257 results about "Off-the-grid" patented technology

The embodiment of the invention relates to the technical field of energy storage, and provides an off-grid operation method of an energy storage system, the energy storage system and electric equipment, and the operation method comprises the steps: determining whether the grid connection of the energy storage system is powered down or not; under the condition of grid-connected power failure of the energy storage system, port voltage and port current of a load of the energy storage system at the grid-connected power failure moment are obtained, the port voltage of the load is the voltage of one end, connected with a filter of the energy storage system, of the load, and the port current of the load is the current of one end, connected with the filter of the energy storage system, of the load; the arc extinguishing current of the energy storage system is obtained, whether the off-line power-on moment of the energy storage system is reached or not is determined according to the size of the arc extinguishing current, and the arc extinguishing current is the current flowing through the filter; and under the condition that the off-grid power-on moment is reached, off-grid power generation is controlled, and the energy storage system is controlled to operate in an off-grid operation mode based on the port voltage and the port current of the load. The method determines whether to start off-grid according to the magnitude of the arc extinguishing current, thereby avoiding impact caused by direct start.

The invention discloses an off-grid new energy hydrogen production start control method, system, device and medium, and relates to the technical field of new energy hydrogen production control and micro-grid operation management, and the method comprises the steps: employing energy storage zero-to-boost control and anti-interference communication to establish a bus voltage based on an off-grid system architecture; the output power of the wind turbine generator is adjusted through a variable pitch power following strategy based on short-term wind speed prediction, the power distribution proportion of the wind turbine generator and the energy storage device is dynamically adjusted by adopting an improved NSGA-II multi-target optimization algorithm in combination with the equipment health state factor, and the power output path and the response rate of the equipment are optimized; electrolytic hydrogen production is carried out by adopting electrolytic tank pre-starting condition inspection, stepped power rising and stepped starting of grid-connected transition in cooperation with closed-loop temperature flow regulation and a PID pressure management strategy, and black-start rollback and self-healing control are executed. According to the method, the stable construction of the bus voltage is realized through the boost control from zero energy storage, and the current impact in the starting process is effectively inhibited.

The invention belongs to the technical field of load prediction, and discloses an off-grid micro-grid system load prediction method and system based on a neural network. The method comprises the following steps: constructing an equipment fault diagnosis model, an energy scheduling model and a load prediction model by using a neural network algorithm; carrying out data acquisition and preprocessing to obtain preprocessed real-time area monitoring data; performing equipment fault diagnosis by using the equipment fault diagnosis model; if the real-time equipment fault diagnosis result is that a fault exists, entering an energy scheduling step, otherwise, entering a load prediction step; performing energy scheduling by using the energy scheduling model, executing the obtained real-time energy scheduling scheme, and returning to the data acquisition step; and performing load prediction by using the load prediction model. According to the method, the problems of data island, insufficient model generalization ability, limited fault diagnosis precision and efficiency, insufficient energy scheduling strategy optimization and poor load prediction precision and robustness in the prior art are solved.

The invention provides an off-grid synthetic ammonia park electrolytic bath column level-energy storage-hydrogen storage collaborative optimization method based on rolling optimization, and relates to the technical field of energy storage and hydrogen storage collaboration. The method comprises the following steps: constructing an off-grid system architecture comprising wind-solar power generation, a plurality of rows of electrolytic cells, energy and hydrogen storage equipment and a synthesis ammonia device; a multi-device collaborative optimization strategy based on an eight-hour rolling time domain is designed, the system operation state is divided into high, medium and low working conditions through a working condition recognition mechanism, a current device operation scheme is actively adjusted according to wind and light power information of a next scheduling period, and collaborative regulation and control of energy storage and hydrogen storage are achieved. Compared with a traditional scheduling strategy, the collaborative optimization strategy provided by the invention improves the consumption rate of renewable energy sources of the system, reduces abandoned wind and light, improves the yield of synthetic ammonia, and verifies the effectiveness of the strategy.

The invention discloses an off-grid ALK-PEM green energy coupling hydrogen production system parameter configuration method. The method comprises the steps that S1, wind and light fluctuation characteristic parameters are collected; s2, calculating the capacity ratio of the electrolytic cell; s3, performing control parameter mapping; and S4, parameters of the cooling system are designed. The invention further discloses a corresponding configuration system, a configuration device, electronic equipment and a computer readable storage medium, and aims at a parameter collaborative configuration method of an alkaline electrolytic cell (ALK) and proton exchange membrane electrolytic cell (PEM) mixed hydrogen production system in a wind and light off-grid power supply scene, so that the core problems of low hydrogen production efficiency, short equipment service life, system instability and the like under a fluctuating power supply are solved.

The invention provides a control method of a hybrid energy storage system, the hybrid energy storage system and equipment, and relates to the technical field of electric power. According to the scheme, the operation mode (off-grid or grid-connected) of the hybrid energy storage system is accurately identified, and the power supply role is intelligently and dynamically allocated according to the control strategy corresponding to the current operation mode, so that efficient operation and optimal management of the system are realized, and the purpose of supplying power to the local load in the grid-connected or off-grid operation mode is achieved. In an off-grid mode, the high-rate charge-discharge advantage of the sodium-ion battery can be fully played, the power requirement is quickly responded, and stable power supply of the system is ensured; in the grid-connected mode, the charging and discharging power of the two energy storage units can be flexibly adjusted by combining the characteristics of the power grid, the interaction of the power grid is optimized, and the overall performance of the system is improved.

The invention discloses a capacity configuration method and system for an off-grid wind and light storage combined hydrogen production system, and belongs to the technical field of renewable energy and hydrogen energy utilization. The method comprises the steps that a multi-time-scale coupling mathematical model including a wind power generation system, a photovoltaic power generation system, an energy storage system and an alkaline electrolytic cell is constructed, and a multi-target optimization model is constructed with the minimization of the annual wind and light abandoning rate, the minimization of the leveling hydrogen production cost and the minimization of the cold start proportion of the electrolytic cell as targets; and solving the multi-objective optimization model by adopting a multi-objective marine predator algorithm to obtain a Pareto solution set, determining an objective function entropy weight of the multi-objective optimization model by utilizing an improved entropy weight method, and selecting an optimal compromise solution as a system capacity configuration scheme. According to the method, the problem that the influence of wind and light output multi-time scale coupling, energy storage, dynamic response characteristics of the electrolytic cell and cold start of the electrolytic cell is ignored in the existing technical scheme is solved, and the purposes of efficiently absorbing wind and light resource fluctuation by the off-grid hydrogen production system, enhancing the operation reliability and optimizing the economic performance are achieved.

The invention relates to an off-grid photovoltaic air conditioner self-adaptive control system and method based on rolling self-learning, and aims to solve the problems of low power supply reliability, large battery loss, inflexible temperature control, weak adaptability and the like caused by poor matching between an existing off-grid photovoltaic system and an air conditioner load. The method mainly comprises the steps that parameters are collected in real time, loads are calculated, and air conditioning unit operation frequency bands of the off-grid system are dynamically divided based on the temperature difference; constructing a multi-target model for guaranteeing power supply, prolonging the service life of the battery and optimizing the thermal comfort of the off-grid system, and adaptively adjusting the target by utilizing a dynamic weight coefficient; the optimal sequence is solved through rolling time window optimization, and the off-grid regulation and control strategy is adjusted in real time in combination with temperature gradient feedback. According to the method, the energy dynamic matching efficiency in the off-grid supply and demand system can be improved, power supply is guaranteed, fine adjustment of temperature control is achieved, harmful charging and discharging are limited based on state optimization, loss is reduced, the service life is prolonged, and compared with a traditional regulation and control strategy, the method has remarkable advantages in reliability, comfort and economical efficiency.

The invention belongs to the technical field of comprehensive energy systems, and particularly relates to a water-wind-light-hydrogen multi-energy complementary off-grid system comprehensive benefit evaluation method based on TOPSIS. According to the technical scheme, the TOPSIS-based comprehensive benefit evaluation method for the water-wind-light-hydrogen multi-energy complementary off-grid system comprises the following steps: S1, determining an evaluation object; s2, determining a construction principle of an evaluation index system; s3, determining a construction method of comprehensive benefit evaluation indexes of the water-wind-light-hydrogen storage multi-energy complementary off-grid system; s4, determining a multi-energy complementary off-network system comprehensive benefit multi-level index weighting method; and S5, comprehensive benefit evaluation result calculation and analysis are carried out based on TOPSIS. The invention provides a TOPSIS-based comprehensive benefit evaluation method for a water-wind-light-hydrogen multi-energy complementary off-grid system, and solves the problem of comprehensively considering the popularization and construction of the water-wind-light-hydrogen multi-energy complementary off-grid system.

The invention belongs to the technical field of off-grid inverter and battery management, and particularly relates to an off-grid inverter battery protection and charging control method and system based on impedance detection, and the method comprises the steps: collecting battery input parameters under two different load working conditions: no-load or light-load and on-load conditions; an Ohm law analytical algorithm is adopted, a corresponding relation model of the lithium battery remaining capacity SOC and the battery internal resistance is preset, the current actual internal resistance of the battery is obtained, the preset SOC-internal resistance corresponding relation model is input, and the current SOC value of the battery is obtained through reverse deduction; an inverter charging current adjusting threshold value is set in a grading mode, and a multi-dimensional risk early warning threshold value is set in a grading mode; and when the monitored numerical value exceeds a correspondingly set risk early warning threshold value, triggering a risk early warning signal of a corresponding grade and a matched disposal action, and carrying out full-process management and control of battery state real-time monitoring, charging current self-adaptive adjustment and risk early warning. Therefore, the problems of short service life, poor charging safety and the like of the battery in the prior art are solved.

According to the off-grid energy management method, the real-time state of charge (SOC) of an energy storage battery is compared with a preset high electric quantity threshold value and a preset low electric quantity threshold value, and a diesel engine priority mode set by a user and real-time load and power conditions are combined; and dynamically selecting an optimal solution from a plurality of preset operation conditions. Through multi-source cooperation and intelligent scheduling, start-stop and working modes of the photovoltaic module, the diesel engine module and the inverter module can be intelligently controlled, seamless switching and optimal distribution among different energy sources are realized, power supply continuity and economy are ensured, and the service life of energy storage equipment is effectively prolonged.

A modular utility system integrates clean power generation, thermal management, and security monitoring within a standardized shipping container format. The system comprises a generator set (70 kW-600 kW) configured for operation with multiple fuel sources including natural gas, propane, methane, or hydrogen, coupled to a water-fired absorption chiller utilizing waste heat recovery. A closed-circuit evaporative cooler enhances thermal efficiency without chemical additives. The system incorporates a 360-degree security camera and remote monitoring capabilities for tracking operational parameters. A power distribution panel (460V, 3-phase) supports both building power supply and electric vehicle charging stations. The modular architecture enables scalable deployment through dual-module configurations, with separate power generation and thermal management units. The system provides sustainable, off-grid power generation while maximizing energy efficiency through integrated waste heat utilization and advanced thermal management protocols.

The invention relates to the technical field of wireless communication, in particular to an off-network sparse Bayesian angle estimation method and system based on joint model and data driving. An array observation signal is obtained, an array manifold dictionary and an angle derivative matrix are constructed, and a sparse Bayesian signal model capable of representing off-grid offset is established. After the sparse prior precision, the noise precision and the off-grid gap are initialized, a deep expansion network composed of multiple cascade expansion layers is introduced, a posterior mean value and a posterior covariance are iteratively updated, and joint estimation of the sparse prior precision, the noise precision and the off-grid gap hyper-parameters is achieved. And constructing an angle power spectrum based on the updated posterior parameters, obtaining a high-resolution angle estimation result, further determining the actual angle of arrival and off-grid offset of the information source, and realizing high-precision and low-deviation DOA estimation. According to the invention, high-resolution, high-precision and high-stability angle estimation in a continuous angle domain is realized.

The invention relates to the technical field of off-grid renewable energy hydrogen production, and discloses an off-grid alkaline hydrogen production system and a power adaptive distribution and safety control method thereof, the off-grid alkaline hydrogen production system comprises a renewable energy power supply unit, a parallel electrolytic cell module, a gas-liquid treatment system and a main controller; in the Faraday hydrogen production mode, the bubble volume is compressed by adjusting the operation pressure so as to modulate the impedance characteristic of the electrolytic cell, and the energy efficiency is improved in cooperation with current control; and in the non-Faraday polarization hot standby mode, the voltage of the rectifier cabinet is controlled to be clamped to a non-gassing polarization interval, and liquid level plugging is constructed in the U-shaped communicating pipeline according to the fluid statics principle. The system is further provided with a transient buffering strategy based on the pneumatic capacity, and pressure attenuation is delayed through the gas dead zone volume when power is suddenly reduced. The problems of hydrogen production efficiency optimization, low-power safe hot standby and mechanical protection under wide power fluctuation are effectively solved.

The invention discloses a direct-current off-grid renewable energy hydrogen production energy management method and system, and relates to the technical field of renewable energy management, and the method comprises the steps: constructing a hydrogen production energy management module of a direct-current voltage network; carrying out load characteristic analysis, obtaining the energy demand of the hydrogen production facility, and identifying a high demand time period and a low demand time period; collecting wind power and sunlight data, and evaluating potential output capability of wind power generation and photovoltaic power generation; and determining a wind turbine, a photovoltaic panel and energy storage equipment based on an analysis result of the energy demand and the output capability, determining a hydrogen production operation mode, and performing energy management. According to the direct-current off-grid type renewable energy hydrogen production energy management method, the energy utilization efficiency is improved, energy waste in off-peak periods is reduced, adaptability and stability are enhanced, and different situations of energy peak and valley are dealt with. Energy storage and output strategies are optimized, operation cost is reduced, economic benefits are improved, and energy requirements are met.

The invention discloses an efficient energy storage test system and method based on multiple modes. Two energy storage converters, two battery cabins and a transformer are included. A power grid connection circuit comprises a breaking switch. The energy management system communicates with the energy storage converter, and controls and switches a power supply mode, a drag test mode and a peak clipping and valley filling mode; the two energy storage converters are dragged oppositely to realize internal energy circulation, so that expensive high-power external load equipment is omitted, the energy utilization rate is improved, and waste is avoided; the system integrates a plurality of modes such as off-grid / grid-connected twin trawling test, electricity supplement and peak load shifting and can be seamlessly switched, so that the test requirements can be met, economic benefits can be brought to factories, and the equipment utilization rate and the investment return can be improved; the grid-connected point is provided with an anti-countercurrent device to prevent reverse power transmission to the power grid, thereby solving the potential safety hazard of grid-connected test and ensuring stable operation of the power grid; a single-cabin single-branch structural design is adopted, the system architecture is clear, the layout is compact, maintenance and expansion are convenient, and the system is suitable for limited deployment space.

The invention relates to the technical field of renewable energy source hydrogen production, and discloses an off-grid alkaline electrolysis total hot standby method based on multi-source waste heat deep integrated recovery, which comprises the following steps: S1, constructing a frame which comprises an electrolytic cell array, a graded waste heat recovery loop, a phase change heat storage tank and an auxiliary and emergency assembly; s2, synchronously capturing multi-source waste heat of the system: starting a circulating power assembly of a graded waste heat recovery loop, and synchronously collecting process cooling waste heat and product gas waste heat generated in the operation process of the electrolytic cell array through the graded waste heat recovery loop; and S3, heat storage and cascade distribution. By constructing an independent closed type grading waste heat recovery loop, alkali liquor cooling waste heat in the process of operating an electrolytic cell captures sensible heat of high-temperature wet oxygen at an outlet of an oxygen separator through the waste heat recovery heat exchangers connected in parallel, direct loss of the two kinds of waste heat is avoided, external power or fuel does not need to be relied on for supplying energy to hot standby, and energy consumption in the hot standby stage is greatly reduced.

The invention discloses a multi-electrolytic cell power distribution method and device for an off-grid type wind-solar hydrogen production system. The method comprises the steps that a model of the off-grid type wind-solar hydrogen production system is established; establishing a system operation constraint condition; determining an optimization objective function; and an optimization algorithm is applied, and according to the model of the off-grid type wind and light hydrogen production system, the system operation constraint condition and the optimization target, an optimal power distribution scheme of each electrolytic cell is solved. By means of the scheme, the potential safety hazard of explosion possibly caused by too high hydrogen concentration in oxygen can be solved, it is ensured that the system operates within the safety range by controlling the operation power and duration, and the accident risk is reduced. Meanwhile, the power distribution strategy not only considers technical feasibility, but also pays more attention to economy, and is beneficial to improving the profitability of the whole system. In addition, on the premise of meeting various constraints, unstable wind energy and solar energy resources can be more effectively utilized for hydrogen production, and the absorption proportion of renewable energy sources is increased.

The application discloses an off-grid new energy hydrogen production starting control method, system, equipment and medium, relates to the technical field of new energy hydrogen production control and micro-grid operation management, and comprises the following steps: adopting energy storage zero step-up voltage control and anti-interference communication to establish bus voltage based on an off-grid system architecture; adjusting wind turbine output power based on a short-term wind speed prediction variable pitch power following strategy, adopting an improved NSGA-II multi-objective optimization algorithm to dynamically adjust the power distribution ratio of the wind turbine and the energy storage device in combination with the equipment health state factor, and optimizing the equipment power output path and response rate; adopting electrolytic cell pre-starting condition checking, power step-up and grid-connected transition step starting, cooperating with closed-loop temperature flow regulation and PID pressure management strategies to carry out electrolytic hydrogen production, and executing black start fallback and self-healing control. The method disclosed by the application realizes smooth construction of bus voltage through energy storage zero step-up voltage control, and effectively suppresses current impact in the starting process.

The invention provides an off-grid optical storage inverter system cooperative control method and system based on a multi-mode intelligent algorithm, and relates to the field of optical storage inversion, and the method comprises the steps: obtaining a hardware configuration demand, collecting multi-source data in real time, and carrying out the precise tracking of a phase through a phase locking algorithm, and obtaining a standardized control signal; photovoltaic voltage and current data, a battery state and illumination abrupt change environment parameters are obtained, photovoltaic tracking is carried out, battery management is carried out in combination with a fuzzy logic controller, and a cooperative control instruction is output; historical load data and a real-time state flag are obtained, a load demand prediction curve is generated through cloud model processing, a working mode program is driven to make a decision, and a seamless switching instruction is output; real-time monitoring data is processed through multi-algorithm fusion, and a closed-loop protection instruction is obtained in combination with convolutional neural network fault diagnosis and voice feedback. The method is used for solving the problems of low energy conversion efficiency, poor dynamic response speed and poor all-working-condition adaptability of off-grid optical storage.

The embodiment of the invention relates to an off-grid comprehensive energy supply system taking ammonia as an energy carrier. The off-grid comprehensive energy supply system comprises a power generation system and an ammonia synthesis system, wherein the power generation system comprises a main power generation module and a secondary power generation module, the main power generation module at least comprises a wind power generation module and a photovoltaic power generation module, the secondary power generation module at least comprises a nuclear energy power generation module and a biomass power generation module, and the power generation system is used for providing electric energy for the ammonia synthesis system; the ammonia synthesis system at least comprises one of the following devices: an electrochemical ammonia synthesis device and a Harberg method ammonia synthesis device, and the electrochemical ammonia synthesis device is a device which utilizes hydrogen and nitrogen as raw materials and utilizes lithium and quinone organic matters as electron transfer media to realize electrochemical synthesis reaction of ammonia; stable electric energy and heat energy supply is realized by integrating wind, light, core and biomass power generation processes, and is used as an energy source for ammonia preparation, and the prepared ammonia is easy to liquefy, convenient to transport and wide in application.

The invention discloses a plateau pasturing area power supply method and device based on an off-grid wind and light storage micro-grid, and relates to the technical field of off-grid micro-grids. Comprising the steps that regional characteristic data of a target plateau pasturing area are collected, off-grid wind-solar-storage micro-grid power supply equipment is arranged in the target plateau pasturing area based on the regional characteristic data, and the arranged off-grid wind-solar-storage micro-grid power supply equipment at least comprises a solar power generation device, a wind power generation device, a power storage device and a wind-solar complementary controller; in response to a power-on signal of the arranged off-grid wind-light storage micro-grid power supply equipment, collecting real-time environment information and historical power data of the target plateau pasturing area, and scheduling a wind-light complementary controller to optimize wind-light power generation information of the arranged off-grid wind-light storage micro-grid power supply equipment based on the real-time environment information and the historical power data; and controlling off-grid wind and light storage micro-grid power supply equipment to supply power to the target plateau pasturing area according to the optimized wind and light power generation information.

The invention relates to an off-grid hydrogen production system energy management scheduling method based on VMD-MPC, and relates to the field of new energy power generation energy management. According to the technical scheme, a low-frequency trend component and a high-frequency disturbance component in a power signal are stripped through variational mode decomposition VMD, a layered optimization framework of day-ahead global planning-intraday dynamic correction is constructed, and the pain point that an existing single time scale model lags in response to dynamic change of a system is effectively solved. In addition, according to the scheme, the input signal quality is optimized through VMD preprocessing, and the input stability of the model predictive control MPC scheduling model is remarkably improved. Besides, a deviation dynamic self-adaptive penalty mechanism is introduced into an intra-day rolling optimization link, so that a scheduling strategy can automatically adjust the tracking intensity according to the actual fluctuation amplitude and flexibly adapt to the change of working conditions, and the anti-interference ability of the system to deal with the uncertainty of wind and light output and load is greatly enhanced.

This invention relates to an interactive method and system for energy storage systems based on a voice-controlled model. The method includes: receiving user voice commands, performing voice recognition and semantic parsing, and extracting control intentions and parameters; matching or generating system operation strategies based on the parsing results; and decomposing the strategies into device control commands and issuing them for execution. The system includes modules for voice input, processing, escape extraction, strategy escape, strategy decomposition, and output, supporting multilingual recognition, local offline operation, strategy customization, and security verification. This invention lowers the barrier to entry for new energy storage systems, improves interactive intelligence and security, and is suitable for residential, commercial, off-grid, and mobile energy storage scenarios.

The application relates to a hybrid inverter two-way battery off-grid power distribution method, which is applied to the field of energy storage system control and comprises the following steps: judging the working mode of a two-way battery, and calculating the total effective capacity of the two-way battery according to the working mode; calculating a current distribution proportion coefficient of the two-way battery according to the total effective capacity and the real-time acquired terminal voltage of the two-way battery; and distributing the total current reference value of the real-time acquired bus voltage to the two-way battery according to the current distribution proportion coefficient, so as to realize off-grid power distribution of the two-way battery. The application has the technical effect that the total power of the two-way battery can be accurately and quickly distributed in an off-grid scene, and the mutation of the load power demand can be matched in real time.

The invention relates to an off-grid new energy storage system control method and device and a new energy storage and coal chemical coupling system. The method comprises the steps that the real-time charge state of an energy storage system is acquired; determining an operation control strategy according to the real-time charge state and a preset operation grade threshold value of the energy storage unit; operation of at least one of the new energy power generation system, the hydrogen production system, the heating and heat storage system and the energy storage system is controlled according to the operation control strategy; on the basis that the original electric energy quality of coal chemical enterprises is not affected, technical support can be provided for the coal chemical enterprises to explore an energy-saving and carbon-reducing mode, efficient, clean, economical and safe energy production and utilization can be achieved, and wide application prospects are achieved.

The invention provides an off-grid ReP2A integrated system topology capacity collaborative planning method, and relates to the technical field of renewable energy source hydrogen production and synthesis ammonia, and the method comprises the steps: constructing a mixed integer second-order cone programming model covering a power network, energy storage, hydrogen production, hydrogen storage, hydrogen transmission and synthesis ammonia full-chain coupling constraint; wherein the mixed integer second-order cone programming model takes the minimum annual average comprehensive cost of the system as a target to collaboratively optimize equipment capacity configuration, power transmission and hydrogen transmission network topology and a system operation strategy; and solving the mixed integer second-order cone programming model by adopting a branch and bound Benders decomposition algorithm, and outputting a programming construction scheme. The scheme can solve the problems of high comprehensive cost and low operation efficiency of the system.

The invention relates to the technical field of energy scheduling, in particular to a scheduling method and system for an off-grid wind-solar hydrogen production and biomass gasification methanol production system, and the method comprises the steps: obtaining system prediction data; judging whether an extreme weather event occurs or not based on the environment temperature predicted value; dynamically calculating the thermal power for maintaining the lowest safe activity of the synthetic tower catalyst; taking the maximum methanol output value as a scheduling target, constructing a target function, and generating an optimal scheduling plan of a specific period in the future; executing the optimal scheduling plan; according to the method, a prediction-based dynamic guaranteed threshold model is introduced; according to the method, the future environment temperature is analyzed in real time, a catalyst activity attenuation kinetic model is combined, and the thermal power required for maintaining the lowest safe activity of the synthetic tower catalyst is dynamically calculated; according to the method, the energy scheduling decision is improved from passive response to active defense, absolute safety of chemical production core equipment under extreme conditions is ensured, and huge loss caused by non-planned shutdown is effectively avoided.

The present invention provides an off-grid power distribution system capable of reliably performing earth leakage protection in an off-grid device having a self-power supply, the off-grid power distribution system having a power distribution system for distributing power from a self-power supply independent of a commercial power supply to a socket inside a structure disconnected from the commercial power supply, the power distribution system being provided with a main circuit breaker. The off-grid power distribution system is characterized in that the socket is composed of a socket with an electric leakage breaker.

The present invention describes a photovoltaic (PV) generator ideally suited for off-grid and remote areas, having a substantially upright structure and comprising a cabinet adapted for grounding on which a plurality of vertically disposed PV panels are mounted. The cabinet accommodates a control circuit for collecting, storing and delivering electrical energy generated by the PV panel. And redundant energy is accumulated in the battery pack and is conveyed as required when the PV panel is insufficient in power supply. The generator is optimized to rated power, ideally for off-grid life (average daily output of 200 Wh / day) and for maintaining home use during seasonal minimum values of solar radiation, and is provided with sufficient PV energy harvesting area to deliver average daily rated power.