57results about How to "Reduce frequent start and stop" patented technology

The invention relates to an economic dispatching technology of a power system, in particular to a multi-source optimal dispatching method considering coordination of wind power, nuclear power and pumped storage. The method includes a step 1 of taking into account the cost of abandoning wind and the cost of peaking of nuclear power, and constructing a coordinated optimization model of wind core with multiple power sources; a step 2 of Linearizing the nuclear power peak shaving constraint by subdividing the nuclear power peak shaving depth, solve the scheduling model based on Cplex, and making the scheduling plan. By taking into account the cost of wind power and nuclear power peak load regulation, wind power and nuclear power are included in the coordinated dispatching, which can greatly alleviate the pressure of peak load regulation, reduce the frequent start-up and shutdown of conventional generating units, and improve the operation economy of the power system with wind power and nuclear power in the coastal area. By subdividing nuclear power peak shaving depth linearization nuclear power peak shaving constraint method, nuclear power peak shaving operation constraint linearizationis realized, so that the scheduling model can be solved efficiently based on commercial optimization solver Cplex, and an accurate optimal scheduling scheme can be obtained, which is helpful to reduce the system operation cost.

The invention discloses a real-time refrigerating capacity calculation method of an electric vehicle power battery liquid cooling system and control thereof. The refrigerating capacity required by a battery refrigerating system at the current t moment is calculated through formulas (1) and (2), then the rotating speed of a compressor is adjusted according to the corresponding relation between therotating speed of the compressor and the refrigerating capacity, and the refrigerating capacity required by a battery at the current t moment is achieved. According to the refrigerating capacity method of the liquid cooling system provided in the invention, the factors such as the temperature of the battery, the heating power, the SOC of the battery and recession are actually considered, the obtained refrigerating capacity has better adaptability compared with a traditional method, and the temperature control capacity of the liquid cooling system can be remarkably enhanced. According to the refrigeration control system, the refrigerating capacity can be automatically adjusted according to the dynamic change of the thermal load of the battery in the running process of the electric vehicle,so that the liquid cooling system runs at the minimum power under the condition of meeting the heat dissipation requirement of the battery, the energy consumption of the liquid cooling system is remarkably reduced, and the endurance mileage of the electric vehicle is increased.

The invention relates to a cross-season and short-term heat storage combined solar heating system and a control method thereof, and relates to the field of solar heat utilization and heat storage. Thedevice comprises a solar heat collector, a short-term heat storage water tank, a cross-season heat storage water tank, a water source heat pump, a plate heat exchanger, a radiation heat dissipation device, a valve, a water pump and a control system. The short-term heat storage pool can provide a stable heat source for a cross-season heat storage pool, and the loss of frequent starting and stopping of the heat storage circulating water pump in the prior art is reduced; when the water temperature in the heating middle-and-later-period cross-season heat accumulation water tank is low, and heat is radiated from the short-term heat storage pool to the tail end radiation heat dissipation device. The solar heating system can adapt to the water temperature conditions of different heat storage tanks and perform various working modes, the control method of the solar heating system cooperates with different heat taking forms, and heat supply of the heat supply system cooperates with heat requirement of users. According to the solar heating system, the operation can be automatically controlled, the heat supply requirements of the users can be met, the solar heat supply guarantee rate and thesolar energy utilization rate are improved, and the energy consumption of the auxiliary heat source is reduced.

The invention provides a power distribution method and a power distribution system. The method is based on distribution and use of output power of each energy source Si when more than two energy sources Si are connected in parallel, and each energy source Si comprises an electric energy generation module Ti and an energy storage module Bi. The method comprises the following steps: acquiring a loadpower demand P<load>; obtaining state information of each energy source Si in N energy sources Si, wherein the state information comprises operation state information of the electric energy generation module Ti in the energy sources Si and electric quantity state information of the energy storage module Bi; and determining the output power P<Si> of each energy source Si in the N energy sources Sibased on the load power demand P<load> and the state information of the energy sources Si, wherein N is the number of the energy sources Si, N is larger than or equal to 2, i represents the ith energy source Si in the N energy sources Si, and i = 1, 2,..., N. According to the invention, frequent start and stop of the electric energy generation modules can be reduced to prolong the service life ofthe electric energy generation modules and reduce the energy loss of frequent start and stop of the electric energy generation modules.

The invention relates to a hybrid power system based on a vehicle-mounted navigation. The hybrid power system based on the vehicle-mounted navigation comprises a fuel cell sub-system (1), a power cell sub-system (2), a whole vehicle controller (3), an energy management controller (4) and a vehicle-mounted navigation (5), wherein the fuel cell sub-system (1) and the power cell sub-system (2) are connected with a whole vehicle load (6) correspondingly, the energy management controller (4) is connected with the fuel cell sub-system (1), the power cell sub-system (2), the whole vehicle controller (3) and the vehicle-mounted navigation (5) correspondingly. Compared with the prior art, according to the hybrid power system and method based on the vehicle-mounted navigation, follow-up energy consumption can be estimated according to routing and vehicle speed information sent by the vehicle-mounted navigation, energy management can be conducted accurately on fuel cell hybrid cars, therefore the starting and stopping times of the fuel cell cars is decreased, and serve life of fuel cells is prolonged.

Disclosed are a three-door multi-temperature-zone refrigeration system with the rapid-freezing function and a refrigerator with the same and a control method thereof. The three-door multi-temperature-zone refrigeration system comprises a compressor, a condenser and a drier and filter; the condenser and the drier and filter are connected with an outlet of the compressor in turn; an outlet of the drier and filer is divided into two branches, wherein one branch is connected with a cut-off electromagnetic valve, a refrigeration capillary tube and a refrigeration evaporator in turn and the other branch is connected with an inlet of a bi-stable electromagnetic valve; one outlet of the bi-stable electromagnetic valve is connected with a rapid-freezing capillary tube and a rapid-freezing evaporator in turn and the other outlet of the bi-stable electromagnetic valve is connected with a wide temperate zone capillary tube and a wide temperate zone evaporator in turn; the rapid-freezing evaporator and the wide temperate zone evaporator are connected with a freezing evaporator after being in parallel connection with each other; the refrigeration evaporator and the freezing evaporator are connected with the compressor after being in parallel connection with each other. The invention also discloses the refrigerator with the three-door multi-temperature-zone refrigeration system and the control method thereof. The refrigerator is a multi-temperature-zone refrigerator with the rapid-freezing function and accordingly the relative independence of chambers is implemented, the requirements of the different chambers for the refrigerating capacity can be met, and the problems that the irreversible loss of the refrigeration chamber is large and the start-stop of the compressor is frequent, and the like are solved.

The invention discloses a wind induction intelligent constant-temperature ecological curtain wall system and a temperature control method and belongs to the field of curtain walls. The system and method solve the problem of high energy consumption of an air-conditioning system. Through combination of a computer system and a constant-temperature curtain wall, multiple work modes are realized, intelligent selection and switch of work modes are achieved according to the temperature in a room, the temperature of a hollow interlayer, the temperature outside the room and the air speed outside the room, so that intelligent temperature control is achieved, energy consumption of the air-conditioning system is reduced during heating and cooling, and energy saving effect and environment adaptability are good.

The invention discloses a water chiller unit and a water chiller unit controlling method and device. The water chiller unit controlling method comprises the steps of obtaining a set targetwater temperature and an actual water temperature of the water chiller unit, obtaining a rate of change of the water temperature, obtaining a first difference value between the actual water temperature and the targetwater temperature; predicting a required first cost duration for the actual water temperature to fall to the targetwater temperature according to the first difference valueand the rate of change of the water temperature, and adjusting the load of the water chiller unit according to the first cost duration. Therefore, according to synthetic judgement of a deviation between thecurrent actual water temperature and the targetwater temperature and the rate ofchange of the water temperature, the load of the water chiller unit is adjusted, the condition that a compressor starts and stops frequently is effectively reduced, the stability of the water temperature is improved, and use experience of users isimproved.

The invention provides an operation control method and device, an air conditioning water machine system and a storage medium. The air conditioning water machine system is provided with a host water pump and a plurality of parallel water machine units. The operation control method comprises the steps of determining the indoor capacity demand value according to the set water temperature of the specified location, the actual water temperature of the specified location and the operation flow rate of the host water pump; determining the total capacity output value of any one jointly-operating watermachine unit according to the ambient temperature and actual water temperature of any one water machine unit; calculating the capacity demand difference value between the total capacity output valueof any set of one jointly-operating water machine unit and the indoor capacity demand value; and determining which jointly-operating water machine unit is to be started for operation according to thecapacity demand difference value. With the technical scheme of the present invention, the system operation reliability is further increased, more energy is saved, while comfort is also improved, the frequent start-stop phenomenon of the water machine units is reduced, and prolonging of the compressor life and retarding of the impact damage to the circuit are facilitated.

The invention relates to an air quality-inducing intelligent constant temperature ecological curtain wall system and a temperature control method, belongs to the field of curtain walls and solves the problem that an air conditioning system is high in energy consumption. The system is combined with a constant temperature curtain wall by virtue of a computer system, so that the system has multiple working modes; the working modes are intelligently selected and switched according to the indoor and outdoor temperatures, the temperature of a hollow interlayer and an outdoor air quality, and intelligent temperature control is realized, so that the energy consumption of the air conditioning system in heating and refrigerating processes is reduced, and the system has a good energy-saving effect and an ability of coping with environmental changes.

A large-power multi-channel liquid cooling source cabinet includes five sets of refrigeration units, two sets of water cooling units and an electrical control unit, the refrigeration units, the watercooling unis, and the electrical control unit are integrated in a customized cabinet, in which three refrigeration units and one water cooling unit constitute a liquid supply system, the other two refrigeration units and one water cooling unit constitute another liquid supply system, the two liquid supply systems are electrically connected with the electric control unit, the two liquid supply systems ensure that the liquid cooling source can output refrigerant water with high and low temperature simultaneously, the liquid cooling sources ensure that the liquid cooling source can meet the demand of high-power refrigeration capacity, and the coolant can meet the use demand of multi-way refrigeration equipment after flow distribution. The invention can precisely control the flow rate and thecoolant temperature, the liquid cooling source improves the device integration, the cabinet can meet the refrigerating capacity requirements of most electronic equipments, and the constant temperaturecontrol mode effectively reduces the working energy consumption of the liquid cooling source.

The invention discloses an integrated rain induction intelligent constant-temperature ecological curtain wall system and a temperature control method and belongs to the field of curtain walls. The problem that an air conditioning system is high in energy consumption is solved. According to the integrated rain induction intelligent constant-temperature ecological curtain wall system and the temperature control method, a constant-temperature curtain wall is combined with a computer system so as to have a plurality of working modes, the working modes are intelligently selected and switched according to an indoor hollow interlayer, the outdoor temperature and the outdoor rainfall, and intelligent temperature control is achieved; and thus, energy consumption of an air conditioning system in heating and refrigerating processes is reduced, and a good energy-saving effect and good environmental change response capacity are achieved.

The invention discloses direct-connected non-negative pressure water supply equipment. The equipment comprises an inlet sluice valve, an inlet butterfly valve, an anti-backflow apparatus, an inlet pressure transmitter, a diaphragm three-way exhaust valve and other components, wherein the inlet pressure transmitter is connected between the inlet sluice valve and the inlet butterfly valve; a filter is connected between the inlet butterfly valve and the anti-backflow apparatus; a flow metering device is connected between the anti-backflow apparatus and a soft joint; a control valve is connected between the soft joint and a flow stabilizing tank; the diaphragm three-way exhaust valve and a sluice valve are connected with the flow stabilizing tank; a water intake pressure transmitter is connected between the sluice valve and a first butterfly valve; the first butterfly valve, a water pump, a check valve, a flexible joint and a second butterfly valve are connected in sequence; an air pressure tank is connected with the second butterfly valve; and an outlet sluice valve and an outlet butterfly valve are connected with the second butterfly valve. The equipment also comprises a pressure stabilizing pump which is connected with the air pressure tank. The equipment has the positive effects of reducing the starting frequency of the water pump and more effectively saving the energy.

The invention provides a refrigeration container and a control method thereof. The refrigeration container comprises a refrigeration system. The refrigeration system comprises a refrigeration branch and a cold storage branch which are connected with the two outlet ends of a bi-stable electromagnetic valve. The refrigeration branch and the cold storage branch are connected in parallel. Cold can be stored for a cold storage device through the cold storage branch by means of a gap, where refrigeration is not needed, of a refrigeration chamber, and a compressor halts on the premise that the temperature TR of the refrigeration chamber is lower than the set lower limit temperature TRD of the refrigeration chamber and the temperature TX of the cold storage device is also lower than the set lower limit temperature TXD of the cold storage device; then, the refrigerating capacity stored by the cold storage device supplies cold to the refrigeration chamber. The starting and stopping frequency of the compressor is decreased, and the service life of the compressor is prolonged; when people have a rest, the refrigeration chamber is refrigerated by means of the refrigerating capacity stored by the cold storage device, noise generated when a refrigeration system of a refrigerator works is eliminated, and the living quality of a user is improved.

The invention discloses a heat supply control device, a heat supply control device, a heat supply control system and a heat supply device, and relates to the field of heat supply control. The heat supply control method comprises the steps that when the temperature of fluid flowing out of the heat supply device is higher than the shutdown temperature of the heat supply device, the heat supply device is shut down; the highest temperature Tk capable of being provided for a fluid box before shutdown of the heat supply device is compared with the preset shutdown temperature T of the fluid box, and the smaller temperature value is set as the shutdown temperature of the fluid box; and the heat supply device is started up according to the set shutdown temperature of the fluid box. By means of the heat supply control device, the heat supply control device, the heat supply control system and the heat supply device, frequent startup and shutdown of the heat supply device can be reduced, and the service life of the heat supply device can be prolonged.

The invention discloses a thermal power plant energy storage configuration system based on a power distribution network scene. The thermal power plant energy storage configuration system comprises a power grid, a main transformer, a high-voltage plant transformer, a thermal power plant generator set, energy storage equipment, a measurement and control device, a telecontrol device, a set DCS systemand an energy storage control system and a strategy. The thermal power plant energy storage configuration strategy based on a power distribution network scene comprises the following steps: 1) collecting power distribution network data, and establishing a load prediction power curve; 2) performing load flow calculation to obtain power and voltage of an access node of the thermal power plant; 3) establishing a thermal power plant energy storage configuration optimization model; 4) solving to obtain the optimal node and the energy storage capacity of the energy storage system installation, and5) evaluating the solving result. According to the method, the position and the capacity of the energy storage system are effectively and reasonably configured in the thermal power plant, frequent starting and stopping of a thermal power generating unit are reduced, the power peak-valley difference of the system is effectively stabilized, and system operation is more economical.

The invention provides a water cooling unit and a control method thereof. The water cooling unit comprises a condenser, a compressor and an evaporator, and a by-pass pipeline is arranged between an outlet of the compressor and an inlet of the evaporator and used for making exhaust gas of the compressor enter the evaporator in a bypassing mode. According to the water cooling unit and the control method thereof, by arranging the bypass pipeline, the capability of the unit can be further reduced to meet the demand of a customer for a lower load, frequent start and stop of the compressor are reduced, and the reliability of the compressor, the adaptability of the unit and the user experience degree are improved; by arranging a bypass valve on the upper portion of the condenser, the impact generated by the exhaust gas of the compressor on the interior of the evaporator can be reduced, and by comparing an actual capacity value of the compressor with a target capacity value of the compressor, the compressor and the bypass pipeline are adjusted, so that it can be ensured that after the bypass pipeline is opened, the compressor can run stably, and the fast stability of the whole system is improved.

The invention discloses an air conditioner control system, which is characterized in that a control module adjusts the protection temperature of an evaporator according to the indoor temperature. Specifically, in a refrigeration mode of an air conditioner, the control module adjusts the stop temperature of the air conditioner to decrease along with the increase of the indoor temperature, while thecontrol module adjusts the start temperature of the air conditioner to increase along with the increase of the indoor temperature. In the heating mode of the air conditioner, the control module adjusts the stop temperature of the air conditioner to rise along with rising of indoor temperature, and the control module adjusts the start temperature of the air conditioner to decrease along with rising of the indoor temperature. Therefore, the protection temperature of the evaporator changes along with the indoor temperature. The evaporator of the air conditioner is protected more actively.

The invention discloses a unit starting control method and device adapting to variable flow. The method comprises the following steps that in a standby state of a unit, running parameters of a water system of the unit is monitored; whether the water system is in an over small load state or not is judged according to the running parameters; whether the water system is in a load increase state or not is judged according to the running parameters; if the water system is in the over small load state, the unit is triggered to continue keeping the standby state; and if the water system is in the load increase state, the unit is triggered to enter a ready-to-start state. According to the method, an unit starting control logic adapting to the variable-flow water system is provided, the multi-dimensional running parameters are extracted, and thus the starting time of the unit is controlled in advance; and therefore, frequent starting and stopping of the unit can be reduced, the fault rate of the unit can be reduced, unnecessary unit starting is reduced, energy consumption of the system is reduced, and the temperature stability of the water system is improved.

The invention discloses an anti-swing whole-course speed planning control and positioning system and method for an unmanned crown block, and belongs to the technical field of intelligent control of a metallurgical reservoir area. In the automatic operation process of the unmanned crown block, under the condition that a plurality of avoiding points exist in the path information issued by the warehouse management system, path prediction and planning are carried out in advance, under the condition of anti-swing control, the whole-course speed control and accurate positioning of the crown block are realized, and the process of turning back operation of the crown block mechanism does not exist in the path operation process, so that the operation efficiency of the unmanned crown block is improved. And automatic crown block control which does not stop in the whole process and maximizes the overall operation efficiency of the crown block is achieved.

The invention discloses a hydrogen production and storage system, which comprises an electrolytic bath and a hydrogen storage device, and further comprises a heat storage power generation device, an oxygen storage device and a water storage device. The invention further discloses a multi-mode circulating hydrogen production method, which adopts the hydrogen production and storage system. According to the invention, a heat storage power generation device is introduced into a hydrogen production system and cooperates with renewable energy power generation to electrolyze water to produce hydrogen in an electrolytic cell, so that the problems of variable working conditions and frequent start and stop caused by the use of renewable energy in the hydrogen production process are avoided, and the adaptability of the PEM electrolytic hydrogen production system to the fluctuation characteristic of new energy is improved; according to the multi-mode circulating hydrogen production method provided by the invention, a method of coupling organic Rankine cycle power generation with renewable energy power generation is adopted, so that the power shortage of the input end caused by fluctuating renewable energy is filled up, and the productivity of a hydrogen production system is ensured; and the method and the system provided by the invention are simple and easy to implement, energy generated in the whole hydrogen production and storage system can be fully utilized, the economical efficiency of the whole system is improved, and the energy consumption is reduced.

The invention discloses an air induction intelligent constant-temperature ecological lighting ceiling and a temperature control method and belongs to the field of lighting ceilings. The problem of high energy consumption of an air conditioner system is solved. A computer system is combined with the lighting ceiling, so that various working modes are achieved. In addition, the working modes are selected and switched intelligently according to the indoor temperature, the temperature of a hollow interlayer, the outdoor temperature and the outdoor air speed, intelligent temperature control is achieved, energy consumption of the air conditioner system during heating and refrigeration is reduced, and a good energy saving effect and environmental change coping capacity are achieved.

The invention discloses a low-speed control method and device for a commercial vehicle matched with an AMT and equipment. The method comprises the steps that whether the vehicle is in a low-speed coupling control interval or not is determined; an expected engine net output torque and an available engine friction torque are calculated; according to the expected engine net output torque and the available engine friction torque, whether an actuator is enabled to be driven or not is determined, and whether the vehicle is in a driving state or not is determined; if it is determined that the actuator is enabled to be driven, when the vehicle is in the low-speed coupling control interval and the vehicle is in the driving state, low-speed compensation torque is calculated, and engine request torque is obtained according to the low-speed compensation torque, engine friction torque and expected engine net output torque; and when the vehicle is not in the low-speed coupling control interval and is in the driving state, the engine request torque is the sum of the expected engine net output torque and the engine friction torque, good control over low-speed running of the vehicle matched with the AMT is achieved, starting and stopping are reduced, and riding comfort is improved.