46results about How to "Safe and economical operation" patented technology

The invention discloses a load coordination control method for a header system boiler, relating to the load coordination control method for boilers at power station. The invention solves problem of unstable vapor pressure in a main vapor pipe of the header system operation boiler adjusted by manpower currently and realizes an automatic adjustment of pressure of the main pipe. The pressure load ofthe main pipe in the system adjusts control mode of each boiler in coordination with DCS; then according to overall load demand of the system, load given value of each boiler is adjusted by incrementand sent to the DCS of each boiler of the system; the adjustment method of the load given value of each boiler is that: when load difference of each boiler of the system is over big and the load needs increasing, the load given value of the boiler with minimum load needs increasing; when the load needs decreasing, the load given value of the boiler with maximum load needs decreasing and the givenvalue is fixed. The load coordination control method for the header system boiler has the advantages of being able to effectively control fluctuation of the pressure of the main pipe within + / -0.1MPa.

The invention relates to a configuration method and system for an electric reactor of a hydropower station. The configuration method comprises the steps of obtaining input parameters in the configuration method for the electric reactor of the hydropower station; calculating input impedance of a grid-connected point of the hydropower station according to the input parameters in the configuration method; calculating unit leading-in-phase voltage regulation cost of the hydropower station when the electric reactor is not installed according to the input parameters in the configuration method and the input impedance of the grid-connected point of the hydropower station; establishing a mathematic optimization model configured to the electric reactor of the hydropower station according to the input parameters in the configuration method and the input impedance of the grid-connected point of the hydropower station; solving the mathematic optimization model to obtain an optimized target function value and a capacity optimal solution of the electric reactor; and determining whether the unit leading-in-phase voltage regulation cost is greater than or equal to the optimized target function value or not, if so, outputting prompting information of the electric reactor with the capacity optimal solution as the installed capacity. Basis is provided for the reasonable configuration of the electric reactor of the hydropower station, thereby improving the reactive power regulation capability of the hydropower station, and realizing safe and economic operation of the power grid.

The invention discloses an ammonia water mixed work medium power cycle power generating system and a coordinative control method. A first heat source adjusting valve and a second heat source adjustingvalve are correspondingly connected with a heat source pump or industrial waste heat; geothermal water or the industrial waste heat is injected back after passing through the first heat source adjusting valve; the second heat source adjusting valve is connected with a heat source end of an evaporator; the geothermal water or the industrial waste heat is injected back after passing through the heat source end of the evaporator, and a heat source side passageway is formed; after the evaporator passes through a separator, a path of the evaporator is connected with an inlet of a mixer through a pressure measuring transmitter, an adjusting valve and a turbine, and the other path of the evaporator is connected with the inlet of the mixer through a high-temperature heat regenerator and a throttling valve; and after passing through a low-temperature heat regenerator and a condenser, an outlet of the mixer is connected with an inlet of a work medium pump, and an outlet of the work medium pumpis connected with the evaporator through the low-temperature heat regenerator and the high-temperature heat regenerator, so that a work medium side circulation passageway is formed. According to the ammonia water mixed work medium power cycle power generating system and the coordinative control method, the production cost and the running cost of the system can be lowered easily, popularizing of the ammonia water mixed work medium circulation system adopting waste heat or renewable energy facilitates energy conservation and emission reduction, and the energy utilizing rate is increased.

The invention relates to an economic optimized dispatching method for energy storage power stations. A system utilized in the economic optimized dispatching method comprises independent adjustable battery packs, a transformer, a transformer bus, and an energy storage monitoring system power dispatching center, wherein the independent adjustable battery packs are connected on the bus on the low-voltage side of the transformer, and the transformer and the energy storage monitoring system power dispatching center are sequentially communicated with a power grid dispatching system. The economic optimized dispatching method includes the steps of initializing data of a energy storage power station; confirming the number of the independent adjustable battery packs; reading operation parameters of the independent adjustable battery packs and uploading the same to the energy storage monitoring system power dispatching center; confirming the optimum economic optimized dispatching scheme to obtain the optimum economic optimized dispatching model; and outputting a power dispatching command of the battery packs of the energy storage power station. Concrete structure of the energy storage power station and technical characteristics of energy storage packs are fully taken into consideration, the lowest total cost is taken as the optimizing object, power demand of battery operation and dispatching is taken as a limiting condition, and the economic optimized dispatching method is simultaneously applicable to energy type energy storage power stations and power type energy storage power stations.

The invention relates to a cleaning agent for a household heating system consisting of various metal materials. The cleaning agent comprises the following components in percentage by weight: 3-20 percent of propylene glycol, 2.5-10 percent of a corrosion inhibitor, 0.1-5 percent of sulphamic acid, 5-25 percent of ethylene diamine tetra and the balance of demineralized water. The invention also provides a preparation method of the cleaning agent. The cleaning agent disclosed by the invention is compounded of an organic anti-scaling component and an organic acid and can effectively strip off and dissolve old scales in the household heating system equipment and prevent secondary water scales; the cleaning agent can effectively alleviate corrosion to metal materials of the household heating system equipment, effectively remove the water scales, rust slag and the like from the household heating system equipment and solve such problems of the household heating system caused by scaling as low heat transmission efficiency or water circulation blocking, so that all equipment in the whole household heating system can operate safely and economically, and the aims of reducing water pollution, saving energy and reducing consumption are fulfilled.