CN104753087A - Black-starting method for multi-energy storage wind and solar energy storage micro-power grid - Google Patents
Black-starting method for multi-energy storage wind and solar energy storage micro-power grid Download PDFInfo
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- CN104753087A CN104753087A CN201510095679.1A CN201510095679A CN104753087A CN 104753087 A CN104753087 A CN 104753087A CN 201510095679 A CN201510095679 A CN 201510095679A CN 104753087 A CN104753087 A CN 104753087A
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Abstract
The invention discloses a black-starting method for a multi-energy storage wind and solar energy storage micro-power grid. The black-starting method for the multi-energy storage wind and solar energy storage micro-power grid includes steps that detecting the black-starting conditions of the micro-power grid, and enabling the micro-power grid to start black-starting; starting a lithium battery energy storage system, and adding a sensitive load; starting a flow battery energy storage system, and adding surplus load in sequence; adding a photovoltaic power generation system according to judgment conditions; adding a wind driven generator according to the judgment conditions. The black-starting method for the multi-energy storage wind and solar energy storage micro-power grid comprehensively uses the wind energy, solar energy and the like renewable energy and enables the environment pollution to be reduced, the black-starting process is fast and effective, and the system stability is greatly improved.
Description
Technical field
The present invention relates to micro-capacitance sensor applied technical field, particularly relate to a kind of black-start method of the wind-light storage micro-capacitance sensor containing multiple energy storage.
Background technology
In recent years, the renewable power supply such as wind power generation, photovoltaic generation, tidal power generation obtains extensive concern and application, and micro-capacitance sensor is the important Land use systems of these regenerative resources.Microgrid is being coordinated the contradiction between bulk power grid and distributed power source, is fully being excavated in value that distributed energy brings for electrical network and user and benefit etc. and have advantage, can play very important effect in the development of the Chinese and even following electrical network in the world.Micro-capacitance sensor both can networking operation, again can islet operation, this characteristic ensure that electrical network containing microgrid in inclement weather or particular time (as military war, serious natural calamity etc.) to important customer power supply.Due to bulk power grid fault or micro-capacitance sensor internal fault, micro-capacitance sensor enters shut down condition, in order to give full play to the ability of micro-capacitance sensor oneself perception, autodiagnosis, self-decision-making, self-recovery, micro-capacitance sensor has needed black starting-up task, embodies the economy of micro-capacitance sensor, reliable, safe advantage.
Existing document has done comparatively detailed research with regard to the specificity analysis of distributed power source in microgrid with emulation at present, but it is also fewer to the black starting-up research of single micro-capacitance sensor, such as paper [the black starting-up strategy of isolated micro-capacitance sensor] uses many agency's (Agent) systems, propose a kind of black starting-up strategy for entirely black isolated micro-capacitance sensor, and simulating, verifying has been carried out on light storage bavin micro-capacitance sensor model, main reference power source using diesel engine generator as black starting-up in paper, simulation analysis result shows, this control strategy can realize the black starting-up of micro-capacitance sensor fast and stable, switched and the optimization of presynchronization by pattern, in black starting-up process, the stability of system is greatly improved.
But major part research is at present all based on the main reference power source of diesel engine generator as micro-capacitance sensor black starting-up, need consumption of fossil fuels, and the distributed energy kind related in micro-capacitance sensor is comparatively single.In order to embody the green of micro-capacitance sensor, microgrid should more use the regenerative resource such as wind energy, solar energy, reduce the diesel engine generator using and consume diesel oil, and for this wind-light storage micro-capacitance sensor without diesel engine generator, the scheme of existing research and even complete mature is all gone back seldom.
Summary of the invention
For current micro-capacitance sensor black starting-up major part be based on diesel engine generator as main reference power source, and the present situation that the distributed energy kind related in micro-capacitance sensor is comparatively single, the present invention proposes a kind of based on the wind-light storage micro-capacitance sensor black-start method containing multiclass energy storage.
To achieve these goals, technical scheme provided by the invention is:
Containing a black-start method for the wind-light storage micro-capacitance sensor of multiple energy storage, comprise the steps:
(1) receive black starting-up instruction, check micro-capacitance sensor black starting-up condition, satisfy condition and then disconnect on-load switch in microgrid, micro-capacitance sensor starts black starting-up;
(2) start lithium battery energy storage battery system, drop into sensitive load;
(3) start redox flow battery energy storage system, drop into residue load successively;
(4) photovoltaic generating system is dropped into according to decision condition;
(5) wind-driven generator is dropped into according to decision condition.
In step (2), when the frequency f of micro-grid system and voltage U tend towards stability, meet f
min1<f<f
max1, U
min1<U<U
max1time, start lithium battery energy storage battery system, wherein f
min1, f
max1for frequency limits when micro-capacitance sensor normally runs, U
min1, U
max1for voltage bound when micro-capacitance sensor normally runs.
In step (2), the formal decision condition dropping into sensitive load is: K
l, cj× P
l, max≤ P
li, max, wherein K
l, cjimpact coefficient during load input, P
l, maxmaximum rated power, P
li, maxit is lithium battery peak power output.
In step (3), start redox flow battery energy storage system, when meeting K
l, cj× P
l, new+ P
net≤ P
li, max+ P
vR, maxtime, drop into residue load successively, and according to min (K
l, cj× P
l, new+ P
net-P
li, max, 0) and select the power output of flow battery, wherein K
l, cjimpact coefficient during load input, P
l, newrated power, P
netthat micro-capacitance sensor circuit damages power, P
li, maxlithium battery peak power output, P
vR, maxfor the peak power output of flow battery, when load drops into complete or K
l, cj× P
l, new+ P
net≤ P
li, max+ P
vR, maxwhen condition does not meet, stop dropping into load.
In step (4), drop into solar photovoltaic generation system demand fulfillment condition:
P
pv, mppt+ P
li, min+ P
vR, min≤ P
l, otherwise do not drop into solar photovoltaic generation system; Wherein, P
pv, mpptphotovoltaic generating system Maximum Power Output, P
li, minthe minimum power that lithium battery exports, P
vR, minthe minimum power that flow battery exports, P
lthe rated power dropping into load.
In step (5), drop into wind-driven generator demand fulfillment condition: P
w+ P
pv+ P
li, min+ P
vR, min≤ P
l, otherwise do not drop into wind-driven generator; Wherein, P
wwind driven generator output power, P
pvphotovoltaic power generation system output power, P
li, minthe minimum power that lithium battery exports, P
vR, minthe minimum power that flow battery exports, P
lthe rated power dropping into load.
Compared with prior art, the present invention uses energy-storage system as the main reference power source of micro-capacitance sensor black starting-up, and avoid using diesel engine generator, regenerative resource such as comprehensive utilization wind energy, solar energy etc., reduce environmental pollution, realize green energy resource, for dissimilar energy-storage system, this patent uses different Utilization strategies respectively, and the quick stability that is effective, system of black starting-up process is greatly improved.
Accompanying drawing explanation
Fig. 1 is the FB(flow block) of the black-start method of embodiment of the present invention wind-light storage micro-capacitance sensor.
Embodiment
Composition graphs 1 is the FB(flow block) of the black-start method of embodiment of the present invention wind-light storage micro-capacitance sensor, comprises following several large step on the whole:
(1) receive black starting-up instruction, check micro-capacitance sensor black starting-up condition, satisfy condition and then separate on-load switch in microgrid, micro-capacitance sensor starts black starting-up;
(2) start lithium battery energy storage battery system, drop into sensitive load;
(3) start redox flow battery energy storage system, drop into residue load successively;
(4) photovoltaic generating system is dropped into according to decision condition;
(5) wind-driven generator is dropped into according to decision condition.
In step (2), lithium battery energy storage battery system uses VF to control, and when the frequency f of micro-grid system and voltage U tend towards stability, meets f
min1<f<f
max1, U
min1<U<U
max1time, start lithium battery energy storage battery system, wherein f
min1, f
max1for frequency limits when micro-capacitance sensor normally runs, U
min1, U
max1for voltage bound when micro-capacitance sensor normally runs.The decision condition of formal input sensitive load is: K
l, cj× P
l, max≤ P
li, max, wherein K
l, cjimpact coefficient during load input, P
l, maxmaximum rated power, P
li, maxit is lithium battery peak power output.
In step (3), start redox flow battery energy storage system, when meeting K
l, cj× P
l, new+ P
net≤ P
li, max+ P
vR, maxtime, drop into residue load successively, and according to min (K
l, cj× P
l, new+ P
net-P
li, max, 0) and select the power output of flow battery, wherein K
l, cjimpact coefficient during load input, P
l, newrated power, P
netthat micro-capacitance sensor circuit damages power, P
li, maxlithium battery peak power output, P
vR, maxfor the peak power output of flow battery, when load drops into complete or K
l, cj× P
l, new+ P
net≤ P
li, max+ P
vR, maxwhen condition does not meet, stop dropping into load.
In step (4), drop into solar photovoltaic generation system demand fulfillment condition:
P
pv, mppt+ P
li, min+ P
vR, min≤ P
l, otherwise do not drop into solar photovoltaic generation system; Wherein, P
pv, mpptphotovoltaic generating system Maximum Power Output, P
li, minthe minimum power that lithium battery exports, P
vR, minthe minimum power that flow battery exports, P
lthe rated power dropping into load.
In step (5), drop into wind-driven generator demand fulfillment condition: P
w+ P
pv+ P
li, min+ P
vR, min≤ P
l, otherwise do not drop into wind-driven generator; Wherein, P
wwind driven generator output power, P
pvphotovoltaic power generation system output power, P
li, minthe minimum power that lithium battery exports, P
vR, minthe minimum power that flow battery exports, P
lthe rated power dropping into load.
Compared with prior art, the present invention uses energy-storage system as the main reference power source of micro-capacitance sensor black starting-up, and avoid using diesel engine generator, regenerative resource such as comprehensive utilization wind energy, solar energy etc., reduce environmental pollution, realize green energy resource, for dissimilar energy-storage system, this patent uses different Utilization strategies respectively, and the quick stability that is effective, system of black starting-up process is greatly improved.
Above disclosedly be only the preferred embodiments of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the present patent application the scope of the claims is done, still belong to the scope that the present invention is contained.
Claims (6)
1., containing a black-start method for the wind-light storage micro-capacitance sensor of multiple energy storage, it is characterized in that, comprise the steps:
(1) receive black starting-up instruction, check micro-capacitance sensor black starting-up condition, satisfy condition and then disconnect on-load switch in microgrid, micro-capacitance sensor starts black starting-up;
(2) start lithium battery energy storage battery system, drop into sensitive load;
(3) start redox flow battery energy storage system, drop into residue load successively;
(4) photovoltaic generating system is dropped into according to decision condition;
(5) wind-driven generator is dropped into according to decision condition.
2. the black-start method of a kind of wind-light storage micro-capacitance sensor containing multiple energy storage as claimed in claim 1, is characterized in that, in step (2), when the frequency f of micro-grid system and voltage U tend towards stability, meets f
min1<f<f
max1, U
min1<U<U
max1time, start lithium battery energy storage battery system, wherein f
min1, f
max1for frequency limits when micro-capacitance sensor normally runs, U
min1, U
max1for voltage bound when micro-capacitance sensor normally runs.
3. the black-start method of a kind of wind-light storage micro-capacitance sensor containing multiple energy storage as claimed in claim 1, it is characterized in that, in step (2), the formal decision condition dropping into sensitive load is: K
l, cj× P
l, max≤ P
li, max, wherein K
l, cjimpact coefficient during load input, P
l, maxmaximum rated power, P
li, maxit is lithium battery peak power output.
4. the black-start method of a kind of wind-light storage micro-capacitance sensor containing multiple energy storage as claimed in claim 1, is characterized in that, in step (3), starting redox flow battery energy storage system, when meeting K
l, cj× P
l, new+ P
net≤ P
li, max+ P
vR, maxtime, drop into residue load successively, and according to min (K
l, cj× P
l, new+ P
net-P
li, max, 0) and select the power output of flow battery, wherein K
l, cjimpact coefficient during load input, P
l, newrated power, P
netthat micro-capacitance sensor circuit damages power, P
li, maxlithium battery peak power output, P
vR, maxfor the peak power output of flow battery, when load drops into complete or K
l, cj× P
l, new+ P
net≤ P
li, max+ P
vR, maxwhen condition does not meet, stop dropping into load.
5. the black-start method of a kind of wind-light storage micro-capacitance sensor containing multiple energy storage as claimed in claim 1, is characterized in that, in step (4), drop into solar photovoltaic generation system demand fulfillment condition: P
pv, mppt+ P
li, min+ P
vR, min≤ P
l, otherwise do not drop into solar photovoltaic generation system, and wherein, P
pv, mpptphotovoltaic generating system Maximum Power Output, P
li, minthe minimum power that lithium battery exports, P
vR, minthe minimum power that flow battery exports, P
lthe rated power dropping into load.
6. the black-start method of a kind of wind-light storage micro-capacitance sensor containing multiple energy storage as claimed in claim 1, is characterized in that, in step (5), drop into wind-driven generator demand fulfillment condition: P
w+ P
pv+ P
li, min+ P
vR, min≤ P
l, otherwise do not drop into wind-driven generator, and wherein, P
wwind driven generator output power, P
pvphotovoltaic power generation system output power, P
li, minthe minimum power that lithium battery exports, P
vR, minthe minimum power that flow battery exports, P
lthe rated power dropping into load.
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| CN201510095679.1A CN104753087B (en) | 2015-03-04 | 2015-03-04 | A kind of black-start method of the wind-light storage micro-capacitance sensor containing a variety of energy storage |
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| CN105262131A (en) * | 2015-10-22 | 2016-01-20 | 华南理工大学 | Black-start system and black-start method applicable to light storage micro grid |
| CN105846463A (en) * | 2016-05-09 | 2016-08-10 | 东南大学 | Black-start method and system with multi-source coordination |
| CN106451562A (en) * | 2016-12-16 | 2017-02-22 | 北京索英电气技术有限公司 | Black-start system and method for wind and light power storage station |
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| CN113675876A (en) * | 2020-05-14 | 2021-11-19 | 南京南瑞继保电气有限公司 | Automatic black start control method for microgrid |
| CN114825454A (en) * | 2022-06-30 | 2022-07-29 | 西安热工研究院有限公司 | Black start system and method for wind-light-fire-storage combined operation |
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| CN107508320B (en) * | 2017-09-06 | 2020-01-21 | 阳光电源股份有限公司 | Wind power station and black start method thereof |
| CN113675876A (en) * | 2020-05-14 | 2021-11-19 | 南京南瑞继保电气有限公司 | Automatic black start control method for microgrid |
| CN113675876B (en) * | 2020-05-14 | 2023-09-08 | 南京南瑞继保电气有限公司 | Automatic black start control method for micro-grid |
| CN114825454A (en) * | 2022-06-30 | 2022-07-29 | 西安热工研究院有限公司 | Black start system and method for wind-light-fire-storage combined operation |
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