through an intranet, and provide engineering support for the maintenance activities promoted by the user.

The invention discloses an intelligent monitoring device for temperature and insulation state of a 330KV high-voltage cable in a hydropower station. The device is characterized by being provided with a central processing module unit (CPU), a data acquisition and conversion unit, a light transmitting/receiving module, an alarm output module, a plurality of optical fiber temperature sensors and a plurality of current sensors, wherein the data acquisition and conversion unit is used for transmitting digital signals to the CPU under the control of the CPU; the light transmitting/receiving module is used for transmitting electrical signals to the data acquisition and conversion unit; the alarm output module can be used for communication with a remote monitoring system; the optical fiber temperature sensors are respectively arranged at the joints of the high-voltage cable to be detected and used for connecting temperature detection signals to the light transmitting/receiving module; and thecurrent sensors are respectively arranged on joint metal sheaths of the high-voltage cable to be detected and used for connecting current detection signals to the data acquisition and conversion unit. The device is particularly suitable for safety monitoring of the 330KV high-voltage cable in the hydropower station, can realize real-time monitoring of the temperature and the insulation state of the cable in the hydropower station, and can also ensure self safety.

A wind power station comprises a wind rotor; a transmission mechanically coupled to the wind rotor; an asynchronous generator having a generator rotor mechanically coupled to the transmission, and a generator stator electrically coupled to a power grid; and a protection unit protecting the generator and the transmission against accidental breakdowns of an alternating voltage provided by the power grid. The Protection unit includes at least one choke electrically arranged between the power grid and the generator stator, and a synchronous electrical machine electrically coupled to the choke.

The invention provides an automatic verification method and a system of a coal mill inlet air quantity measuring apparatus, and is applied to inlet air quantity measuring apparatuses of a power station boiler pulverizing system. The automatic verification method of the coal mill inlet air quantity measuring apparatus includes: an air quantity calibration instruction is received, according to the air quantity calibration instruction, a coal mill outlet fast-closing door, a hot primary air adjusting door, a cold primary air adjusting door, and an inlet isolation door are opened, and a coal mine ventilation channel is established; in the condition of different air quantities, the air temperature, the air speed, and the air pressure in each coal-conveying pipeline are measured, and the air quantity in each coal-conveying pipeline is calculated according to the air temperature, the air speed, and the air pressure; according to the sealing air quantity, the coal mill inlet air quantity, and the air quantity in each coal-conveying pipeline, coal mill inlet air quantity verification coefficients in different conditions are calculated; the deviation of the inlet air quantity verification coefficients in different air quantity conditions and the average inlet air quantity verification coefficient is calculated; and whether the work state of the inlet air quantity measuring apparatus satisfies the predetermined condition is determined according to the deviation.

The invention relates to the technical field of reservoir optimization scheduling, in particular to an automatic correction system for the reservoir entering flow of a cascade reservoir. The system comprises a historical data module, an interval control value analysis module, a data server, a water affairs real-time module and a correction module, wherein the historical data module is used for storing water affairs information input into each power station interval of the cascade reservoir over the years through the data server; the interval control value analysis module is used for calling the information in the data server and analyzing and calculating the control value; the water affairs real-time module is used for storing the water affairs calculation information input into each powerstation interval of the cascade reservoir in the current day through the data server; and the correction module is used for correcting the reservoir entering flow. By use of the automatic correctionsystem for the reservoir entering flow of the cascade reservoir, the reservoir entering flow of the reservoir can be effectively corrected, in addition, the system has an automatic correction effect,and a manual operation is reduced.

The invention provides an energy storage optimal configuration method and system. The energy storage optimal configuration method comprises the following steps: determining the discharge price of an energy storage power station during peak period, determining the charging price of the energy storage power station during valley period and determining the compensation price of auxiliary services forthe energy storage power station participating in peak shaving; determining the maximum net income of the energy storage power station based on the discharge price of the energy storage power stationduring the peak period, the charging price of the energy storage power station during the valley period and the auxiliary service compensation price of the energy storage power station participatingin peak shaving; and determining the capacity allocation of the energy storage power station based on the maximum net income and constraint conditions of the energy storage power station. According tothe energy storage optimal configuration method and system, electronic equipment and the storage medium, the energy storage power station is optimally configured based on the price mechanism so thatthe optimal capacity configuration of the energy storage power station can be determined, the income of the energy storage power station can be maximized and the large-scale application of the energystorage power station can be facilitated.

The invention provides an intelligent front-end multimedia information acquisition system used for accurately monitoring power station equipment. The system comprises a plurality of groups of data acquisition devices arranged in a production area I. The data acquisition devices are connected with equipment systems in the production area I. The data acquisition devices are further connected with anintelligent front-end data server arranged in a production area II through a first one-way safety isolation device. The intelligent front-end data server is connected with a second one-way safety isolation device. The second one-way safety isolation device is connected with a cloud server arranged in a management information large area through a private network. The system does not perform the simple lossy compression on acquired real-time data, wherein the sampling frequency and the data compression are dynamically adjusted according to actual needs. Meanwhile, data acquired in real time arestored in a structured database, while data not acquired in real time are stored in a non-structured database. Moreover, the data acquired by the system has the advantages of accuracy, integrity andconsistency. The system is safe in data transmission and high in efficiency. The same coding rule is adopted, and the data application is more efficient, more convenient and more purposeful.

The invention discloses a cross-basin water transfer and energy storage system and a water transfer and energy storage method, particularly relates to various major basins and main power grids, and belongs to the field of the water resource and energy storage. The disclosed cross-basin water transfer and energy storage system is a multi-level system formed and constructed through various cross-basin water ways and water transfer and energy storage power stations according to the provided water transfer and energy storage technical method; and by means of the cross-basin water transfer and energy storage system, water resource allocation of various area scales can be achieved, and meanwhile corresponding water power energy storage systems can be established. According to the disclosed cross-basin water transfer and energy storage system embodiment, the purposes and the application are not limited in establishing of a cross-basin river and lake major cycle and the water transfer and energy storage power stations at the corresponding nodes, macroscopic overall water resource allocation can be achieved, meanwhile, grid-connection regulation and control are conducted on the state grid corporation of China and the China southern power grid, and in other words, river and lake energy storage and water power generation can be achieved; and the problems about water resource supply and demand contradiction and development and utilization and the problems about electric power supply and demand contradiction and energy abandoning are effectively solved.

A device and method thereof for analyzing in a reliable and particularly precise manner all components of a technical installation. Underlying dependencies of the components (K1 to Kn) of the technical installation (1), particularly a power plant, are stored in a structure module (14) in order to analyze these components (K1 to Kn). The other components (K1 to Kn), which are interrelated with one component (K7, K1 to Kn) that is to be analyzed, are identified and output based on the dependencies that are stored in the structure module (14).

The invention discloses a cascade hydropower station optimal scheduling system and method, and a safety power grid system, and the method comprises the steps: carrying out the preliminary calculationof each power station of a cascade power station group through the predicted storage flow condition and planned output of each power station of the cascade power station group, and obtaining the stateof the cascade power station group; traversing the state sequence of each power station of the cascade power station group according to the time sequence, if the state of the current time period of the cascade power station group meets the set requirement, completing the calculation of the scheduling time period, and if not, performing water abandoning risk assessment according to the length of the pre-abandoning time, and performing output adjustment on the current time period. Through the scheme provided by the invention, each cascade power station is balanced in water abandoning risk underthe condition of meeting cascade overall operation optimization in the whole dispatching process, water abandoning is relatively reasonable, cascade water and electricity operation is optimized, andcascade water energy resources are fully utilized.

The present invention provides a reactive compensation circuit based on the improved Buck-boost alternating current chopper, an energy management system used for a power station transformer vibration energy collector is formed by a multiple voltage rectification circuit, a vibration-type energy collector and the power management circuit of the vibration-type energy collector. The energy management system used for the power station transformer vibration energy collector overcomes the problems of load matching and circuit loss in an interface circuit of a piezoelectric energy collector, optimizes that the piezoelectric energy collector circuit fully collects energy output by an energy convertor and improves the energy storage efficiency.

The invention discloses a method for preventing concrete of a spillway tunnel of a hydropower station from cracking and a concrete modification method and particularly relates to a method for modifying the concrete in the spillway tunnel of the hydropower station. According to the method for preventing concrete of the spillway tunnel of the hydropower station from cracking, after the scouring-resistant and abrasion-resistant concrete of the spillway tunnel is poured, no crack is found, and chemical grouting and polymer chemical material sealing treatment are conducted on construction joints and structural joints prearranged in the concrete construction process; detection is conducted in the tunnel after water is introduced into the tunnel for six months, no crack exists on the concrete in the tunnel, and the construction joints and the structural joints prearranged in the construction process are not changed obviously after being scoured. According to the method, through full-responsibility layering and blocking and prearranging of the construction joints, foundational restraints are effectively reduced, and the concrete construction quality is strictly controlled; a comprehensive temperature control measure is taken, so that cracks, which are not arranged in advance, of the concrete are effectively avoided, chemical grouting and polymer chemical material sealing treatment are conducted on the prearranged regular joints, and thus concrete treatment can meet the design requirement.

The invention discloses a power station boiler balanced combustion optimization method based on data driving, which includes a front-end sensor, a data model, a balanced combustion control center, flow velocity adjusting equipment, combustors and a flow velocity and flow measurement sensor, wherein the front-end sensor is used for detecting parameters reflecting the combustion state in a hearth, the data model analyzes and judges whether deviated combustion and insufficient combustion exist in the hearth or not, the balanced combustion control center receives output of the data model and air powder flow velocity and flow parameters measured by the flow velocity and flow measurement sensor, then analyzes and calculates an adjusting instruction, and sends the adjusting instruction to the flow speed adjusting equipment, and the flow speed adjusting equipment can change the resistance of a primary air pipeline and adjust the air powder flow speed and flow of the corresponding combustor, so that air powder combustion of all the combustors is optimized, sufficient combustion is achieved, and the combustion efficiency is improved. Primary air powder deviation can be adjusted on line under data driving, deviation combustion in the furnace is effectively solved, the combustion efficiency is improved, and coal consumption is reduced.

The invention discloses an integrated monitoring system for a power station steam turbine electric hydraulic control system based on a Modbus protocol, which relates to an automatic control system for generating station unit equipment and particularly relates to a Modbus protocol-based power station equipment DCS (Distributed Control System) integrated monitoring system. The system of the invention is composed of a steam turbine electric hydraulic control system, a unit DCS control system and a data communication network, wherein the data communication network comprises an EHCS (Electric Hydraulic Control System)-side communication interface station and a DCS-side communication interface card; the EHCS-side communication interface station is interconnected with the DCS-side communication interface card via a serial converter. Data communication is realized through the Modbus protocol, the unit DCS control system executes a monitoring operation process on the steam turbine electric hydraulic control system through an operator station, monitoring and operation on all important parameters and equipment of the steam turbine electric hydraulic control system are completed, the training workload and the maintenance workload of an operator can be greatly reduced, and the technical problems of not high information and data sharing degree between the power station steam turbine electric hydraulic control system and the unit DCS control system which are mutually independent and have different regulations and low system integration degree can be solved.

The invention discloses a roof rainproof power station photovoltaic convergence box protection cover, which comprises a base plate and a top plate, and is characterized in that the bottom end of the top plate is provided with an inner corner plate, both the left side and the right side of the bottom end of the base plate are provided with an isolation plate, the bottom end inside the base plate is provided with a sliding rail, the left side inside the base plate is provided with a rotating wheel, the rotating wheel is connected with the sliding rail through a connecting column, the outer side of the rotating wheel is provided with a rotating sleeve, and the right end of the rotating sleeve is provided with a telescopic baffle plate. According to the roof rainproof power station photovoltaic convergence box protection cover, through cooperation of the inner corner plate, the isolation plates and the telescopic baffle plate, the rainproof performance of the top plate is improved by the inner corner plate, the base plate is placed on the isolation plates so as to prevent the base plate from being eroded and damaged by being directly contacted with the ground, the placement height of the isolation plate is adjusted through cooperation between a screw and a rotary table and a rotary groove, the rainproof effect is improved, the telescopic baffle plate is taken out through cooperation of the rotating sleeve and the sliding rail, and the rainproof performance of a convergence box is improved. Meanwhile, overhauling is carried out conveniently, and protection for the convergence box is greatly enhanced.

The invention discloses a clamping device for a confined space in a shelter power station and relates to the technical field of clamping tools. The clamping device comprises a first clamping arm, a second clamping arm and a clamping part and is characterized in that a first clamping piece is fixed at the front end of the first clamping arm, a first holding part is fixed to the rear end of the first clamping arm, and the first clamping piece and the first holding part are connected through a first connecting rod; a second clamping piece corresponding to the first clamping piece is fixed at thefront end of the second clamping arm, a second holding part is fixed at the rear end of the second clamping arm, the second clamping piece and the second holding part are connected through a second connecting rod, and the first connecting rod and the second connecting rod are connected through a hinge pin; the clamping part is connected with the first clamping piece, the clamping part is providedwith an accommodating space for accommodating a first to-be-clamped part, and the accommodating space is suitable for the mounting of a gasket and a nut in the confined space. The clamping device is novel in structure and convenient to operate.

The invention discloses ash bucket feeding equipment for a thermal power plant. The ash bucket feeding equipment for the thermal power plant comprises bases and a vibration motor, wherein supporting columns are fixedly installed at the tops of the bases; a supporting plate is fixedly installed at the top ends of the supporting columns; an ash bucket is fixedly installed at the bottom of the supporting plate; the top of the ash bucket fixedly communicates with an ash inlet pipe; the bottom of the ash bucket fixedly communicates with an ash outlet pipe; a valve is movably installed on one side of the ash outlet pipe; a control panel is detachably installed on the front part of one base; and an anti-blocking mechanism is movably connected into the ash hopper. According to the scheme, the vibration motor can directly transmit vibration to dust through a second motor box, then a rotating motor can drive a movable rod, a connecting rod and a brush plate to rotate through a rotating rod, when the movable rod and the connecting rod rotate, the dust can become loose, and the brush plate can brush off the dust adhering to the inner wall of the dust hopper, so that the ash loosening work can be completed within a short time, and the situation that the service life of the ash bucket is shortened due to the fact that the vibration motor vibrates the ash bucket is avoided.

The invention provides an accident isolation disposal system and method for an energy storage power station. When an accident that the interior of an energy storage battery prefabricated cabin is outof control occurs, the accident isolation disposal system is started to isolate the energy storage battery prefabricated cabin where the accident occurs, and the whole energy storage battery prefabricated cabin is sealed in a closed space; and then the energy storage battery prefabricated cabin is effectively disposed through an exhaust subsystem 1, an immersion subsystem 2, a telescopic arm subsystem 3, a burying subsystem 4 and the like. The disposal process is safe, reliable, capable of saving energy and environmentally friendly.

The invention discloses a water storage tank circular seam structure and a manufacturing method thereof, and relates to the technical fields of high-capacity power station boiler water storage tank designing and manufacturing. The problems that an existing water storage tank circular seam structure is single in manufacturing method and lag in manufacturing technology, thus, a manufactured water storage tank is large in wall thickness margin, serious in inner surface wall thickness decreasing, discontinuous in structure and poor in machining quality are solved. According to the water storage tank circular seam structure, a water storage tank comprises two sealing heads and a plurality of barrel sections, all the barrel sections are sequentially spliced into a barrel body along the axes of the barrel sections, the two sealing heads are arranged at the two ends of the barrel body correspondingly, the ovality of the barrel body and the sealing heads is +/-0.6mm, and the thickness deviationbetween the barrel body and the sealing heads is 0-2mm; and a butt-joint circular seam groove is formed between every two adjacent barrel sections, a butt-joint circular seam groove is formed betweeneach sealing head and the corresponding barrel section adjacent to the sealing head, and the butt-joint circular seam grooves are connected through a welding mode. The manufacturing method is used for manufacturing of the water storage tank circular seam structure.

The invention discloses a mobile energy storage power station system. According to the system, batteries are assembled into a battery pack by means of series-parallel connection; the working status ofeach battery is monitored through an BMS (battery management system); the charging and discharging process of the battery pack is completed through a PCS (process control system); a fire-fighting system, a monitoring system, a security system and other systems are arranged in the mobile energy storage power station system, so that a separate cabinet-type energy storage power station can be formed; an external power grid or new energy generation system is adopted to charge the energy storage station; and during discharging, stored electric energy is sent to a power grid or directly transportedto a use place with a wheeled trolley, so as to be transmitted to a user. With the mobile energy storage power station system of the invention adopted, the flexibility of electric energy supply can be improved, which mainly is reflected in the following facts that: the volatility of new energy power generation can be eliminated; a capacity to absorb new energy to realize grid connection is improved; load peak-to-valley differences can be reduced; the utilization rate of a power generation system can be improved; power supply reliability and power quality can be improved; the development of microgrids can be promoted; and maneuvering, efficient and large-capacity emergency backup power sources can be provided.

A method for operating a combined cycle power plant includes transferring exhaust gas from a gas turbine to a heat recovery steam generator. Further, the method includes preheating condensate before being fed as feedwater to the heat recovery steam generator. Moreover, the method includes reheating the feedwater in the heat recovery steam generator. The method also includes generating steam in the heat recovery steam generator for a steam turbine, wherein preheating the condensate includes monitoring a temperature of the condensate: if the temperature of the condensate is equal to or above a preset temperature, directing the condensate to a low-pressure economizer of the heat recovery steam generator; if the temperature of the condensate is lower than the preset temperature: directing a first fluid from an intermediate source of the low-pressure economizer to heat the condensate.

A gulf stream electric generator including a first funnel, a second opposite funnel, a propeller, and an electric turbine. The first funnel is a funnel and is placed such that the narrow end connects to an elongated tube. The second funnel is connected to a second end of the elongated tube such that the narrow end is connected to the tube. A propeller is placed within the elongated tube. The propeller is operable coupled to an electric turbine generator. The electric turbine will create an electric charge and send it to a power station for distribution.