30results about How to "Convenient command and dispatch" patented technology

The present invention provides an online prediction method for power grid frequency situation considering wind power-DC auxiliary frequency modulation, which considers the role played by thermal power units, wind power units, DC transmission systems and pumped storage power stations in system frequency adjustment, and collects power grid operation online Based on state data and unit equipment information, an aggregation model for thermal power units, wind turbines, DC transmission systems and pumped storage power stations participating in frequency adjustment is established. The aggregation model characterizes the frequency modulation process of thermal power units, wind turbines, DC transmission systems and pumped storage power plants in the form of transfer functions. Compared with existing methods, this method can take into account the role played by wind turbines and DC transmission systems in frequency regulation, and predict the dynamic process of system frequency changes more quickly, thereby improving the perception and accuracy of power grid frequency situation prediction , which has important guiding significance for power grid dispatching.

The invention discloses a multi-target anti-collision early warning method based on AIS information, comprising the following steps: Step 1: Establishing a PAD model for predicting dangerous areas adapting to multi-target conditions, Step 2: setting the DCPAs and TCPAs of the own ship; Step 3: according to Calculation of collision avoidance elements based on AIS information; Step 4: Judgment of collision avoidance warning; Step 5: Superimposing and displaying PCD on own ship’s collision avoidance situation circle CCPS. The present invention uses AIS information to calculate the relevant elements of collision avoidance, even in sea areas with high navigation density, dynamic information can be effectively obtained and then relevant elements can be calculated, and the avoidance maneuvering intention of all ships can be reflected in time; the CCPS model established by the present invention It effectively meets the requirements of clearly and concisely displaying the collision avoidance situation in the case of multiple targets. At the same time, it can not only provide collision warning information, but also provide collision avoidance decision-making under the condition of maintaining speed, thus providing convenience for the watchman to conduct command and dispatch of ships .

The invention relates to a GIS-based smart city management special vehicle monitoring system, which takes an LBS system as a framework and a browser as a display platform. The system comprises a real-time monitoring service module, which provides positioning parameters for a historical track service module and a work and rest monitoring service module; the historical track service module, which can present the historical driving tracks of special vehicles on a digital map; a statistical analysis module, which can search historical boundary-crossing information of the special vehicles; and an electronic fence service module, which can carry out driving restriction on the special vehicles in some area, and can manage the special vehicles conveniently. The GIS-based smart city management special vehicle monitoring system realizes real-time monitoring of the special vehicles, facilitates to carry out basic data monitoring and command and dispatch on the special vehicles during city management, can present and display the historical driving tracks of the special vehicles, can trigger an alarm when the special vehicles cross boundaries, and can improve level of informatization of a supervision department and reduce management cost.