CN106712108A - Microgrid operation mode control method - Google Patents
Microgrid operation mode control method Download PDFInfo
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- CN106712108A CN106712108A CN201611189894.9A CN201611189894A CN106712108A CN 106712108 A CN106712108 A CN 106712108A CN 201611189894 A CN201611189894 A CN 201611189894A CN 106712108 A CN106712108 A CN 106712108A
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- capacitance sensor
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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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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a microgrid operation mode control method. The method comprises the following steps: controlling a plurality of microgrids to operate under a grid-connected operation mode, and waiting for a risk operation mode switching instruction issued by a microgrid total controller, wherein the plurality of microgrids are obtained through division based on a topological structure of a regional power grid; and under the condition of receiving the risk operation mode switching instruction, controlling the plurality of microgrids to switch from the grid-connected operation mode to a risk operation mode, wherein under the risk operation mode, the plurality of microgrids execute a risk operation control strategy and carry out isolated grid operation criteria to prepare for smooth transition to an isolated grid operation mode. The problem that smooth operation mode switching of a microgrid cannot be realized in the prior art is solved, and smooth switching of operation modes of the microgrid is realized.
Description
Technical field
The present invention relates to electric power network technique field, in particular to a kind of micro-capacitance sensor operational mode control method.
Background technology
With the development of social economy, along with increasingly sharpening for energy resource consumption, energy shortage, utilization rate be low and environment
Pollution also grows in intensity, and micro-capacitance sensor with it flexibly, efficiently, economic, environmental protection and energy is various etc. that advantage turns into 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 help to solve
The various problems that bulk power grid runs into, are the important components 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, it is necessary to one kind can rationally switch steadily under many operational mode environment of micro-capacitance sensor
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-capacitance sensor operational mode control method, can not with micro-capacitance sensor at least solving correlation technique
Smoothly carry out the problem of the switching of operational mode.
According to an aspect of the invention, there is provided a kind of micro-capacitance sensor operational mode control method, including：
The multiple micro-capacitance sensors of control run under the pattern of being incorporated into the power networks, and wait the risk that micro-capacitance sensor master controller is issued to run
Pattern switching is instructed, wherein, the multiple micro-capacitance sensor is divided according to the topological structure of regional power grid；
In the case where the risk operational mode switching command is received, the multiple micro-capacitance sensor is controlled by being incorporated into the power networks
Pattern switchs to risk operational mode；
Wherein, under the risk operational mode, the multiple micro-capacitance sensor performs risk operation control strategy and carries out orphan
Network operation criterion, thinks that smooth transition is prepared to isolated power grid pattern.
Alternatively, the risk operational mode switching command is that the micro-capacitance sensor master controller will in exceedingly odious weather
Issued during arriving.
Alternatively, the risk operation control strategy includes at least one of：
Control the power flow direction between the multiple micro-capacitance sensor；
Control the load of transmission line of electricity and power station and exert oneself.
Alternatively, the multiple micro-capacitance sensor includes the first micro-capacitance sensor and the second micro-capacitance sensor, first micro-capacitance sensor and main electricity
Net contact, second micro-capacitance sensor is got in touch with first micro-capacitance sensor；Control the power flow direction bag between the multiple micro-capacitance sensor
Include one below：
Control the main power network with second micro-capacitance sensor respectively to the first micro-capacitance sensor transimission power；
Control the main power network to the first micro-capacitance sensor transimission power, first micro-capacitance sensor is to second micro-capacitance sensor
Transimission power；
Control first micro-capacitance sensor respectively to the main power network and the second micro-capacitance sensor transimission power；
Control second micro-capacitance sensor to the first micro-capacitance sensor transimission power, first micro-capacitance sensor is to the main power network
Transimission power.
Alternatively, after controlling the multiple micro-capacitance sensor to switch to risk operational mode by the pattern of being incorporated into the power networks, the side
Method also includes：
In the case that one or more micro-capacitance sensor in the multiple micro-capacitance sensor breaks down, control the multiple micro-
Power network switchs to isolated power grid pattern by risk operational mode.
Alternatively, the isolated power grid pattern includes：
Occur in micro-capacitance sensor unit failure it is out of service in the case of, accordingly cut off the load of the micro-capacitance sensor, with
Maintain power-balance；
In the case of occurring line fault tripping load in micro-capacitance sensor, exerting oneself for the micro-capacitance sensor is accordingly reduced, with
Maintain power-balance.
Alternatively, after controlling the multiple micro-capacitance sensor to switch to isolated power grid pattern by risk operational mode, the side
Method also includes：
In the case where the failure of the multiple micro-capacitance sensor has all been excluded, the multiple micro-capacitance sensor is controlled to be transported by isolated network
Row mode switchs to recovery and is incorporated into the power networks pattern.
Alternatively, the recovery pattern of being incorporated into the power networks includes：
Reduce the voltage difference between each micro-capacitance sensor and main power network in the multiple micro-capacitance sensor；
Adjust the frequency of each micro-capacitance sensor in the multiple micro-capacitance sensor so that the frequency of each micro-capacitance sensor is less than main power network
Frequency；
Adjust the voltage of each micro-capacitance sensor in the multiple micro-capacitance sensor so that the phase of the voltage of main power network in advance and each
The phase of the voltage of micro-capacitance sensor.
Alternatively, switch to recovery by isolated power grid pattern in the multiple micro-capacitance sensor of control to be incorporated into the power networks after pattern, institute
Stating method also includes：
The multiple micro-capacitance sensor is controlled to switch to the pattern of being incorporated into the power networks by recovering the pattern of being incorporated into the power networks.
By the present invention, run under the pattern of being incorporated into the power networks using the multiple micro-capacitance sensors of control, and wait micro-capacitance sensor master control
The risk operational mode switching command that device is issued, wherein, multiple micro-capacitance sensors are to divide to form according to the topological structure of regional power grid
's；In the case where risk operational mode switching command is received, the multiple micro-capacitance sensors of control switch to risk by the pattern of being incorporated into the power networks
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, think the mode that smooth transition is prepared to isolated power grid pattern, micro-capacitance sensor can not smoothly enter in solving correlation technique
The problem of the switching of row operational mode, realizes the steady switching of micro-capacitance sensor operational mode.
Brief 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 hair
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 flow chart of micro-capacitance sensor operational mode control method according to embodiments of the present invention.
Specific embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.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-capacitance sensor operational mode control method is provided in the present embodiment, and Fig. 1 is according to embodiments of the present invention
The flow chart of micro-capacitance sensor operational mode control method, as shown in figure 1, the flow comprises the following steps：
Step S101, the multiple micro-capacitance sensors of control run under the pattern of being incorporated into the power networks, and wait 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 S102, in the case where risk operational mode switching command is received, the multiple micro-capacitance sensors of control are 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 for having a power failure and entering in advance to prevent strong wind and heavy rain from causing.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, runs isolated network criterion and relevant stable control strategy, and input tripping operation output clamping, is smooth transition to isolated network
Running status is prepared.
Before extreme weather arriving, 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 " risk operational mode " in micro-capacitance sensor master controller, system is gone into Risk mode
Lower operation.Fully analysis and investigation power network in typhoon early warning when water power exert oneself with the basis of part throttle characteristics, with theoretical structure
The application function such as optimal dispatch, safety on line early warning under Risk mode is 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
It is steady after tripping operation to enter isolated power grid pattern.
By above-mentioned steps, by micro-capacitance sensor from the pattern switching that is incorporated into the power networks 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 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.
Alternatively, risk operation control strategy includes but is not limited at least one of：Between the multiple micro-capacitance sensors of control
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 power network, the
Two micro-capacitance sensors and the first micro-capacitance sensor are got in touch with；Power flow direction between the multiple micro-capacitance sensors of control includes one below：1st, main electricity is controlled
Net and the second micro-capacitance sensor are respectively to the first micro-capacitance sensor transimission power；2nd, main power network is controlled to the first micro-capacitance sensor transimission power, first
Micro-capacitance sensor is to the second micro-capacitance sensor transimission power；3rd, the first micro-capacitance sensor of control is respectively to main power network and the second micro-capacitance sensor transimission power；
4th, to the first micro-capacitance sensor transimission power, the first micro-capacitance sensor is to main electrical grid transmission power for the second micro-capacitance sensor of control.
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 selection one of which power flow direction.
Alternatively, after the multiple micro-capacitance sensors of control are 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, the multiple micro-capacitance sensors of control switch to isolated network 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, power network is resolved into two small micro-capacitance sensors automatically, that is, be transferred 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 realize source lotus balance, it is ensured that the stable operation of micro-capacitance sensor and power 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 transferred 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, for the circuit of isolated power grid provides relay protection function.
Alternatively, after the multiple micro-capacitance sensors of control switch 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, the multiple micro-capacitance sensors of control switch to recovery and are incorporated into the power networks mould by isolated power grid pattern
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 the multiple micro-capacitance sensors of reduction between each micro-capacitance sensor and main power network.Isolated network is got over the voltage difference of major network
Small 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 power network
Rate.The frequency of isolated network should be slightly less than the frequency of major network because the power of power network to flow to frequency from frequency major network high 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 of the voltage of main power network is micro- with each in advance
The phase of the voltage of power 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
Pressure flows to the voltage of delayed phase, reduces vibration during small power station's set grid-connection.
It is that after extreme weather, the recovered normal operation of rack is, it is necessary to by isolated network and master to recover the pattern of being incorporated into the power networks
A kind of grid-connected pattern of power 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-
Power network is grid-connected with main power 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 asynchronous switch-on is carried out by itself synchronization function；
2nd, after the first micro-capacitance sensor and the grid-connected success of main power 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 asynchronous switch-on is carried out by itself synchronization function.
Alternatively, switch to recovery by isolated power grid pattern in the multiple micro-capacitance sensors of control to be incorporated into the power networks after pattern, reach simultaneously
After the indices requirement of net, then multiple micro-capacitance sensors can be controlled to switch to the pattern of being incorporated into the power networks by recovering the 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 implementation
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 implementation method.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 computer software product storage is in a storage
In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are used to 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, is not intended to limit the invention, 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 (9)
1. a kind of micro-capacitance sensor operational mode control method, it is characterised in that including：
The multiple micro-capacitance sensors of control run under the pattern of being incorporated into the power networks, and wait the risk operational mode that micro-capacitance sensor master controller issues
Switching command, wherein, the multiple micro-capacitance sensor is divided according to the topological structure of regional power grid；
In the case where the risk operational mode switching command is received, the multiple micro-capacitance sensor is controlled by the pattern of being incorporated into the power networks
Switch to risk operational mode；
Wherein, under the risk operational mode, the multiple micro-capacitance sensor performs risk operation control strategy and carries out isolated network fortune
Row criterion, thinks that smooth transition is prepared to isolated power grid pattern.
2. method according to claim 1, it is characterised in that the risk operational mode switching command is the micro-capacitance sensor
What master controller was issued when exceedingly odious weather is coming.
3. method according to claim 1, it is characterised in that the risk operation control strategy include it is following at least it
One：
Control the power flow direction between the multiple micro-capacitance sensor；
Control the load of transmission line of electricity and power station and exert oneself.
4. method according to claim 3, it is characterised in that the multiple micro-capacitance sensor includes the first micro-capacitance sensor and second micro-
Power network, first micro-capacitance sensor is got in touch with main power network, and second micro-capacitance sensor is got in touch with first micro-capacitance sensor；Control is described more
Power flow direction between individual micro-capacitance sensor includes one below：
Control the main power network with second micro-capacitance sensor respectively to the first micro-capacitance sensor transimission power；
Control the main power network to the first micro-capacitance sensor transimission power, first micro-capacitance sensor is transmitted to second micro-capacitance sensor
Power；
Control first micro-capacitance sensor respectively to the main power network and the second micro-capacitance sensor transimission power；
Control second micro-capacitance sensor to the first micro-capacitance sensor transimission power, first micro-capacitance sensor is to the main electrical grid transmission
Power.
5. method according to any one of claim 1 to 4, it is characterised in that controlling the multiple micro-capacitance sensor by simultaneously
Network operation pattern switchs to after risk operational mode, and methods described also includes：
In the case that one or more micro-capacitance sensor in the multiple micro-capacitance sensor breaks down, the multiple micro-capacitance sensor is controlled
Isolated power grid pattern is switched to by risk operational mode.
6. method according to claim 5, it is characterised in that the isolated power grid pattern includes：
Occur in micro-capacitance sensor unit failure it is out of service in the case of, accordingly cut off the load of the micro-capacitance sensor, with maintain
Power-balance；
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
Power-balance.
7. method according to claim 5, it is characterised in that turned by risk operational mode the multiple micro-capacitance sensor is controlled
After for isolated power grid pattern, methods described also includes：
In the case where the failure of the multiple micro-capacitance sensor has all been excluded, the multiple micro-capacitance sensor is controlled by isolated power grid mould
Formula switchs to recovery and is incorporated into the power networks pattern.
8. method according to claim 7, it is characterised in that the recovery pattern of being incorporated into the power networks includes：
Reduce the voltage difference between each micro-capacitance sensor and main power network in the multiple micro-capacitance sensor；
Adjust the frequency of each micro-capacitance sensor in the multiple micro-capacitance sensor so that frequency of the frequency of each micro-capacitance sensor less than main power network
Rate；
Adjust the voltage of each micro-capacitance sensor in the multiple micro-capacitance sensor so that the phase of the voltage of main power network in advance with each micro- electricity
The phase of the voltage of net.
9. method according to claim 7, it is characterised in that turned by isolated power grid pattern the multiple micro-capacitance sensor is controlled
To recover to be incorporated into the power networks after pattern, methods described also includes：
The multiple micro-capacitance sensor is controlled to switch to the pattern of being incorporated into the power networks by recovering the pattern of being incorporated into the power networks.
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| CN201611189894.9A CN106712108A (en) | 2016-12-21 | 2016-12-21 | Microgrid operation mode control method |
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| CN201611189894.9A CN106712108A (en) | 2016-12-21 | 2016-12-21 | Microgrid operation mode control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109784775A (en) * | 2019-02-26 | 2019-05-21 | 国网山东省电力公司莒县供电公司 | A kind of micro-grid system dispatching method and device |
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| CN105429297A (en) * | 2015-12-07 | 2016-03-23 | 海南电力技术研究院 | Multi-operation mode controlling and switching method for micro-grid |
| CN105680449A (en) * | 2016-04-01 | 2016-06-15 | 中国地质大学（北京） | Comprehensive coordination control method of photovoltaic power generation microgrid having weather prediction function |
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| CN105071443A (en) * | 2015-07-17 | 2015-11-18 | 上海电机学院 | Distributed power supply grid connection control method |
| CN105429297A (en) * | 2015-12-07 | 2016-03-23 | 海南电力技术研究院 | Multi-operation mode controlling and switching method for micro-grid |
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Application publication date: 20170524 |