CN205377391U - Be applied to high voltage insulator parameter monitoring system's mixed energy storage formula photovoltaic power - Google Patents

Be applied to high voltage insulator parameter monitoring system's mixed energy storage formula photovoltaic power Download PDF

Info

Publication number
CN205377391U
CN205377391U CN201620126794.0U CN201620126794U CN205377391U CN 205377391 U CN205377391 U CN 205377391U CN 201620126794 U CN201620126794 U CN 201620126794U CN 205377391 U CN205377391 U CN 205377391U
Authority
CN
China
Prior art keywords
energy storage
power
bus
energy
ultracapacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201620126794.0U
Other languages
Chinese (zh)
Inventor
段树华
李华柏
Original Assignee
段树华
李华柏
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 段树华, 李华柏 filed Critical 段树华
Priority to CN201620126794.0U priority Critical patent/CN205377391U/en
Application granted granted Critical
Publication of CN205377391U publication Critical patent/CN205377391U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

Abstract

(B /) the utility model relates to a mix energy storage formula photovoltaic power generation power of being applied to high voltage insulator parameter monitoring system. Photovoltaic power comprises photovoltaic cell, one -way DCDC boost converter, two -way DCDC converter, mixed energy storage unit and energy the control unit. The dc bus is delivered to to the direct current that photovoltaic cell sent behind the boost converter. Adopt ultracapacitor system and the mixed energy storage of battery, ultracapacitor system is connected to the dc bus through two -way DCDC converter 1, and the battery is connected to the dc bus through two -way DCDC converter 2, and ultracapacitor system carries out the energy buffering with the battery through the inductor. Mix that the energy storage unit is can full play ultracapacitor system power density big, the circulation charge -discharge is longe -lived yu hold the characteristics that battery power density is big, has increased energy storage system's power, furthest has realized the uninterrupted power supply. This photovoltaic power has simple structure, nimble, high, the non -maintaining advantage of energy utilization of control.

Description

A kind of hybrid energy-storing formula photo-voltaic power supply being applied to high-tension insulator parameter monitoring system
Technical field
This utility model patent relates to a kind of photovoltaic generation power supply being applied to High-Voltage Insulation subparameter on-line detecting system.
Background technology
High-tension insulator leakage current parameter on-line detecting system assesses the running status of supply line's mesohigh insulator exactly mainly through on-line checking leakage current virtual value and the pulse frequency.In order to realize the uninterrupted on-line monitoring of the state parameter of high-tension insulator, it is necessary to electric current driver, isolation sampling and Signal acquiring and processing module uninterrupted power supply.Owing to monitoring sensor is arranged on shaft tower with Signal acquiring and processing module, it is impossible to use normal power supplies.Moreover, owing to being operated on field and high-tension line, power module needs non-maintaining for a long time, therefore the reliability of power supply is proposed significantly high requirement.Develop power module functional, sufficiently stable and be applied to transmission line status parameter online system there is important practice significance and using value.
A kind of brand-new hybrid energy-storing formula photovoltaic generation power supply of this utility model Patent design, adopts ultracapacitor and accumulator hybrid energy-storing, adds the power of energy-storage system, farthest achieve uninterrupted power supply.There is simple in construction, control advantage flexible, that capacity usage ratio is high, non-maintaining.This photovoltaic generation power supply can be used for the power module of High-Voltage Insulation subparameter on-line detecting system.
Summary of the invention
The photovoltaic generation power supply of this utility model Patent design is made up of photovoltaic cell, DC/DCboost changer, two-way DC/DC changer, hybrid energy-storing unit and power control unit.Energy-storage units is made up of accumulator and ultracapacitor, and ultracapacitor is connected to dc bus through two-way DC/DC changer 1, and accumulator is connected to dc bus through two-way DC/DC changer 2.Ultracapacitor and accumulator carry out energy snubber by the inducer of respective changer.Hybrid energy-storing unit has given full play to the feature that ultracapacitor power density is big, cycle charge discharge electric life length is big with storage battery energy density, adds the power of energy-storage system, farthest achieves uninterrupted power supply.
The unidirectional current that photovoltaic cell sends delivers to dc bus after boost changer, and boost changer works in maximum power control pattern.According to the output of photovoltaic cell under different illumination intensity, control unit realizes impedance matching by regulating the dutycycle change load equivalent impedance of boost changer, it is achieved the maximum power output of photovoltaic cell
Power control unit is the control core of system, the mode of operation of each changer is determined by detecting battery tension super-capacitor voltage and DC bus-bar voltage, and send the logic control signal dutycycle to power device and be modulated, it is achieved the reasonable disposition of each energy source.
Below in conjunction with drawings and embodiments, this utility model patent is further illustrated.
Accompanying drawing explanation
Fig. 1 is the structure of hybrid energy-storing formula photovoltaic generation power supply, and DCBus is dc bus.Fig. 2 is the electrical schematic diagram of hybrid energy-storing formula photovoltaic generation power supply, and B1 is accumulator, and B2 is photovoltaic cell, and C is ultracapacitor, L1、L2、L3For buffer inductor.
Detailed description of the invention
In order to realize the maximum service life (MSL) of the power supply stable power-supplying to system and accumulator, single-phase DC/DCboost changer works in maximum power control pattern, according to the output of photovoltaic cell under different illumination intensity, control unit can change load equivalent impedance by the dutycycle of adjustment boost changer and realize impedance matching, it is achieved the maximum power output of photovoltaic cell.Two reversible transducers may operate in buck and boost both of which, it is possible to controls flow direction and the watt level of energy.In energy-storage system, super capacitor plays energy storage and realizes the effect of dc bus voltage stabilizing, owing to super capacitor discharge and recharge is rapid and cycle charge discharge electric life is long, so when the output power from photovoltaic cells fluctuates, first allow super capacitor action realize the energy balance, reduce the cycle charging number of times of accumulator.The energy density of accumulator is relatively big, as super capacitor fully charged/be discharged the energy storage device of rear discharge and recharge, act primarily as the effect of energy storage.
If accumulator float charge voltage, overcharged voltage, overdischarge pressure, maximum charging current respectively UbfUbmaxUbmin, ultracapacitor maximum voltage, minimum voltage respectively Ucmax,Ucmin, the output of photovoltaic cell is Pin, output voltage is Uin, bearing power is Pout
The specific works situation of photovoltaic generation power supply is as follows:
Mode of operation 1: work as Pin<Pout, control unidirectional Boost and be in maximal power tracing controlled state, provide ceiling capacity to load.Control reversible transducer 1 and be in Boost state, regulate its dutycycle to control the discharge current of ultracapacitor to meet load needs, and maintain DC bus-bar voltage UdStablize.In this process, reversible transducer 2 is off pattern.
Mode of operation 2: in mode of operation 1, if Uc<Ucmin,, represent that super capacitor electrode forces down in the minimum voltage set, control reversible transducer 1 and work in shutdown mode, quit work.Control reversible transducer 2 in Boost state, storage battery constant-current discharge simultaneously, to load supplying together with photovoltaic cell, maintain UdStable, until Ub<Ubmin, control reversible transducer 1 in shutdown mode, stop dc bus being discharged.Accumulator adopts.
Mode of operation 3: work as Pin>Pout, regulating the dutycycle of uni-directional converter so as to work in maximal power tracing state, photovoltaic cell powers to the load, now, if Uc<Ucmax, the excess energy P of photovoltaic cell outputin-PoutPass to ultracapacitor, control reversible transducer 1 and work in Buck pattern, by the charging current of adjustment Duty ratio control electric capacity to maintain UdStable.This process controls reversible transducer 2 in shutdown mode.
Mode of operation 4:Pin>Pout, such as Uc>Ucmax, represent that ultracapacitor has reached maximum voltage.Now controlling reversible transducer 2 and work in Buck state, to accumulator constant-current charge, accumulator stores energy, and constant current charge-discharge pattern meets the charge-discharge characteristic of accumulator.In this process, in order to ensure UdStablize, control reversible transducer 1 work in Boost pattern, to maintain UdStable.
Mode of operation 5: in mode of operation 4, such as Ubmax>Ub>Ubf, control uni-directional converter and transferred to constant voltage output mode by MPPT pattern, maintain UdStable, control reversible transducer 2 simultaneously and continue to operate in Buck state, to accumulator constant voltage mode floating charging, reversible transducer 1 works in shutdown mode, quits work.
Mode of operation 6: work as Pin>Pout, such as Ub>Ubmax, now ultracapacitor and accumulator are all in fully charged state, and two two-way change devices all work in shutdown mode.Uni-directional converter continues to operate in constant voltage mode, maintains UdStable, power to load constant voltage.

Claims (2)

1. the hybrid energy-storing formula photo-voltaic power supply being applied to high-tension insulator parameter monitoring system, it is characterized in that: the hybrid energy-storing unit of power supply is made up of ultracapacitor and accumulator, ultracapacitor is connected to dc bus through two-way DC/DC changer 1, accumulator is connected to dc bus through two-way DC/DC changer 2, and ultracapacitor and accumulator carry out energy snubber by inducer.
2. the hybrid energy-storing formula photo-voltaic power supply being applied to high-tension insulator parameter monitoring system according to right 1, is characterized in that: the unidirectional current that photovoltaic cell sends delivers to dc bus after DC/DCboost changer, and dc bus is connected with load.
CN201620126794.0U 2016-02-18 2016-02-18 Be applied to high voltage insulator parameter monitoring system's mixed energy storage formula photovoltaic power Expired - Fee Related CN205377391U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620126794.0U CN205377391U (en) 2016-02-18 2016-02-18 Be applied to high voltage insulator parameter monitoring system's mixed energy storage formula photovoltaic power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620126794.0U CN205377391U (en) 2016-02-18 2016-02-18 Be applied to high voltage insulator parameter monitoring system's mixed energy storage formula photovoltaic power

Publications (1)

Publication Number Publication Date
CN205377391U true CN205377391U (en) 2016-07-06

Family

ID=56270791

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620126794.0U Expired - Fee Related CN205377391U (en) 2016-02-18 2016-02-18 Be applied to high voltage insulator parameter monitoring system's mixed energy storage formula photovoltaic power

Country Status (1)

Country Link
CN (1) CN205377391U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108695841A (en) * 2018-06-08 2018-10-23 哈尔滨工程大学 A kind of low-power independent photovoltaic generating system control method and its main circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108695841A (en) * 2018-06-08 2018-10-23 哈尔滨工程大学 A kind of low-power independent photovoltaic generating system control method and its main circuit

Similar Documents

Publication Publication Date Title
CN103904735B (en) A kind of energy storage subsystem for batch (-type) renewable energy system and control method thereof
CN102427249B (en) Method and system for controlling distributed micro-grid parallel operation
CN201985605U (en) Photovoltaic power supply system
CN104993506A (en) Hybrid energy storage device of distributed power generation system
CN202888862U (en) Energy storage inverter suitable for distributed new energy power
CN105576685A (en) Energy storage system for new energy micro-grid
CN103532480A (en) Power device of high-voltage direct current power transmission line fault monitoring terminal
CN102957169A (en) Uninterruptible power supply system with improved conversion efficiency of power supply
CN205377391U (en) Be applied to high voltage insulator parameter monitoring system&#39;s mixed energy storage formula photovoltaic power
CN109768561A (en) A kind of Control of Electric Vehicles method and system
CN204103559U (en) A kind of power circuit
CN203299290U (en) Hybrid-energy-storage-based micro-grid technical verification platform equipment
CN202997587U (en) Intelligent micro-network distributed power supply
CN202749870U (en) Storage battery intelligent uniform charging controller for grid-disconnection type wind and light complementary power generation system
CN105811862A (en) Energy storage power station and energy storage method
CN106787086A (en) A kind of pair of PWM permanent magnetism power-driven system and its control method
CN207426794U (en) Novel power transmission line monitoring equipment energy-storage system
CN202550648U (en) Power adapter with function of electric energy storage
CN104092280B (en) Fuel cell standby power source system based on super capacitor starting
CN102820688A (en) Automobile power system
CN202134923U (en) Deep charging and discharging type battery energy storage paralleling device
CN207518294U (en) It is a kind of to realize the device for extending power supply continuation of the journey duration
CN202405836U (en) Photovoltaic charging system and charging station
CN205725118U (en) A kind of energy-accumulating power station
CN201898380U (en) Solar energy power generation and storage device

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160706

Termination date: 20190218