93results about How to "Reduce life loss" patented technology

The invention relates to a management optimization method in the field of alternating-current micro grids, and specifically to a multi-time-scale micro grid energy management optimization scheduling method. Aiming at the problems that the existing studies are incomprehensive on consideration of the running status of a micro grid, not detailed enough on the control strategy in each running status of the micro grid, insufficient on calculation accuracy of the running cost and the like, the method comprises a day-ahead economic optimization scheduling phase and an intraday economic optimization scheduling phase; the former considers the electricity price at peak, valley and flat time, and distributed unit power optimization allocation in the micro grid is performed according to day-ahead photovoltaic and load prediction by using the total running cost including the running and maintenance cost of a lithium battery and a fuel battery, interrupted compensation of an interruptible load, price of electricity sold by a large grid and the like as a target function; and the latter considers the outputs of electricity purchased from the large grid by the micro grid, a super-capacitor and the fuel battery, and an independent control strategy is respectively established for the peak, valley and flat time, so that the control strategies are more specific and detailed.

The invention relates to a method for controlling the operation of a high-voltage bypass in a thermal generator set, which is characterized in that operational modes of the high-voltage bypass are divided into the following four modes according to the operational states of the thermal generator set: a set starting mode, a set normal operation tracking mode, a mode of shutdown without blowing-out and a blowing-out mode, wherein the set starting mode is divided into three stages according to different operational requirements of a boiler: a first set starting mode, a second set starting mode and a third set starting mode. By using the method, the opening/closing of a high-voltage bypass valve and the opening of a valve position can be controlled according to different operational stages of the set, so that main recovery pressure of the boiler is ensured to ascend smoothly, operate stably and descend smoothly; and simultaneously, the boiler can also be controlled to improve the recovery temperature quickly, so that the recovery temperature is matched with the metal temperature of a gas turbine cylinder quickly and adapt to a combined mode of fixed pressure operation and sliding pressure operation of the set, so that the starting time of the set is shortened, steam exhausting towards air is reduced, the life loss of the steam turbine is reduced, and the optimal starting of the set is realized.

The invention provides a display panel, a driving method thereof and a display device, relates to the technical field of display, and aims at improving the life matching degree of different colors ofsub pixels. The display panel comprises repetition units, each repetition unit comprises a first type of sub pixels, common sub pixels and a second type of sub pixels, the common sub pixels and the first type of sub pixels form a first pixel unit, and the common sub pixels and the second type of sub pixels form a second pixel unit; and a driving period includes a charging period and a light emission control period. The method comprises that in the charging period, data signals are written into the first type of sub pixels, the common sub pixels and the second type of sub pixels; in the light emission control period, the first type of sub pixels, the common sub pixels and the second type of sub pixels are driven to emit light under effects of the corresponding data signals; and the light emission time length of the common sub pixels is lower than that of any of the first and second types of sub pixels. The method is used to driving the display panel to display a frame.

The invention relates to a once-through boiler, steam turbine and power grid coordinated control method for primary frequency modulation analysis. The invention aims to solve a problem that characteristics of the boiler are not considered in the prior art so that great resistance is brought to participation of a high-capacity high-parameter thermal power generation unit in primary frequency modulation and safe and stable running of an electric power system is not facilitated. The method comprises the steps of firstly, performing once-through boiler energy state analysis so as to determine the once-through boiler energy state; secondly, performing power grid energy state analysis so as to determine the power grid energy state; and thirdly, determining a grid source energy coordinated control strategy according to the once-through boiler energy state determined in the step one and the power grid energy state determined in the step two. The once-through boiler, steam turbine and power grid coordinated control method enables the thermal power generation unit to not only sufficiently participate in frequency modulation, but also be operate safely and efficiently under the premise of meeting a requirement of safe running of a power grid. The once-through boiler, steam turbine and power grid coordinated control method is applied to the field of primary frequency modulation analysis.

The invention discloses an automatic starting controller, a power plant automatic starting control system and a control method thereof. The automatic starting controller comprises a unit starting condition judgment module which is used for judging whether a unit meets a starting condition to carry out automatic starting control on the unit, an auxiliary system starting module which is used for carrying out starting control on an auxiliary system which assists a host machine system to start, a starting mode judgment module which is used for selecting the unit starting mode of the automatic starting controller according to the information sent by the host machine system as feedback, a starting module which is used for calling the starting sub modules of the unit to carry out starting control according to the selected unit starting mode, and an ending module which is used for ending the control of the automatic starting controller after the unit is started successfully and a load is raised to a target load. A mode of building blocks is employed to flexibly call each host machine starting sub module, and thus the automatic and efficient starting of the whole set of unit in different working conditions is realized.

The invention discloses a large-scale unit combination optimization method for a multi-stack fuel cell power generation system, which comprises the steps of clustering fuel cell stacks according to the scene through a K-means clustering method and a Monte Carlo simulation method, and building a probability distribution model; enabling each fuel cell stack to search and follow the current optimal solution in a solution space according to the probability distribution model by applying an adaptive inertia weight algorithm, and achieving the optimal distribution of the output power of each fuel cell stack. According to the invention, the reasonable output of large-scale units of a fuel cell power generation array system is ensured, the on-off of each stack and the shifting between the stacks are controlled through the adaptive inertia weight algorithm, so that the service life of fuel cells is prolonged, the system stability is improved, the system cost is reduced, and a purpose of fuel economy is achieved.

The invention discloses a shaft seal steam supply system used for an ultra supercritical unit and provided with an electric heater. The shaft seal steam supply system comprises a shaft seal mother tube, a high-pressure cylinder rear shaft seal, an intermediate-pressure cylinder rear shaft seal, a high-pressure cylinder front shaft seal, an intermediate-pressure cylinder front shaft seal, low-pressure cylinder shaft seals, a water spraying desuperheater, an electrical heating device module and connecting pipelines. An inlet of the shaft seal mother tube is connected with an auxiliary steam station through an auxiliary steam adjusting valve. An outlet of the shaft seal mother tube is directly connected with the high-pressure cylinder rear shaft seal and the intermediate-pressure cylinder rear shaft seal. The high-pressure cylinder front shaft seal and the intermediate-pressure cylinder front shaft seal are connected with the shaft seal mother tube through the electrical heating device module. The shaft seal mother tube is connected with the low-pressure cylinder shaft seals through the water spraying desuperheater. The electrical heating device module comprises an electric heating and steam supply check valve branch, a steam leakage check valve branch and a bypass pneumatic valve branch which are connected in parallel. Differential pressure transmitters which are linked to the electrical heater and a bypass pneumatic valve correspondingly are connected to the two ends of the electrical heating device module. The electric heater is linked to cold and hot states of a steam engine. By the adoption of the shaft seal steam supply system, the situations that the thermal stress of the shaft diameter is too high, and a main shaft is locked can be avoided.

The invention discloses a virtual power plant optimization scheduling method containing storage batteries based on a unified electricity market, and belongs to the field of energy optimization research of a power distribution network. In the prior art, electric energy transaction employs a separated transaction mode of a day-ahead market and a real-time market, the transaction model breaks the previous connection between the day-ahead market and the real-time market, and the optimal electric energy transaction scheme cannot be obtained. According to the optimization scheduling method, a virtual power plant optimization scheduling model based on the unified market is built, the storage batteries can be charged in time after deep discharge, and the operation loss of the storage batteries is reduced; besides, electric energy transaction is optimized in the unified electricity market, and the benefit of the virtual power plant is increased.

The invention relates to an energy storage system internal power distribution method considering charging and discharging duration. The method comprises the following steps of S1, establishing a battery energy storage system power distribution basic optimization model; and S2, adding a dynamic constraint considering the charging and discharging duration in a scene with severe instruction fluctuation. The method has the beneficial effects that the charging and discharging state switching constraint based on the duration is added into the battery energy storage system power distribution basic optimization model, so that the cycle index of the battery is effectively reduced, and the service life of the energy storage system is prolonged; by adjusting the constraint conditions in the energy storage application scene with violent power fluctuation, the situation that the optimization model is solvable is ensured; energy storage power instructions are reasonably distributed in the multiple energy storage units, so that the operation state of the energy storage system is optimized, and the charging and discharging capacity of the energy storage system is maximized; the dynamic switching constraint based on the duration is designed, so that the single charging and discharging time of the energy storage battery is effectively prolonged, the service life loss of the energy storage systemis reduced, and the reliability of the power distribution control method is ensured.

The invention provides a system and method for starting a double-reheat stream turbine. The system comprises a boiler, a super-high-pressure cylinder, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a primary reheater, a secondary reheater, a condenser, a super-high-pressure main throttle valve, a super-high-pressure control valve, a super-high-pressure exhaust check valve, a high-pressure main throttle valve, a high-pressure control valve, a high-pressure exhaust check valve, an intermediate-pressure main throttle valve and an intermediate-pressure control valve. When the exhaust temperature of the super-high-pressure cylinder is too high, the opening degree of the high-pressure control valve and the opening degree of the intermediate-pressure control valve are reduced, and the opening degree of the super-high-pressure control valve is increased; when the exhaust temperature of the high-pressure cylinder is too high, the opening degree of the intermediate-pressure control valve is reduced, and the opening degree of the super-high-pressure control valve and the opening degree of the high-pressure control valve are increased. The intake steam flow distribution among the super-high-pressure cylinder, the high-pressure cylinder and the intermediate-pressure cylinder is adjusted by controlling the opening degree of the super-high-pressure control valve, the opening degree of the high-pressure control valve and the opening degree of the intermediate-pressure control valve so that the super-high-pressure cylinder and the high-pressure cylinder can be prevented from being overheated, and therefore the double-reheat stream turbine has the starting advantages of flexibility, rapidness and a low service life loss.

The embodiment of the invention discloses a solid-state disk storage host system log information method, device and equipment and a computer readable storage medium. The method comprises: a solid-state disk receives log writing information sent by a host through a preset interaction command interface according to a preset host system log information format; judging whether the available space of the solid-state disk system log storage area is not smaller than the log information occupied space capacity or not; and if yes, writing the log identification information into a first log management data corresponding table item of the log management array, and writing the log file content into a log storage area corresponding to the first log management data corresponding table item. The solid-state disk system log storage area is composed of a plurality of log storage areas; wherein the log management array is composed of a plurality of log management data corresponding table items, and thelog management data corresponding table items uniquely correspond to the log storage area. The method solves the problems that a traditional solid-state disk storage host system is poor in log information performance and low in efficiency.

The invention relates to a boiler with a thermal power flexibility regulating function and a regulating method thereof, in particular to the field of opposed firing boilers. The boiler is characterized in that upper burners are burners located on the first layer and the second layer from the top of the boiler; in the upper burners, the front wall and the back wall which are located on the same layer are both provided with the burners, and the burners located on the uppermost layer are set to be peak regulating burners; lower burners are burners located on the first layer from the bottom of the boiler; in the lower burners, any burners on the front wall and/or the back wall are peak regulating burners; the peak regulating burners are internal burning type burners, coal powder can be ignited in the peak regulating burners, and stable burning can be achieved; and the other burners are ordinary burners which are internal burning type burners or external burning type burners. The boiler with the thermal power flexibility regulating function has the beneficial effects that the thermal power operation flexibility and the fuel flexibility of the boiler can be improved, the deep peak regulating capacity of the boiler is remarkably improved, the rapid climbing capacity is achieved, and the boiler can be rapidly started or stopped.

The invention relates to a W-type combustion boiler with a thermal power flexibility adjusting function and an adjusting method of the boiler. The boiler is characterized in that combustors can be divided into front arch combustors and rear arch combustors according to installation positions and types; the front arch combustors comprise front arch common combustors and front arch peak regulation combustors, and the rear arch combustors comprise rear arch common combustors and rear arch peak regulation combustors; one or two front arch peak regulation combustors are arranged in the front arch combustors every two or three front arch common combustors; one or two rear arch peak regulation combustors are arranged in the rear arch combustors every two or three one or two rear arch common combustors; the rear arch peak regulation combustors correspond to the front arch common combustors, and the rear arch common combustors correspond to the front arch peak regulation combustors. The combustion boiler has the advantages that thermal power operation flexibility and fuel flexibility of the boiler can be improved, the deep peak regulation capacity of the boiler is obviously improved, the quick gradeability is achieved, and the boiler can be quickly started and stopped.

The invention discloses a BBU capacity calibration method. The BBU capacity calibration method comprises the steps of when power-on signals are received, reading EEPROM and acquiring BBU information;extracting historical calibration time information in BBU information; judging whether or not historical calibration time corresponding to the historical calibration time information reaches preset time; it yes, starting BBU capacity calibration; if not, entering a waiting mode until the historical calibration time reaches the preset time, and then starting BBU capacity calibration. By the adoption of the BBU capacity calibration method, the life loss of the BBU can be effectively reduced, and additional cost waste is avoided. The invention further discloses a BBU capacity calibration device and equipment and a computer readable storage medium. The BBU capacity calibration device and equipment and the computer readable storage medium have the above advantages.

The invention relates to power supply control technologies, and discloses a power supply control system. The system can save electric power costs and supply power for service equipment according to the flow of people around and demands. The system includes a control server and a power supply controller; the control server is used for configuring power supply control rules for the power supply controller and issues the rules to the power supply controller; the power supply controller is configured with a wireless network module, and the wireless network module is used for scanning the number ofwireless terminals within an assigned frequency range and cyclically reports the number of the wireless terminals to the power supply controller; and the power supply controller performs comparison on the number of the wireless terminals and the threshold values in the power supply control rules, and the opening or closing of the power supply output port connected to the service equipment can becontrolled according to comparison results. In addition, a power supply control method is also disclosed, and is suitable for the controlling of the power supply of the service equipment according todemands.

The invention discloses a fire-storage AGC frequency modulation control method by considering flexible load characteristics. The method is characterized in that partition control is carried out on theoperation of each frequency modulation resource, the operation constraint of a battery energy storage system and the centralized control constraint of a flexible load are designed from the perspective of source-load interaction, and the real-time condition of the system is accurately and reasonably adjusted based on frequency deviation partition; the power supply side smoothes the output of the unit by utilizing the rapid adjustment characteristic of the battery energy storage system, and restrains the charging and discharging depth by adopting a linear regression function; the load side relieves the frequency regulation pressure by utilizing the flexible scheduling characteristic of the flexible load, and depicts the constraint of the controllable output by adopting centralized control;partitioning is carried out according to different degrees of frequency deviation, and different regulation and control means are adopted in different areas to accurately respond to different states of the system. The frequency modulation performance of the system can be improved, the energy storage output condition is optimized, and the energy storage life loss is reduced.

The invention belongs to the field of battery control, and provides a multi-stack fuel cell control method, a control device, a system and a vehicle. The control method comprises the following steps that in a starting time period of a multi-stack fuel cell, the currently required power is averagely distributed to each fuel cell stack; in an operation time period after the multi-stack fuel cell is started, the aging degree of the corresponding stack at the current moment is obtained according to the magnitude of the output voltage of each fuel cell stack, and then the power variable at the next moment is allocated to each fuel cell stack according to the aging degree and the variation of the required power at the next moment, so that, the aging degrees of the multiple stacks of fuel cells tend to be consistent.

The invention relates to a corner tangential boiler with a thermal power flexibility adjusting function and an adjusting method of the corner tangential boiler, in particular to the field of the corner tangential boiler. Combustors are divided into upper part combustors, middle part combustors and lower part combustors according to the mounting position levels, and are characterized in that the upper part combustors are combustors of a first layer and a second layer by counting from top to bottom of the boiler and the combustors of any one layer or two layers are peak-regulating combustors; the lower part combustors are combustors of a first layer and a second layer by counting from bottom to top of the boiler and the combustors of any one layer or two layers are peak-regulating combustors; the peak-regulating combustors are internal combustion type combustors; pulverized coal can be ignited in the combustors and can be combusted stably; other combustors are common combustors; and the common combustors are internal combustion type combustors or external combustion type combustors. The invention has the beneficial effects that thermal power operation flexibility and fuel flexibility of the boiler can be improved; the deep peak-regulating ability of the boiler is improved prominently; quick climbing ability is achieved; and the boiler can start/stop quickly.

The invention discloses an algorithm for reducing the write-in amplification rate and improving the random write-in performance. The method and the device are suitable for a storage device product carrying a flash memory; the key point of the algorithm of the invention is to update L2P Tablets in batches; the method comprises the following steps: a write-in data volume is determined; the algorithmis defined as a data block (Data Block), before the Data Block is not fully written, after data are written in, the L2P Table on the RAM Buffer does not need to be immediately updated, batch updatingis carried out after the Data Block is fully written in, and in the batch updating process, code variables are used as a bit table to carry out grouping on updated and unupdated entity addresses, sothat the number of times of code cyclic operation is reduced. According to the algorithm provided by the invention, the code cycle operation frequency and the FLASH write-in frequency are reduced, therandom write-in speed is greatly improved, and the write-in amplification rate is reduced, so that the FLASH life loss is reduced.

The invention provides an automatic induction film starting-closing circuit of background light of a film observing machine. The automatic induction film starting-closing circuit is used for the film observing machine for observing an industrial flaw detection photographing negative film. The automatic induction film starting-closing circuit is formed by a power supply circuit A, a sensor circuit B and a central processing unit circuit C with a resetting circuit, wherein an SDAO (Spark Discharging Anode Oxidization) end and an SCLO end of a communication bus of the sensor circuit B are connected; an SDAO end and an SCLO end of a central processing unit (66) of the central processing unit circuit C with the resetting circuit are connected; and a power supply output end (48) of the power supply circuit A is connected with an input end (4) pin of the central processing unit circuit C. According to the film observing machine disclosed by the invention, on the basis of keeping the technical performance and the technical index of the previous film observing machine, once a user moves the negative film from an observing screen, the background light can be closed along with the movement of the negative film, so that an energy source can be effectively saved, the service life loss of a component is reduced and eyes of the user are not stimulated; and therefore, the automatic induction film starting-closing circuit can meet urgent requirements and has a wide technology application value.

The invention discloses a steam supplying system for dynamic performance testing of a turbogenerator unit. The steam supplying system comprises a boiler and further comprises a main steam valve, the turbogenerator set, a double-pressure condenser and a pump unit; the boiler is sequentially and circularly connected with the main steam valve, the turbogenerator set, a steam inlet in the low-pressureside of the double-pressure condenser and the pump unit, and thus a closed-loop working loop is constituted; a branch circuit is connected to a pipeline between the boiler and the main steam valve and sequentially provided with a pressure reducing valve, a restriction orifice and a desuperheater; the tail end of the branch circuit is connected with a steam inlet in the high-pressure side of the double-pressure condenser; and an outlet in the high-pressure side of the double-pressure condenser is connected with the pump unit. During dynamic performance testing of the turbogenerator unit, the pressure reducing valve is automatically opened or the opening degree of the pressure reducing valve is automatically reduced according to the deviation of steam pressure in front of the main steam valve and the set value and the change rate of the steam pressure, and thus the steam pressure in front of the main steam valve is maintained in the requirement range.

The invention relates to a control method of an energy management system for large-scale VRB optimized operation, which is characterized by comprising the steps of establishing a large-scale energy storage efficiency mathematical model; determining the total efficiency of the energy management system according to the large-scale energy storage efficiency mathematical model and a power-efficiency fitting relation of an energy storage unit module; and solving the number of energy storage units and the power of the energy storage unit module at each sampling moment, and the like. According to theinvention, the power-efficiency relation is fitted based on the charge-discharge simulation data of different stored energy powers, and the optimized operation mode of the number of energy storage participating charge-discharge modules is reasonably selected according to a specific energy storage charge-discharge power command by combining the structure of the large-scale VRB energy storage system. The analysis of examples shows that the control strategy can effectively improve the charge-discharge efficiency of the energy storage system, is conducive to the balance of the state of charge ofthe stored energy, avoids the situation that the same energy storage unit is over-charged or over-discharged and reduces the service life loss of the energy storage system. The control method has theadvantages of scientific and reasonable method, strong applicability, good effect and the like.