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79results about How to "Relieve load pressure" patented technology

Web and micro-service unified authentication system and method

ActiveCN110120946AGuaranteed unified certificationImprove access efficiencyTransmissionApplication serverHome page
The invention provides a Web and micro-service unified authentication system and method. The system comprises a client, an Nginx server, a gateway server, an authorization server, a micro-service application server and an original Web system application server. The method comprises the following steps that: Nginx redirects a client micro-service login request; the client authorization request caches the client ID and the redirection address through the gateway, and redirects after forwarding the authorization service; a client login request returns a login page to submit login information, andthe login information is redirected after being authenticated by an authorization service to generate a token, and the token and a time stamp are cached to the gateway; the client micro-service homepage request forwards data returned by the micro-service background through gateway authentication; the Nginx redirects the original Web system login request of the client; the client authorization request is redirected after being authenticated by the gateway and the authorization service; and the home page request of the original Web system of the client is authenticated by the gateway and is forwarded to the Web background to return data. According to the invention, the access efficiency is improved, the gateway load pressure is relieved, and the universality is realized.
Owner:WUHAN UNIV OF TECH

MQTT double-Broker data interaction method and system suitable for edge Internet of Things terminal

PendingCN112104720AIncrease load capacitySolve communication disconnectionData switching networksEngineeringReal-time computing
The invention discloses an MQTT double-Broker data interaction method and system suitable for an edge Internet of Things terminal, and the method is executed by a client, and comprises the steps: transmitting an MQTT connection message to an access module, receiving a connection reply message fed back by the access module, and completing the connection; sending an MQTT theme subscription message to the access module, receiving a subscription reply message fed back by the access module, and completing theme subscription; sending an MQTT theme subscription canceling message to the access module,receiving a subscription canceling reply message fed back by the access module, and completing theme subscription canceling; an MQTT heartbeat message is sent to the access module, a heartbeat replymessage fed back by the access module is received, and it is guaranteed that the client side is online to the Broker 1 and the Broker 2; sending an MQTT release type message to the access module, andreceiving a release reply message fed back by the access module; and confirming QoS setting according to message classification, sending the published dump message to the access module again, and receiving a published dump reply message fed back by the access module. The load capacity of the whole communication environment is improved.
Owner:NARI TECH CO LTD +4

Power distribution network frame fuzzy programming method taking DG uncertainty into account

The invention discloses a power distribution network frame fuzzy programming method taking DG uncertainty into account. The method includes the following steps of according to the uncertainty of a distributed power source, constructing a first-type distributed power source output model and a second-type distributed power source output model; according to the second-type distributed power source output model, adopting a power distribution network topology structure constraint, a node voltage upper limit, a permeability constraint and a system power balance constraint as constraint conditions tocreate a power distribution network frame programming target function which involves the distributed power source and is based on a fuzzy expected value, wherein the fuzzy expected value is obtainedby means of fuzzy power flow calculation; adopting a genetic algorithm for solution, and obtaining power distribution network frame fuzzy programming of the distributed power source. According to theuncertainty of the distributed power source, power distribution network frame fuzzy programming involving the distributed power source is achieved; with a fuzzy expected value of the annual average expense as the target, more convenience is provided for utilizing the genetic algorithm for optimization searching, and the practicability is high.
Owner:NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER

Charging station group control system and method based on cloud platform

ActiveCN110126666AReasonable and efficient allocationEfficient Energy AllocationCharging stationsElectric vehicle charging technologyElectricityPower grid
The embodiments of the invention provide a charging station group control system and method based on a cloud platform. The charging station control method includes the steps of charging station background control, flexible charging stack control and charging pile control; the charging station background control is used for carrying out charging dispatching on a charging station through a grid selection method; the flexible charging stack control is used for dynamically distributing power in the charging station; and the charging pile control is used for electric automobile charging and human-machine interaction. The charging station group control system comprises an electricity supply and distributing module, a monitoring module, a charging module and a charging station management platform, wherein the charging module is composed of a charging station background control unit, a flexible charging stack unit and a charging pile unit. According to the charging station group control systemand method based on the cloud platform, the three parts of the charging module of the charging station are controlled, charging vehicles in the charging station are dispatched, power in the chargingstation is dynamically distributed, the optimal charging group control scheme is output, and the influence of electric automobile group charging on the charging load power of a power grid is relievedto the maximum extent.
Owner:武汉经开科创运营有限公司

Optical storage and charging integrated hierarchical coordination control system and control strategy thereof

The invention provides an optical storage and charging integrated hierarchical coordination control system and a control strategy thereof, relates to the technical field of optical storage and charging integrated control, and solves the problem that the existing optical storage and charging integrated research cannot efficiently exert the coordination control effects of peak clipping and valley filling of optical storage and charging and promotion of source-load interaction. A battery energy management system layer, a direct-current charging and discharging pile layer, a current conversion system layer and a battery energy management system layer are constructed to serve as a master control center, and first data information of the layers, second data information of the direct-current charging and discharging pile layer and third data information of the current conversion system layer are transmitted to a cloud platform server through an intermediate communication device; a control instruction of a cloud platform server is received, and then the information is send, thereby realizing cooperative control of battery energy storage, a DC charging and discharging pile and a photovoltaic array and stable operation of photovoltaic storage and charging integration, promoting friendly interaction of source loads, realizing an idea of peak clipping and valley filling, and utilizing thevalue of photovoltaic storage and charging integration to the greatest extent.
Owner:SOUTHERN POWER GRID PEAK LOAD & FREQUENCY REGULATION GENERATING CO LTD +3

Power line carrier communication regulation and control system and method combined with switch conversion device

ActiveCN113381508AAchieve a high degree of matchingAchieve targeted matchingLoad forecast in ac networkSustainable buildingsCarrier signalPower usage
The invention discloses a power line carrier communication regulation and control system and method combined with a switch conversion device. The system comprises a broadband carrier circuit breaker, a broadband carrier concentrator, a communication module and a control end which are connected in sequence. The method comprises the following steps: S1, judging the response qualification of a user; S2, reaching a demand response agreement with the user; S3, monitoring the power load condition by a power master station operation platform; S4, issuing a task by a handheld control terminal according to the power load and the demand response amount; and S5, realizing power load regulation and control through a broadband carrier circuit breaker. According to the technical scheme, a low-voltage user load curve and a power grid load curve are subjected to normalization processing to achieve high matching of the low-voltage user load curve and the power grid load curve, the user air switch qualification is judged according to the coincidence condition of the peak load time periods between the low-voltage user load curve and the power grid load curve, and agreement invitation is carried out on the users meeting the conditions, so that the purpose of intelligent regulation and control is achieved according to the electricity consumption condition.
Owner:STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO +2

Bi-directional leading shoe type brake mechanism based on drum brake

The invention relates to the technical field of automobile brake equipment, and discloses a bi-directional leading shoe type brake mechanism based on a drum brake. The mechanism comprises a brake drum, wherein a sliding groove is formed in the middle of the surface of the brake drum, a friction plate is arranged on the inner wall of the brake drum, and a ball-shaped sliding groove is formed in oneside of a brake shoe. According to the bi-directional leading shoe type brake mechanism based on the drum brake, through arrangement of a brake connecting rod I, a brake connecting rod II and brake ball seats, and using a manner of axis rotation, the four brake ball seats fixedly mounted at both ends of the brake connecting rod I and the brake connecting rod II may move synchronously. Compared with the prior art, it can be guaranteed that the upper end and the lower end of the brake shoe are simultaneously opened outwards to apply pressure to the friction plate, so that load pressure to be borne by a dynamic pressure cylinder during braking is effectively relieved, meanwhile, stresses on the two ends of the brake shoe are uniform, vibration generated by the brake shoe during braking is effectively reduced, and abrasion to the friction plate by the brake shoe is further reduced, and the service life of the friction plate is prolonged.
Owner:周长虹

A charging station group control system and control method based on cloud platform

ActiveCN110126666BReasonable and efficient allocationEfficient Energy AllocationCharging stationsElectric vehicle charging technologyPower gridControl cell
The embodiment of the present invention provides a charging station group control system and control method based on a cloud platform. The charging station control method includes three parts: charging station background control, flexible charging pile, and charging pile. The charging station background control uses a grid The selection method is used to schedule the charging of the charging station; the flexible charging pile dynamically allocates the power in the charging station; the charging pile completes the charging of electric vehicles and human-computer interaction; the group control system of the charging station includes: power supply and distribution module, monitoring module, charging module and The charging station management platform; the charging module is composed of three parts: the charging background control unit, the flexible charging stack unit, and the charging pile unit. The embodiment of the present invention provides a charging station group control system and control method based on the cloud platform, and the charging station charging module The control of the three parts of the charging station dispatches the charging vehicles at the charging station, dynamically allocates the power in the charging station, and outputs the optimal charging group control scheme to minimize the impact of electric vehicle group charging on the charging load power of the grid.
Owner:武汉经开科创运营有限公司
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