CN106602719A - Microgrid control system - Google Patents
Microgrid control system Download PDFInfo
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- CN106602719A CN106602719A CN201610828031.5A CN201610828031A CN106602719A CN 106602719 A CN106602719 A CN 106602719A CN 201610828031 A CN201610828031 A CN 201610828031A CN 106602719 A CN106602719 A CN 106602719A
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- 238000011084 recovery Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 230000007704 transition Effects 0.000 description 5
- 238000011217 control strategy Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
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- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
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- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008439 repair process Effects 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00007—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using the power network as support for the transmission
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- H02J3/382—
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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
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- 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
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/121—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using the power network as support for the transmission
Abstract
The invention provides a microgrid control system. The microgrid control system comprises a microgrid master controller and a plurality of microgrids, wherein the plurality of microgrids are connected by means of power transmission lines and contact lines; the microgrid master controller is electrically connected with a microgrid controller of each microgrid among the plurality of microgrids; and each microgrid controller is used for monitoring an operating state of the corresponding microgrid, sending the operating state to the microgrid master controller and receiving a control command of the microgrid master controller, so as to control the corresponding microgrid to operate in an operating mode selected from one of a grid-connected operating mode, a risk operating mode, an isolated grid operating mode and a recovery grid-connected operating mode. By adopting the microgrid control system, the problem that the microgrids cannot switch the operating modes smoothly in the related technology is solved, and the smooth switching of operating modes of the microgrids is realized.
Description
Technical field
The present invention relates to electric power network technique field, in particular to a kind of micro grid control system.
Background technology
With the development of social economy, increasingly sharpening along with energy resource consumption, energy shortage, utilization rate be low and environment
Pollution also grows in intensity, and micro-capacitance sensor with its flexibly, efficiently, economic, environmental protection and energy is various etc. that advantage becomes development electric power
Industry, the main strategic means for solving energy problem.Micro-capacitance sensor can integrate a large amount of distributed news and generate electricity, and contribute to solving
The various problems that bulk power grid runs into, are the important component parts of power distribution network in following intelligent grid.
The operation control of micro-capacitance sensor must have the ability of the steady switching under grid-connected and isolated power grid pattern, existing micro-
Operation of power networks, is mostly the direct switching of both of which, and switchover policy is single, fluctuation of service.In order to realize the two of micro-capacitance sensor
The steady switching between typical operational mode is planted, needs one kind rationally to switch under many operational mode environment of micro-capacitance sensor steadily
The operation reserve of transition, so as to improve the power supply reliability of micro-capacitance sensor, makes the low-carbon environment-friendly energy and realizes sustainable development.
The content of the invention
The invention provides a kind of micro grid control system, can not smoothly be entered with least solving micro-capacitance sensor in correlation technique
The problem of the switching of row operational mode.
According to an aspect of the invention, there is provided a kind of micro grid control system, including：It is micro-capacitance sensor master controller, many
Individual micro-capacitance sensor；Wherein, the plurality of micro-capacitance sensor is connected by transmission line of electricity and interconnector；The micro-capacitance sensor master controller and institute
State the micro-capacitance sensor controller electrical connection of each micro-capacitance sensor in multiple micro-capacitance sensors；The micro-capacitance sensor controller is used to monitor micro-capacitance sensor
Running status is simultaneously sent to the micro-capacitance sensor master controller, and the control for receiving the micro-capacitance sensor master controller by running status
Instruction, with control micro-capacitance sensor with the pattern of being incorporated into the power networks, risk operational mode, isolated power grid pattern, recovery be incorporated into the power networks pattern it
One operational mode operation.
Alternatively, the micro-capacitance sensor master controller includes risk operational mode control module, the risk operational mode control
Molding block includes at least one of：First control module, for controlling the power flow direction between the plurality of micro-capacitance sensor；Second
Control module, for controlling the load of transmission line of electricity and power station and exerting oneself.
Alternatively, the first micro-capacitance sensor and the second micro-capacitance sensor, first micro-capacitance sensor and master are included in the plurality of micro-capacitance sensor
Electrical network is got in touch with, and in the case that second micro-capacitance sensor is got in touch with first micro-capacitance sensor, first control module includes following
One of：First control unit, transmits respectively with second micro-capacitance sensor for controlling the main electrical network to first micro-capacitance sensor
Power；Second control unit, for controlling the main electrical network to the first micro-capacitance sensor through-put power, first micro-capacitance sensor to
The second micro-capacitance sensor through-put power；3rd control unit, for control first micro-capacitance sensor respectively to the main electrical network and
The second micro-capacitance sensor through-put power；4th control unit, passes for controlling second micro-capacitance sensor to first micro-capacitance sensor
Defeated power, first micro-capacitance sensor is to the main electrical grid transmission power.
Alternatively, the micro-capacitance sensor master controller also includes：Isolated power grid mode control module, for the plurality of micro-
In the case that one or more micro-capacitance sensor in electrical network breaks down, control the plurality of micro-capacitance sensor and turned by risk operational mode
For isolated power grid pattern.
Alternatively, the isolated power grid mode control module includes：3rd control module, for occurring machine in micro-capacitance sensor
In the case that group failure is out of service, the load of the micro-capacitance sensor is accordingly cut off, to maintain power-balance；4th control mould
Block, for occurring line fault tripping load in micro-capacitance sensor in the case of, accordingly reduce exerting oneself for the micro-capacitance sensor, with tie up
Hold power-balance.
Alternatively, the micro-capacitance sensor master controller also includes：Recover the mode control module that is incorporated into the power networks, for described many
In the case that the failure of individual micro-capacitance sensor has all been excluded, controls the plurality of micro-capacitance sensor and switched to recover simultaneously by isolated power grid pattern
Network operation pattern.
Alternatively, the recovery mode control module that is incorporated into the power networks includes：5th control module, it is the plurality of for reducing
Voltage difference in micro-capacitance sensor between each micro-capacitance sensor and main electrical network；6th control module, for adjusting the plurality of micro-capacitance sensor in
The frequency of each micro-capacitance sensor so that frequency of the frequency of each micro-capacitance sensor less than main electrical network；7th control module, for adjusting
State the voltage of each micro-capacitance sensor in multiple micro-capacitance sensors so that the phase place of the voltage of main electrical network in advance with the voltage of each micro-capacitance sensor
Phase place.
Alternatively, the micro-capacitance sensor master controller also includes：Be incorporated into the power networks mode control module, the plurality of for controlling
Micro-capacitance sensor switchs to the pattern of being incorporated into the power networks by the recovery pattern of being incorporated into the power networks.
By the present invention, the micro grid control system of employing, including：Micro-capacitance sensor master controller, multiple micro-capacitance sensors；Wherein,
Multiple micro-capacitance sensors are connected by transmission line of electricity and interconnector；Micro-capacitance sensor master controller and each micro-capacitance sensor in multiple micro-capacitance sensors
Micro-capacitance sensor controller is electrically connected；Micro-capacitance sensor controller is used to monitor the running status of micro-capacitance sensor and running status is sent to into micro- electricity
Net master controller, and the control instruction of micro-capacitance sensor master controller is received, transported with the pattern of being incorporated into the power networks, risk with controlling micro-capacitance sensor
Row mode, isolated power grid pattern, recovery be incorporated into the power networks one of pattern operational mode operation.Solve micro-capacitance sensor in correlation technique
The problem of the switching of operational mode can not be smoothly carried out, the steady switching of micro-capacitance sensor operational mode is realized.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of micro grid control system according to embodiments of the present invention；
Fig. 2 is the structural representation of micro-capacitance sensor master controller according to embodiments of the present invention；
Fig. 3 is the flow chart of micro-capacitance sensor operational mode control method according to embodiments of the present invention.
Specific embodiment
Below with reference to accompanying drawing and in conjunction with the embodiments describing the present invention in detail.It should be noted that not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
A kind of micro grid control system is provided in the present embodiment, and Fig. 1 is micro-capacitance sensor control according to embodiments of the present invention
The structural representation of system processed, as shown in figure 1, the system includes：Micro-capacitance sensor master controller 1, multiple micro-capacitance sensors 2；Wherein, it is multiple
Micro-capacitance sensor 2 is connected by transmission line of electricity 21 and interconnector 22；Micro-capacitance sensor master controller 1 and each micro- electricity in multiple micro-capacitance sensors 2
The micro-capacitance sensor controller 23 of net 2 is electrically connected；Micro-capacitance sensor controller 23 is used to monitor the running status of micro-capacitance sensor 2 and by running status
Micro-capacitance sensor master controller 1, and the control instruction of reception micro-capacitance sensor master controller 1 are sent to, to control micro-capacitance sensor 2 with grid-connected fortune
Row mode, risk operational mode, isolated power grid pattern, recovery be incorporated into the power networks one of pattern operational mode operation.
By said system, the embodiment of the present invention realizes the pattern of being incorporated into the power networks, risk operational mode, isolated power grid mould
Formula, recovery are incorporated into the power networks the cyclic switching of these four operational modes of pattern, because risk operational mode and recovery are incorporated into the power networks mould
The addition of formula, it is ensured that the steady switching of micro-capacitance sensor, improves the stability of micro-capacitance sensor operation.
Fig. 2 is the structural representation of micro-capacitance sensor master controller according to embodiments of the present invention, as shown in Fig. 2 micro-capacitance sensor is total
Controller includes：The mode control module that is incorporated into the power networks 210, risk operational mode control module 220, isolated power grid Schema control mould
Block 230, recovery are incorporated into the power networks mode control module 240.
Alternatively, micro-capacitance sensor master controller includes risk operational mode control module, risk operational mode control module bag
Include at least one of：First control module, for controlling the power flow direction between multiple micro-capacitance sensors；Second control module, uses
In control transmission line of electricity and power station load and exert oneself.
Alternatively, the first micro-capacitance sensor and the second micro-capacitance sensor are included in multiple micro-capacitance sensors, the first micro-capacitance sensor is got in touch with main electrical network,
In the case that second micro-capacitance sensor and the first micro-capacitance sensor are got in touch with, the first control module includes one below：First control unit, is used for
Main electrical network and the second micro-capacitance sensor are controlled respectively to the first micro-capacitance sensor through-put power；Second control unit, for control main electrical network to
First micro-capacitance sensor through-put power, the first micro-capacitance sensor is to the second micro-capacitance sensor through-put power；3rd control unit, it is micro- for control first
Electrical network is respectively to main electrical network and the second micro-capacitance sensor through-put power；4th control unit, it is micro- to first for controlling the second micro-capacitance sensor
Electrical grid transmission power, the first micro-capacitance sensor is to main electrical grid transmission power.
Alternatively, isolated power grid mode control module, goes out for one or more micro-capacitance sensor in multiple micro-capacitance sensors
In the case of existing failure, control multiple micro-capacitance sensors and isolated power grid pattern is switched to by risk operational mode.
Alternatively, isolated power grid mode control module includes：3rd control module, for occurring unit event in micro-capacitance sensor
In the case that barrier is out of service, the load of the micro-capacitance sensor is accordingly cut off, to maintain power-balance；4th control module, uses
In the case of occurring line fault tripping load in micro-capacitance sensor, exerting oneself for the micro-capacitance sensor is accordingly reduced, to maintain work(
Rate is balanced.
Alternatively, the mode control module that is incorporated into the power networks is recovered, for what is be all excluded in the failure of multiple micro-capacitance sensors
In the case of, control multiple micro-capacitance sensors and switch to recovery by isolated power grid pattern to be incorporated into the power networks pattern.
Alternatively, recovering the mode control module that is incorporated into the power networks includes：5th control module, for reducing multiple micro-capacitance sensors in
Voltage difference between each micro-capacitance sensor and main electrical network；6th control module, for adjusting multiple micro-capacitance sensors in each micro-capacitance sensor
Frequency so that frequency of the frequency of each micro-capacitance sensor less than main electrical network；7th control module, for adjusting multiple micro-capacitance sensors in it is every
The voltage of individual micro-capacitance sensor so that the phase place of the voltage of main electrical network in advance with the phase place of the voltage of each micro-capacitance sensor.
Alternatively, be incorporated into the power networks mode control module, is switched to by the recovery pattern of being incorporated into the power networks for controlling multiple micro-capacitance sensors
Be incorporated into the power networks pattern.
Based on above-mentioned micro grid control system, in the present embodiment there is provided a kind of micro-capacitance sensor operational mode controlling party
Method, Fig. 3 is the flow chart of micro-capacitance sensor operational mode control method according to embodiments of the present invention, as shown in figure 3, the flow process includes
Following steps：
Step S301, controls multiple micro-capacitance sensors and runs under the pattern of being incorporated into the power networks, and waits micro-capacitance sensor master controller to issue
Risk operational mode switching command, wherein, multiple micro-capacitance sensors be according to regional power grid topological structure divide；
Step S302, in the case where risk operational mode switching command is received, controls multiple micro-capacitance sensors by grid-connected fortune
Row mode switchs to risk operational mode；
Wherein, under risk operational mode, multiple micro-capacitance sensors perform risk operation control strategy and carry out isolated power grid to be sentenced
According to thinking that smooth transition is prepared to isolated power grid pattern.Risk operational mode be before the exceedingly odious weather such as typhoon arrives,
A kind of contingency mode entered in advance to prevent strong wind and heavy rain from causing power failure.Under risk operational mode, micro-capacitance sensor master controller
(equivalent to micro-capacitance sensor dispatching supplementary decision system) monitors the running status of each bar transmission line of electricity, monitors the load water in each power station
Gentle level of exerting oneself, operation isolated network criterion and relevant stable control strategy, input tripping operation output clamping is smooth transition to isolated network
Running status is prepared.
Before extreme weather is arrived, according to weather warning information and Risk-warning rank, dispatcher's input function of ordering goes out
Mouth pressing plate, and operational mode is set to into " risk operational mode " in micro-capacitance sensor master controller, system is gone to into Risk mode
Lower operation.In fully analysis and when investigating electrical network in typhoon early warning water power exert oneself with the basis of part throttle characteristics, with theoretical structure
The application functions such as optimal dispatch under Risk mode, safety on line early warning are built, micro-capacitance sensor master controller will be carried for operations staff
For operation reserve and suggestion, control section circuit and plant stand load and exert oneself, to ensure power grid operation and in interconnection
Isolated power grid pattern is steadily entered after tripping operation.
By above-mentioned steps, by micro-capacitance sensor from being incorporated into the power networks pattern switching to before isolated power grid pattern, by risk
Operational mode carries out transition, thinks that smooth transition is prepared to isolated power grid pattern, so as to solve correlation technique in micro-capacitance sensor
The problem of the switching of operational mode can not be smoothly carried out, the steady switching of micro-capacitance sensor operational mode is realized.
Alternatively, risk operation control strategy includes but is not limited at least one of：Control between multiple micro-capacitance sensors
Power flow direction；Control the load of transmission line of electricity and power station and exert oneself.
Alternatively, multiple micro-capacitance sensors include the first micro-capacitance sensor and the second micro-capacitance sensor, and the first micro-capacitance sensor is got in touch with main electrical network, the
Two micro-capacitance sensors and the first micro-capacitance sensor are got in touch with；The power flow direction controlled between multiple micro-capacitance sensors includes one below：1st, main electricity is controlled
Net and the second micro-capacitance sensor are respectively to the first micro-capacitance sensor through-put power；2nd, main electrical network is controlled to the first micro-capacitance sensor through-put power, first
Micro-capacitance sensor is to the second micro-capacitance sensor through-put power；3rd, the first micro-capacitance sensor is controlled respectively to main electrical network and the second micro-capacitance sensor through-put power；
4th, the second micro-capacitance sensor is controlled to the first micro-capacitance sensor through-put power, the first micro-capacitance sensor is to main electrical grid transmission power.
Four kinds of power flow direction modes are illustrated in the embodiment of the present invention, in a particular application, can be according to each micro-capacitance sensor
Load and exert oneself situation decision-making and select one of which power flow direction.
Alternatively, after controlling multiple micro-capacitance sensors and being switched to risk operational mode by the pattern of being incorporated into the power networks, in multiple micro- electricity
In the case that one or more micro-capacitance sensor in net breaks down, control multiple micro-capacitance sensors and isolated network is switched to by risk operational mode
Operational mode.For example, under Risk mode, micro-capacitance sensor master controller monitors the running status of the interconnection between each micro-capacitance sensor,
After isolated network criterion is met, automatically electrical network is resolved into into two little micro-capacitance sensors, that is, proceed to isolated power grid pattern.
Alternatively, isolated power grid pattern is included but is not limited to：Occurs unit failure situation out of service in micro-capacitance sensor
Under, the load of the micro-capacitance sensor is accordingly cut off, to maintain power-balance；Occurs line fault tripping load in micro-capacitance sensor
In the case of, exerting oneself for the micro-capacitance sensor is accordingly reduced, to maintain power-balance.
Under isolated power grid pattern, micro-capacitance sensor master controller is coordinated small power station and is gone out by running isolated network Stable Control Strategy
Power and micro-grid load, cut-out load realizes source lotus balance, it is ensured that the stable operation of micro-capacitance sensor and electrical network important load are not
Stop not black.
Under isolated power grid pattern, grid structure and load level differ widely with normal mode, and system impedance and short circuit are electric
Stream has bigger difference with normal mode.The relay protective plan during isolated power grid that the present invention is provided, micro-capacitance sensor master controller
After isolated power grid pattern is proceeded to, it is not required to make any modification to original protective relaying device, is performed by micro-capacitance sensor master controller
New relay protective plan, the circuit for isolated power grid provides relay protection function.
Alternatively, after controlling multiple micro-capacitance sensors and being switched to isolated power grid pattern by risk operational mode, in multiple micro- electricity
In the case that the failure of net has all been excluded, control multiple micro-capacitance sensors and switch to recovery by isolated power grid pattern to be incorporated into the power networks mould
Formula.Isolated power grid reliability and stability after major network interconnector failture evacuation, should as early as possible arrange operation not as being incorporated into the power networks
In county town isolated network be incorporated to major network.
Alternatively, recover the pattern of being incorporated into the power networks to include but is not limited to：
1st, the voltage difference in multiple micro-capacitance sensors between each micro-capacitance sensor and main electrical network is reduced.Isolated network is got over the voltage difference of major network
Little better, the fluctuation of frequency and power when voltage difference can cause grid-connected causes the unstable of system.
2nd, the frequency of each micro-capacitance sensor in multiple micro-capacitance sensors is adjusted so that frequency of the frequency of each micro-capacitance sensor less than main electrical network
Rate.The frequency of isolated network should be slightly less than the frequency of major network because the power of electrical network to flow to frequency from the high major network of frequency low
Isolated network, lowers the operating pressure of small power station in isolated network.Because both eventually run in same frequency, the low emergent power of frequency
Vacancy, will be filled by frequency is high.
3rd, the voltage of each micro-capacitance sensor in multiple micro-capacitance sensors is adjusted so that the phase place of the voltage of main electrical network is micro- with each in advance
The phase place of the voltage of electrical network.The voltage of major network must be ahead of isolated network voltage when grid-connected, because power is from the advanced electricity of phase place
Pressure flows to the voltage of delayed phase, reduces vibration during small power station's set grid-connection.
It is the recovered normal operation of rack after extreme weather to recover the pattern of being incorporated into the power networks, and is needed isolated network and master
A kind of grid-connected pattern of electrical network.Recover the process of being incorporated into the power networks and be divided into two stages：
1st, dispatcher sends grid-connected instruction by micro-capacitance sensor master controller to the first micro-capacitance sensor controller, first that this is first micro-
Electrical network is grid-connected with main electrical network.First micro-capacitance sensor controller performs grid-connected instruction, adjusts excitation system and the speed governing system in corresponding power station
System, makes same period point both end voltage and frequency reach same period requirement, and by itself synchronization function asynchronous switch-on is carried out；
2nd, after the first micro-capacitance sensor and the grid-connected success of main electrical network, dispatcher is by micro-capacitance sensor master controller to the second micro-capacitance sensor control
Device processed sends grid-connected instruction, and the second micro-capacitance sensor controller performs grid-connected instruction, adjusts excitation system and the speed governing system in corresponding power station
System, makes the second micro-capacitance sensor both end voltage and frequency reach same period requirement, and by itself synchronization function asynchronous switch-on is carried out.
Alternatively, it is incorporated into the power networks after pattern controlling multiple micro-capacitance sensors and switched to recovery by isolated power grid pattern, reaches simultaneously
After the indices of net are required, then can control multiple micro-capacitance sensors and the pattern of being incorporated into the power networks is switched to by the recovery pattern of being incorporated into the power networks.
So far, the pattern of being incorporated into the power networks, risk operational mode, isolated power grid pattern, recovery are realized in the embodiment of the present invention
The cyclic switching of the pattern that is incorporated into the power networks these four operational modes, due to risk operational mode and recovering be incorporated into the power networks pattern plus
Enter, it is ensured that the steady switching of micro-capacitance sensor, improve the stability of micro-capacitance sensor operation.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned enforcement
The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot
In the case of the former be more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing
The part that technology contributes can be embodied in the form of software product, and the computer software product is stored in a storage
In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that a station terminal equipment (can be mobile phone, calculate
Machine, server, or network equipment etc.) perform method described in each embodiment of the invention.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of micro grid control system, it is characterised in that include：Micro-capacitance sensor master controller, multiple micro-capacitance sensors；Wherein,
The plurality of micro-capacitance sensor is connected by transmission line of electricity and interconnector；
The micro-capacitance sensor master controller is electrically connected with the micro-capacitance sensor controller of each micro-capacitance sensor in the plurality of micro-capacitance sensor；It is described micro-
Power system controller is used to monitor the running status of micro-capacitance sensor and running status is sent to into the micro-capacitance sensor master controller, Yi Jijie
The control instruction of the micro-capacitance sensor master controller is received, to control micro-capacitance sensor with the pattern of being incorporated into the power networks, risk operational mode, isolated network fortune
Row mode, recovery be incorporated into the power networks one of pattern operational mode operation.
2. system according to claim 1, it is characterised in that the micro-capacitance sensor master controller includes risk operational mode control
Molding block, the risk operational mode control module includes at least one of：
First control module, for controlling the power flow direction between the plurality of micro-capacitance sensor；
Second control module, for controlling the load of transmission line of electricity and power station and exerting oneself.
3. system according to claim 2, it is characterised in that include the first micro-capacitance sensor and second in the plurality of micro-capacitance sensor
Micro-capacitance sensor, first micro-capacitance sensor is got in touch with main electrical network, in the case that second micro-capacitance sensor is got in touch with first micro-capacitance sensor,
First control module includes one below：
First control unit, work(is transmitted for controlling the main electrical network to first micro-capacitance sensor respectively with second micro-capacitance sensor
Rate；
Second control unit, for controlling the main electrical network to the first micro-capacitance sensor through-put power, first micro-capacitance sensor to
The second micro-capacitance sensor through-put power；
3rd control unit, for controlling first micro-capacitance sensor respectively to the main electrical network and second micro-capacitance sensor transmission work(
Rate；
4th control unit, for controlling second micro-capacitance sensor to the first micro-capacitance sensor through-put power, first micro- electricity
Net is to the main electrical grid transmission power.
4. system according to any one of claim 1 to 3, it is characterised in that the micro-capacitance sensor master controller also includes：
Isolated power grid mode control module, breaks down for one or more micro-capacitance sensor in the plurality of micro-capacitance sensor
In the case of, control the plurality of micro-capacitance sensor and isolated power grid pattern is switched to by risk operational mode.
5. system according to claim 4, it is characterised in that the isolated power grid mode control module includes：
3rd control module, for occur in micro-capacitance sensor unit failure it is out of service in the case of, accordingly cut off this micro-
The load of electrical network, to maintain power-balance；
4th control module, for occurring line fault tripping load in micro-capacitance sensor in the case of, accordingly reduce this micro-
Electrical network is exerted oneself, maintaining power-balance.
6. system according to claim 4, it is characterised in that the micro-capacitance sensor master controller also includes：
Recover the mode control module that is incorporated into the power networks, in the case of being all excluded in the failure of the plurality of micro-capacitance sensor,
Control the plurality of micro-capacitance sensor and switch to recovery by isolated power grid pattern to be incorporated into the power networks pattern.
7. system according to claim 6, it is characterised in that the recovery mode control module that is incorporated into the power networks includes：
5th control module, for reducing the plurality of micro-capacitance sensor in voltage difference between each micro-capacitance sensor and main electrical network；
6th control module, for adjusting the plurality of micro-capacitance sensor in each micro-capacitance sensor frequency so that the frequency of each micro-capacitance sensor
Frequency of the rate less than main electrical network；
7th control module, for adjusting the plurality of micro-capacitance sensor in each micro-capacitance sensor voltage so that the voltage of main electrical network
Phase place in advance with the phase place of the voltage of each micro-capacitance sensor.
8. system according to claim 6, it is characterised in that the micro-capacitance sensor master controller also includes：
Be incorporated into the power networks mode control module, switchs to be incorporated into the power networks by the recovery pattern of being incorporated into the power networks for controlling the plurality of micro-capacitance sensor
Pattern.
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| CN201610828031.5A CN106602719A (en) | 2016-09-18 | 2016-09-18 | Microgrid control system |
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