470 results about "Supply and distribution" patented technology

The invention relates to the technical field of tunnel power supply and distribution, in particular to a tunnel modular prefabricated cabin power supply and distribution intelligent substation self-adaptive regulation and control system based on edge calculation. Comprising an edge calculation and AI decision-making unit which is used for realizing rapid acquisition, processing and instant decision-making of tunnel power supply and distribution multi-dimensional data, generating a power supply and distribution adaptive regulation and control strategy by deploying calculation resources and a machine learning algorithm at edge nodes close to a data source, and converting the strategy into an executable regulation and control instruction; a cloud platform collaborative management unit; and an intelligent sensing and internet-of-things unit. According to the invention, hierarchical decision control of the tunnel power supply and distribution system is realized by constructing a hybrid architecture of edge computing and cloud platform collaboration and a priority judgment mechanism; according to the invention, multi-modal data are integrated through the multi-protocol communication link module and the full-scene data fusion analysis module, and data association analysis is realized through Kalman filtering, D-S evidence theory and other algorithms.

The invention discloses a self-adaptive switching system and method for power supply and distribution, and the system comprises a data collection module, an analysis module, a modeling module, a decision module, an execution module and an early warning module, and the data collection module generates a real-time monitoring signal; the analysis module performs dynamic weighted evaluation according to the real-time monitoring signal and generates an evaluation signal; the modeling module constructs a virtual model of the power supply system and generates an analog signal; the decision signal generates a control signal containing a path selection instruction; the execution module controls the semiconductor device to switch the physical connection state of the power supply according to the control signal and generates a switch feedback signal; and the early warning module forms an equipment health assessment result according to the switch feedback signal and an abnormal arc signal when the execution module switches the connection state and transmits the result to the decision module. The self-adaptive switching system for power supply and distribution can solve the problem that a traditional power supply and distribution switching system depends on a single threshold to judge the state of a power supply and cannot comprehensively evaluate the quality of electric energy.

The invention relates to a network topology dynamic optimization method and equipment for large-scale power supply and distribution equipment networking. The method comprises the following steps: step S101, real-time data acquisition and state sensing; step S102, carrying out network topology modeling and performance evaluation; step S103, dynamic risk assessment and optimization target generation; s104, carrying out topological optimization decision making based on a feasibility maintenance type genetic algorithm; step S105, carrying out optimal strategy verification and seamless switching; selecting an optimal network topology reconstruction scheme from the Pareto optimal solution set according to a preset decision strategy; and after the reconstruction scheme is verified on a control level, generating an equipment cascade and open circuit control instruction sequence, and guiding related nodes to complete undisturbed switching of the network topology in a preset time window through a distributed cooperative control mechanism. According to the method, generation of invalid solutions can be avoided, and the convergence efficiency of a large-scale network topology optimization algorithm is remarkably improved.

The invention relates to an airflow jet heat dissipation, dehumidification and dust removal system of a power device, and belongs to the technical field of power supply and distribution. Comprising an electric power device and a protection box body of the electric power device, the electric power device is arranged in the protection box body, at least one airflow ejector is installed in the protection box body, an air outlet nozzle of a jet flow nozzle of the airflow ejector corresponds to the surface of the electric power device, and the jet flow nozzle is in a wedge shape. Jet air generated by the airflow ejector efficiently and uniformly performs heat dissipation, dehumidification and dust removal on the electric power device, so that the purposes of saving air consumption, reducing energy consumption, preventing electric leakage and short circuit of electric appliances, reducing power loss, prolonging the service life of the electric power device and improving the safety and operation stability of the electric power device are achieved.

The invention discloses a power supply and distribution control system based on a virtual power plant, and relates to the technical field of power distribution systems. The system comprises five core modules: a digital twin simulation control closed loop module constructs a complete closed loop of data acquisition, simulation calculation, control execution and model iteration, and realizes real-time synchronization of a physical system and a digital mirror image and accurate issuing of a control instruction; the multi-agent source-load-storage optimization module improves the source-load-storage collaborative scheduling efficiency through distributed agent collection and reinforcement learning; the multi-scene energy storage adaptive control module generates a scene-based energy storage strategy based on meteorological, load and electricity price multi-dimensional perception and model prediction control; and the multi-type energy storage ratio linkage module realizes multi-type energy storage cooperative operation based on an energy storage characteristic database and scenarized weight optimization. All the modules work cooperatively, the system response speed, the control precision and the power supply stability are effectively improved, and the system is suitable for industrial parks and other complex power supply and distribution scenes.

The invention relates to the technical field of power electronics and power supply and distribution, and discloses a data center AC / DC power distribution system input and output voltage and current monitoring method, which comprises the following steps: deploying an intelligent sensing unit with edge computing capability at each monitoring node, sampling according to a basic frequency, and extracting effective values, harmonic distortion rates, differential change rates and other characteristics of voltage and current in real time; judging that the system is in a steady state, a quasi transient state or a strong transient state according to the multi-stage dynamic threshold value, and respectively executing feature abstract uploading, local high-frequency backtracking or collaborative full-waveform synchronous acquisition; and the central server classifies and stores the data, constructs a state evolution model, and dynamically optimizes threshold parameters. The system comprises an intelligent sensing unit, a central monitoring server and an industrial Ethernet link. According to the method, the steady-state data transmission quantity is remarkably reduced, transient details are completely captured, and adaptive adjustment of the monitoring sensitivity is realized.

The invention belongs to the technical field of power supply and distribution, and particularly relates to a hydrogen-lithium hybrid power supply multi-mode uninterruptible power supply system, a control method and a storage medium, and the system comprises a hydrogen energy power supply vehicle, a lithium battery energy storage unit, a power conversion subsystem PCS, a voltage phase tracking module, a static change-over switch STS and a control unit. According to the invention, through cooperative work of the lithium battery and the hydrogen fuel cell, millisecond-level rapid switching during commercial power failure is realized, continuity of load power supply is ensured, and the problem of starting delay of a traditional hydrogen energy system is solved. Intelligent cooperative control of hydrogen energy and lithium batteries is realized according to different scenes, energy distribution is optimized, and the operation efficiency and stability of the system are improved. The control unit monitors the operation state of each part of the system in real time, calculates the dynamic efficiency and grid-connected / off-grid stability control quantity of the system, generates a control signal according to the dynamic efficiency and the grid-connected / off-grid stability control quantity, coordinates the work of each part, and ensures that the system can operate efficiently and stably in various operation modes.

The invention discloses a short-circuit current limiting and short-circuit recovery transient voltage control device and method for an aviation three-stage power generation system, and the device comprises a three-stage power generator, a power generator controller, a current sensor, a voltage and current collection module, and an asymmetric half-bridge excitation control circuit. Collecting the output current iL and voltage UL of the generator through a digital processor of the generator controller; when short circuit occurs, the given voltage USet of the voltage regulating loop is linearly reduced in a piecewise mode according to the relation between the iL and a preset threshold value, so that the generator works in a constant power interval; and when the short circuit is recovered, closing the upper / lower power tubes of the asymmetric half-bridge excitation control circuit according to the relationship between UL and a preset threshold value in a grading manner, and triggering a negative-pressure follow-current mode of a main excitation winding of the generator controller to quickly extinguish the field. The method can adapt to different generators without adjusting hardware circuit parameters, has no motor ablation risk during short circuit, has transient voltage less than 350V after short circuit recovery, has no power supply interruption in the whole process, has response delay less than 1ms, and greatly improves the safety and robustness of an aviation power supply and distribution system.

The invention provides an open type avionics system for a multipurpose unmanned aerial vehicle, and relates to an unmanned aerial vehicle electronic system, the system comprises a comprehensive processing module, a navigation module, a servo module, a power supply and distribution module and a load module, and the modules realize data interaction through an interconnection bus; a protocol conversion module with standardized interfaces is further arranged between the load module and the comprehensive processing module, and the protocol conversion module is used for converting various non-standardized load interfaces into unified and standardized interfaces so as to support effective communication and data exchange between the load module and the comprehensive processing module. Based on the design ideas of comprehensive modularization, bus interconnection and interface standardization, all functional modules of an existing unmanned aerial vehicle electronic system are designed in a centralized and integrated mode, and the multipurpose unmanned aerial vehicle electronic system with high integration and interface standardization is formed.

The invention discloses a power utilization inspection task automatic generation and distribution method and system, and relates to the technical field of power supply and distribution, and the method comprises the steps: carrying out the data collection of regional nodes, building a regional node data set, carrying out the power utilization risk recognition, creating M power utilization inspection tasks, and building a first task priority; activating a backtracking extraction channel, carrying out electricity consumption information backtracking extraction, establishing M electricity consumption information sequences, and establishing a second task priority; and performing multi-agent adaptation analysis according to the first task priority and the second task priority, and establishing a power utilization inspection task distribution result. The method solves the technical problems of low task execution efficiency and slow response speed caused by dependence on manual arrangement and lack of intelligent analysis and real-time response capabilities of the power utilization inspection task in the prior art, and achieves the purposes of automatically generating the power utilization inspection task by fusing multi-source data, dynamically adjusting the task priority in combination with real-time data, and improving the efficiency of power utilization inspection. And the task execution efficiency and the response speed are improved.

The invention relates to the technical field of low-voltage power supply and distribution systems, and discloses a dual-power-supply quick switching circuit for a low-voltage power supply system, which comprises a main power supply, a standby power supply, a circuit breaker QF1, a circuit breaker QF2, a relay KA1, a relay KA2, an alternating current contactor KM1, an alternating current contactor KM2 and a load, the main power supply is connected with the circuit breaker QF1, one path of the QF1 is connected with the KM1, and the KM1 is connected with the load; the other path is connected with the KA1 from the QF1, the KA1 is connected with the KM2, the KM2 is connected with a coil of the KM1 and then connected with the zero line N, and the 1B phase line and the 1C phase line of the main power supply are further connected with the two ends of the coil of the KA1; the standby power supply is connected with the circuit breaker QF2, one path of the QF2 is connected with the KM2, the KM2 is connected with the load, the other path of the QF2 is connected with the KA2 from the QF2, the KA2 is connected with the KM1, the KM1 is connected with a coil of the KM2 and then connected with the null line N, and the 2A phase line and the 2B phase line of the standby power supply are further connected with the two ends of the coil of the KA2. When the main power supply is abnormal, the standby power supply can be quickly switched to avoid shutdown of the lower-level equipment, the standby power supply can be automatically switched after the lower-level short circuit fault is isolated, and the power supply reliability of the low-voltage power supply and distribution system is greatly improved.

The invention discloses an electric energy management system and method for a multi-electric aero-engine, which are mainly suitable for comprehensive electric energy management of the multi-electric aero-engine. The system is mainly composed of a starter generator unit, a high-voltage energy storage unit, a power supply and distribution control unit and an electricity load unit. The management method comprises the steps of power supply framework initialization, starting power supply control, operation power generation switching, fault emergency processing and the like. A power supply and distribution centralized management mode is adopted, high and low voltage direct current buses are configured, all power supplies supply power to the buses, all loads take power from the buses, and the power supply and taking process is controlled by a power distribution unit. Aiming at control management of a multi-electric aero-engine power supply, an electric load and the like, reasonable, reliable and safe electric energy distribution management is performed on electrified equipment such as a starter generator, an energy storage battery, the electric load and the like through the electric energy management system, the energy conversion efficiency is improved, the weight of accessories is reduced, and the system is simple and easy to control; the engine working performance is improved.

The invention relates to the technical field of transformer substation monitoring, and discloses a power supply and distribution safety monitoring method and system for a transformer substation. The method comprises the following steps: acquiring various data in a transformer substation, and performing time synchronization calibration on the three types of data; dividing a power supply and distribution operation mode into a steady-state mode, a transient mode and an overload mode based on the calibrated data, extracting a harmonic distortion rate, a dielectric loss angle tangent value and a vibration spectrum entropy value of a current waveform in each mode, and generating an operation characteristic matrix; detecting an operation mode switching event, and calculating a characteristic offset between modes; decomposing a degradation characteristic component in the operation characteristic matrix according to a matching degree between an insulation aging stage and current dielectric loss data in a historical fault case library; coupling compensation correction is performed on the degradation characteristic component in combination with the cross influence relationship between the electrical parameters and the mechanical parameters of the equipment; and reversely tracing the abnormal signal source equipment node along the topological structure of the power supply and distribution network based on the corrected degradation characteristic component, and outputting an equipment maintenance sequence.

The invention discloses a vehicle-mounted high-power power supply and distribution system and method, and the method comprises the steps: enabling one end of an engine to be provided with a transmission wheel train and a high-voltage generator during the running process of a vehicle, and enabling the output rotating speed of the engine to be improved to the rated rotating speed of the high-voltage generator through the transmission wheel train; high-voltage direct current output by the generator drives a high-voltage electric appliance to work after being subjected to voltage stabilization and filtering by the high-voltage distribution box; when an automobile is parked and a mains supply is used, alternating-current mains supply is inverted into direct-current power through the high-voltage distribution box to drive a high-voltage electric appliance to work. The defects that a traditional vehicle cannot run and cannot supply power in a high-power mode under the parking condition can be overcome, especially the technical problem of power supply under the parking condition is solved, software system adaptation development is carried out through the comprehensive technical scheme of a high-power high-voltage silicon generator, mains supply inversion, power supply filtering and the like in combination with post-stage power utilization characteristics, and the power supply efficiency is improved. And stable power supply of the air-conditioning system under running and parking conditions is ensured.

The invention discloses a reinforcement learning-based cable arrangement method and system in a power supply and distribution system, and a storage medium. The method comprises the following steps of S1, obtaining cable information, laying environment information and constraints required to be met by cable laying; s2, abstracting a bridge system into a weighted undirected topological graph; s3, calling a path planning algorithm based on reinforcement learning, and calculating an optimal cable laying path by taking a minimum comprehensive cost function including path length cost, plot ratio cost and precious penalty terms as an optimization target under the constraint that cable laying needs to be met; s4, calculating the center coordinate of each cable to be arranged in each bridge by adopting a greedy algorithm according to the optimal cable laying path, and arranging the cables according to the center coordinate; according to the method, the optimal laying and arrangement path can be planned on the premise of meeting various physical constraints of cable laying, and the method can automatically and dynamically adapt to different laying scenes.

The invention belongs to the technical field of power supply and distribution of a data center, and provides an electrical protection method and system for power supply and distribution of the data center, aiming at the data center of a 2N power distribution architecture, electric energy parameters of two paths of external mains supply are collected and transmitted to an EMS of an energy storage system, and system charging and discharging power is controlled and adjusted through the EMS. According to the fact that the sum of the power on the two alternating current buses is larger than a set protection threshold value, the first switch device is controlled to cut off the connection between the energy storage system and the second alternating current bus, overload of a superior line or a transformer during charging or power supply switching is prevented, and in addition, through the measures of a reverse power detection device, first-path voltage loss linkage and the like, the energy storage system can be effectively protected. An external electrical protection system independent of the energy storage system is added to form dual protection, so that a dual fault superposition scene of energy storage system faults or power grid faults is effectively isolated, and the reliability of an originally designed power supply network of the data center is guaranteed.

The invention relates to the technical field of power supply and distribution, in particular to a three-phase load intelligent regulation and control method based on ammeter data, and the method comprises the steps: carrying out the empirical mode decomposition of each phase of current time sequence in three-phase current time sequence data, and obtaining a plurality of internal mode function components; performing fast Fourier transform on each internal mode function component to obtain frequency domain information, calculating power spectrum density and extracting a peak value to obtain a characteristic period set; setting a basic prior period, generating a prior period set based on different multiples, calculating the matching confidence of each characteristic period in each internal modal function component and each prior period in the prior period set, and constructing a corresponding normalized characteristic period matrix; constructing a global period confidence coefficient vector; and the global period confidence vector is used as the input of the long short-term memory network, and the change trend of the target signal is predicted, so that the prediction precision of the LSTM model on the load change is improved, and intelligent regulation and control of the three-phase load are realized.

The invention relates to the technical field of security defense and intelligent scheduling of power supply, and discloses an intelligent power supply and distribution centralized monitoring application data interaction method and system. Operation state data and scheduling behavior data are managed in a monitoring platform, and a logic change tracking mechanism is introduced, so that the intelligent power supply and distribution centralized monitoring application data interaction is realized. The whole process of scheduling instruction generation, path issuing and response feedback is recorded, and an auditable data chain with time logic and a causal structure is formed. Therefore, when the abnormal index is detected, the data chain can be automatically called to perform backtracking analysis on the scheduling behavior, the causal association between the abnormal cause and the scheduling behavior is determined, data support is provided for subsequent scheduling adjustment, the abnormal response intelligent level based on monitoring data and the interpretability of scheduling adjustment decision are improved, and the scheduling efficiency is improved. And therefore, the manageability, controllability and operation safety of power supply and distribution can be effectively ensured.

The invention provides a building power supply and distribution electrical system model construction method based on an analogy analysis method, and belongs to the technical field of power distribution electrical system models. And carrying out load identification and capacity prediction by using the load capacity adaptive matching model. And then constructing a high-voltage side capacity model block by adopting a graph theory algorithm, and realizing capacity adaptation through recursion degree calculation and model change gain degree evaluation. Establishing a multi-physics field coupling effect sub-model, and describing the stability characteristics of the system by using a current stability matrix; and analyzing and evaluating a nonlinear load and a distributed power supply through big data, and establishing a load prediction and power evaluation sub-model. And then a capacity gain matrix is calculated by adopting comprehensive dynamic model adaptation simulation, parameter backstepping optimization is realized, and finally a final power supply and distribution electrical system model is generated.

The invention provides a power supply and distribution control method for an offshore wind-solar complementary direct supply type seabed data center, and the method comprises the steps: collecting wind power and photovoltaic electric energy to an ashore substation through a same AC power transmission channel, converting the wind power and photovoltaic electric energy into a first AC voltage, and generating a DC bus voltage; the direct-current bus directly supplies information processing load, and the first alternating-current voltage drives the cooling system; configuring a multi-time-scale energy storage system comprising a super capacitor, a flow battery and a standby power supply, and stabilizing second-level, minute-to-hour-level and longer-period power fluctuations respectively; based on wind and light output prediction and the energy storage charge state, load and charge and discharge are dispatched cooperatively. According to the method, the power transmission cost and conversion loss are reduced, the green power consumption rate and the power supply quality are improved, the dependence on outsourcing power is reduced, and efficient, stable and low-carbon operation is realized.

The invention discloses a ship electrical loss monitoring system and control method, an electronic device and a storage medium. The ship electrical loss monitoring system comprises a power supply system electrical loss centralized monitoring display and recording unit, a signal collection unit, a plurality of branch electrical loss monitors and a plurality of electrical loss monitoring sensors. The plurality of electrical loss monitoring sensors are used for monitoring and collecting real-time data of current, voltage and power of each load loop and transmitting the real-time data to the plurality of branch electrical loss monitors, and the plurality of branch electrical loss monitors are used for collecting and displaying electrical loss conditions of branches of the ship power supply and distribution system; the signal collection unit is used for processing the data collected by the plurality of branch electric loss monitors and then transmitting the data to the power supply system electric loss centralized monitoring display and recording unit; the power supply system electric loss centralized monitoring display and recording unit is used for real-time display, printing and diary of loop electric loss of the ship power supply and distribution system. The electric loss in the ship power supply system is automatically monitored in real time, the detection time is saved, and the detection effect is improved.

The invention relates to the technical field of power supply and distribution monitoring, in particular to a power supply and distribution system performance health state dynamic monitoring system which comprises a state acquisition module, a power supply switching module, a power supply monitoring module, a switching matching module and a state evaluation module. The method comprises the following steps: combining power supply equipment as power supply nodes into a power supply distribution network, and checking switching behavior characteristics of a current power supply node according to operation information of the power supply nodes and operation time and switching times of the power supply nodes; the similarity during switching of different power supply modes is checked according to the voltage deviation and the load deviation of the operation information, and updating of the operation information of each power supply node is completed; starting from switching behavior characteristics, describing a switching mode of a current power supply node under power supply mode switching, describing a switching matching network of each power supply node according to a switching sequence of the switching modes, and finally screening an optimal configuration scheme corresponding to each power supply node; the efficiency of anomaly detection and the reliability of switching of the power supply and distribution system are realized.

The invention discloses an electric energy feedback collection and load peak suppression system for a wharf crane, and relates to the technical field of wharf power supply and distribution and energy management. Wherein the wharf crane comprises a quayside container crane (quay crane), a rail or rubber-tyred container portal crane (gantry crane) and the like, which are called cranes for short hereinafter. According to the system, instantaneous power, average power, peak duration and power increasing rate of a wharf power station, feedback power and feedback electric energy of a crane, capacity and charging and discharging parameters of an energy storage device, and electric energy quality indexes of a power grid are collected in real time; respectively calculating a peak impact index, a feedback absorption coefficient, a peak valley switching coefficient and a harmonic suppression coefficient, and comparing and analyzing with a preset threshold to generate a corresponding strategy; and integrating the results of the modules, carrying out unified scheduling on the energy storage device, and realizing power fluctuation compensation and stable output through a smooth scheduling strategy, thereby constructing an operation mechanism. According to the method, the instantaneous peak power of the wharf power station can be effectively inhibited, the feedback energy consumption capability is improved, the peak-valley scheduling economy is optimized, the electric energy quality is improved, and the safety, stability and energy efficiency of system operation are improved.

The invention belongs to the technical field of power supply and distribution systems, and discloses a direct current power supply and distribution system and method of a nuclear power station facing a computing power data center, and the system comprises a direct current power supply and distribution architecture of a main power supply system, a medium-voltage direct current system and a low-voltage direct current system. Alternating current of a main power supply system is converted into medium-voltage direct current to be supplied to a medium-voltage direct current system through a first voltage conversion module, then the medium-voltage direct current is converted into low-voltage direct current to be supplied to a low-voltage direct current system through a second voltage conversion module, and the medium-voltage direct current system directly supplies power to a low-voltage system when a main power supply fails. And when the main power supply and the medium-voltage system both fail, the low-voltage system operates independently to meet the load requirement. By adopting the system, the equipment investment and the operation cost are obviously reduced, the electric energy transmission efficiency and the power supply reliability are improved, the potential safety hazard is eliminated, and the efficient cooperative power supply of the station power of the nuclear power station and the load of the data center is realized.

The invention provides a power supply and distribution system fault early warning method and system based on multi-parameter trend analysis, and relates to the field of power monitoring. The method comprises the following steps: collecting multi-parameter time sequence data of a power supply and distribution system, and carrying out working condition environment box classification to obtain a classified data set; a sliding window algorithm is adopted to extract time sequence features of the classified data set, the change trend slope of parameters in each window is calculated through linear regression, and trend feature data are obtained. And based on the trend feature data, judging an abnormal trend and generating an abnormal mark and an associated parameter set. And performing fault positioning analysis and temperature rise coefficient calculation on the abnormal mark and the associated parameter set, performing fault state identification in combination with short-term environment data, and generating a fault positioning analysis result. And generating an early warning signal based on a fault positioning analysis result. The technical problems of fault early warning lag and low positioning accuracy caused by lack of analysis of multi-parameter variation trend and no elimination of environmental factor interference are solved.

The invention provides a communication satellite verification system based on a general virtual test environment. The communication satellite verification system comprises a service subsystem and virtual test equipment, the service subsystem comprises a power supply and distribution subsystem ground device, a measurement and control and comprehensive electronic subsystem ground device, a thermistor equivalent device, a general control device with an MTP server and the like, and the general control device is responsible for telemetering data processing and remote control instruction scheduling; and the virtual test equipment is connected with the service subsystem, is used for simulating a satellite-borne software operation environment and a satellite-borne load to form a closed-loop test, comprises a plurality of simulation modules such as orbit and attitude dynamics, and respectively realizes orbit attitude parameter calculation, software code operation simulation and circuit box function simulation so as to test a satellite or a verification platform. The invention further provides a satellite-borne software verification method. Therefore, communication satellite verification can be carried out under the virtual condition, the test comprehensiveness can be ensured, and the test cost can be reduced.

The invention discloses a low-voltage transformer area topology identification method and system based on node mutual impedance characteristic identification, and relates to the technical field of power supply and distribution. The identification method comprises the following steps: firstly, synchronously acquiring voltage and current time sequence data of the head end of a transformer area and each user node; constructing and solving a mathematical model based on a circuit superposition principle to obtain a user node mutual impedance coefficient matrix; the impedance feature vector of each user node is extracted, the difference value between the self-impedance and the mutual impedance is calculated, and the difference value is compared with a preset judgment threshold value based on physical parameters, so that the relationship between the upstream and the downstream of the user nodes and the same access point is accurately judged; and finally, reconstructing a complete tree-shaped physical topology of the transformer area. According to the method, only existing measurement data is utilized, extra hardware is not depended on, efficient and accurate automatic identification of the topological structure of the low-voltage transformer area is achieved, and reliable support is provided for refined operation and maintenance such as power distribution network line loss treatment and fault positioning.

The invention discloses a method for introducing a power bus short-circuit fault equivalent model for a manufacturing enterprise and belongs to the field of power supply and distribution systems. Comprises: setting an enterprise typical introduction power supply system; screening system short-circuit current equivalent branches; the enterprise introduces power supply short-circuit impedance equivalent processing; equivalently processing a tie line between the first and second lead-in power buses of the enterprise; modeling by using professional short-circuit current calculation software; the method comprises the following steps: opening a connecting line between two sections of lead-in power supply buses, modeling by taking a first lead-in power supply bus and a second lead-in power supply bus of an enterprise as two independent power supply systems, constructing an equivalent model of a short-circuit fault of the lead-in power supply buses of the enterprise through an impedance equivalent processing method of the connecting line of the lead-in power supply buses, and carrying out short-circuit fault simulation modeling. The method for establishing the equivalent model of the tie line between the two introduced power buses of the internal power grid of the enterprise is provided by performing equivalent processing on the impedance of the introduced power buses, especially the tie line, so that the correctness of short-circuit current calculation of the enterprise can be improved. The method is suitable for the field of enterprise internal power grid simulation modeling.

1. The name of this design product: integrated intelligent computer room cabinet (indoor cabinet). 2. Application of this design product: Mainly used for operation and maintenance control, power supply and distribution, refrigeration, UPS and battery, fire protection and security, alarm monitoring, and integrated wiring of data center computer rooms. 3. The key design point of this design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The present invention discloses a bus duct assembly optimization method and system for an offshore platform supply and distribution system, which relates to the field of busbar installation technology. The method comprises: obtaining target marine environment information through the target offshore platform area location; extracting strongly correlated influencing factors, performing bus duct seismic performance analysis, and obtaining an optimal assembly support scheme based on the seismic performance analysis results; obtaining electrical equipment operating data of the offshore platform supply and distribution system, performing equipment heat dissipation analysis and heat dissipation structure optimization, and obtaining an optimal heat dissipation optimization scheme; and assembling the bus duct in combination with the optimal assembly support scheme and the optimal heat dissipation optimization scheme. The present invention solves the technical problem in the prior art that, due to the particularity of the marine environment, bus duct assembly deviations are easily caused, affecting the safety and stability of the bus duct, and achieves the technical effect of improving the seismic performance and heat dissipation efficiency of the bus duct in the marine environment and improving the operational stability of the system.