CN105429297A - Multi-operation mode controlling and switching method for micro-grid - Google Patents
Multi-operation mode controlling and switching method for micro-grid Download PDFInfo
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- CN105429297A CN105429297A CN201510900712.3A CN201510900712A CN105429297A CN 105429297 A CN105429297 A CN 105429297A CN 201510900712 A CN201510900712 A CN 201510900712A CN 105429297 A CN105429297 A CN 105429297A
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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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- 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
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- 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 discloses a multi-operation mode controlling and switching method for a micro-grid. The method comprises the following steps: dividing an operation mode of the micro-grid into a normal grid-connected operation mode of the micro-grid, a risk operation mode of the micro-grid, a weak connection operation mode of the micro-grid, an isolated grid operation mode of the micro-grid and a micro-grid operation recovery mode; determining control strategies under various operation modes of the micro-grid; determining switching strategies among the operation modes of the micro-grid; and controlling the operation modes of the micro-grid to be switched when determining that corresponding trigger conditions are met. Subdivision is carried out on the operation modes of the micro-grid for the first time; and conversion among the modes is considered. Aiming at a regional micro-grid comprising small hydropower stations, the multi-operation mode controlling and switching method can be applied to the micro-grid comprising various renewable distributed power sources; no power loss of an important load can be effectively ensured; and the targets of reasonably utilizing renewable energy sources and effectively utilizing clean energy sources are achieved.
Description
Technical field
The present invention relates to electric power network technique field, particularly relate to the method that the many operational modes of a kind of micro-capacitance sensor control and switch.
Background technology
Along with socioeconomic development, increasingly sharpening along with energy resource consumption, low and the environmental pollution of energy shortage, utilance also grows in intensity, and micro-capacitance sensor with it flexibly, efficient, economy, environmental protection and the energy is various etc. that advantage becomes development power industry, solves the main strategic means of energy problem.Micro-capacitance sensor can integrate the generating of a large amount of distributed new, and contributing to the various problems that solution bulk power grid runs into, is the important component part of power distribution network in following intelligent grid.
It is of paramount importance problem in micro-capacitance sensor research field that micro-capacitance sensor runs control, its research contents contains access and the control in distributed power station, the micro-capacitance sensor such as the operation control strategy of micro-capacitance sensor and micro-grid operation mode conversion run control technology, based on the control method of many operational modes control strategy various distributed power source, energy storage device and load in micro-capacitance sensor, coordination tissue in research micro-capacitance sensor between each power consumption equipment and automatic operation reserve, the strategy mutually switched between the many operational modes of main research is that micro-capacitance sensor runs the core content controlled.
The operation of micro-capacitance sensor controls must be had in the grid-connected ability with steady switching under decoupled mode, and existing micro-capacitance sensor runs, and be mostly the direct switching of two kinds of patterns, switchover policy is single, fluctuation of service.In order to realize micro-capacitance sensor two kinds of typical operational modes (grid-connect mode and island mode) between steady switching, need a kind of operation reserve that rationally can switch smooth transition under micro-capacitance sensor many operational modes environment, thus improve the power supply reliability of micro-capacitance sensor, make the low-carbon environment-friendly energy and realize sustainable development.
Summary of the invention
For solving the technical problem of existing existence, the embodiment of the present invention provides a kind of micro-capacitance sensor method that many operational modes control and switch.
For achieving the above object, the technical scheme of the embodiment of the present invention is achieved in that
The method that the many operational modes of micro-capacitance sensor control and switch, described method comprises:
Micro-capacitance sensor operational mode is divided into normally be incorporated into the power networks pattern, micro-capacitance sensor risk operational mode, micro-capacitance sensor Weak link operational mode, micro-capacitance sensor isolated power grid pattern and micro-capacitance sensor of micro-capacitance sensor to resume operation pattern;
Determine the control strategy under each micro-capacitance sensor operational mode: under described micro-capacitance sensor is normally incorporated into the power networks pattern, determine the optimisation strategy of electrical network; Under described micro-capacitance sensor risk operational mode, determine the control strategy of the power delivery keeping system safe operation according to interconnection; Under described micro-capacitance sensor isolated power grid pattern, when running comparatively fragile, there is power station because of when accident is out of service or have the load of circuit to increase and decrease suddenly, determine the safe and stable operation control strategy of isolated power grid pattern; To resume operation pattern at described micro-capacitance sensor, start fast under determining fault mode and with the control strategy of major network system grid connection;
Determine the strategy switched between each micro-capacitance sensor operational mode: control micro-capacitance sensor operational mode when determining to meet corresponding trigger condition and switch.
Wherein, determine to comprise the control strategy that micro-capacitance sensor is normally incorporated into the power networks under pattern: analyze and the basic data of pickup area electrical network, the power producing characteristics of analyzed area small power station; By analyzing the relevance of exerting oneself of small power station under the power producing characteristics under small power station's historical data of exerting oneself and all kinds of weather, same basin, the space-time power producing characteristics of analyzed area micro-capacitance sensor small power station and the mechanism of reciprocal effect, obtain its typical case to exert oneself feature, and set up the power producing characteristics model of corresponding area; The power producing characteristics analysis result of obtained small power station and region micro-grid load data are integrated; Complementary characteristic between exerting oneself according to the regulating power of dissimilar equipment and specific small power station and different electrical power type, analyzed area small hydropower system concerted mechanism, sets up the interactive coordination system between the small power station of region; Build optimal dispatch and safety on line early warning under normal mode, realize Optimized Operation and the energy management of small power station under present mode, reach the maximization that small power station utilizes, form the optimisation strategy of economical operation.
Wherein, determine the control strategy under micro-capacitance sensor risk operational mode, comprising: the control strategy determining the power delivery keeping system safe operation according to interconnection; Determine the trigger condition proceeding to Risk mode; Micro-capacitance sensor stability control device monitoring substation service entrance switch signal, in time initiatively from network operation; Real-time formulation prediction scheme, according to the power scale of electric power incoming line, needs the inessential load got rid of under determining described micro-capacitance sensor risk operational mode.
Wherein, determine the control strategy under micro-capacitance sensor Weak link operational mode, comprise: form Weak link pattern and region micro-capacitance sensor low-pressure side is interconnected, under described micro-capacitance sensor Weak link operational mode, for the power-balance of each little micro-capacitance sensor self, the transmission power restriction of circuit and important load, carry out the pattern analysis of micro-capacitance sensor Weak link.
Wherein, determine the control strategy under micro-capacitance sensor isolated power grid pattern, comprise: for small power station in regional power grid at isolated power grid condition characteristic, take into account the multiple factors affecting complementary Influencing Mechanism in small power station's power, operation characteristic and group, analyze power output change and the operation characteristic of various monomer small power station, determine the coordination law between small hydropower system, obtain corresponding connection strategy, make important load not dead electricity in isolated power grid situation; The safe and stable operation control strategy of described orphan's net comprises small power station and automatically enters frequency modulation control state, and micro-capacitance sensor controller, according to the demand of steady control strategy, excises partial line road when ensureing lonely net stable operation.
Wherein, determine to comprise the control strategy that micro-capacitance sensor resumes operation under pattern: determine to start fast in a failure mode and with the strategy of major network system grid connection; Decision Support System sends grid-connected instruction; Transformer station performs described grid-connected instruction to micro-capacitance sensor Intelligent Synchronization closing device, the deviation of described micro-capacitance sensor Intelligent Synchronization closing device is sent to hydroelectric station simultaneously.
Wherein, described micro-capacitance sensor normally the pattern of being incorporated into the power networks go to the trigger condition of micro-capacitance sensor risk operational mode: initiatively plan off-grid or burst accident; Described micro-capacitance sensor risk operational mode goes to the trigger condition of micro-capacitance sensor Weak link operational mode: inlet wire dead electricity, high-pressure side power-off, and low-pressure side is interconnected; Described micro-capacitance sensor isolated power grid pattern goes to micro-capacitance sensor and to resume operation the trigger condition of pattern: manually plan to intervene; The described micro-capacitance sensor pattern of resuming operation goes to the trigger condition of micro-grid connection operational mode: micro-capacitance sensor simultaneous interconnecting.
Compared with prior art, the beneficial effect of the embodiment of the present invention is:
(1) first micro-capacitance sensor operational mode is carefully divided into normally be incorporated into the power networks pattern, micro-capacitance sensor risk operational mode (and turn lonely), micro-capacitance sensor Weak link mode operation, micro-capacitance sensor isolated power grid pattern and micro-capacitance sensor of micro-capacitance sensor to resume operation pattern (fast power restoration turns also with lonely), and considers its conversion each other.
(2) for the region micro-capacitance sensor containing small hydropower system, also can be applied to the micro-capacitance sensor containing various renewable distributed power source, can effectively reliably be applied to micro-capacitance sensor multi-mode operation, for dispatcher provides valuable reference.
(3) reliability for region important load provides beneficial reference, effectively can ensure the not dead electricity of important load.
(4) Appropriate application regenerative resource, and effectively utilize clean energy resource.
Accompanying drawing explanation
In accompanying drawing (it is not necessarily drawn in proportion), similar Reference numeral can describe similar parts in different views.The similar reference numerals with different letter suffix can represent the different examples of similar parts.Accompanying drawing generally shows each embodiment discussed herein by way of example and not limitation.
Fig. 1 is the flow chart of the method for the many operational mode control of embodiment of the present invention micro-capacitance sensor and switching;
Fig. 2 is the concrete enforcement schematic diagram of the method for the control of embodiment of the present invention micro-capacitance sensor many operational modes and switching.
Embodiment
The embodiment of the present invention relates to the method that the many operational modes of a kind of micro-capacitance sensor containing small hydropower system control and switch, comprise region micro-capacitance sensor investigation and analysis, determine small power station's operation characteristic, determine region micro-capacitance sensor reference load distribution, determine that operational mode is classified, determine the content under each operational mode, determine the trigger condition that each operational mode switches mutually, and finally determine the strategy that many operational modes control and switch.The embodiment of the present invention is for the feature of region micro-capacitance sensor, propose many classification of operational mode, and analyze for each operational mode, useful strategy reference is provided to the mutual switching between each pattern, and for important load not dead electricity provide effective guarantee, and provide beneficial reference for dispatcher.
As shown in Figure 1, the embodiment of the present invention controls and changing method containing the many operational modes of micro-capacitance sensor of small hydropower system, can comprise the following steps:
Step 101: micro-capacitance sensor operational mode is divided into normally be incorporated into the power networks pattern, micro-capacitance sensor risk operational mode, micro-capacitance sensor Weak link operational mode, micro-capacitance sensor isolated power grid pattern and micro-capacitance sensor of micro-capacitance sensor and resumes operation pattern;
Step 102: determine the control strategy under each micro-capacitance sensor operational mode;
Under described micro-capacitance sensor is normally incorporated into the power networks pattern, determine the optimisation strategy of electrical network;
Under described micro-capacitance sensor risk operational mode, determine the control strategy of the power delivery keeping system safe operation according to interconnection;
Under described micro-capacitance sensor isolated power grid pattern, when running comparatively fragile, there is power station because of when accident is out of service or have the load of circuit to increase and decrease suddenly, determine the safe and stable operation control strategy of isolated power grid pattern;
To resume operation pattern at described micro-capacitance sensor, start fast under determining fault mode and with the control strategy of major network system grid connection;
Step 103: determine the strategy switched between each micro-capacitance sensor operational mode: control micro-capacitance sensor operational mode when determining to meet corresponding trigger condition and switch.
Concrete, the implementation concrete for different patterns is as follows:
1, the normal mistake of micro-capacitance sensor is incorporated into the power networks pattern
Roughly flow process: obtain the relevant information of the relevant information → collection grid-connected system economical operation of micro-capacitance sensor architectural framework → carry out the decision-making of micro-capacitance sensor intelligent scheduling and checking.Specifically can comprise following step:
Step a1: the basis of fully analyzing and investigating regional power grid, the power producing characteristics of analyzed area small power station; By analyzing the relevance of exerting oneself of small power station under the power producing characteristics under small power station's historical data of exerting oneself and each quasi-representative weather, same basin, the space-time power producing characteristics of analyzed area micro-capacitance sensor small power station and the mechanism of reciprocal effect, obtain its typical case to exert oneself feature, and set up the power producing characteristics model of corresponding area.
Step a2: power producing characteristics analysis result and the region micro-grid load data of small power station step 101 obtained are integrated; Complementary characteristic between exerting oneself according to the regulating power of dissimilar equipment and specific small power station and different electrical power type, analyzed area small hydropower system concerted mechanism, sets up the interactive coordination system between the small power station of region.
Step a3: on the basis of step 101 ~ 102, the application such as optimal dispatch, safety on line early warning under structure normal mode, carry out Optimized Operation and the complex energy management of small power station under this pattern, reach the maximization that small power station utilizes and the power supply reliability ensureing region micro-capacitance sensor, form the optimisation strategy of economical operation further.
2, micro-capacitance sensor risk operational mode (and turning lonely)
Roughly flow process: obtain the relevant information of relevant information → collections risk operational mode operation of micro-capacitance sensor architectural framework → carry out the decision-making of micro-capacitance sensor intelligent scheduling and checking.Concrete, following step can be comprised:
Step b1: according to the control strategy of the power delivery keeping system safe operation of interconnection.
Step b2: determine the trigger condition proceeding to Risk mode: according to the artificial conversion regime of weather information.
Step b3: micro-capacitance sensor stability control device monitoring substation service entrance switch signal, in time initiatively from network operation.
Step b4: formulate prediction scheme in real time, according to the power scale of electric power incoming line, determines and needs the inessential load that gets rid of after turning orphan; Retain a power supply, the load of important load and balance.
Under Risk mode, according to the Risk-warning rank that weather forecast and grid company are issued, under forwarding system to Risk mode, by providing the mode of Proposals, for dispatcher's reference.
3, micro-capacitance sensor Weak link mode operation
Roughly flow process: obtaining micro-capacitance sensor Weak link may relevant information → the determine micro-capacitance sensor Weak link mode operation control strategy → carry out the decision-making of micro-capacitance sensor intelligent scheduling and checking of relevant information → collection micro-capacitance sensor Weak link grid connection security operational mode of framework.
Particularly, under complex environment, the more possible disengaging bulk power grid of region micro-capacitance sensor, also can be interconnected for region micro-capacitance sensor low-pressure side can be made, form Weak link pattern, in such a mode, consider the power-balance of each little micro-capacitance sensor self, the transmission power of circuit limits and to important load reliability, carries out the pattern analysis of micro-capacitance sensor Weak link.
4, micro-capacitance sensor isolated power grid pattern
Roughly flow process: obtain the relevant information of the lonely net system safety operation of the relevant information of micro-capacitance sensor architectural framework → gather → carry out micro-capacitance sensor isolated power grid scheduling decision and checking.
Particularly, for small power station in regional power grid at isolated power grid condition characteristic, take into account the small power station's power characteristic under many influencing factors such as Hydropower Unit type, capacity, precipitation, runoff, balancing reservoir storage capacity, in operation characteristic and group, complementary Influencing Mechanism studies power output change and the operation characteristic of various monomer small power station, explores the coordination law between small hydropower system; Obtain corresponding connection strategy, realize in isolated power grid situation, ensure important load not dead electricity.
Further, the safe and stable operation control strategy that described orphan nets specifically comprises small power station and automatically enters frequency modulation control state; Micro-capacitance sensor controller, according to the demand of steady control strategy, excising partial line road when ensureing lonely net stable operation, avoiding the jumbo vibration of micro-grid system.
5, micro-capacitance sensor resumes operation pattern (fast power restoration with lonely turn also)
Roughly flow process: the relevant information → collection obtaining micro-capacitance sensor architectural framework is resumed operation the relevant information of mode operation → carry out micro-capacitance sensor stable operation experiment and checking.Concrete, comprise following step:
Step c1: determine quick startup in a failure mode and the strategy with major network system grid connection.
Step c2: Decision Support System sends grid-connected instruction.
Step c3: transformer station performs described grid-connected instruction to micro-capacitance sensor Intelligent Synchronization closing device, the deviation of micro-capacitance sensor Intelligent Synchronization closing device is sent to hydroelectric station simultaneously.
Step c4: enter the pattern of being incorporated into the power networks, stability control device drops into cut load and circuit.
Particularly, described quick startup and comprising with the strategy of major network system grid connection: Decision Support System sends grid-connected instruction; Controller performs grid-connected instruction to micro-capacitance sensor Intelligent Synchronization closing device; Enter the pattern of being incorporated into the power networks, again definite value is not set to protective device, go to jump corresponding circuit by the tripping operation outlet of protective device, in controller, realize defencive function and perform.
Particularly, as shown in Figure 2, the described pattern of being incorporated into the power networks goes to risk operational mode trigger condition) initiatively plan off-grid or burst accident.It is inlet wire dead electricity that risk operational mode goes to Weak link operational mode trigger condition, high-pressure side power-off, and low-pressure side is interconnected; Isolated power grid pattern goes to pattern trigger condition of resuming operation and intervenes for manually planning; It is micro-capacitance sensor simultaneous interconnecting that the pattern of resuming operation goes to the pattern trigger condition of being incorporated into the power networks.
In the embodiment of the present invention, by micro-capacitance sensor in grid-connected economical operation, lonely net safe and stable operation, and turn a lonely smooth transition and control, fast power restoration and lonely turn and etc. the research of many operational modes strategy, controlling the multimodal control objectives of micro-capacitance sensor.Determine the optimisation strategy of electrical network under grid-connected economic model; Determine the control strategy based on the power delivery keeping system safe operation of interconnection under risk operational mode (and turn lonely); Under isolated power grid pattern, when system cloud gray model is comparatively fragile, the safe and stable operation control strategy of lonely net, because of when accident is out of service or the load of certain circuit increases and decreases suddenly, is determined in certain power station; In recovery mode (fast power restoration with lonely turn also), determine quick startup in a failure mode and with major network system grid connection.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (7)
1. a method for the many operational mode control of micro-capacitance sensor and switching, it is characterized in that, described method comprises:
Micro-capacitance sensor operational mode is divided into normally be incorporated into the power networks pattern, micro-capacitance sensor risk operational mode, micro-capacitance sensor Weak link operational mode, micro-capacitance sensor isolated power grid pattern and micro-capacitance sensor of micro-capacitance sensor to resume operation pattern;
Determine the control strategy under each micro-capacitance sensor operational mode: under described micro-capacitance sensor is normally incorporated into the power networks pattern, determine the optimisation strategy of electrical network; Under described micro-capacitance sensor risk operational mode, determine the control strategy of the power delivery keeping system safe operation according to interconnection; Under described micro-capacitance sensor isolated power grid pattern, when running comparatively fragile, there is power station because of when accident is out of service or have the load of circuit to increase and decrease suddenly, determine the safe and stable operation control strategy of isolated power grid pattern; To resume operation pattern at described micro-capacitance sensor, start fast under determining fault mode and with the control strategy of major network system grid connection;
Determine the strategy switched between each micro-capacitance sensor operational mode: control micro-capacitance sensor operational mode when determining to meet corresponding trigger condition and switch.
2. method according to claim 1, is characterized in that, determines to comprise the control strategy that micro-capacitance sensor is normally incorporated into the power networks under pattern:
Analyze and the basic data of pickup area electrical network, the power producing characteristics of analyzed area small power station;
By analyzing the relevance of exerting oneself of small power station under the power producing characteristics under small power station's historical data of exerting oneself and all kinds of weather, same basin, the space-time power producing characteristics of analyzed area micro-capacitance sensor small power station and the mechanism of reciprocal effect, obtain its typical case to exert oneself feature, and set up the power producing characteristics model of corresponding area;
The power producing characteristics analysis result of obtained small power station and region micro-grid load data are integrated; Complementary characteristic between exerting oneself according to the regulating power of dissimilar equipment and specific small power station and different electrical power type, analyzed area small hydropower system concerted mechanism, sets up the interactive coordination system between the small power station of region;
Build optimal dispatch and safety on line early warning under normal mode, realize Optimized Operation and the energy management of small power station under present mode, reach the maximization that small power station utilizes, form the optimisation strategy of economical operation.
3. method according to claim 1, is characterized in that, determines the control strategy under micro-capacitance sensor risk operational mode, comprising:
Determine the control strategy of the power delivery keeping system safe operation according to interconnection;
Determine the trigger condition proceeding to Risk mode;
Micro-capacitance sensor stability control device monitoring substation service entrance switch signal, in time initiatively from network operation;
Real-time formulation prediction scheme, according to the power scale of electric power incoming line, needs the inessential load got rid of under determining described micro-capacitance sensor risk operational mode.
4. method according to claim 1, is characterized in that, determines the control strategy under micro-capacitance sensor Weak link operational mode, comprising:
Forming Weak link pattern makes region micro-capacitance sensor low-pressure side be interconnected, and under described micro-capacitance sensor Weak link operational mode, for the power-balance of each little micro-capacitance sensor self, the transmission power restriction of circuit and important load, carries out the pattern analysis of micro-capacitance sensor Weak link.
5. method according to claim 1, is characterized in that, determines the control strategy under micro-capacitance sensor isolated power grid pattern, comprising:
For small power station in regional power grid at isolated power grid condition characteristic, take into account the multiple factors affecting complementary Influencing Mechanism in small power station's power, operation characteristic and group, analyze power output change and the operation characteristic of various monomer small power station, determine the coordination law between small hydropower system, obtain corresponding connection strategy, make important load not dead electricity in isolated power grid situation;
The safe and stable operation control strategy of described orphan's net comprises small power station and automatically enters frequency modulation control state, and micro-capacitance sensor controller, according to the demand of steady control strategy, excises partial line road when ensureing lonely net stable operation.
6. method according to claim 1, is characterized in that, determines to comprise the control strategy that micro-capacitance sensor resumes operation under pattern:
Determine quick startup and the strategy with major network system grid connection in a failure mode;
Decision Support System sends grid-connected instruction;
Transformer station performs described grid-connected instruction to micro-capacitance sensor Intelligent Synchronization closing device, the deviation of described micro-capacitance sensor Intelligent Synchronization closing device is sent to hydroelectric station simultaneously.
7. method according to claim 1, is characterized in that,
The described micro-capacitance sensor normally pattern of being incorporated into the power networks goes to the trigger condition of micro-capacitance sensor risk operational mode: initiatively plan off-grid or burst accident;
Described micro-capacitance sensor risk operational mode goes to the trigger condition of micro-capacitance sensor Weak link operational mode: inlet wire dead electricity, high-pressure side power-off, and low-pressure side is interconnected;
Described micro-capacitance sensor isolated power grid pattern goes to micro-capacitance sensor and to resume operation the trigger condition of pattern: manually plan to intervene;
The described micro-capacitance sensor pattern of resuming operation goes to the trigger condition of micro-grid connection operational mode: micro-capacitance sensor simultaneous interconnecting.
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| CN106602719A (en) * | 2016-09-18 | 2017-04-26 | 海南电力技术研究院 | Microgrid control system |
| CN106684868A (en) * | 2017-02-23 | 2017-05-17 | 南京航空航天大学 | Electric power distribution method of hierarchical Internet micro-grid |
| CN106712108A (en) * | 2016-12-21 | 2017-05-24 | 海南电力技术研究院 | Microgrid operation mode control method |
| CN107093910A (en) * | 2017-05-09 | 2017-08-25 | 南京软核科技有限公司 | A kind of lower multi-mode micro-capacitance sensor controller of new energy access containing small power station |
| CN110581553A (en) * | 2019-09-26 | 2019-12-17 | 深圳天顺智慧能源科技有限公司 | Off-grid autonomous operation method and device for micro-grid system and micro-grid system |
| WO2020091604A1 (en) * | 2018-10-29 | 2020-05-07 | Nordic Itech As | A safety device and a method of using same |
| CN112134311A (en) * | 2020-09-15 | 2020-12-25 | 广东电网有限责任公司韶关供电局 | Control method, device, equipment and storage medium for small hydropower station power grid |
| CN113708412A (en) * | 2021-10-09 | 2021-11-26 | 北方工业大学 | Weak connection structure and method for micro-grid group and low-voltage distribution network |
| WO2022031157A1 (en) | 2020-08-03 | 2022-02-10 | Univcersité Ibn Tofail | Method for controlling voltage source inverters to provide flexibility to ac electrical microgrids |
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| CN107093910A (en) * | 2017-05-09 | 2017-08-25 | 南京软核科技有限公司 | A kind of lower multi-mode micro-capacitance sensor controller of new energy access containing small power station |
| CN107093910B (en) * | 2017-05-09 | 2020-02-18 | 南京软核科技有限公司 | Multi-mode microgrid controller under new energy access containing small hydropower stations |
| WO2020091604A1 (en) * | 2018-10-29 | 2020-05-07 | Nordic Itech As | A safety device and a method of using same |
| CN110581553A (en) * | 2019-09-26 | 2019-12-17 | 深圳天顺智慧能源科技有限公司 | Off-grid autonomous operation method and device for micro-grid system and micro-grid system |
| WO2022031157A1 (en) | 2020-08-03 | 2022-02-10 | Univcersité Ibn Tofail | Method for controlling voltage source inverters to provide flexibility to ac electrical microgrids |
| CN112134311A (en) * | 2020-09-15 | 2020-12-25 | 广东电网有限责任公司韶关供电局 | Control method, device, equipment and storage medium for small hydropower station power grid |
| CN113708412A (en) * | 2021-10-09 | 2021-11-26 | 北方工业大学 | Weak connection structure and method for micro-grid group and low-voltage distribution network |
| CN113708412B (en) * | 2021-10-09 | 2023-09-15 | 北方工业大学 | Weak connection structure and method for micro-grid group and low-voltage power distribution network |
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