CN109004682A - A kind of intelligent micro-grid - Google Patents
A kind of intelligent micro-grid Download PDFInfo
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- CN109004682A CN109004682A CN201810915173.4A CN201810915173A CN109004682A CN 109004682 A CN109004682 A CN 109004682A CN 201810915173 A CN201810915173 A CN 201810915173A CN 109004682 A CN109004682 A CN 109004682A
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- 238000012806 monitoring device Methods 0.000 claims abstract description 85
- 238000010248 power generation Methods 0.000 claims abstract description 51
- 230000005611 electricity Effects 0.000 claims abstract description 36
- 238000012544 monitoring process Methods 0.000 claims abstract description 33
- 238000004146 energy storage Methods 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 27
- 230000002457 bidirectional effect Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 238000007726 management method Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000013021 overheating Methods 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 claims description 3
- 230000011664 signaling Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000007619 statistical method Methods 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- H02J13/0096—
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- H02J3/383—
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- H02J3/386—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
-
- 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
-
- 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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
-
- 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
-
- 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
-
- 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
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The present invention provides a kind of intelligent micro-grids, comprising: photovoltaic generating monitoring device, wind-power electricity generation monitoring device, miniature gas turbine generating monitoring device, other generating monitoring devices, energy storage monitoring device, load monitoring device and integrated information monitoring device.A kind of intelligent micro-grid of the invention passes through the real time information such as acquisition distributed power generation DG power supply point, route, power distribution network, load, form the real-time monitoring of entire micro-capacitance sensor trend, the operation of Real-Time Scheduling adjustment micro-capacitance sensor, and micro-capacitance sensor active power is accurately estimated, enhance power monitoring effect.
Description
The application is a kind of a kind of patent of invention " micro-capacitance sensor monitoring system " divisional application of micro-capacitance sensor monitoring system, patent
Title: a kind of micro-capacitance sensor monitoring system, application number: 2017112654240, the applying date: on December 5th, 2017.
Technical field
The present invention relates to micro-capacitance sensor fields, and in particular to a kind of intelligent micro-grid.
Background technique
Micro-capacitance sensor is that be made of distributed power generation DG, load, energy storage device and control device one is single controllable only
Vertical electricity generation system, micro-capacitance sensor, which is one, can be realized self-contr ol, protection and the autonomous system of management, both can be with external electrical network
It is incorporated into the power networks, it can also be with isolated operation.
However existing micro-capacitance sensor monitor supervision platform function is more single, not smart enoughization, and the calculating to microgrid power
Error is larger, and power monitoring effect is not ideal enough.
Summary of the invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a kind of intelligent micro-grids, comprising:
Photovoltaic generating monitoring device, wind-power electricity generation monitoring device, miniature gas turbine generating monitoring device, other power generation monitoring dresses
It sets, energy storage monitoring device, load monitoring device and integrated information monitoring device, wherein
Photovoltaic generating monitoring device is used for:
(1) the current power generation general power, day total power generation of real-time display photovoltaic, accumulative total power generation, accumulative CO2Total emission reduction with
And daily generated output curve graph,
(2) operating parameter of each photovoltaic DC-to-AC converter, including DC voltage, DC current, stream power, alternating voltage, exchange are checked
Electric current, frequency, current generated output, power factor, day hair amount, accumulative power generation most, temperature in accumulative C02 emission reduction, inverter machine
Degree and function output curve diagram interior for 24 hours,
(3) operating status for monitoring inverter, prompts equipment to break down, sees failure cause and failure using sound-light alarm mode
Time, fault message include: network voltage is excessively high, network voltage is too low, mains frequency is excessively high, mains frequency is too low, direct current
It presses through too low height, DC voltage, inverter overload, inverter overheating, inverter short circuit, radiator overheat, inverter isolated island, lead to
Letter failure,
(4) the short-term and ultra-short term generated output for predicting photovoltaic power generation, provides foundation for microgrid energy Optimized Operation,
(5) photovoltaic generation power is adjusted, the start and stop of photovoltaic DC-to-AC converter are controlled；
Wind-power electricity generation monitoring device is used for:
(1) the current power generation general power, day total power generation of real-time display wind-power electricity generation, accumulative total power generation, and interior power generation for 24 hours
Power graph.
(2) acquire fan operation state data, mainly include three-phase voltage, three-phase current, mains frequency, power factor,
Output power, generator speed, wind speed round, generator windings temperature, gear-box oil temperature, environment temperature, control plate temperature, machine
The abrasion of tool brake pad and temperature, Cable Twist, cabin vibrations, anemobiagraph and wind vane.
(3) the short-term and ultra-short term generated output for predicting wind-power electricity generation, provides foundation for microgrid energy Optimized Operation.
(4) wind-power electricity generation power is adjusted, the start and stop of inverter are controlled；
Miniature gas turbine generating monitoring device is used for:
(1) the main running parameter of miniature gas turbine generating set, including revolving speed, gas inlet amount, gaseous-pressure, row are monitored
Atmospheric pressure, delivery temperature, pinking amount, oxygen content,
(2) grid-connected front and back voltage, electric current, frequency, phase and power factor are monitored,
(3) divide miniature gas turbine generating set working condition the adjusting of Xin, management and working condition；
Other generating monitoring devices are used for:
Monitor current DG output voltage, operating current, input power, grid-connected current, grid-connected power, network voltage, current power generation
Power, accumulative generated output, power output curve interior for 24 hours, grid-connected power curve interior for 24 hours；
Energy storage monitoring device is used for:
(1) real-time display energy storage it is current can discharge capacity, chargeable amount, maximum discharge power, present discharge power, when can discharge
Between, total charge volume, total discharge capacity,
(2) remote signalling: operating status, the protection information, warning information of alternating current-direct current bidirectional converter, wherein protection information includes low
Voltage protection, overvoltage protection, open-phase protection, low frequency protection, overfrequency protection, overcurrent protection, device abnormal protection, electricity
The protection of pond group unusual service condition, overheat protector,
(3) telemetering: cell voltage, battery charging and discharging electric current, the alternating voltage, input-output power of alternating current-direct current bidirectional converter,
(4) distant to wither: remote regulating being carried out to battery charging and discharging time, charging and discharging currents, battery protection voltage, realizes distal end to alternating current-direct current
The adjusting of bidirectional converter relevant parameter,
(5) it is remotely controlled: the charging of far-end remote control battery, battery discharge is carried out to alternating current-direct current bidirectional converter；
Load monitoring device is used for:
(1) load voltage, electric current, active power, reactive power, apparent energy are monitored,
(2) load maximum power and time of occurrence, maximum three-phase voltage and time of occurrence, maximum three-phase activity coefficient are recorded and is gone out
Between current, statistical monitoring rate of qualified voltage, power off time,
(3) load overload alarm, history curve, report, event query are provided；
Integrated information monitoring device is used for:
The integrated information for monitoring micro-grid system operation, including micro-grid system frequency, the voltage of points of common connection, distribution exchange
Power, and the total generated output of real-time statistics micro-capacitance sensor, energy storage residual capacity, the total burden with power of micro-capacitance sensor, total load or burden without work, sensitivity
The total active, controllable burden of load is always active, complete load curtailment is always active, and monitors each killer switch shape inside micro-capacitance sensor
The real-time prison of entire micro-capacitance sensor is completed in the alarm real time information of state, each branch active power, each branch reactive power, each equipment
Control and statistics.
Preferably, the system from the power distribution network dispatch layer of micro-capacitance sensor, central control level, on the spot three levels of control layer into
Row integrated management and control, wherein power distribution network dispatch layer coordinates multiple micro-capacitance sensors from the angle of power distribution network safe and economical operation, micro-
Power grid receives the adjusting control command of higher level's power distribution network, and micro-capacitance sensor central control level manages distributed generation resource and all kinds of negative concentratedly
Lotus is responsible for realizing the maximization of micro-capacitance sensor value and optimizes micro-capacitance sensor operation, in off-grid operation in micro-grid connection operation
Adjust the electricity consumption situation of distribution power power output and each type load, the lower layer's distributed power controller of control layer and load control on the spot
Device processed is responsible for the transient power balance and low-frequency load shedding of micro-capacitance sensor.
Preferably, the load monitoring device is also used to: calculating active-power P as followsL:
Wherein,,fiFor the device frequency of i-th of energy storage device, fNFor system nominal frequency, * is per unit value, PLNFor
Active power under rated frequency, PVFor the compensation fluctuated to system voltage, a0+a1+…+an=1。
A kind of intelligent micro-grid of the invention is real by acquisition distributed power generation DG power supply point, route, power distribution network, load etc.
When information, form the real-time monitoring of entire micro-capacitance sensor trend, Real-Time Scheduling adjusts the operation of micro-capacitance sensor, and to micro-capacitance sensor wattful power
Rate is accurately estimated, power monitoring effect is enhanced.
Detailed description of the invention
Fig. 1 is the architecture diagram of intelligent micro-grid of the present invention；
Fig. 2 is the hierarchical chart of intelligent micro-grid of the present invention.
Specific embodiment
Micro-capacitance sensor monitoring management system, mainly to distributed power generation, energy storage device and the load condition inside micro-capacitance sensor
Real time comprehensive monitoring is carried out, is convenient for when micro-grid connection operation, off-grid operation and state switch, it is special according to power supply and load
Property, control is optimized to internal distributed power generation, energy storage device and load and energy, realizes the safety and stability fortune of micro-capacitance sensor
Row, improves the efficiency of energy utilization of micro-capacitance sensor.
Intelligent micro-grid is believed in real time by acquisition distributed power generation DG power supply point, route, power distribution network, load etc.
Breath forms the real-time monitoring of entire micro-capacitance sensor trend, and is constrained according to micro-capacitance sensor operation constraint and energy balance, adjusts in real time
The operation of degree adjustment micro-capacitance sensor.In intelligent micro-grid, energy management is integrated DG, load, energy storage dress is stubborn and connects with power distribution network
The key link of mouth.
By specific embodiment and/or embodiment, the present invention is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, which show the architecture diagrams of intelligent micro-grid of the present invention.A kind of intelligent micro-grid, comprising:
Photovoltaic generating monitoring device, wind-power electricity generation monitoring device, miniature gas turbine generating monitoring device, other power generation monitoring dresses
It sets, energy storage monitoring device, load monitoring device and integrated information monitoring device, the photovoltaic generating monitoring device, wind-power electricity generation
Monitoring device, miniature gas turbine generating monitoring device, other generating monitoring devices, energy storage monitoring device, load monitoring device
Logical connection or electrical connection between integrated information monitoring device, and the photovoltaic generating monitoring device, wind-power electricity generation monitoring dress
It sets, miniature gas turbine generating monitoring device, other generating monitoring devices, energy storage monitoring device, load monitoring device and synthesis
Information monitoring device includes the apparatus module and/or unit for realizing its monitoring function.Wherein,
Photovoltaic generating monitoring device comprehensively monitors the real-time traffic information and warning message of photovoltaic power generation, and to photovoltaic
Power generation carries out various statistics and analysis, realizes the control in all directions to photovoltaic power generation.
Photovoltaic generating monitoring device is specifically used for:
(1) the current power generation general power, day total power generation of real-time display photovoltaic, accumulative total power generation, accumulative CO2Total emission reduction with
And daily generated output curve graph,
(2) operating parameter of each photovoltaic DC-to-AC converter, including DC voltage, DC current, stream power, alternating voltage, exchange are checked
Electric current, frequency, current generated output, power factor, day hair amount, accumulative power generation most, temperature in accumulative C02 emission reduction, inverter machine
Degree and function output curve diagram interior for 24 hours,
(3) operating status for monitoring inverter, prompts equipment to break down, sees failure cause and failure using sound-light alarm mode
Time, fault message include: network voltage is excessively high, network voltage is too low, mains frequency is excessively high, mains frequency is too low, direct current
It presses through too low height, DC voltage, inverter overload, inverter overheating, inverter short circuit, radiator overheat, inverter isolated island, lead to
Letter failure,
(4) the short-term and ultra-short term generated output for predicting photovoltaic power generation, provides foundation for microgrid energy Optimized Operation,
(5) photovoltaic generation power is adjusted, the start and stop of photovoltaic DC-to-AC converter are controlled；
Wind-power electricity generation monitoring device comprehensively monitors real-time traffic information, the warning message of wind-power electricity generation, and to wind-force
Power generation carries out various statistics and analysis, realizes the monitoring in all directions to wind-power electricity generation.
Wind-power electricity generation monitoring device is specifically used for:
(1) the current power generation general power, day total power generation of real-time display wind-power electricity generation, accumulative total power generation, and interior power generation for 24 hours
Power graph.
(2) acquire fan operation state data, mainly include three-phase voltage, three-phase current, mains frequency, power factor,
Output power, generator speed, wind speed round, generator windings temperature, gear-box oil temperature, environment temperature, control plate temperature, machine
The abrasion of tool brake pad and temperature, Cable Twist, cabin vibrations, anemobiagraph and wind vane.
(3) the short-term and ultra-short term generated output for predicting wind-power electricity generation, provides foundation for microgrid energy Optimized Operation.
(4) wind-power electricity generation power is adjusted, the start and stop of inverter are controlled；
The real-time traffic information and warning message that miniature gas turbine generating monitoring device generates electricity to miniature gas turbine carry out complete
Face monitoring, and various statistical analysis are carried out to miniature gas turbine power generation, realize the overall monitor to miniature gas turbine.
Miniature gas turbine generating monitoring device is specifically used for:
(1) the main running parameter of miniature gas turbine generating set, including revolving speed, gas inlet amount, gaseous-pressure, row are monitored
Atmospheric pressure, delivery temperature, pinking amount, oxygen content,
(2) grid-connected front and back voltage, electric current, frequency, phase and power factor are monitored,
(3) divide miniature gas turbine generating set working condition the adjusting of Xin, management and working condition；
Other generating monitoring devices are similar with above-mentioned generating monitoring device,
Other generating monitoring devices are specifically used for:
Monitor current DG output voltage, operating current, input power, grid-connected current, grid-connected power, network voltage, current power generation
Power, accumulative generated output, power output curve interior for 24 hours, grid-connected power curve interior for 24 hours；
Energy storage monitoring device comprehensively supervises real-time traffic information, the warning message of energy-storage battery and energy accumulation current converter PCS
Depending on, and various statistics and analysis are carried out to energy storage, realize the control in all directions to energy storage.
Energy storage monitoring device is specifically used for:
(1) real-time display energy storage it is current can discharge capacity, chargeable amount, maximum discharge power, present discharge power, when can discharge
Between, total charge volume, total discharge capacity,
(2) remote signalling: operating status, the protection information, warning information of alternating current-direct current bidirectional converter, wherein protection information includes low
Voltage protection, overvoltage protection, open-phase protection, low frequency protection, overfrequency protection, overcurrent protection, device abnormal protection, electricity
The protection of pond group unusual service condition, overheat protector,
(3) telemetering: cell voltage, battery charging and discharging electric current, the alternating voltage, input-output power of alternating current-direct current bidirectional converter,
(4) distant to wither: remote regulating being carried out to battery charging and discharging time, charging and discharging currents, battery protection voltage, realizes distal end to alternating current-direct current
The adjusting of bidirectional converter relevant parameter,
(5) it is remotely controlled: the charging of far-end remote control battery, battery discharge is carried out to alternating current-direct current bidirectional converter；
Load monitoring device carries out overall monitor to load operation information and warning message, and carries out various statistics to load
The overall monitor to load is realized in analysis.
Load monitoring device is specifically used for:
(1) load voltage, electric current, active power, reactive power, apparent energy are monitored,
(2) load maximum power and time of occurrence, maximum three-phase voltage and time of occurrence, maximum three-phase activity coefficient are recorded and is gone out
Between current, statistical monitoring rate of qualified voltage, power off time,
(3) load overload alarm, history curve, report, event query are provided；
Integrated information monitoring device is specifically used for:
The integrated information for monitoring micro-grid system operation, including micro-grid system frequency, the voltage of points of common connection, distribution exchange
Power, and the total generated output of real-time statistics micro-capacitance sensor, energy storage residual capacity, the total burden with power of micro-capacitance sensor, total load or burden without work, sensitivity
The total active, controllable burden of load is always active, complete load curtailment is always active, and monitors each killer switch shape inside micro-capacitance sensor
The real-time prison of entire micro-capacitance sensor is completed in the alarm real time information of state, each branch active power, each branch reactive power, each equipment
Control and statistics.
Intelligent micro-grid is to integrate local distributed power generation, load, energy storage and the key link with distribution network interface, can
Strategy is controlled to adjust to generate by fixed power balancing algorithm, guarantees the stabilization of micro-capacitance sensor simultaneously, when off-network and state switch
Operation.
Further, the load monitoring device is also used to: calculating active-power P as followsL:
Wherein,,fiFor the device frequency of i-th of energy storage device, fNFor system nominal frequency, * is per unit value, PLNFor
Active power under rated frequency, PVFor the compensation fluctuated to system voltage, a0+a1+…+an=1。
Referring to fig. 2, the system is from the power distribution network dispatch layer of micro-capacitance sensor, central control level, on the spot three levels of control layer
Integrated management and control are carried out, wherein power distribution network dispatch layer coordinates multiple micro-capacitance sensors from the angle of power distribution network safe and economical operation
(controlled cell that micro-capacitance sensor shows as list-relative to bulk power grid), micro-capacitance sensor receives the adjusting control command of higher level's power distribution network,
Micro-capacitance sensor central control level manages distributed generation resource (including distributed power generation and energy storage) and each type load concentratedly, micro-capacitance sensor simultaneously
It is responsible for realizing the maximization of micro-capacitance sensor value when net operation and optimizes micro-capacitance sensor operation, distribution power is adjusted in off-grid operation and is gone out
The electricity consumption situation of power and each type load, the distributed power controller and load governor of lower layer's control layer on the spot, is responsible for micro- electricity
The transient power of net balances and low-frequency load shedding.
A kind of intelligent micro-grid of the invention can be by software module and/or hardware device integration realization, by adopting
The real time information such as concentrated-distributed power generation DG power supply point, route, power distribution network, load, form the real-time monitoring of entire micro-capacitance sensor trend,
Real-Time Scheduling adjusts the operation of micro-capacitance sensor, and is accurately estimated micro-capacitance sensor active power, and power monitoring effect is enhanced.
The explanation of embodiment of above and/or embodiment is merely used to help understand method and thought of the invention, does not answer
It is interpreted as limitation of the present invention.The simple replacement and deformation that technical solution according to the present invention is done, still fall within power of the present invention
The protection scope that benefit requires and specification is covered.
Claims (2)
1. a kind of intelligent micro-grid characterized by comprising
Photovoltaic generating monitoring device, wind-power electricity generation monitoring device, miniature gas turbine generating monitoring device, other power generation monitoring dresses
It sets, energy storage monitoring device, load monitoring device and integrated information monitoring device, the photovoltaic generating monitoring device, wind-power electricity generation
Monitoring device, miniature gas turbine generating monitoring device, other generating monitoring devices, energy storage monitoring device, load monitoring device
Logical connection or electrical connection between integrated information monitoring device, and the photovoltaic generating monitoring device, wind-power electricity generation monitoring dress
It sets, miniature gas turbine generating monitoring device, other generating monitoring devices, energy storage monitoring device, load monitoring device and synthesis
Information monitoring device includes the apparatus module and/or unit for realizing its monitoring function, wherein
Photovoltaic generating monitoring device comprehensively monitors the real-time traffic information and warning message of photovoltaic power generation, and to photovoltaic
Power generation carries out various statistics and analysis, realizes the control in all directions to photovoltaic power generation；
Photovoltaic generating monitoring device is used for:
(1) the current power generation general power, day total power generation of real-time display photovoltaic, accumulative total power generation, accumulative CO2Total emission reduction with
And daily generated output curve graph,
(2) operating parameter of each photovoltaic DC-to-AC converter, including DC voltage, DC current, alternating voltage, alternating current, frequency are checked
Rate, current generated output, power factor, daily generation, the accumulative total of generating electricity, accumulative C02 emission reduction, inverter built-in temperature and
Power output curve graph in for 24 hours,
(3) operating status for monitoring inverter, prompts equipment to break down, sees failure cause and failure using sound-light alarm mode
Time, failure cause include: that network voltage is excessively high, network voltage is too low, mains frequency is excessively high, mains frequency is too low, direct current
It presses through too low height, DC voltage, inverter overload, inverter overheating, inverter short circuit, radiator overheat, inverter isolated island, lead to
Letter failure,
(4) the short-term and ultra-short term generated output for predicting photovoltaic power generation, provides foundation for microgrid energy Optimized Operation,
(5) photovoltaic generation power is adjusted, the start and stop of photovoltaic DC-to-AC converter are controlled；
Wind-power electricity generation monitoring device comprehensively monitors real-time traffic information, the warning message of wind-power electricity generation, and to wind-force
Power generation carries out various statistics and analysis, realizes the monitoring in all directions to wind-power electricity generation；
Wind-power electricity generation monitoring device is used for:
(1) the current power generation general power, day total power generation of real-time display wind-power electricity generation, accumulative total power generation, and interior power generation for 24 hours
Power graph,
(2) acquire fan operation state data, including three-phase voltage, three-phase current, mains frequency, power factor, output power,
Generator speed, wind speed round, generator windings temperature, gear-box oil temperature, environment temperature, control plate temperature, mechanical braking lock
Pad wear and temperature, Cable Twist, cabin vibrations, anemobiagraph and wind vane,
(3) the short-term and ultra-short term generated output for predicting wind-power electricity generation, provides foundation for microgrid energy Optimized Operation,
(4) wind-power electricity generation power is adjusted, the start and stop of inverter are controlled；
The real-time traffic information and warning message that miniature gas turbine generating monitoring device generates electricity to miniature gas turbine carry out complete
Face monitoring, and various statistical analysis are carried out to miniature gas turbine power generation, realize the overall monitor to miniature gas turbine；
Miniature gas turbine generating monitoring device is used for:
(1) running parameter of miniature gas turbine generating set, including revolving speed, gas inlet amount, gaseous-pressure, exhaust pressure are monitored
Power, delivery temperature, pinking amount, oxygen content,
(2) grid-connected front and back voltage, electric current, frequency, phase and power factor are monitored,
(3) to the adjusting of miniature gas turbine generating set Working state analysis, management and working condition；
Other generating monitoring devices are used for:
Monitor current DG output voltage, operating current, input power, grid-connected current, grid-connected power, network voltage, current power generation
Power, accumulative generated output, power output curve interior for 24 hours, grid-connected power curve interior for 24 hours；
Energy storage monitoring device is used for:
(1) real-time display energy storage it is current can discharge capacity, chargeable amount, maximum discharge power, present discharge power, when can discharge
Between, total charge volume, total discharge capacity,
(2) remote signalling: operating status, the protection information, warning information of alternating current-direct current bidirectional converter, wherein protection information includes low
Voltage protection, overvoltage protection, open-phase protection, low frequency protection, overfrequency protection, overcurrent protection, device abnormal protection, electricity
The protection of pond group unusual service condition, overheat protector,
(3) telemetering: cell voltage, battery charging and discharging electric current, the alternating voltage, input-output power of alternating current-direct current bidirectional converter,
(4) distant to wither: remote regulating being carried out to battery charging and discharging time, charging and discharging currents, battery protection voltage, realizes distal end to alternating current-direct current
The adjusting of bidirectional converter relevant parameter,
(5) it is remotely controlled: the charging of far-end remote control battery, battery discharge is carried out to alternating current-direct current bidirectional converter；
Load monitoring device carries out overall monitor to load operation information and warning message, and carries out various statistics to load
The overall monitor to load is realized in analysis；
Load monitoring device is used for:
(1) load voltage, electric current, active power, reactive power, apparent energy are monitored,
(2) load maximum power and time of occurrence, maximum three-phase voltage and time of occurrence, maximum three-phase activity coefficient are recorded and is gone out
Between current, statistical monitoring rate of qualified voltage, power off time,
(3) load overload alarm, history curve, report, event query are provided；
Integrated information monitoring device is used for:
The integrated information for monitoring micro-grid system operation, including micro-grid system frequency, the voltage of points of common connection, distribution exchange
Power, and the total generated output of real-time statistics micro-capacitance sensor, energy storage residual capacity, the total burden with power of micro-capacitance sensor, total load or burden without work, sensitivity
The total active, controllable burden of load is always active, complete load curtailment is always active, and monitors each killer switch shape inside micro-capacitance sensor
The real-time prison of entire micro-capacitance sensor is completed in the alarm real time information of state, each branch active power, each branch reactive power, each equipment
Control and statistics.
2. a kind of intelligent micro-grid, it is characterised in that the intelligent micro-grid is from the power distribution network dispatch layer of micro-capacitance sensor, centralized control
Layer, three levels of control layer carry out integrated management and control on the spot.
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| CN109347407A (en) * | 2018-10-12 | 2019-02-15 | 江苏亚威变压器有限公司 | A kind of micro-capacitance sensor |
| CN109768576B (en) * | 2019-02-26 | 2021-04-02 | 廊坊新奥泛能网络科技服务有限公司 | Universal energy station and reverse power protection method and device thereof |
| CN109961157B (en) * | 2019-04-03 | 2020-05-12 | 内蒙古盛越新能源有限公司 | Inspection method and system of solar photovoltaic power generation system |
| CN110113379A (en) * | 2019-04-08 | 2019-08-09 | 上海大学 | A kind of micro-capacitance sensor monitoring system and its implementation based on OneNet platform |
| CN110365110A (en) * | 2019-07-09 | 2019-10-22 | 广东埃文低碳科技股份有限公司 | A kind of management terminal being distributed energy internet |
| CN110426590B (en) * | 2019-07-15 | 2022-01-25 | 国电南瑞科技股份有限公司 | Multi-energy information interaction device suitable for comprehensive energy system |
| CN112421688A (en) * | 2020-10-30 | 2021-02-26 | 南京因泰莱电器股份有限公司 | Frequency and voltage modulation method for battery energy storage system |
| CN114243754B (en) * | 2021-11-16 | 2024-01-26 | 云南电网有限责任公司迪庆供电局 | Self-adaptive off-grid energy storage response control method and control system |
| CN114243902A (en) * | 2021-11-17 | 2022-03-25 | 国网江苏省电力有限公司盐城供电分公司 | Power grid monitoring method containing new energy |
| CN114024342B (en) * | 2021-12-01 | 2023-09-22 | 中原工学院 | Wind-solar energy storage power generation integrated management system |
| CN117895658A (en) * | 2024-03-13 | 2024-04-16 | 国网山东省电力公司诸城市供电公司 | Intelligent micro-grid data analysis platform |
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| CN109004684A (en) | 2018-12-14 |
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| CN107959306B (en) | 2018-09-21 |
| CN107959306A (en) | 2018-04-24 |
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