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1153 results about "Power parameter" patented technology

Cold source centralized digital control method based on energy consumption monitoring

The invention discloses a cold source centralized digital control method based on energy consumption monitoring. The cold source centralized digital control method based on energy consumption monitoring comprises the following steps that a, real-time monitoring is conducted on power utilization, water utilization, the cooling quantity, the temperature, the pressure and the equipment state of a cold source system of a central air conditioner; b, energy consumption data and system state data collected in the step a are summarized, real-time refrigerating efficiency of the cold source system is calculated according to operating power parameters of a water chilling unit, a chilled water pump, a cooling water pump and a cooling tower fan in the system and the refrigerating capacity of the water chilling unit, forecast energy consumption data at present are obtained through forecasting according to outdoor temperature and humidity parameters at present, indoor temperature and humidity parameters at present and a load forecast model, the forecast energy consumption data and the energy consumption data which are actually monitored are compared, problems existing in the use process of a refrigerating system are found, and an optimized operation control strategy of the cold source system is formed; c, the optimized operation control strategy formed in the step b is conducted, and optimized operation control is achieved through a direct digital controller and an electrically operated valve connected with the direct digital controller.
Owner:北京方胜有成科技股份有限公司

Method for evaluating new energy development potential of regional power grids based on power generation absorption

The invention relates to a method for evaluating the new energy development potential of regional power grids based on power generation absorption. New energy power characteristics are described from the level of new energy output power parameters, and power grid structure constraints are described from the level of power grid load flow calculation parameters. Based on a sequential production simulation method, by establishing a multi-period load flow optimization evaluation model and adopting matlab software for programming simulation calculation, a corresponding new energy receptivity evaluation model is established with the power generation of new energy units as the objective function and the new energy wind curtailment/light curtailment rate as the constraint. The new energy development degree of the regional power grids is comprehensively measured, visual development potential measurement indexes are obtained finally, and the new energy receptivity trend of the regional power grids is analyzed in a drawing mode. The power generation of the power grids by renewable energy absorption is simply and visually calculated, and reasons for the insufficient new energy receptivity of the power grids are analyzed. The economy and safety of power grid operation are analyzed based on various operation scenes, and the new energy receptivity of the power grids under various scenes is studied.
Owner:UNIV OF SHANGHAI FOR SCI & TECH

A method and system for uplink power control

InactiveCN102271389AImplement uplink power controlUplink power control is validEnergy efficient ICTPower managementElectric power transmissionTransmitted power
The invention discloses an uplink power control method and an uplink power control system. The method comprises that: a base station configures a target received power parameter and a path loss compensation factor parameter corresponding to a reference service rate, regulates a power transmission enabling parameter (deltaMCS) according to the grade of a modulation and coding scheme (MCS) and transmits the deltaMCS to a terminal; and the base station subtracts target received power and path loss compensation from a transmitted power limit of the terminal to obtain power allowance, determines an available MCS grade of the terminal according to the power allowance and transmits the determined available MCS grade to the terminal. In the method and the system, the base station is supported to adaptively select an MCS grade suitable for user equipment (UE), and effective control over the uplink transmitted power of the UE is realized.
Owner:ZTE CORP

Power distribution network topology layout method

The invention provides a power distribution network topology layout method. The method comprises the step of obtaining geographical position data of nodes of an electric power system, the topology information of connection of the nodes and line hardware parameter information among the nodes and selecting the node closest to a power transmission network as an original female node, the step of obtaining the on-off state, power parameters, interphase faults and grounding faults of spot switches of the nodes of the power transmission network and the voltage and current parameter information of the spot switches when the faults happen, the step of extracting the topology relation among the nodes through a first-level breadth-first search method, the step of determining the types of devices of the nodes through a second-level breadth-first search method, the step of traversing, searching for and determining the types of the devices of the nodes through the breadth-first search methods to carry out layout numbering, and the step of determining the distance between every two adjacent nodes on a topology graph and the transverse distance and the longitudinal distance of the nodes relative to the female node and carrying out the topology layout and display. The repeated nodes in the current power transmission network topology graph are removed through a longitudinal symmetrical layout method and a longitudinal draw type wiring method, and the power transmission network topology layout is carried out.
Owner:STATE GRID CORP OF CHINA +2

Solar photovoltaic system and fault detection method thereof

ActiveCN102158129ARepair as soon as possibleReduce the impact of normal power generationPhotovoltaic monitoringPV power plantsSystems analysisPower parameter
The invention provides a solar photovoltaic system, which comprises a plurality of alternating current photovoltaic components, a data processing module and a system analysis module, wherein the plurality of alternating current photovoltaic components are mutually connected in series for constituting an alternating current photovoltaic component string to generate alternating current according tosolar energy; the data processing module is connected with the alternating current photovoltaic component string and used for acquiring power parameters of all the alternating current photovoltaic components through power line communication technology and detecting and identifying abnormality or a fault in the solar photovoltaic system; and the system analysis module is connected with the data processing module and used for collecting system data from the data processing module and storing, analizing, drawing or displaying the system data. The invention further provides a fault detection method of the solar photovoltaic system. Through the way of monitoring real-time data transmission between all the alternating current photovoltaic components and the data processing module, when the fault occurs in the photovoltaic system, the generation of the fault can be timely detected, and the position and the type of the fault can be further identified, thereby enabling maintenance staff to repair the fault as soon as possible and reducing the impacts on normal power generation.
Owner:ALTENERGY POWER SYST

Real-time monitoring system for preventing electricity theft for power network

The disclosed real-time method to prevent electric larceny comprises: monitoring the transformer substation pass, 10KV distribution lines, special user and public power parameter by a high-voltage electric energy collection terminal; monitoring original parameters by a low-voltage electric energy collection terminal; using a wireless digital communication network to send data to the monitor center to store in database for classification and analysis, then auto drawing load curve and charge curve for different monitor point. This invention has well monitor effect and can alarm by SMS.
Owner:湖南泰通能源管理股份有限公司
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