CN208299446U - Can remote measurement and control new energy equipment integrated grid-connecting apparatus - Google Patents
Can remote measurement and control new energy equipment integrated grid-connecting apparatus Download PDFInfo
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- CN208299446U CN208299446U CN201820495421.XU CN201820495421U CN208299446U CN 208299446 U CN208299446 U CN 208299446U CN 201820495421 U CN201820495421 U CN 201820495421U CN 208299446 U CN208299446 U CN 208299446U
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
-
- Y—GENERAL 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model proposes it is a kind of can remote measurement and control new energy equipment integrated grid-connecting apparatus, for controlling distributed photovoltaic power, including electric quantity protective module, non-ionizing energy loss module, governor circuit, display screen, storage circuit and telecommunication circuit；Non-ionizing energy loss circuit includes multiple sensors；A variety of fuser sensors pass through connection A/D converter circuit respectively and are connected with governor circuit, and governor circuit is connected by connection relay with breaker, and breaker connects distributed photovoltaic power；With powerful integration capability and expansion capacity; it is able to satisfy the functional requirement at this stage to distributed power generation; provided with a variety of circuits such as Timed current-limiting protection, zero-sequence current protection, under-voltage protection, overvoltage protections; realize the automatic protection of circuit common failure; by the memory that large capacity is arranged; it can be reserved for a large amount of historical data, statistical data in device, facilitate inquiry；Long-distance management maintenance is realized by the way that a variety of communication units are arranged.
Description
Technical field
The utility model relates to the long-range interconnection technology fields of new energy, in particular to one kind can remote measurement and control new energy equipment
Integrated grid-connecting apparatus.
Background technique
There is the situation of extra normal development in new energy in energy crisis, global range.Investment of the various countries to new energy
It increases substantially, new energy production capacity also sharply expands.Renewable energy power generation is the core of new energy development, and wind-powered electricity generation is in technology
With new energy form most competitive in cost, make full use of the technologies such as water power, biogas, solar thermal utilization and geothermal energy at
Ripe, good economy performance renewable energy can accelerate the industrialization hair for promoting wind-power electricity generation, biomass power generation, solar power generation
Exhibition.
It mainly includes water energy (referring mainly to small hydropower station), wind energy, biomass that the new energy of industry, which can be formed, in China
Energy, solar energy, geothermal energy etc. are recyclable clean energy resourcies.The development of New Energy Industry is both entire energy supply system
Effective means of supplementing out economy of system and the important measures of environmental improvement and ecological protection, are to meet human social need
The final energy demand prediction wanted.Solar energy clean and environmental protection, without any pollution, utility value is high, solar energy more without energy shortage this
One saying, various advantages determine its status that do not replace in energy replacement.
Include that specification conversion, case become observing and controlling, stand alone exchange in traditional photovoltaic station communication set, in addition to costly, accounts for
Except ground area is big, autonomous device producer is independently debugged, and responsibility is not easy point, is shifted responsibility onto others and is disputed over trifles, time-consuming；Cannot accomplish on-call maintenance,
Effective protection.
Utility model content
The purpose of this utility model aims to solve at least one of the technological deficiency.
For this purpose, a purpose of the utility model be to propose it is a kind of can remote measurement and control new energy equipment integration it is grid-connected
Device can voluntarily cut off electricity by the way that the integrated control of a variety of monitorings and protective module realization to distributed photovoltaic power is arranged
Road carries out automatic protection, can be realized and upload various parameters, remote maintenance may be implemented, and is saved using memory big
Historical data, the statistical data of amount, facilitate inquiry.
To achieve the goals above, the embodiment of the utility model one side one kind is provided can remote measurement and control new energy equipment
Integrated grid-connecting apparatus, for controlling distributed photovoltaic power, including electric quantity protective module, non-ionizing energy loss module, master control
Circuit, display screen, storage circuit and telecommunication circuit；The electric quantity protective module, display screen, storage circuit and telecommunication circuit difference
It is connected with governor circuit；The non-ionizing energy loss circuit includes multiple sensors；A variety of sensors pass through connection respectively
A/D converter circuit is connected with governor circuit, and the electric quantity protective module includes current protecting circuit and voltage protection circuit；Institute
It states current protecting circuit and voltage protection circuit is connected with governor circuit respectively；The governor circuit by connection relay with
Breaker is connected, and the breaker connects distributed photovoltaic power.
Preferably, the current protecting circuit includes Timed current-limiting protection location；The Timed current-limiting protection location includes
First sampling resistor, electric current relay, the time relay and breaking coil；The one of first sampling resistor and electric current relay
End connection, the input terminal of the other end connection governor circuit of the electric current relay, when the output end of the governor circuit connects
Between relay one end, the other end of the time relay connects breaking coil, and the breaking coil connects breaker.
Preferably, the current protecting circuit includes zero-sequenceprotection unit；The zero-sequenceprotection unit includes the second sampling
Resistance, the first amplifier and the second amplifier；Power grid is accessed by connection transformer in one end of second sampling resistor, described
The other end of second sampling resistor connects the inverting input terminal of the first amplifier, and the output end of the first amplifier passes through connection third
Resistance connects the normal phase input end of the second amplifier, and the output end of second amplifier connects governor circuit.
Preferably, the voltage protection circuit includes under-voltage protection unit, and the under-voltage protection unit includes pressure stabilizing
Pipe, optocoupler and controllable voltage-stabiliser tube；The cathode of the voltage-stabiliser tube is connected with the input terminal of optocoupler, and the anode of the voltage-stabiliser tube connects
Ground, the output end of the optocoupler connect the cathode of controllable voltage-stabiliser tube, the plus earth of the controllable voltage-stabiliser tube, control terminal linker
Quasi- resistance.
Preferably, multiple sensors include at least firedamp sensor, temperature sensor, pressure in the non-ionizing energy loss circuit
Force snesor, oil level limit sensors.
Preferably, the storage circuit uses the storage chip of model AT24C02N, and the storage chip passes through serial ports
It is connected with governor circuit.
Preferably, the telecommunication circuit includes 2 road ethernet communication units and 8 road RS485 communication units；Described in 2 tunnels too
Network Communication unit is all made of 10/100M Ethernet interface, and RS485 communication unit described in 8 tunnels uses max485 serial communication chip.
According to one kind provided by the embodiment of the utility model can remote measurement and control new energy equipment integrated grid-connecting apparatus, until
It has the advantage that the present apparatus has powerful integration capability and expansion capacity less, had both been able to satisfy at this stage to distributed power generation
Functional requirement, and provide enough extending spaces for the perfect upgrading of tomorrow requirement；Provided with Timed current-limiting protection, zero sequence
A variety of circuits such as current protection, under-voltage protection, overvoltage protection, realize the automatic protection of circuit common failure, by setting
The memory for setting large capacity can be reserved for a large amount of historical data, statistical data in device, facilitate inquiry；It is a variety of logical by being arranged
Letter unit realizes long-distance management maintenance.
The additional aspect of the utility model and advantage will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 be one kind provided by the embodiment of the utility model can remote measurement and control new energy equipment integrated grid-connecting apparatus
Circuit connection diagram；
It is that one kind provided by the embodiment of the utility model can remote measurement and control new energy equipment after Fig. 2 (a) and Fig. 2 (b) splicing
Integrated grid-connecting apparatus interface diagram；
Fig. 3 be one kind provided by the embodiment of the utility model can remote measurement and control new energy equipment integrated grid-connecting apparatus
The circuit diagram of Timed current-limiting protection location；
Fig. 4 be one kind provided by the embodiment of the utility model can remote measurement and control new energy equipment integrated grid-connecting apparatus
The circuit diagram of zero-sequenceprotection unit；
Fig. 5 be one kind provided by the embodiment of the utility model can remote measurement and control new energy equipment integrated grid-connecting apparatus
The circuit diagram of voltage protection circuit；
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
As shown in Figure 1, it is provided by the embodiment of the utility model can remote measurement and control new energy equipment integrated grid-connecting apparatus,
For controlling distributed photovoltaic power, including electric quantity protective module 1, non-ionizing energy loss module 2, governor circuit 3, display screen 4, deposit
Storage road 5 and telecommunication circuit 6；Electric quantity protective module, display screen, storage circuit and telecommunication circuit are connected with governor circuit respectively
It connects；Non-ionizing energy loss circuit includes multiple sensors；Multiple sensors pass through respectively connection A/D converter circuit and governor circuit and
Storage circuit is connected, and electric quantity protective module includes current protecting circuit and voltage protection circuit；Current protecting circuit and voltage
Protection circuit is connected with governor circuit respectively；Governor circuit is connected by connection relay with breaker, breaker connection
Distributed photovoltaic power.
In one embodiment of the utility model, electric quantity protective module is by the current value sampled and voltage value, automatically
It controls relay and then controls breaker and carry out circuitry cuts, photo-voltaic power supply is protected.Non-ionizing energy loss module includes more
Kind sensor, the sensor being directed to include at least firedamp sensor, temperature sensor, pressure sensor, oil level limit
Sensor.By setting governor circuit, every threshold value is set, when the parameter that the sensor detects is to being more than corresponding threshold value
When range, governor circuit control relay realization tripping or warning, including grave gas tripping, light gas alert, superhigh temperature trips,
High temperature alarm protection, the alarm protection of oil level abnormal alarm, pressure anomaly.If the non electrical quantity event after non electrical quantity trips or alerts
Barrier state always exists, then trip signal or alarm signal are always maintained at, and until non electrical quantity malfunction releases, user passes through remote
Journey can fall tripping or alarm signal by reset key with involution.Governor circuit uses STM32 series main control chip, and storage circuit is used for
The data parameters that each sensor uploads are stored, when governor circuit carries out reading data, are stored in reading storage circuit first
Data, governor circuit are communicated by connection communication module with host computer, and wherein display screen is for showing failure front and back each 10
A waveform, user sends information to host computer by communication module, and sends control instruction by host computer.
In 10KV power supply system, also to require to ensure protection act to enable overcurrent protection selectively to act
Sensitivity generallys use three-stage overcurrent protection, i.e. current quick-breaking, specified time overcurrent protection and inverse-time overcurrent protection combines
Mode, the overcurrent protection of full line may be implemented,
As being present apparatus part of interface schematic diagram after Fig. 2 (a), Fig. 2 (b) splicing；A, B, C are three-phase input current in figure；
As shown in figure 3, wherein current protecting circuit is Timed current-limiting protection location as preferred one embodiment；Timed current-limiting is protected
Protecting unit includes the first sampling resistor R1, electric current relay KA, time relay KT and breaking coil YR；First sampling resistor with
One end of electric current relay KA connects, the input terminal of the other end connection governor circuit of electric current relay KA, governor circuit it is defeated
The other end of one end of outlet Connection Time relay KT, time relay KT passes through connection signal relay KS connection tripping line
YR is enclosed, breaking coil connects breaker.When phase fault occurs for primary circuit, the first sampling resistor electric current moment increased, electricity
Current relay KA snap action, normally opened contact closure, acts time relay KT.When governor circuit carries out the time relay
Between set, time relay KT after the time limit of adjusting, delayed contact closure, make concatenated signal relay KS and centre
Relay KM movement.After KS movement, it is also turned on signal circuit, provides audible ringing signal.After KM movement, breaking coil is connected
The circuit YR makes circuit breaker Q F trip, and cuts off short trouble, realizes short-circuit protection.
As shown in figure 4, current protecting circuit includes zero-sequenceprotection unit in another embodiment of the utility model；Zero
Sequence protection location includes the second sampling resistor R2, the first amplifier U1A and the second amplifier U1B；The one of second sampling resistor R2
Power grid is accessed by connection transformer T1 in end, and the other end of the second sampling resistor R2 connects the anti-phase input of the first amplifier U1A
End, the output end of the first amplifier U1A is by the normal phase input end of connection the second amplifier of 3rd resistor R3 connection U1B, and second
The output end of amplifier U1B connects governor circuit.It is electric when occurring zero sequence between two-phase any in the three-phase current in power grid in figure
When stream, pressure drop is generated on the second sampling resistor R2, is gradually carried out by the first amplifier U1A and the second amplifier U1B at this time
After amplification, relay is controlled by governor circuit, is cut off, realizes zero-sequenceprotection.
As shown in figure 5, voltage protection circuit includes under-voltage protection list in another embodiment of the utility model
Member, under-voltage protection unit include voltage-stabiliser tube D1, optocoupler PC827 and controllable voltage-stabiliser tube TL431；The cathode and optocoupler of voltage-stabiliser tube D1
The input terminal of PC827 is connected, the plus earth of voltage-stabiliser tube D1, and the output end of optocoupler PC827 connects controllable voltage-stabiliser tube TL431's
Cathode, the plus earth of controllable voltage-stabiliser tube TL431, control terminal connect reference resistance.In the present embodiment, when voltage-stabiliser tube D1 cathode
Voltage be high level, optocoupler cut-off ,+15V voltage passes through the light emitting diode of optocoupler, until controllable voltage-stabiliser tube TL431, by controllable
Voltage-stabiliser tube TL431 is modulated to reference voltage (reference voltage value of modulation is determined by control terminal resistance value size) outputting reference at this time
Voltage；Relay is attracted, and photo-voltaic power supply works normally；When the brownout of voltage-stabiliser tube D1 cathode, optocoupler conducting, controllable pressure stabilizing
Pipe TL431 cannot provide reference voltage, only use as 2.5V voltage-stabiliser tube, and voltage is low level at this time, and relay disconnects, and realize
Under-voltage protection unit.
It should be noted that busbar voltage is close to voltage rating when under-voltage protection, therefore the normally-closed contact of relay
It is to disconnect.Even if electric current relay malfunctions (i.e. KA contact closure) due to route overload in route at this moment, also not
Cause causes circuit breaker Q F mistrip.
Storage circuit uses the storage chip of model AT24C02N, and storage chip is connected by serial ports with governor circuit
It connects.Telecommunication circuit includes 2 road ethernet communication units and 8 road RS485 communication units；2 tunnels too Network Communication unit is all made of 10/
100M Ethernet interface, 8 road RS485 communication units use max485 serial communication chip.It should be noted that the utility model
In, communication unit is simultaneously confined to above-mentioned wire communication, and GPRS wireless communication can also be realized using chips such as SIM800.
It should be noted that the citing of chip in governor circuit in the present embodiment, the citing of storage chip in storage circuit,
In communication unit, the citing of communication chip is not limited to the example above, can also be other modes, details are not described herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Stating may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be
It can be combined in any suitable manner in any one or more embodiment or examples.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model
Principle and objective in the case where above-described embodiment can be changed in the scope of the utility model, modify, replace and
Modification.The scope of the utility model is by appended claims and its equivalent limits.
Claims (7)
1. one kind can remote measurement and control new energy equipment integrated grid-connecting apparatus, for controlling distributed photovoltaic power, feature
It is, including electric quantity protective module, non-ionizing energy loss module, governor circuit, display screen, storage circuit and telecommunication circuit；It is described
Electric quantity protective module, display screen, storage circuit and telecommunication circuit are connected with governor circuit respectively；The non-ionizing energy loss circuit
Including multiple sensors；A variety of sensors pass through connection A/D converter circuit respectively and are connected with governor circuit, the electricity
Protective module includes current protecting circuit and voltage protection circuit；The current protecting circuit and voltage protection circuit respectively with master
Control circuit is connected；The governor circuit is connected by connection relay with breaker, and the breaker connects distributed light
Lie prostrate power supply.
2. it is according to claim 1 can remote measurement and control new energy equipment integrated grid-connecting apparatus, which is characterized in that it is described
Current protecting circuit includes Timed current-limiting protection location；The Timed current-limiting protection location include the first sampling resistor, electric current after
Electric appliance, the time relay and breaking coil；The connection of one end of first sampling resistor and electric current relay, the electric current relay
The input terminal of the other end connection governor circuit of device, one end of the output end Connection Time relay of the governor circuit are described
The other end of the time relay connects breaking coil, and the breaking coil connects breaker.
3. it is according to claim 1 or 2 can remote measurement and control new energy equipment integrated grid-connecting apparatus, which is characterized in that
The current protecting circuit includes zero-sequenceprotection unit；The zero-sequenceprotection unit includes the second sampling resistor, the first amplifier
With the second amplifier；Power grid is accessed by connection transformer in one end of second sampling resistor, second sampling resistor
The other end connects the inverting input terminal of the first amplifier, and the output end of the first amplifier is put by connection 3rd resistor connection second
The output end of the normal phase input end of big device, second amplifier connects governor circuit.
4. it is according to claim 1 can remote measurement and control new energy equipment integrated grid-connecting apparatus, which is characterized in that it is described
Voltage protection circuit includes under-voltage protection unit, and the under-voltage protection unit includes voltage-stabiliser tube, optocoupler and controllable voltage-stabiliser tube；
The cathode of the voltage-stabiliser tube is connected with the input terminal of optocoupler, the plus earth of the voltage-stabiliser tube, and the output end of the optocoupler connects
The cathode of controllable voltage-stabiliser tube, the plus earth of the controllable voltage-stabiliser tube are connect, control terminal connects reference resistance.
5. it is according to claim 1 can remote measurement and control new energy equipment integrated grid-connecting apparatus, which is characterized in that it is described
Multiple sensors include at least firedamp sensor, temperature sensor, pressure sensor, oil level limit biography in non-ionizing energy loss circuit
Sensor.
6. it is according to claim 1 can remote measurement and control new energy equipment integrated grid-connecting apparatus, which is characterized in that it is described
Storage circuit uses the storage chip of model AT24C02N, and the storage chip is connected by serial ports with governor circuit.
7. it is according to claim 1 can remote measurement and control new energy equipment integrated grid-connecting apparatus, which is characterized in that it is described
Telecommunication circuit includes 2 road ethernet communication units and 8 road RS485 communication units；Too Network Communication unit described in 2 tunnels is all made of 10/
100M Ethernet interface, RS485 communication unit described in 8 tunnels use max485 serial communication chip.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820495421.XU CN208299446U (en) | 2018-04-09 | 2018-04-09 | Can remote measurement and control new energy equipment integrated grid-connecting apparatus |
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| CN201820495421.XU CN208299446U (en) | 2018-04-09 | 2018-04-09 | Can remote measurement and control new energy equipment integrated grid-connecting apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728608A (en) * | 2019-03-19 | 2019-05-07 | 江苏金友电气有限公司 | New energy electric power grid-connecting apparatus |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728608A (en) * | 2019-03-19 | 2019-05-07 | 江苏金友电气有限公司 | New energy electric power grid-connecting apparatus |
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