40results about How to "Increase Internet power" patented technology

The invention discloses a peak regulation power generation system and method coupled with compressed air energy storage. With the development and utilization of large-scale renewable energy sources, the peak-valley difference of a power grid is increasingly increased, and the bearing capacity is also limited. According to the technical scheme, when the power grid is in a power consumption valley period, air is compressed through power generated by a coal-fired unit and then stored in a storage space, and on the premise that it is guaranteed that the actual generation power of the coal-fired unit is higher than the minimum guaranteed generation power, the on-grid power of the coal-fired unit is effectively reduced; and when the power grid is in a power consumption peak period, the compressed air in the storage space is fed into a gas turbine for power generation, so that the power consumption of a main compressor is reduced, the on-grid power of the gas turbine is improved, and the natural gas consumption is reduced. According to the peak regulation power generation system and method coupled with compressed air energy storage, support can be provided for peak load shifting of the power grid, so that the renewable energy consumption capability is improved, and the usage amount of high-grade energy such as natural gas can be reduced on the premise that the on-grid power of the system meets the power grid adjustment requirement.

The present invention discloses a control method of an energy storage system for a wind turbine generation set and a communication management system which are used to ensure the safe operation of theenergy storage system in a normal condition or an extreme weather. The method comprises the steps that: an energy storage coordination controller obtains related information of a wind power plant andreal-time information of a wind turbine generation set; and the energy storage coordination controller issues a control command to the energy storage system according to the obtained information to control the energy storage system to be operated in a normal operation mode or a typhoon operation mode. The method controls the energy storage system to be switched between the two operation modes according to the information of the wind power plant and the wind turbine generation set to ensure the safe starting and operation of the energy storage system in the extreme condition. During the loss ofthe external power grid electric power support, the control method of an energy storage system for a wind turbine generation set and a communication management system supports normal operation of a power utilization system itself to effectively improve the safety of the wind turbine generation set. In the normal operation state of the wind turbine generation set, the charge-discharge energy storage system is controlled to achieve fan grid-connected power regulation and improve the unit online electric quantity.

The invention provides a system for generating hydrogen through a high-temperature solid electrolytic tank by means of thermal power plant peak load regulation electricity. The system for generating the hydrogen through the high-temperature solid electrolytic tank by means of the thermal power plant peak load regulation electricity comprises a power grid peak load regulation control system, a power transmission and distribution and electrolytic tank power supply system, a high-temperature solid electrolytic tank hydrogen generating system, an electrolytic tank high-temperature steam supplying system and a hydrogen collecting, purifying and outward transmission system. The power transmission and distribution and electrolytic tank power supply system is a newly added interval on an outgoing bus of a power plant. An electric switch is arranged on the interval. The electric switch is connected with a step-down transformer and an inverter on a power transmission network. The other end of the step-down transformer and the other end of the inverter are connected with the high-temperature solid electrolytic tank hydrogen generating system. In the electrolytic tank high-temperature steam supplying system, a power plant main steam bypass guides out high-temperature steam, and the high-temperature steam is supplied to the electrolytic tank. By the adoption of the system for generating the hydrogen through the high-temperature solid electrolytic tank by means of the thermal power plant peak load regulation electricity, electrolysis hydrogen generation is conducted through the thermal power plant peak load regulation electricity, the main steam of the power plant is guided out, electrically overheated and then conveyed into the electrolytic tank, the hydrogen generation efficiency of the solid electrolytic tank is improved, the peak load regulation electricity of the power plant is greatly utilized, and a valuable peak load regulation load is provided for the power plant.

The invention discloses an IGCC power station peak regulating device achieving energy storage through an air separation system and a method. The device comprises a gasification furnace, a synthesis gas purification unit, a gas turbine power generation system, a waste heat boiler system and a steam turbine power generation system; oxygen needed by the gasification furnace is supplied by the air separation system; the air separation system comprises an air cooling and compressing system which supplies cooling air to a rectifying tower and can achieve variable frequency regulation, air in the rectifying tower is separated into nitrogen and oxygen, nitrogen and oxygen are stored in a liquid nitrogen storage tank and a liquid oxygen storage tank respectively, the liquid oxygen storage tank is connected with an oxygen heater through a liquid oxygen pump and a cold box, and high-pressure oxygen coming out from the oxygen heater is delivered to the gasification furnace. According to the device and method, the defects that an IGCC power generation system is low in load varying speed and poor in power grid peak regulating capacity are overcome, the capability of quickly regulating the IGCC output power is achieved through the storage capacity of the air separation system, and the whole-plant output power can be increased and decreased by within 20% most quickly in a short time.

The invention discloses a wind power prediction method based on a self-learning composite data source autoregression model. The wind power prediction method based on the self-learning composite data source autoregression model comprises the steps that data are input to enable parameters of the autoregression model to be obtained; input data required by wind power prediction are input into the autoregression model determined according to the parameters of the autoregression model, so that a prediction result is obtained; post-evaluation is conducted on the prediction result, namely the error between a predicted value and a measured value is analyzed, and order determination of the autoregression model AR(p) and estimation of the parameters of the model AR(p) are conducted again if a predicted error is larger than an allowable maximum error. Key information is provided for new energy power generation real-time scheduling, a new energy power generation day-ahead plan, a new energy power generation monthly plan, new energy power generation capability evaluation and wind curtailment power estimation by predicting the wind power generated during wind power generation. The ultra-short-term wind power prediction accuracy is effectively improved due to the fact a composite data source is introduced, and thus the on-grid energy of new energy resources is effectively increased on the premise that safe, stable and economical operation of a power grid is guaranteed.

The invention discloses a unit steam extraction heat supply energy gradient utilization method. Based on a heating heat network, the heating heat network comprises a backpressure power generator unitand a circulation water pump turbine. Unit steam extraction is at least divided into two paths, and the amount of each path of unit steam extraction is output according to the step level. According toheat energy carried by each path of unit steam extraction, the backpressure power generator unit is utilized for converting energy into electric energy, and the electric energy is input into the heating heat network to be used for input into a power grid. The kinetic energy carried by each path of unit steam extraction does work through the circulation water pump turbine, and the kinetic energy is converted into heat energy. After the method is adopted, all kinetic energy and heat energy of the unit steam extraction can be recycled, the on-grid energy of a power plant can be increased throughthe recycled electric energy, the steps are simple, implementation is easy, and cost is low.

The invention discloses a voltage control method of a 330kV wind farm collection substation. The voltage control method of the 330kV wind farm collection substation comprises the following steps: a wind farm collection station is controlled to make a voltage out-of-limit judgment, a control strategy is started when voltage is out of limit, and the control is immediately ended when a set range is satisfied; a capacitive reactor is regulated and controlled; transformer taps are regulated; a subordinate actuating station conducts longitudinal regulation to complete the control. On the premise that a power grid is guaranteed to run safely and economically, the capacity of accepting and delivering new energy of the power grid is realized, the wind curtailment is reduced, and the goal of improving the on-grid energy of the new energy is achieved.

The invention discloses a composite tower damper device, which is installed in a fan tower, and the device comprises: a damping unit arranged on a platform where the damping unit is arranged; and several flat piezoelectric power generation devices are arranged on the outer wall of the damping unit , and the flat-plate piezoelectric power generation device is fixedly connected to the wall of the tower; the damping unit includes several liquid dampers; the liquid damper is equipped with damping liquid, and the liquid damper is equipped with a cantilever piezoelectric power generation device, the damping unit also includes a rectifier stabilizer, a storage battery, and a wire, and the wire electrically connects the storage battery, the rectifier stabilizer, the cantilever piezoelectric generator, and the flat piezoelectric generator. The present invention utilizes the flat piezoelectric generator and the cantilever piezoelectric generator to convert the vibration energy of the fan tower into electric energy and store it in the storage battery, further enhances the resistance effect of the damper, and uses the vibration energy of the tower to generate electricity.

The invention discloses a control method and a communication management system for an energy storage system of a wind turbine, which are used to ensure the safe operation of the energy storage system under normal conditions or extreme weather. The method includes: the energy storage coordinating controller obtains the relevant information of the wind farm and the real-time information of the wind turbines; the energy storage coordinating controller issues control instructions to the energy storage system according to the acquired information, and controls the energy storage system to operate in a normal operation mode or a typhoon run mode. The method of the present invention can control the energy storage system to switch between the two operation modes according to the obtained information of the wind farm and the wind turbine, so as to ensure the safe start-up and operation of the energy storage system under extreme conditions, and support its own use during the period of losing the power support of the external grid The normal operation of the power system can effectively improve the safety of wind turbines. At the same time, in the normal operation state of the wind turbine, through the charge and discharge control of the energy storage system, the grid-connected power adjustment of the wind turbine can be realized, and the grid-connected power of the wind turbine can be increased.

The invention discloses a wind power ultra-short-term prediction method based on a self-learning composite data source, which includes inputting data to obtain autoregressive sliding average model parameters; The predicted results are obtained from the autoregressive moving average model, and post-evaluation is performed on the predicted results, that is, the error between the predicted value and the measured value is analyzed. If the predicted error is greater than the maximum allowable error, the model order and model parameters are estimated again. Through the prediction of wind power in the process of wind power generation, key information is provided for real-time scheduling of new energy power generation, day-ahead planning of new energy power generation, monthly plan of new energy power generation, evaluation of new energy power generation capacity and estimation of abandoned wind power. Through the introduction of composite data sources, the ultra-short-term prediction accuracy of wind power can be effectively improved, so as to achieve the purpose of effectively increasing the electricity consumption of new energy on the premise of ensuring the safe, stable and economical operation of the power grid.