CN107834605A - A kind of microgrid power surplus excision control method and system - Google Patents
A kind of microgrid power surplus excision control method and system Download PDFInfo
- Publication number
- CN107834605A CN107834605A CN201711266305.7A CN201711266305A CN107834605A CN 107834605 A CN107834605 A CN 107834605A CN 201711266305 A CN201711266305 A CN 201711266305A CN 107834605 A CN107834605 A CN 107834605A
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- power
- micro
- capacitance sensor
- surplus
- power surplus
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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
-
- 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
- H02J3/48—Controlling the sharing of the in-phase component
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a kind of microgrid power surplus excision control method and system, contributed according to the current active power output calculated and the adjustment energy storage of maximum active power output, and the scope for the generated energy for needing to cut off is calculated according to the forward direction of the power surplus permission calculated, Reversal value, according to supplemental capacity surplus after watt level excision power supply, calculating process and software and hardware are realized relatively simple, as a result feedback is very fast, and is calculated according to current active power output, and excision effect is preferable.
Description
Technical field
The present invention relates to micro-capacitance sensor field, and in particular to a kind of microgrid power surplus excision control method and system.
Background technology
Micro-capacitance sensor, it is that one be made up of distributed power generation DG, load, energy storage device and control device is single controllable only
Vertical electricity generation system, micro-capacitance sensor, which is one, can realize self-contr ol, protection and the autonomous system of management, both can be with external electrical network
It is incorporated into the power networks, can also isolated operation.
After micro-capacitance sensor off-network, the control of off-network energy balance is by adjusting distributed power generation output, energy storage output, load are used
Electricity, the stable operation of whole micro-capacitance sensor after off-network is realized, ensures holding for important load while distributed power generation is made full use of
Continuous power supply, while improve distributed power generation utilization rate and load power supply reliability.
Micro-capacitance sensor easy emergent power surplus during islet operation, causes micro-capacitance sensor fluctuation of service, existing power
Cutting method software and hardware is realized complex, and feedback time is longer, and cut off process it is non real-time cause to cut off it is ineffective.
The content of the invention
In view of the above-mentioned drawbacks of the prior art, the invention provides a kind of microgrid power surplus to cut off controlling party
Method, including：
S1：Judge whether power surplus,
S2：It is then to calculate the current active power output of energy storage device and maximum active power output that judged result, which is, otherwise returns to step S1,
S3：Forward direction, the Reversal value that power surplus allows are calculated according to the upper frequency limit of permission and lower limit,
S4：The scope for the generated energy for needing to cut off is calculated according to the forward direction of the power surplus permission calculated, Reversal value,
S5：Power supply is cut off according to watt level,
S6：The power surplus supplemented by adjusting energy storage to contribute after cutting off all power supplys.
Further, present invention also offers a kind of microgrid power surplus to cut off control system, including memory and work(
Rate removal procedure device, the power removal procedure device perform above-mentioned microgrid power surplus excision control method.
Preferably, the microgrid power surplus cuts off control system integration in micro-capacitance sensor monitoring management system, described micro-
Power system monitor management system is from the power distribution network dispatch layer of micro-capacitance sensor, central control level, three aspects of key-course are integrated on the spot
Management and control, wherein power distribution network dispatch layer coordinate multiple micro-capacitance sensors from power distribution network safety, the angle of economical operation, and micro-capacitance sensor connects
By the adjustment control order of higher level's power distribution network, micro-capacitance sensor central control level centralized management distributed power source and each type load, micro-
It is responsible for realizing the maximization of micro-capacitance sensor value when power network is incorporated into the power networks and optimizes micro-capacitance sensor operation, distribution is adjusted in off-grid operation
Power supply is contributed and the electricity consumption situation of each type load, the distributed power controller and load governor of lower floor's key-course on the spot, bears
Blame the transient power balance and UFLS of micro-capacitance sensor.
A kind of microgrid power surplus excision control method and system of the present invention, according to the current active power output calculated
Contributed with the adjustment energy storage of maximum active power output, and needs are calculated according to the forward direction of the power surplus permission calculated, Reversal value
The scope of the generated energy of excision, according to supplemental capacity surplus after watt level excision power supply, calculating process and software and hardware are realized
Relatively simple, as a result feedback is very fast, and is calculated according to current active power output, and excision effect is preferable.
Brief description of the drawings
Fig. 1 is the flow chart of microgrid power surplus excision control method of the present invention.
Embodiment
During islet operation, the output of the distributed power generation inside micro-capacitance sensor becomes such as the change of external environment condition
Change so that the voltage and frequency fluctuation inside micro-capacitance sensor is very big, it is therefore desirable to monitor micro-capacitance sensor builtin voltage and frequency at any time
Situation of change, take measures reply because internal electric source or load power mutation on caused by micro-capacitance sensor safety and stability influence.
As shown in figure 1, which show the flow chart of microgrid power surplus of the present invention excision control method, including：
S1：Judge whether power surplus,
S2：It is then to calculate the current active power output of energy storage device and maximum active power output that judged result, which is, otherwise returns to step S1,
S3：Forward direction, the Reversal value that power surplus allows are calculated according to the upper frequency limit of permission and lower limit,
S4：The scope for the generated energy for needing to cut off is calculated according to the forward direction of the power surplus permission calculated, Reversal value,
S5：Power supply is cut off according to watt level,
S6：The power surplus supplemented by adjusting energy storage to contribute after cutting off all power supplys.
The power surplus at a certain moment during islet operation is,
When power surplus being presentWhen, then power surplus be present needs to cut off, and otherwise continues to judge,
Calculate the current active power output of energy storage deviceWith maximum active power output:
Wherein,It is on the occasion of being negative value under charged state for energy storage device i active power output, under discharge condition.
Forward direction, the deviation of directivity of power surplus permission can be calculated according to the upper frequency limit of permission and lower limit：
Wherein,For micro-grid system current frequency,For target frequency,For the frequency governing response coefficient of load, * is
Perunit value.
Calculate the scope for the generated energy for needing to cut off：
Arranged from big to small according to power, first cut off high-power power supply, then cut off the small power supply of power.When checking a certain electricity
The performance number in sourceWhen, it is not cut off, checks next power supply, when the performance number for checking a certain power supply meetsWhen, it is cut off, then checks next power supply.When the performance number for checking a certain power supply meetsWhen, it is cut off, and do not reexamine power supply below.After power supply i is cut off, first according to
Below equation（7）Power surplus is recalculated, according still further to formula（5）-（6）Recalculate the scope of excision generated energy, Ran Houcai
Carry out the inspection of next power supply：
Wherein,For the generating active power of excision.
Contributed to supplement the power surplus after all suitable power supplys of excision, i.e., by adjusting energy storage。
Further, a kind of microgrid power surplus excision control system, including memory and power removal procedure device, institute
State power removal procedure device and perform above-mentioned microgrid power surplus excision control method.Specifically, execution is stored with memory
Micro-capacitance sensor work(is realized in the instruction of microgrid power surplus excision control, the instruction that the power removal procedure device is performed in memory
Rate surplus excision control.
Preferably, the microgrid power surplus cuts off control system integration in micro-capacitance sensor monitoring management system, described micro-
Power system monitor management system is from the power distribution network dispatch layer of micro-capacitance sensor, central control level, three aspects of key-course are integrated on the spot
Management and control, wherein power distribution network dispatch layer coordinate multiple micro-capacitance sensors from power distribution network safety, the angle of economical operation, and micro-capacitance sensor connects
By the adjustment control order of higher level's power distribution network, micro-capacitance sensor central control level centralized management distributed power source and each type load, micro-
It is responsible for realizing the maximization of micro-capacitance sensor value when power network is incorporated into the power networks and optimizes micro-capacitance sensor operation, distribution is adjusted in off-grid operation
Power supply is contributed and the electricity consumption situation of each type load, the distributed power controller and load governor of lower floor's key-course on the spot, bears
Blame the transient power balance and UFLS of micro-capacitance sensor.
Microgrid power surplus excision control system and micro-capacitance sensor monitoring management system can by software module and/
Or hardware unit integration realization.
A kind of microgrid power surplus excision control method and system of the present invention, according to the current active power output calculated
Contributed with the adjustment energy storage of maximum active power output, and needs are calculated according to the forward direction of the power surplus permission calculated, Reversal value
The scope of the generated energy of excision, according to supplemental capacity surplus after watt level excision power supply, calculating process and software and hardware are realized
Relatively simple, as a result feedback is very fast, and is calculated according to current active power output, and excision effect is preferable.
The explanation of embodiment of above and/or embodiment is only intended to help the method and thought for understanding the present invention, should not
It is interpreted as limitation of the present invention.The simple replacement and deformation done according to technical scheme, still fall within power of the present invention
The protection domain that profit requires and specification is covered.
Claims (3)
1. a kind of microgrid power surplus cuts off control method, it is characterised in that including：
S1：Judge whether power surplus,
S2：It is then to calculate the current active power output of energy storage device and maximum active power output that judged result, which is, otherwise returns to step S1,
S3：Forward direction, the Reversal value that power surplus allows are calculated according to the upper frequency limit of permission and lower limit,
S4：The scope for the generated energy for needing to cut off is calculated according to the forward direction of the power surplus permission calculated, Reversal value,
S5：Power supply is cut off according to watt level,
S6：The power surplus supplemented by adjusting energy storage to contribute after cutting off all power supplys.
2. a kind of microgrid power surplus cuts off control system, it is characterised in that including memory and power removal procedure device, institute
State power removal procedure device and perform the method as described in claim 1.
3. system according to claim 2, it is characterised in that microgrid power surplus excision control system integration in
Micro-capacitance sensor monitoring management system, the micro-capacitance sensor monitoring management system is from the power distribution network dispatch layer of micro-capacitance sensor, central control level, just
Key-course three aspects in ground carry out integrated managements and control, and wherein power distribution network dispatch layer is from power distribution network safety, the angle of economical operation
Degree coordinates multiple micro-capacitance sensors, and micro-capacitance sensor receives the adjustment control order of higher level's power distribution network, the centralized management of micro-capacitance sensor central control level
Distributed power source and each type load, it is responsible for realizing the maximization of micro-capacitance sensor value when micro-grid connection is run and optimizes micro-capacitance sensor
Operation, distribution power is adjusted in off-grid operation and is contributed and the electricity consumption situation of each type load, the distribution of lower floor's key-course on the spot
Power-supply controller of electric and load governor, it is responsible for the transient power balance and UFLS of micro-capacitance sensor.
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| CN201711266305.7A CN107834605A (en) | 2017-12-05 | 2017-12-05 | A kind of microgrid power surplus excision control method and system |
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| CN201711266305.7A CN107834605A (en) | 2017-12-05 | 2017-12-05 | A kind of microgrid power surplus excision control method and system |
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| CN107834605A true CN107834605A (en) | 2018-03-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688369A (en) * | 2021-01-11 | 2021-04-20 | 国网上海能源互联网研究院有限公司 | Multi-source coordination control method and system for comprehensive energy system |
| CN113410875A (en) * | 2021-08-19 | 2021-09-17 | 新风光电子科技股份有限公司 | Micro-grid distributed energy management method based on cloud computing and big data |
| CN113612272A (en) * | 2021-07-19 | 2021-11-05 | 科华数据股份有限公司 | Charging control method and device for uninterruptible power supply of new energy power generation system |
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| CN104022528A (en) * | 2014-06-12 | 2014-09-03 | 国家电网公司 | Method for micro-grid system coordinated control based on multi-element composite energy storage |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104022528A (en) * | 2014-06-12 | 2014-09-03 | 国家电网公司 | Method for micro-grid system coordinated control based on multi-element composite energy storage |
Non-Patent Citations (1)
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| 张洋等: "基于有功缺额的微电网集中控制策略研究", 《电力***保护与控制》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688369A (en) * | 2021-01-11 | 2021-04-20 | 国网上海能源互联网研究院有限公司 | Multi-source coordination control method and system for comprehensive energy system |
| CN113612272A (en) * | 2021-07-19 | 2021-11-05 | 科华数据股份有限公司 | Charging control method and device for uninterruptible power supply of new energy power generation system |
| CN113612272B (en) * | 2021-07-19 | 2024-01-02 | 科华数据股份有限公司 | Charging control method and device for uninterruptible power supply of new energy power generation system |
| CN113410875A (en) * | 2021-08-19 | 2021-09-17 | 新风光电子科技股份有限公司 | Micro-grid distributed energy management method based on cloud computing and big data |
| CN113410875B (en) * | 2021-08-19 | 2021-11-02 | 新风光电子科技股份有限公司 | Micro-grid distributed energy management method based on cloud computing and big data |
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Application publication date: 20180323 |