4results about How to "Reduce load shedding" patented technology

The present application relates to a kind of power system optimization scheduling method, equipment and storage medium considering transmission margin, the method includes the following steps: step S1, considering the fluctuation and uncertainty of new energy and load, quantifies node flexibility demand and its line distribution amount;Step S2, based on resource flexibility margin and line flexibility transmission margin, determine system flexibility deficiency evaluation index;Step S3, system flexibility deficiency evaluation index is used as opportunity constraint condition, constructs with total operation cost minimum as optimization goal, considers the double margin of resource and line Multi-source day-ahead optimization scheduling model, obtains optimization scheduling result by solving.Compared with prior art, the present application has the advantages of considering system flexibility in many aspects, reducing line congestion, reducing load shedding, improving new energy consumption.

An optimization method for stabilizing photovoltaic (PV) power generation fluctuations using distributed energy storage based on scenario sets is proposed. This method establishes a dispatchable capacity model for distributed energy storage based on its physical characteristics; establishes node voltage constraints and branch transmission capacity constraints for the distribution network; introduces reactive power regulation equipment to establish a dispatchable reactive power support range; and maintains power and voltage stability through distributed energy storage and various reactive power regulation devices while considering branch transmission capacity constraints. Finally, a coordinated optimization model for distributed energy storage based on PV power generation prediction scenarios is established. This invention prioritizes the basic safety of the distribution network and can be well applied to cities with abundant solar resources. By equipping distributed energy storage and certain reactive power regulation devices, it alleviates power and voltage fluctuations caused by intermittent PV power generation, thereby improving grid operational stability, reducing economic costs, and conserving resources.

The present application relates to the technical field of elastic power system planning optimization, and particularly relates to a power supply structure optimization method and system for energy transformation and elasticity improvement, comprising: constructing and solving a short-term unit commitment model according to collected power system data to obtain unit output and line power flow information; inputting the unit output and line power flow information into a constructed two-stage long-term power system planning model considering extreme events to obtain unit capacity expansion demand and the most serious extreme event scenario of the power system, and inputting the same into the short-term unit commitment operation model to take the same as a standard thermal power unit to be upgraded for unit upgrading to obtain unit expansion results. The present application realizes a unit structure optimization scheme combined with long-term planning and short-term operation by taking into account long-term expansion planning and short-term operation, thereby laying a foundation for subsequent elastic power system planning optimization research.

The utility model relates to the technical field of intercooler cleaning, and discloses an intercooler inner wall cleaning device which comprises a fixing seat, the end face of the fixing seat is fixedly connected with a feeding pipe, a communication groove is formed in the center of the interior of the fixing seat, and sliding grooves communicated with the interior of the communication groove are formed in the fixing seat at equal intervals. The inner wall of the intercooler pipeline is cleaned through the high-pressure nozzles, and the nozzles rotationally spray cleaning liquid in the center of the pipeline, so that xylene liquid is uniformly covered, local excessive scouring damage can be avoided, the cleaning effect is guaranteed, the service life of the pipeline is prolonged, the heat exchange effect is recovered, and load reduction of the device is reduced; due to the fact that xylene has good solubility on the polymers, EVA products adhered to the inner wall of the intercooler, fine powder formed by self-polymerization of ethylene and vinyl acetate and other dirt can be effectively dissolved and removed, compared with traditional high-pressure water cleaning, the cleaning effect is better, and the heat exchange effect of the intercooler can be more thoroughly recovered.