39 results about "Supercapacitor energy storage" patented technology

The invention relates to the technical field of power system control, and discloses a photovoltaic energy storage primary frequency modulation cooperative control system based on output prediction and SOC balance, which comprises a photovoltaic array unit, a photovoltaic inverter, a sodium ion super capacitor energy storage unit, a bidirectional DC / DC converter and a cooperative controller. The cooperative controller is configured to identify an output trend by using photovoltaic power prediction data, and dynamically adjust an energy storage SOC reference anchor value; a source storage virtual impedance model considering the real-time efficiency characteristic of the sodium ion super capacitor is constructed, and the primary frequency modulation power demand is dynamically allocated. When the state of the energy storage unit deteriorates, the power compensation amount is calculated through photovoltaic load shedding sliding mode offset control, and the closed-loop target of the photovoltaic inverter is corrected to share the frequency modulation task. And after the frequency modulation is finished, controlling the photovoltaic power to recover by adopting an asymmetric step length. The method solves the problems that the energy storage standby is not matched and the response capability is reduced under the extreme working condition, and improves the frequency modulation stability of the system.

The method is applied to the fields of train regenerative braking energy utilization, stray current and rail potential treatment and the like in electrified rail transit, especially urban rail transit. The invention provides a direct-current traction power supply system capable of reducing the energy storage capacity of a super capacitor of urban rail transit, which is combined with a super capacitor energy storage device of the urban rail transit and supplies power to a power electronic device for treating stray current and rail potential by utilizing regenerative braking energy of a train. The super-capacitor energy storage device has the following advantages that on one hand, the energy storage capacity of the super-capacitor bank in the super-capacitor energy storage device between train braking and traction can be reduced, and the utilization efficiency of regenerative braking energy stored by the super-capacitor bank is improved; on the other hand, the problems of stray current, rail potential and the like in the system can be solved from the source, and the power supply distance of a traction substation is remarkably increased. Therefore, the direct-current traction power supply system is of great significance to green and safe operation of urban rail transit.

1. Name of the product in this design: Energy Storage Unit (CTPS-020C). 2. Purpose of this design: Supercapacitor energy storage device for wireless power supply systems. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a three-phase grid-connected system based on hybrid energy storage complementation of a lithium battery and a super capacitor. Comprising a hybrid energy storage system unit, a control unit of a bidirectional energy storage circuit, a three-phase bridge-type grid-connected inverter and a control unit of the three-phase bridge-type grid-connected inverter, the hybrid energy storage system unit comprises a lithium battery energy storage unit and a super capacitor energy storage unit, and the lithium battery energy storage unit and the super capacitor energy storage unit are connected with the direct current bus through a bidirectional DC / DC converter; the control unit of the bidirectional energy storage circuit is used for obtaining reference power required to be provided by the lithium battery and the super capacitor through power distribution, taking a reference power signal as an input signal, and forming a control signal of a switching device through signal processing and conversion, so that the energy storage equipment is charged and discharged according to the reference power; the three-phase bridge-type grid-connected inverter and the control unit thereof are used for controlling the three-phase bridge-type inverter through PWM pulse signals. The stability and reliability of the power grid can be improved, and the operation cost of the power system is reduced.

This invention provides a firmware upgrade system and method that supports real-time status monitoring and is resistant to power outages, relating to the field of industrial Internet of Things (IoT) technology. It includes a storage module, a power outage protection module, and a processing module. The storage module comprises an on-chip FLASH memory and an off-chip NOR FLASH memory. The on-chip FLASH memory is divided into a BOOT area, an APP area, and an upgrade parameter storage area. The off-chip NOR FLASH memory is divided into BANK1 and BANK2 areas. This invention provides data redundancy for firmware upgrades through a dual-zone backup mechanism in the storage module. The hardware power outage detection and supercapacitor energy storage design of the power outage protection module prevent data loss and storage structure damage during power outages at the hardware level. The processing module's precise data recording and recovery strategy ensures accurate recovery and upgrade after a power outage.

The application discloses a kind of distributed multi-mode self-powered trigger sensors for intelligent fluid heating system, belong to fluid heating intelligent control technical field.The sensor is arranged in the outer wall of fluid pipe behind each water point faucet, and the energy is generated spontaneously using the energy of fluid in pipe and environment, only detects hot water enable state and sends unique water point ID to central control unit, does not collect, does not transmit water temperature, flow and any data.The sensor includes TEG thermoelectric generator unit, button type supercapacitor energy storage unit, low-power BLE 5.0 wireless communication unit, heat-sensitive trigger unit, can be adapted to multiple self-powered modes, only wakes up when triggered, completely powered off in non-trigger state, free wiring, maintenance-free, adapt to all kinds of fluid heating equipment, with strong practicability and landing.

The invention provides a vehicle-mounted multi-source self-power-generation power supply system and a multi-source power supply method thereof. Comprising the steps that S1, a micro piezoelectric power generation module is arranged in a micro vehicle chassis or a vehicle body; s2, micro wind power generation units are installed at the vehicle air inlet grille and the streamline position of the vehicle roof; s3, setting a dual-mode intelligent power supply management system, wherein the dual-mode intelligent power supply management system comprises a super-capacitor energy storage module and a lithium polymer battery pack; s4, adopting a voltage detection circuit to monitor the voltage states of the super capacitor energy storage module and the lithium polymer battery pack in real time; s5, a light energy collecting film is arranged in the micro space in the vehicle and attached to the inner side of a vehicle window or the surface of an instrument panel, and a lighting source in the vehicle is converted into supplementary electric energy; the system has the advantages that efficient cooperative power supply of multiple devices in a micro space is achieved, and the use convenience and the energy utilization efficiency of the electronic devices in the vehicle are remarkably improved.

The present application relates to the technical field of nanocomposite materials, and particularly relates to a preparation method of two-dimensional multi-stage pore MOF material with self-repairing capability and application thereof.The method of the present application is as follows: including the following steps, using an organic ligand, which can also be 2,6-diaminopyridine as a doping ligand to increase the amino functional groups on the MOF body, using an amphiphilic block copolymer as a template agent, using GO as a substrate to induce metal ions to form MOF material, washing off the template agent, and finally obtaining two-dimensional mesoporous MOF material.Grafting UPY-NCO molecules on the hydroxyl or amino end of the MOF material, and then forming dimers through four hydrogen bonds to obtain a crosslinked network.The preparation method of the present application is novel, the MOF material prepared by using the method has high cycle stability, and after high-strength use, the hydrogen bonds can be preferentially sacrificed, and the hydrogen bonds can repair themselves, which greatly improves the service life of the material and improves the electrochemical property.The material can be used as a supercapacitor energy storage electrode material.

The invention discloses a modular high-capacity test power supply system, method and equipment and a storage medium, and relates to the technical field of test power supplies, a modular super-capacitor energy storage module adopts high-density direct-current energy storage, the size is small, more energy is stored, the capacity can be flexibly expanded through the modular design, and the limitation of the traditional energy storage capacity is broken through; meanwhile, the input and charging module can efficiently convert low-voltage commercial power into direct current and continuously charge the energy storage module, and the power conversion and filtering module is responsible for converting the direct current into alternating current in a high-quality mode and filtering harmonic waves, so that stable and high-quality output is guaranteed, and the large-capacity test requirement is met; in addition, the super capacitor is charged and discharged based on electric field force, the speed is extremely high, power can be rapidly adjusted, and the problem of slow response of traditional energy storage is solved. In addition, the control module monitors and coordinates all the modules in real time, quickly receives feedback, sends instructions according to strategies and requirements, and quickly coordinates all the modules when the power changes, so that quick response and stable operation of the system are realized, and smooth development of the test is ensured.

This invention relates to the field of nanocomposite materials technology, specifically to a method for improving the cycling stability of MOF electrode materials and its application. The method of this invention uses aromatic hydrocarbons with hydroxyl or amino groups as organic ligands and MOFs that regulate the ligands. UPy-NCO molecules are grafted onto the hydroxyl or amino ends of the MOF material, and then dimers are formed through quadruple hydrogen bonds to obtain a cross-linked network. The preparation method disclosed in this invention is novel, and the MOF material prepared using this method exhibits high cycling stability, which can greatly improve the material's lifespan. This material can be used as an energy storage electrode material for supercapacitors, exhibiting excellent electrochemical performance and long service life.

The application provides a peak load intelligent adjustment method and system for a supercapacitor energy storage system of a computing center, relates to the technical field of energy management, and comprises the following steps: a coupling decision mechanism is constructed between a task scheduling layer and an energy storage scheduling layer, a plurality of candidate task execution time sequences are generated based on to-be-executed task information, a charging and discharging time window is correspondingly decomposed from a load peak value period, charging and discharging power and a time sequence are allocated, residual peak power is calculated and an optimal scheme is selected, and real-time monitoring and dynamic adjustment are performed, so that the peak load of the computing center is effectively reduced, the energy utilization efficiency is improved, and power grid fluctuation is reduced.

The application relates to an anti-vibration super capacitor energy storage module, which comprises a box body provided with a containing cavity, a fixing assembly provided with two single-sided clamps and at least one double-sided clamp, the at least one double-sided clamp being arranged between the two single-sided clamps, the single-sided clamps and the double-sided clamp being arranged in parallel in the containing cavity, at least one super capacitor monomer being fixed between each single-sided clamp and the double-sided clamp in the direction of axial extension, and a plurality of supporting columns being arranged through the double-sided clamp and fixed to the side wall of the box body after abutting against the single-sided clamps at both ends. The application has the effects of enhancing the anti-vibration performance of the super capacitor energy storage module, guaranteeing the stability and reliability of the super capacitor energy storage module and facilitating the installation and dismounting of the super capacitor energy storage module.

The invention discloses an elevator comprehensive energy-saving system based on a lithium ion capacitor. Comprising a target elevator controller, a three-phase electric quantity metering circuit, a three-phase SPWM shaping and bidirectional filtering circuit, a six-tube three-phase bidirectional ACDC conversion circuit, a three-phase phase detection circuit, a multiplication phase locking circuit, a high-voltage direct-current filtering circuit, a four-tube H-bridge high-voltage bidirectional switch, a high-voltage high-frequency energy storage inductor, a lithium ion capacitor energy storage unit and a lithium ion capacitor equalization and protection circuit. The system comprises a digital signal processor (DSP) signal processing and control core circuit, a CAN communication circuit, a display circuit, an emergency leveling signal interface circuit, node voltage, current and temperature detection circuits and a system power supply. Compared with an existing energy feedback type elevator energy-saving system, interference to a power grid is small, and the pulse interference-free level can be achieved. Compared with an existing super-capacitor energy storage type elevator energy recovery system, the cost is lower, and industrial popularization is more facilitated.

The present disclosure envisages a hybrid energy storage system (HESS) for power management of a microgrid. The system includes a plurality of renewable energy sources (RES), a plurality of power converters, a DC bus and a power management controller. Each RES is configured to generate a current IRES. Each RES is connected to a power converter. Each power converter generates a DC voltage Vdc from the current IRES. The DC bus is connected to the plurality of power converters. The DC bus receives the DC voltage Vdc. The power management controller controls a battery energy storage system (BESS) and a supercapacitor energy storage system (SCSS). The BESS includes a battery which is connected to receive the DC voltage Vdc and generate a battery current ibatt. The SCSS includes a supercapacitor which is connected to receive the DC voltage Vdc and generate a supercapacitor current iSC.

The invention discloses a dynamic modeling method for a photovoltaic field containing super capacitor energy storage, and belongs to the technical field of power generation, power transformation or power distribution. According to the method, firstly, system reference system coordinates are selected, then coordinate conversion is carried out on other parts, on the basis, small signal models of a grid-building inverter and a grid-following inverter are established, equivalent models of a super capacitor and a receiving-end power grid are established, then all the parts are connected through main line modeling, and the system reference system coordinates are obtained. Therefore, the modeling method of the multivariable coupling dynamic model with the built-in super-capacitor energy storage in the photovoltaic field station is provided. Compared with a traditional modeling method, two types of inverter control modes, a super capacitor and a receiving end power grid are all incorporated into modeling, and the influence of multivariable factors such as power grid frequency, voltage, power fluctuation, power grid strength, photovoltaic power station operation characteristics, super capacitor configuration, inverter control modes and parameters on system stability can be considered at the same time.

The utility model discloses a kind of electrical access structure of hybrid energy storage system and thermal power plant generating unit frequency modulation system, including generating unit high plant transformer section, generating unit public transformer section, hybrid energy storage system is respectively connected generating unit high plant transformer section and generating unit public transformer section;Hybrid energy storage system includes lithium iron phosphate battery energy storage system and supercapacitor energy storage system, lithium iron phosphate battery energy storage system includes lithium iron phosphate battery energy storage system one and lithium iron phosphate battery energy storage system two;Generating unit high plant transformer section includes first generating unit high plant transformer section and second generating unit high plant transformer section, and first generating unit high plant transformer section includes generating unit high plant transformer IA section and generating unit high plant transformer IB section;Second generating unit high plant transformer section includes generating unit high plant transformer IIA section and generating unit high plant transformer IIB section;Generating unit public transformer section includes generating unit public transformer A section and generating unit public transformer B section;First generating unit high plant transformer section and generating unit public transformer A section are connected, and second generating unit high plant transformer section is connected with generating unit public transformer B section.

The invention discloses an AC / DC hybrid microgrid energy management system based on power prediction. The system comprises a data acquisition and state estimation module, a power prediction module, a power deviation decomposition module, a hybrid energy storage execution unit, a labor division allocation and life-friendly scheduling module, an online correction module and an instruction issuing and closed loop checking module. The system performs decomposition based on the net power deviation of prediction output, distributes low-frequency power components to a battery energy storage unit, distributes medium-high-frequency power components to a super-capacitor energy storage unit, distributes high-frequency power components to an SMES unit, and distributes high-frequency power components to a super-capacitor energy storage unit. And a battery life cost item and life constraint of temperature-cycle-rate three-factor degradation mapping are introduced into scheduling optimization. Through the above scheme, plan tracking errors can be reduced, AC / DC bus out-of-limit risks can be suppressed, fast disturbance support capability can be improved, energy storage life friendly scheduling can be realized, and the method is suitable for park type source network load storage, station area DC load and grid-connected / isolated island operation scenes containing charging piles.

This invention relates to a fuzzy adaptive inertia control method for a supercapacitor-based doubly-fed induction generator (DFIG) wind turbine, belonging to the field of power systems. The invention addresses the problems in existing wind-storage joint frequency regulation control methods, such as poor adaptability due to fixed parameters, susceptibility to overcharging and over-discharging due to lack of consideration for energy storage state-of-charge constraints, and the lack of a coordinated control mechanism for frequency support and voltage stability. The invention includes: establishing a doubly-fed induction generator (DFIG) and supercapacitor energy storage system; establishing a mathematical model of virtual rotational inertia and inertia coefficient; designing a fuzzy logic controller using frequency deviation, frequency change rate, DC bus voltage, and SOC as inputs, outputting inertia coefficient correction, voltage deviation coefficient correction, and energy storage output correction coefficient; updating the virtual rotational inertia and voltage compensation to synthesize a composite power command; and when the SOC enters the danger zone, the supercapacitor is deactivated, and the DFIG switches to VSG mode to compensate for active power deficit.

This application relates to a power control method, apparatus, device, medium, and program product for a hybrid power supply system. The method includes: acquiring real-time operating status data of the hybrid power supply system; calculating instantaneous load power data and the state of charge (SOC) of a supercapacitor based on the operating status data; generating a load power prediction sequence based on the instantaneous load power data using a power prediction algorithm; determining a first optimal power command for the AC-DC converter and a second optimal power command for the supercapacitor energy storage unit using a model predictive control algorithm, based on the load power prediction sequence, the SOC of the supercapacitor, and an efficiency model of the AC-DC converter power supply, combined with preset constraints; and performing power control on the AC-DC converter power supply and the supercapacitor energy storage unit according to the first and second optimal power commands, respectively. This method can achieve reasonable power allocation and improve the overall efficiency of the hybrid power supply system.

An effective capacity estimation method and system for super capacitor energy storage systems are provided. The method includes: establishing a nonlinear electrical model of supercapacitor cell and an equivalent electrical model of a supercapacitor system; obtaining the first test data by charging the supercapacitor cell; based on the first test data, setting the initial value of parameters of the nonlinear electrical model of the supercapacitor cell by a preset algorithm; using a least-square method to identify the parameters of the nonlinear electrical model of the supercapacitor cell; obtaining electrical parameters of the equivalent electrical model of the supercapacitor system except the connection resistance parameters, carrying out a charging test of the supercapacitor system to obtain the connection resistance parameters, and estimating an effective capacity of the supercapacitor energy storage system based on the equivalent electrical model of the supercapacitor system after parameter identification.

A wind turbine generator (100a-e) comprising an electric generator (102) and an apparatus (104a-e) for electric power conversion, wherein the apparatus (104a-e) comprises: a first power converter (106) for converting AC power from the electric generator (102) to DC power; a second power converter (108) for converting DC power from the first power converter (106) to AC power to be provided to an electric power grid (110); a DC link (112) comprising a positive rail (114) and a negative rail (116) connecting the first power converter (106) to the second power converter (118); and an energy storage arrangement (118a-d) comprising multiple supercapacitors (120) connected or connectable to the DC link (112) so as to support the operation of one or more of the first and second power converters (106, 108). The energy storage arrangement (118a-d) comprises one or more DC-to-DC converters (122) for connecting one or more of the supercapacitors (122) of the energy storage arrangement (118a-d) to the DC link (112).

A hypercapacitor energy storage system or device facilitates fast charging, stable energy retention, high energy to weight storage and the like. The hypercapacitor comprises an ultracapacitor in electrical connection with an energy retainer which may comprise a battery, a battery field, a standard capacitor and / or the like. The electrical connection between the ultracapacitor and energy retainer may stabilize the energy retention of the hypercapacitor and provide for long-term energy storage and prevent self-discharge. The hypercapacitor may be electrically couplable to an energy source such as the utility grid via a low voltage outlet (e.g., 110V or 220V) or other charging system and may undergo fast charging. The hypercapacitor may be electrically couplable to and / or integrated with various systems or devices requiring energy storage and / or usage and may provide energy thereto.

The invention belongs to the field of oil drilling platform electric power system control, and provides a generator group and hybrid energy storage cooperative control method and system for a drilling platform, and the method comprises the steps: determining an area of a current state matrix and the lowest safe operation number corresponding to a current working condition; if the current actual operation unit number is smaller than or equal to the lowest safe operation unit number corresponding to the current working condition, safe locking is triggered, and control is conducted according to the control strategy of the area of the current state matrix; otherwise, the unit reduction operation is executed; monitoring the load power increment of the common connection point of the power supply network in real time, and if the load power increment exceeds a power abrupt change threshold value, discharging by the supercapacitor energy storage system; if the duration of the load power increment exceeds the duration threshold, re-determining the area of the updated state matrix, and performing coordination control based on the control strategy of the area of the updated state matrix; the problems that in a traditional scheme, energy storage response is delayed, the cooperation depth is insufficient, and safety and economy are unbalanced are solved.

This invention provides a cascaded controlled current source system based on supercapacitor energy storage, relating to the field of current source technology. The system includes: a three-phase NPC three-level rectifier module; a BUCK buck converter; a dual-tube parallel H-bridge inverter module; a current sampling unit located on the secondary side of the current-boosting transformer for real-time acquisition of the current flowing through the fuse under test; and an inverter-side proportional resonant controller. The input terminal of the inverter-side proportional resonant controller is connected to the output terminal of the current sampling unit to receive the error between the feedback current and the reference current command. The output terminal is connected to the drive terminal of the dual-tube parallel H-bridge inverter module. The proportional resonant controller has infinite gain at the fundamental frequency to ensure that the output current tracks the reference command without steady-state error. This invention can reduce grid capacity requirements while achieving a high-precision constant current control for a large current source.

The invention provides a computing power center super capacitor energy storage system peak load intelligent adjustment method and system, and relates to the technical field of energy management, and the method comprises the steps: building a coupling decision mechanism between a task scheduling layer and an energy storage scheduling layer, and generating a plurality of candidate task execution time sequences based on to-be-executed task information, the method comprises the following steps: correspondingly decomposing a load peak time period into a charging and discharging time window, distributing charging and discharging power and a time sequence, calculating residual peak power, selecting an optimal scheme, monitoring in real time and dynamically adjusting, effectively reducing the peak load of a computing power center, improving the energy utilization efficiency and reducing the fluctuation of a power grid.

The application provides a super capacitor module applied to the super capacitor energy storage technical field, wherein the super capacitor module comprises a mounting shell, a cell module, a connecting strip assembly, a lower pouring sealant layer and an upper pouring sealant layer; the mounting shell defines a containing chamber with an upper end opening; the cell module is received from the upper end opening and positioned in the containing chamber; the connecting strip assembly is located at the top end of the cell module and used for connecting electrodes in the cell module; the lower pouring sealant layer is solidified in the containing chamber and extends in the thickness direction from the bottom of the containing chamber to at least the bottom end of the cell module; the upper pouring sealant layer is solidified in the containing chamber and extends in the thickness direction from the top of the lower pouring sealant layer to cover the whole cell module and expose the top connecting strip assembly; the thermal conductivity coefficients of the upper and lower pouring sealant layers are both not more than 0.2 W / (m*K); the thermal conductivity coefficient of the upper pouring sealant layer is lower than that of the lower pouring sealant layer; and the super capacitor module can solve the influence of cell thermal runaway on adjacent cells.

This invention discloses an elevator variable frequency energy-saving control system and method based on AI and supercapacitors, belonging to the field of elevator intelligent control and energy-saving technology. The system includes: an AI intelligent control unit with a built-in LSTM load prediction model; a supercapacitor energy storage module connected in series to the DC bus of the variable frequency drive module; a variable frequency drive module adapted for retrofit units in older elevators without variable frequency capabilities and original equipment units in existing variable frequency elevators; and an operation data acquisition module. This invention collects real-time operating condition data such as load and speed, uses an AI model to predict load trends, dynamically adjusts variable frequency parameters, and coordinates the charging and discharging of the supercapacitor: recovering regenerated energy during braking or light-load downward movement, and releasing energy to assist power supply during heavy-load upward movement or startup. The system adopts a non-intrusive connection, without altering the original main control logic. The measured comprehensive energy saving rate reaches 25%–41%, reducing grid impact, compatible with both new and old elevators, with low retrofit costs and a short payback period.

This invention discloses a supercapacitor energy storage unit structure based on a half-bridge MMC module, relating to the field of power electronic converter and energy storage technology. It includes a vertically layered supercapacitor module string and a half-bridge MMC module arrangement layer. The supercapacitor module string comprises an upper frame and several series-connected supercapacitor modules installed inside the upper frame. The half-bridge MMC module arrangement layer comprises a lower frame, half-bridge MMC modules installed inside the lower frame, and an interface device. The upper and lower frames are fixedly connected. The interface device electrically connects the several series-connected supercapacitor modules to the half-bridge MMC modules. This invention, by constructing a cabinet-style structure for a supercapacitor energy storage unit based on a half-bridge MMC module, and through an integrated, regionally-oriented layout design, achieves close integration of the half-bridge MMC module, supercapacitors, and interface device, improving energy transmission efficiency, effectively optimizing the internal electromagnetic environment of the unit, and reducing the risk of electromagnetic interference.

This invention discloses a self-powered intelligent pressure cooker based on multimodal energy harvesting, belonging to the field of energy-saving intelligent kitchen cookware technology. The device includes a pressure cooker body, a sealed pressure-bearing component, a thermoelectric power generation module, a pressure differential piezoelectric power generation module, a steam micro-turbine power generation module, an energy integration management unit, a temperature acquisition sensor, a pressure acquisition sensor, and a low-power digital display module. The thermoelectric power generation relies on the temperature difference between the high temperature at the bottom of the pot and the low temperature of the environment to generate electricity; the pressure differential power generation utilizes the pressure pulsation deformation of the steam inside the pot to generate electricity; and the steam kinetic energy generation relies on the depressurization and exhaust to drive the micro-turbine generator set for energy replenishment. After rectification, filtering, supercapacitor energy storage, and power supply voltage regulation and distribution, the three power sources are self-powered by the high-precision temperature and pressure sensors and the digital display unit throughout the process, without the need for external mains power or battery replacement. It is preferably equipped with a low-power E-ink display, which can be expanded to include real-time video preview inside the pot and wireless data upload when there is excess energy; it solves the industry pain points of traditional smart pressure cookers that rely on power supply / battery, have limited battery life, and are cumbersome to install and disassemble for power supply. It also has the advantages of energy saving and environmental protection, pressure resistance and safety, real-time accurate monitoring, and all-weather maintenance-free operation, making it suitable for both household and commercial high-pressure cooking scenarios.

The invention provides a coal mine underground electromechanical equipment super-capacitor energy storage safety protection method and system, and relates to the technical field of super-capacitor energy storage safety protection, and the method comprises the steps: carrying out the combined analysis of the operation state of coal mine underground electromechanical equipment and the electrical state parameters of a super-capacitor energy storage unit through a time domain and a frequency domain, and recognizing the performance degradation root cause; performing segmented evaluation on the residual energy, and determining a safe recovery interval and a forced isolation interval; executing energy transfer or cutting off a charging and discharging path; constructing a ternary power supply topological relation to reconstruct a power supply path; and generating a switching instruction and a derating protection parameter. According to the method, the safe operation level of the underground super-capacitor energy storage unit is improved, and the potential risk is reduced.