CN112072707A - Coordination control method and device for electric heating hybrid energy storage system - Google Patents
Coordination control method and device for electric heating hybrid energy storage system Download PDFInfo
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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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- 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
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
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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
- H02J3/004—Generation forecast, e.g. methods or systems for forecasting future energy generation
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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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/28—The renewable source being wind energy
Abstract
The invention discloses a coordination control method and a device of an electric heating hybrid energy storage system, which predict the power generation and local load requirements of a fan to obtain the air abandoning amount to be consumed; obtaining battery energy storage and the air abandoning amount which can be absorbed by the electric boiler; based on the distribution mode of the operation cost, respectively obtaining the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air volume; calculating the air abandoning amount which can be respectively absorbed by the battery energy storage and the electric boiler and the total air abandoning amount which can be absorbed by the battery energy storage and the electric boiler according to the distribution coefficient; and determining the consumption air abandoning rate of the electric heating hybrid energy storage system according to the total consumed air abandoning rate and the required consumed air abandoning rate, thereby completing the coordination control of the electric heating hybrid energy storage system, and solving the problems that the battery energy storage and the electric boiler can not run in coordination, and the consumption capacity is weak and unstable due to the unreasonable distribution of the consumed air abandoning rate in the prior art.
Description
Technical Field
The application relates to the field of new energy based on wind power consumption, in particular to a coordination control method of an electric heating hybrid energy storage system, and simultaneously relates to a coordination control device of the electric heating hybrid energy storage system.
Background
In recent years, the wind power installed scale in China is rapidly developed, and the accumulated installed capacity in China currently exceeds 2 hundred million kW. However, when wind power is rapidly developed, the wind power is influenced by multiple factors such as uncoordinated network source planning, limited local absorption space, unstable wind power and the like, and various regions also face the problem of wind abandonment in different degrees. The energy storage technology is widely concerned at home and abroad as an effective measure for improving the peak regulation capability of the system and promoting the wind power consumption. However, the method has specific requirements on the geographic environment and has a limited application range. In the other method, a scientific and reasonable scheduling of the wind-power system containing the thermoelectric power can be formulated by adding the electric boiler, so that the peak regulation capability of the electric power system is improved, and energy conservation, emission reduction and large-scale wind-power consumption are promoted. However, although the electric boiler wind power plant can absorb a certain amount of abandoned wind for heating, the electric boiler wind power plant is limited by the regulation characteristic of the electric boiler and cannot be well matched with the wind power. And the absorption capacity is weak and unstable due to the change of the thermalization work coefficient of the electric boiler and the limitation of the scheduling range of the thermoelectric load.
Disclosure of Invention
The application provides a coordinated control method and a device of an electric-heating hybrid energy storage system, and solves the problems that battery energy storage and an electric boiler cannot run coordinately in the prior art, so that air volume cannot be reasonably distributed and abandoned, and consumption capacity is weak and unstable.
The application provides a coordinated control method of an electric-heating hybrid energy storage system, which comprises the following steps:
predicting the power generation and local load requirements of a fan to obtain the abandoned air volume to be consumed;
obtaining battery energy storage and the air abandoning amount which can be absorbed by the electric boiler;
based on the distribution mode of the operation cost, respectively obtaining the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air volume;
calculating the air abandoning amount which can be respectively absorbed by the battery energy storage and the electric boiler and the total air abandoning amount which can be absorbed by the battery energy storage and the electric boiler according to the distribution coefficient;
and determining the consumption air abandoning rate of the electric heating hybrid energy storage system according to the total consumed air abandoning rate and the required consumed air abandoning rate, thereby finishing the coordination control of the electric heating hybrid energy storage system.
Preferably, the predicting the fan power generation and local load demand to obtain the air abandoning amount to be consumed comprises:
analyzing values of the external air density, the altitude and the wind speed of the position of the fan in different time periods to obtain an environmental coefficient of the fan;
calculating the power generated by the fan according to the density, the altitude, the wind speed and the environmental coefficient of the outside air, so as to predict the power generated by the fan;
carrying out weighted average on the power consumption requirements of the local load at different time periods, and calculating the prediction data of the local load power so as to predict the local load power;
and acquiring the air abandoning amount to be consumed by predicting the difference value between the local load power and the predicted fan generating power.
Preferably, obtaining the battery energy storage and the air abandoning amount that the electric boiler can consume comprises:
the maximum function of battery charging and discharging and the maximum running power of the electric boiler are calculated, so that the energy stored by the battery and the air abandoning amount which can be absorbed by the electric boiler are obtained.
Preferably, the distribution coefficients of the battery energy storage and the electric boiler to the amount of the waste air that can be consumed are obtained respectively based on the distribution mode of the operation cost, and include:
acquiring economic efficiency of energy storage of the electric boiler and the battery based on a distribution mode of the operation cost;
and respectively obtaining the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air quantity according to the economic efficiency.
Preferably, the method further comprises the following steps: the sum of the distribution coefficients of the battery energy storage and the electric boiler to the digestible wind abandoning amount is less than or equal to 1.
Preferably, calculating the air abandoning amount which can be respectively absorbed by the battery energy storage and the electric boiler and the total air abandoning amount which can be absorbed by the battery energy storage and the electric boiler according to the distribution coefficient comprises:
calculating to obtain the air abandoning amount which can be consumed by the battery energy storage according to the distribution coefficient of the air abandoning amount which can be consumed by the battery energy storage and the air abandoning amount which can be consumed by the battery energy storage;
calculating to obtain the waste air volume which can be consumed by the electric boiler according to the distribution coefficient of the waste air volume which can be consumed by the electric boiler and the waste air volume which can be consumed by the electric boiler;
the sum of the air abandoning amount which can be consumed by the battery energy storage and the air abandoning amount which can be consumed by the electric boiler is the total air abandoning amount which can be consumed.
Preferably, the consumption air abandoning rate of the electric heating hybrid energy storage system is determined according to the total air abandoning rate capable of being consumed and the air abandoning rate required to be consumed, and the method comprises the following steps:
the difference value between the air abandon quantity to be absorbed and the total air abandon quantity to be absorbed is taken as the Caryopteris;
and determining the consumption air abandoning rate of the electric heating hybrid energy storage system by calculating the ratio of the difference value to the air abandoning rate to be consumed.
Preferably, the lower the consumption wind abandoning rate of the electric heating hybrid energy storage system is, the stronger the wind power consumption capability of the electric heating hybrid energy storage system is.
This application provides an electric heat hybrid energy storage system's coordinated control device simultaneously, includes:
the wind curtailment quantity acquisition unit is used for predicting the requirements of fan power generation and local load to obtain the wind curtailment quantity to be consumed;
a consumable abandoned air volume obtaining unit for obtaining battery energy storage and the abandoned air volume that can be consumed by the electric boiler;
the distribution coefficient acquisition unit is used for respectively acquiring the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air quantity based on the distribution mode of the operation cost;
the consumed air abandoning amount calculating unit calculates the air abandoning amount which can be respectively consumed by the battery energy storage and the electric boiler and the total air abandoning amount which can be consumed by the battery energy storage and the electric boiler according to the distribution coefficient;
and the consumption abandoned air rate determining unit determines the consumption abandoned air rate of the electric-heating hybrid energy storage system according to the total abandoned air amount capable of being absorbed and the abandoned air amount required to be consumed, so that the coordination control of the electric-heating hybrid energy storage system is completed.
Preferably, the consumption wind curtailment rate determination unit includes:
a difference value obtaining subunit which is used for receiving the difference value between the abandoned air quantity to be absorbed and the total abandoned air quantity to be absorbed;
and the consumption abandoned air rate determining subunit determines the consumption abandoned air rate of the electric heating hybrid energy storage system by calculating the ratio of the difference value to the abandoned air amount to be consumed.
The application provides a coordination control method and a device for an electric-heating hybrid energy storage system, which are used for predicting the requirements of fan power generation and local load and obtaining the air abandoning amount to be consumed; obtaining battery energy storage and the air abandoning amount which can be absorbed by the electric boiler; based on the distribution mode of the operation cost, respectively obtaining the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air volume; calculating the air abandoning amount which can be respectively absorbed by the battery energy storage and the electric boiler and the total air abandoning amount which can be absorbed by the battery energy storage and the electric boiler according to the distribution coefficient; and determining the consumption air abandoning rate of the electric heating hybrid energy storage system according to the total consumed air abandoning rate and the required consumed air abandoning rate, thereby completing the coordination control of the electric heating hybrid energy storage system, and solving the problems that the battery energy storage and the electric boiler can not run in coordination, and the consumption capacity is weak and unstable due to the unreasonable distribution of the consumed air abandoning rate in the prior art.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for coordinating and controlling an electrothermal hybrid energy storage system according to the present application;
FIG. 2 is a schematic diagram of a wind power consumption process of the electric-heat hybrid energy storage system provided by the present application;
FIG. 3 is a schematic flow diagram for obtaining an air curtailment rate of an electrothermal hybrid energy storage system provided by the present application;
FIG. 4 is a graph comparing the air curtailment rates provided by the present application;
FIG. 5 is a schematic diagram of a coordinated control device of an electrothermal hybrid energy storage system provided by the present application.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of implementation in many different ways than those herein set forth and of similar import by those skilled in the art without departing from the spirit of this application and is therefore not limited to the specific implementations disclosed below.
The method provided by the present application is described in detail below with reference to a flow diagram of a coordinated control method of an electrothermal hybrid energy storage system provided by fig. 1.
And S101, predicting the power generation and local load requirements of the fan to obtain the air abandoning amount which needs to be consumed.
The method is used for short-term prediction of the wind power and the load, and the wind power required to be consumed can be calculated through the difference value between the load and the wind power.
Firstly, analyzing values of external air density, altitude and wind speed of a position where a fan is located in different time periods to obtain an environmental coefficient of the fan; on the basis, calculating the power generated by the fan according to the density, the altitude, the wind speed and the environmental coefficient of the outside air, so as to predict the power generated by the fan; and predicting the short-term prediction of the generated power of the fan.
Then, carrying out weighted average on the electricity consumption requirements of the local load at different time periods, and calculating the prediction data of the local load power so as to predict the local load power; and acquiring the air abandoning amount to be consumed by predicting the difference value between the local load power and the predicted fan generating power. The consumed wind curtailment quantity can also be called as the consumed wind power.
The basic prediction calculation formula of the generated power of the fan is as follows:
in the formula: pfeng(t) wind power predicted power at time t, h is the position altitude of a fan, rho is the air density, v is the local wind speed for collection, gamma is the wind energy power generation environment coefficient, and P isfeng.e(t) installed capacity of the fan, sin omega fan angle, AfThe area swept by the impeller.
The above formula performs short-term prediction on the generated power of the fan, and also needs to analyze and predict the load of the local area, so as to calculate the wind power to be consumed.
The load prediction calculation formula is as follows:
in the formula: pfuhe(t)Load power value, α, at time ti、μi、
Respectively, the weight, mean and variance of the i component, wherein
0≤αiLess than or equal to 1; m is the number of extracted data, PiAnd (t) is ith load data, and y is the measured data average value of the load power.
The air abandon amount that needs to be absorbed is:
in the formula:
the maximum air abandoning amount to be consumed in a time period T, T is a time period, 1 hour is taken as a time period, PzjAnd (t) is the sum of the output of other generator sets at the moment t.
And S102, obtaining battery energy storage and the air abandon amount which can be consumed by the electric boiler.
The wind power consumption is mainly carried out through the electric boiler and the battery energy storage, and at the moment, calculation needs to be carried out on the service efficiency of the battery energy storage and the electric boiler.
The maximum function of battery charging and discharging and the maximum running power of the electric boiler are calculated, so that the energy stored by the battery and the air abandoning amount which can be absorbed by the electric boiler are obtained.
The maximum power calculation formula of battery charging and discharging:
in the formula: pdis,max(t) maximum charge and discharge power of the energy storage battery under external environment is considered for time t, Pdian.eFor power rating of energy storage cells, Pdc(t-1) is beforeThe battery capacity at a moment, SOC (t) is the charge state of the energy storage battery at the moment t, eta is the charge and discharge rate of the battery considering environmental factors, IjIn order to charge and discharge the maximum current,
maximum current for desired state, S B0,1, -1 is the battery at rest, charged and discharged state.
The maximum operation power calculation formula of the electric boiler is as follows:
in the formula: pdgl,max(t) maximum consumption of the abandoned wind power of the electric boiler at time t, Pdgl,eThe rated operation power of the electric boiler, beta is the conversion efficiency of the electric boiler, and Q (t) is the heat energy generated by the electric boiler at the moment t.
The sum of the maximum function of battery charging and discharging and the maximum operation power of the electric boiler is used for storing energy for the battery and the air abandoning amount which can be absorbed by the electric boiler.
And step S103, respectively obtaining the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air quantity based on the distribution mode of the operation cost.
Through the steps S101 and S102, the amount of the waste air to be consumed and the power that can be consumed by the electric boiler and the battery energy storage system at the time t are calculated, and a method for distributing the waste air is needed, so that the waste air is maximally consumed while the economic benefit is ensured.
Because the volatility of the wind power and the uncertainty of the load make the wind abandoning amount required to be consumed present the volatility, in order to maximally consume the wind power, the invention designs a distribution mode based on the operation cost, and completes the distribution of the wind power consumption by calculating the economic efficiency of the electric boiler and the battery energy storage so as to improve the maximum consumption rate.
Acquiring economic efficiency of energy storage of the electric boiler and the battery through a distribution mode based on the operation cost; and respectively obtaining the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air quantity according to the economic efficiency.
Calculating the distribution coefficient of the electric boiler:
in the formula:
the heat selling cost is 0.15-0.265/kW.h,
the pasting rate is 3.2-4.85 percent, Pdgc(t) the thermal power output by the electric boiler at the moment t,
the operation cost of the electric boiler is high, phi is the heat efficiency, generally 0.8-0.95,
which is the running cost of the fan.
Calculating the distribution coefficient of the stored energy of the battery:
in the formula:
the electricity selling cost is 0.55-1.15/kW.h, Pmd,max(t) is the battery energy storage discharge power,
and the energy storage operation cost of the battery is saved.
The sum of the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air volume is less than or equal to 1, namely
+≤1 (8)。
And step S104, calculating the air abandoning amount which can be respectively absorbed by the battery energy storage and the electric boiler and the total air abandoning amount which can be absorbed by the battery energy storage and the electric boiler according to the distribution coefficient.
The distribution coefficient of the electric boiler and the battery energy storage is obtained through the step S103, the air curtailment amount which can be consumed by the two devices can be obtained, and the ratio of the total consumed air curtailment amount to the air curtailment amount which needs to be consumed can show that the wind power consumption capacity can be greatly improved.
Firstly, calculating and obtaining the air abandoning amount which can be consumed by the battery energy storage according to the distribution coefficient of the air abandoning amount which can be consumed by the battery energy storage and the air abandoning amount which can be consumed by the battery energy storage; calculating to obtain the waste air volume which can be consumed by the electric boiler according to the distribution coefficient of the waste air volume which can be consumed by the electric boiler and the waste air volume which can be consumed by the electric boiler; and then, the sum of the air abandoning amount which can be consumed by the battery energy storage and the air abandoning amount which can be consumed by the electric boiler is obtained through calculation, and the sum is the total air abandoning amount which can be consumed. The calculation formula is as follows:
in the formula:
the air-abandoning quantity of the air for the battery to absorb,
the air flow is the waste air flow consumed by the electric boiler.
And S105, determining the consumption air abandoning rate of the electric-heating hybrid energy storage system according to the total consumed air abandoning rate and the required consumed air abandoning rate, so as to complete the coordination control of the electric-heating hybrid energy storage system.
The difference value between the air abandon quantity to be absorbed and the total air abandon quantity to be absorbed is taken as the Caryopteris; and determining the consumption air abandoning rate of the electric heating hybrid energy storage system by calculating the ratio of the difference value to the air abandoning rate required to be consumed, thereby finishing the coordination control of the electric heating hybrid energy storage system.
The calculation formula of the wind abandoning rate is as follows:
the lower the consumption wind abandoning rate of the electric heating hybrid energy storage system is, the stronger the wind power consumption capability of the electric heating hybrid energy storage system is.
According to the electric heating hybrid energy storage system wind power consumption method, the optimal distribution coefficient is calculated by calculating the abandoned wind to be consumed and the charging and discharging power of the electric boiler and the battery energy storage system, the maximum abandoned wind consumption rate of the electric heating hybrid energy storage system is obtained, and the practicability of the electric heating hybrid energy storage system is analyzed. The wind power consumption flow chart is shown in fig. 2.
The best embodiments of the invention for providing specific applications are as follows:
the installed capacity of the fan in a certain area is 200MW, and the wind sweeping area of the fan is about 10.36m2The local wind speed is 2 m/s-8 m/s, the altitude of the fan is 3.3m, and the air density is 1.243kg/m3To 1.376kg/m3The fan angle is 00-900. The installed capacity of other units is 900 MW. And meanwhile, the consumption air abandoning rate of the electric heating hybrid energy storage system is obtained by combining the attached figure 3.
And calculating the predicted power of the fan and the load according to the given environmental coefficient.
Randomly extracting 500 historical data for calculation, and obtaining load predicted power at the time t as follows:
in the formula: m is 500 extracted historical data.
And calculating the air abandoning amount to be consumed by using the formula with 1 hour as a time period T, and calculating the maximum charge-discharge power of the battery energy storage system and the maximum operation power of the electric boiler according to the known energy storage capacity of the electric boiler and the battery.In the formula, SOC (t), SOCmax、Ij、
SBIs a factor in randomly chosen 500 historical data.
The power to be dissipated is:
in the formula: pzj(t) 756.63 kW.
A30 kW battery and a 50kW electric boiler are configured in the local area, and the actual maximum operating power of the battery and the electric boiler at the moment t is as follows:
1. the maximum consumption and abandoned air volume is ensured by calculating the operation cost:
calculating the distribution coefficient of the electric boiler:
calculating the distribution coefficient of the stored energy of the battery:
in the formula: t moment output thermal power P of electric boilerdgc(t) is 45kW, and the discharge power P at the moment of battery energy storage tmd,max(t) is 25KW, and the total weight of the steel,
the running cost of the electric boiler is 0.15/kW·h，
For the running cost of the fan of 0.653/kW.h,
the energy storage operation cost of the battery is 0.176/kW.h.
2. Calculating the consumption wind abandon rate obtained by using the method of the invention:
the air volume of abandoning that battery energy storage and electric boiler were respectively absorbed does:
the air consumption and air abandonment rate is as follows:
wind-abandoning contrast meter
The consumption wind curtailment rate is plotted in fig. 4.
Based on the same inventive concept, the present application also provides a coordination control apparatus 500 of an electric-thermal hybrid energy storage system, as shown in fig. 5, including:
the wind curtailment quantity obtaining unit 510 for consumption predicts the fan power generation and local load demand to obtain the wind curtailment quantity for consumption;
a consumable abandoned air volume obtaining unit 520 for obtaining the battery energy storage and the abandoned air volume that can be consumed by the electric boiler;
a distribution coefficient obtaining unit 530, which obtains distribution coefficients of the battery energy storage and the electric boiler to the amount of the waste air that can be consumed, respectively, based on a distribution mode of the operation cost;
the consumed air abandoning amount calculating unit 540 calculates the air abandoning amount which can be respectively consumed by the battery energy storage and the electric boiler and the total air abandoning amount which can be consumed by the battery energy storage and the electric boiler according to the distribution coefficient;
and the consumption abandoned air rate determining unit 550 determines the consumption abandoned air rate of the electric-thermal hybrid energy storage system according to the total abandoned air amount capable of being consumed and the abandoned air amount required to be consumed, so as to complete the coordination control of the electric-thermal hybrid energy storage system.
Preferably, the consumption wind curtailment rate determination unit includes:
a difference value obtaining subunit which is used for receiving the difference value between the abandoned air quantity to be absorbed and the total abandoned air quantity to be absorbed;
and the consumption abandoned air rate determining subunit determines the consumption abandoned air rate of the electric heating hybrid energy storage system by calculating the ratio of the difference value to the abandoned air amount to be consumed.
The method for improving the wind power consumption based on the electric-heat hybrid energy storage system can furthest ensure the maximum charge and discharge power of the battery energy storage system and the electric boiler by analyzing the relationship between the environment and the battery storage and the electric boiler. And the optimal wind power consumption benefit can be realized by calculating the coordination capability between the battery energy storage system and the electric boiler and calculating the distribution coefficient, the conditions of capacity and power shortage and over-distribution are avoided, and the wind power consumption capability is improved. The problem of prior art battery energy storage and electric boiler can not coordinate the operation to the amount of wind is abandoned in can not reasonable distribution, leads to the ability of absorption weak and unstable is solved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention.
Claims (10)
1. A coordination control method of an electric-heating hybrid energy storage system is characterized by comprising the following steps:
predicting the power generation and local load requirements of a fan to obtain the abandoned air volume to be consumed;
obtaining battery energy storage and the air abandoning amount which can be absorbed by the electric boiler;
based on the distribution mode of the operation cost, respectively obtaining the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air volume;
calculating the air abandoning amount which can be respectively absorbed by the battery energy storage and the electric boiler and the total air abandoning amount which can be absorbed by the battery energy storage and the electric boiler according to the distribution coefficient;
and determining the consumption air abandoning rate of the electric heating hybrid energy storage system according to the total consumed air abandoning rate and the required consumed air abandoning rate, thereby finishing the coordination control of the electric heating hybrid energy storage system.
2. The control method of claim 1, wherein predicting the fan power generation and local load demand to obtain the air curtailment amount to be consumed comprises:
analyzing values of the external air density, the altitude and the wind speed of the position of the fan in different time periods to obtain an environmental coefficient of the fan;
calculating the power generated by the fan according to the density, the altitude, the wind speed and the environmental coefficient of the outside air, so as to predict the power generated by the fan;
carrying out weighted average on the power consumption requirements of the local load at different time periods, and calculating the prediction data of the local load power so as to predict the local load power;
and acquiring the air abandoning amount to be consumed by predicting the difference value between the local load power and the predicted fan generating power.
3. The control method of claim 1, wherein obtaining battery energy storage and an amount of wind curtailment that can be taken up by the electric boiler comprises:
the maximum function of battery charging and discharging and the maximum running power of the electric boiler are calculated, so that the energy stored by the battery and the air abandoning amount which can be absorbed by the electric boiler are obtained.
4. The control method according to claim 1, wherein the obtaining of the distribution coefficients of the battery energy storage and the electric boiler to the amount of the wind curtailment that can be consumed based on the distribution mode of the operation cost comprises:
acquiring economic efficiency of energy storage of the electric boiler and the battery based on a distribution mode of the operation cost;
and respectively obtaining the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air quantity according to the economic efficiency.
5. The control method according to claim 1 or 4, characterized by further comprising: the sum of the distribution coefficients of the battery energy storage and the electric boiler to the digestible wind abandoning amount is less than or equal to 1.
6. The control method according to claim 1, wherein calculating the respective air curtailment amounts that can be consumed by the battery energy storage and the electric boiler and the total air curtailment amount that can be consumed by the battery energy storage and the electric boiler according to the distribution coefficient comprises:
calculating to obtain the air abandoning amount which can be consumed by the battery energy storage according to the distribution coefficient of the air abandoning amount which can be consumed by the battery energy storage and the air abandoning amount which can be consumed by the battery energy storage;
calculating to obtain the waste air volume which can be consumed by the electric boiler according to the distribution coefficient of the waste air volume which can be consumed by the electric boiler and the waste air volume which can be consumed by the electric boiler;
the sum of the air abandoning amount which can be consumed by the battery energy storage and the air abandoning amount which can be consumed by the electric boiler is the total air abandoning amount which can be consumed.
7. The control method according to claim 1, wherein determining the consumption air curtailment rate of the electrothermal hybrid energy storage system according to the total air curtailment amount capable of being consumed and the air curtailment amount required to be consumed comprises:
the difference value between the air abandon quantity to be absorbed and the total air abandon quantity to be absorbed is taken as the Caryopteris;
and determining the consumption air abandoning rate of the electric heating hybrid energy storage system by calculating the ratio of the difference value to the air abandoning rate to be consumed.
8. The control method according to claim 1 or 7, wherein the lower the consumption curtailment wind rate of the electric-heating hybrid energy storage system is, the higher the wind power consumption capability of the electric-heating hybrid energy storage system is.
9. A coordinated control device of an electric-heating hybrid energy storage system is characterized by comprising:
the wind curtailment quantity acquisition unit is used for predicting the requirements of fan power generation and local load to obtain the wind curtailment quantity to be consumed;
a consumable abandoned air volume obtaining unit for obtaining battery energy storage and the abandoned air volume that can be consumed by the electric boiler;
the distribution coefficient acquisition unit is used for respectively acquiring the distribution coefficients of the battery energy storage and the electric boiler to the digestible abandoned air quantity based on the distribution mode of the operation cost;
the consumed air abandoning amount calculating unit calculates the air abandoning amount which can be respectively consumed by the battery energy storage and the electric boiler and the total air abandoning amount which can be consumed by the battery energy storage and the electric boiler according to the distribution coefficient;
and the consumption abandoned air rate determining unit determines the consumption abandoned air rate of the electric-heating hybrid energy storage system according to the total abandoned air amount capable of being absorbed and the abandoned air amount required to be consumed, so that the coordination control of the electric-heating hybrid energy storage system is completed.
10. The apparatus of claim 9, wherein the curtailment wind rate determination unit comprises:
a difference value obtaining subunit which is used for receiving the difference value between the abandoned air quantity to be absorbed and the total abandoned air quantity to be absorbed;
and the consumption abandoned air rate determining subunit determines the consumption abandoned air rate of the electric heating hybrid energy storage system by calculating the ratio of the difference value to the abandoned air amount to be consumed.
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| CN106372742A (en) * | 2016-08-19 | 2017-02-01 | 天津大学 | Power-to-gas multi-source energy storage type microgrid day-ahead optimal economic dispatching method |
| CN106992541A (en) * | 2017-04-24 | 2017-07-28 | 中国电力科学研究院 | It is a kind of to reduce the method and apparatus that wind-powered electricity generation abandons wind |
| CN108808659A (en) * | 2018-06-05 | 2018-11-13 | 国网吉林省电力有限公司 | The coordination optimization of wind electricity digestion integrated energy system controls and economic evaluation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106372742A (en) * | 2016-08-19 | 2017-02-01 | 天津大学 | Power-to-gas multi-source energy storage type microgrid day-ahead optimal economic dispatching method |
| CN106992541A (en) * | 2017-04-24 | 2017-07-28 | 中国电力科学研究院 | It is a kind of to reduce the method and apparatus that wind-powered electricity generation abandons wind |
| CN108808659A (en) * | 2018-06-05 | 2018-11-13 | 国网吉林省电力有限公司 | The coordination optimization of wind electricity digestion integrated energy system controls and economic evaluation method |
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