WO2022183580A1 - 微电网优化配置方法、装置、设备和存储介质 - Google Patents
微电网优化配置方法、装置、设备和存储介质 Download PDFInfo
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- 238000004590 computer program Methods 0.000 claims description 12
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- 230000005611 electricity Effects 0.000 abstract description 19
- 238000010248 power generation Methods 0.000 description 7
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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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- the present invention relates to the field of microgrid, and more particularly, to a method, apparatus, device and storage medium for optimizing configuration of microgrid.
- Microgrid is a single controllable independent power generation system composed of distributed generation, load, energy storage device and control device.
- the microgrid can be regarded as a controllable unit in the large power grid.
- Microgrid can be regarded as the small power system, it has complete functions of generation, transmission and distribution, can realize local power balance and energy optimization, and can be regarded as a "virtual" power supply or load.
- microgrid By combining energy storage technology with distributed power generation, microgrid solves the problem of unstable and fluctuating distributed power generation. For example, wind power, photovoltaics and other renewable energy power generation have the characteristics of uncertainty. For microgrids to make full use of energy storage and renewable energy and improve energy efficiency, it is necessary to balance the two and optimize their capacity allocation.
- the present invention aims to overcome at least one of the above-mentioned defects of the prior art, and provides a solution for optimizing the configuration of energy storage energy and renewable energy in the microgrid, thereby improving the energy utilization rate of the microgrid.
- a method for optimizing configuration of a microgrid comprising: determining the net output power of renewable energy, and determining a power supply mode of the microgrid according to the net output power of the renewable energy; the power supply mode of the microgrid at least includes: only renewable energy supply power mode, renewable energy and large grid or energy storage device co-supply mode and large grid power supply mode only.
- the main power source of the microgrid is renewable energy
- the power supply mode of the microgrid is determined by determining the net output power of the renewable energy.
- the microgrid can be connected to the large grid, so the power supply mode will include only renewable energy power supply mode, renewable energy and large grid or energy storage device. mode, and the mains-only mode.
- the power supply mode of the microgrid After the power supply mode of the microgrid is determined, it is necessary to continue to determine the net output power of the renewable energy at the next moment, so as to update or maintain the power supply mode of the microgrid. Due to the intermittent and random characteristics of distributed renewable energy sources such as wind or photovoltaic power generation in the microgrid, there will be unstable situations in the power supply process. Switching the power supply mode in time can ensure the stable power supply of the microgrid, and at the same time, the timely use of other energy sources in the case of insufficient renewable energy power supply also ensures that the energy in the microgrid is fully utilized.
- determining the power supply mode of the microgrid according to the net output power of the renewable energy specifically: judging whether the net output power of the renewable energy is greater than 0; If not, it is determined that the power supply mode of the microgrid is a combined power supply mode of renewable energy and a large power grid or an energy storage device, or a power supply mode of only the large power grid.
- the power supply mode of the microgrid is the common power supply mode of renewable energy and the large power grid or the energy storage device, or only the power supply mode of the large power grid, specifically: judging whether the remaining capacity of the energy storage device is less than or equal to the minimum remaining capacity, and if so, Then, it is determined that the power supply mode of the microgrid is only the power supply mode of the large power grid. If not, it is determined that the power supply mode of the microgrid is the power supply mode of the renewable energy and the large power grid or the energy storage device.
- the power supply mode of the microgrid is the common power supply mode of renewable energy and large power grid or energy storage device or only the power supply mode of large power grid. If the power supply of the energy device is insufficient, and it is known that the net output of renewable energy is less than 0, it can be concluded that the power supply of the microgrid itself is insufficient.
- the power supply of the power grid is stable; if not, it means that the energy storage device still stores electricity, but whether its electricity can meet the net output of renewable energy. When the net output of renewable energy is less than 0, it can supply power with renewable energy to meet the needs of the microgrid.
- the electricity and power of the renewable energy and the energy storage device can only be determined after calculation. Therefore, when the remaining capacity of the energy storage device is greater than the minimum remaining capacity, it is determined that the power supply mode of the microgrid is the combined power supply mode of the renewable energy and the large grid or the energy storage device. . Since the entire optimal configuration method will continue to determine the net output power of the subsequent renewable energy, if the net output power of the subsequent renewable energy is still less than 0, continue to determine whether the remaining capacity of the subsequent energy storage device is less than or equal to the minimum The remaining capacity and the operations performed so that the subsequent microgrid power supply mode is maintained or updated.
- the co-power supply mode of renewable energy and large power grid or energy storage device includes the co-power supply mode of renewable energy and large power grid, and the co-power supply mode of renewable energy and energy storage device; the power supply mode of micro grid is determined as renewable energy and large power grid.
- the power supply mode of the grid or the energy storage device specifically: judging whether the sum of the net output power of the renewable energy and the energy storage device is greater than 0; , if not, then determine that the power supply mode of the microgrid is the combined power supply mode of the renewable energy and the large power grid.
- the power supply mode of the microgrid is the common power supply mode of renewable energy and large power grid, or the common power supply mode of renewable energy and energy storage device.
- the sum of the net output power of renewable energy and energy storage device is greater than 0 , if yes, it means that the total power of renewable energy and energy storage devices is enough to supply power to the entire microgrid, then combine the two to supply power to maintain the stability of the microgrid; if not, it means that the combined output of the two cannot meet the needs of In order to ensure the stable power supply of the power grid, it is necessary to connect renewable energy to the large power grid for power supply, adopt the power supply mode of renewable energy and large power grid, and charge the energy storage device.
- the power supply mode of the renewable energy and the energy storage device is adopted. Since the large power grid supplies power to the micro grid, there will be restrictions on the exchange of power and exchange of electricity. Therefore, when the power of the energy storage device and the renewable energy can be stable for the microgrid, this mode is preferentially selected for power supply.
- the power supply mode of the microgrid is only the renewable energy power supply mode
- the power supply mode of the microgrid is only the power supply mode of renewable energy, and at the same time, it is also judged whether the remaining capacity of the energy storage device is greater than or equal to the maximum remaining capacity, if not.
- the energy storage device is charged, so that when the subsequent microgrid power supply mode is maintained or updated, the renewable energy cannot be used for power supply, and the energy storage device can be given priority. A mode in which renewable energy and energy storage devices are used for power supply.
- a device for optimizing configuration of a microgrid comprising: a data processing module for determining the net output power of renewable energy, and determining a power supply mode of the microgrid according to the net output power of the renewable energy; the power supply mode of the microgrid at least includes: only Renewable energy power supply mode, renewable energy and large grid or energy storage device co-power supply mode and large grid power supply mode only.
- the data processing module is used to determine the power supply mode of the microgrid according to the net output power of the renewable energy, specifically: the data processing module is used to determine whether the net output power of the renewable energy is greater than 0, and if so, determine the power supply of the microgrid The mode is only the power supply mode of renewable energy, if not, the power supply mode of the microgrid is determined to be the power supply mode of the renewable energy and the large power grid or the energy storage device, or the power supply mode of the large power grid only.
- the data processing module is used to determine that the power supply mode of the microgrid is a combined power supply mode of the renewable energy and the large power grid or the energy storage device, or only the power supply mode of the large power grid, specifically: the data processing module is used to determine the remaining capacity of the energy storage device. Whether it is less than or equal to the minimum remaining capacity, if so, determine that the power supply mode of the microgrid is only the large grid power supply mode, if not, determine that the power supply mode of the microgrid is the combined power supply mode of renewable energy and large grid or energy storage device.
- a computer device includes a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the above-mentioned method for optimizing the configuration of a microgrid is implemented.
- the energy storage device In the power supply mode of only renewable energy and the power supply mode of renewable energy and the large power grid, the energy storage device is charged at the same time, so that when the power of the energy storage device is sufficient, the renewable energy can be combined with the large power grid as soon as possible.
- the power supply mode is switched to the joint power supply mode of renewable energy and energy storage devices to avoid the problem of exchanging electricity or exceeding the limit when it is connected to the grid.
- FIG. 1 is a schematic flowchart of steps S1 to S233 of the present invention.
- this embodiment provides a method for optimizing configuration of a microgrid, and the method includes:
- S2 Determine the power supply mode of the microgrid according to the net output power of renewable energy
- the power supply modes of the microgrid include at least: only renewable energy power supply mode, renewable energy and large grid or energy storage device co-power supply mode, and only large grid power supply mode.
- the main power source of the microgrid is renewable energy, such as wind power, photovoltaic power, etc.
- the power supply mode of the microgrid is determined by determining the net output power of the renewable energy, because the microgrid is composed of distributed renewable energy and energy storage devices. , and when the power supply of the microgrid is insufficient, that is, when the power supply of the renewable energy or the energy storage device is insufficient, the microgrid can be connected to the large grid, so the power supply mode will include only the renewable energy power supply mode, the renewable energy and the power supply mode. Common power supply mode of large power grid or energy storage device, and power supply mode of large power grid only.
- the net output power of the renewable energy is generally determined by the difference between the output power of the renewable energy and the power of the load.
- P ren is the output power of renewable energy
- P load is the load power.
- step S1 After the power supply mode of the microgrid is determined, it is necessary to continue to determine the net output power of the renewable energy at the next moment, that is, step S1 is re-executed at a fixed time interval, so as to update the power supply mode of the microgrid or maintain the current model. Due to the intermittent and random characteristics of distributed renewable energy sources such as wind or photovoltaic power generation in the microgrid, there will be unstable situations in the power supply process. Switching the power supply mode in time can ensure the stable power supply of the microgrid, and at the same time, the timely use of other energy sources in the case of insufficient renewable energy power supply also ensures that the energy in the microgrid is fully utilized.
- step S2 is:
- step S21 Determine whether the net output power of the renewable energy is greater than 0, if so, go to step S22; if not, go to step S23;
- the power supply mode of the microgrid is a combined power supply mode of renewable energy and a large power grid or an energy storage device, or a power supply mode of only the large power grid.
- the initial power of the microgrid system will also depend on the predicted load power, renewable energy Energy output power and exchange power limit
- the output power of the energy is the predicted power, which is confirmed according to the predicted load power and the output power of the renewable energy in the reference period, and P exchange is the upper limit of the exchange power.
- the initial value of the capacity of the microgrid system can be calculated according to the initial power of the microgrid system.
- step S22 is:
- S22 Determine whether the power supply mode of the microgrid is the renewable energy only power supply mode, and judge whether the remaining capacity of the energy storage device is greater than or equal to the maximum remaining capacity, if so, do nothing; to charge the energy storage device.
- step S22 while determining that the power supply mode of the microgrid is the renewable energy power supply mode only, it is also determined whether the remaining capacity of the energy storage device is greater than or equal to the maximum remaining capacity, and the maximum remaining capacity is a preset value.
- the energy storage device is charged, so that the renewable energy can be used preferentially when the subsequent microgrid power supply mode maintenance or update cannot rely on renewable energy for power supply. A mode in which renewable energy and energy storage devices are co-supplied.
- step S23 is:
- step S231 Determine whether the remaining capacity of the energy storage device is less than or equal to the minimum remaining capacity, if yes, go to step S232; if not, go to step S233;
- S232 determine that the power supply mode of the microgrid is only the large grid power supply mode
- S233 Determine that the power supply mode of the microgrid is a combined power supply mode of the renewable energy and the large power grid or the energy storage device.
- the co-power supply mode of renewable energy and large power grid or energy storage device includes the co-power supply mode of renewable energy and large power grid, and the co-power supply mode of renewable energy and energy storage device;
- step S233 is:
- S2331 Determine whether the sum of the net output power of the renewable energy and the energy storage device is greater than 0, if so, go to step S2332; if not, go to step S2333;
- S2332 Determine that the power supply mode of the microgrid is a joint power supply mode of renewable energy and energy storage devices;
- S2333 Determine that the power supply mode of the microgrid is the combined power supply mode of renewable energy and the large power grid;
- step S23 it is determined that the power supply mode of the selected microgrid is the common power supply mode of the renewable energy and the large power grid or the energy storage device or only the power supply mode of the large power grid. Specifically, it is determined in step S231 whether the remaining capacity of the energy storage device is less than or equal to the minimum value. Remaining capacity, the minimum remaining capacity is the preset value, if so, step S232 is executed, indicating that the power of the energy storage device is insufficient, and in the case that the net output of the renewable energy is known to be less than 0 in step S21, the power supply of the microgrid itself can be obtained.
- the power supply mode of the microgrid is determined to be the joint power supply mode of renewable energy and large power grids or energy storage devices.
- the entire optimal configuration method will continue to determine the net output power of the subsequent renewable energy, if the net output power of the subsequent renewable energy is still less than 0, continue to determine whether the remaining capacity of the subsequent energy storage device is less than or equal to the minimum The remaining capacity and the operations performed so that the subsequent microgrid power supply mode is maintained or updated.
- step S233 it is determined that the power supply mode of the microgrid is the common power supply mode of the renewable energy and the large power grid, or the common power supply mode of the renewable energy and the energy storage device, and the net output power of the renewable energy and the energy storage device is determined by step S2331.
- step S2332 Whether the sum is greater than 0, if so, go to step S2332, indicating that the total power of the renewable energy and the energy storage device is sufficient to supply power to the entire microgrid, then combine the two to supply power to maintain the stability of the microgrid; if not, go to step S2332 S2333, indicating that the combined output of the two cannot meet the stable power supply of the microgrid, so it is necessary to connect the renewable energy to the large power grid for power supply, and adopt the common power supply mode of the renewable energy and the large power grid.
- step S2333 that is, the power supply mode of renewable energy and the large power grid is adopted, the exchanged power between the microgrid and the large power grid needs to be counted in real time, and the comparison is made according to the preset exchanged power constraints. If the exchanged power constraints are not satisfied, the Adjust the power of the micro-grid system to meet the constraints.
- step S232 when only the large grid power supply mode is adopted, the monitoring and adjustment of the exchanged power also need to be performed.
- step S1 is first performed to determine the net output power of the renewable energy, and step S21 is performed to determine whether the net output power of the renewable energy determined in step S1 is greater than 0. If so, step S22 is performed to determine the microgrid output power.
- the power supply mode of the power grid is only renewable energy power supply mode. In this mode, the microgrid is powered by renewable energy only.
- step S231 is performed to determine whether the remaining capacity of the energy storage device is less than or equal to the minimum remaining capacity, and if so, step S232 is performed to determine that the power supply mode of the microgrid is only Large grid power supply mode, if otherwise, step S2331 is performed to determine whether the sum of the net output power of the renewable energy and the energy storage device is greater than 0, if so, step S2332 is performed to determine that the power supply mode of the microgrid is the renewable energy and the energy storage device.
- step S2333 is performed to determine that the power supply mode of the microgrid is a common power supply mode between renewable energy and the large power grid. In this mode and the large power grid only power supply mode determined in step S232, it is necessary to count the exchanged power between the microgrid and the large power grid in real time, The comparison is made according to the preset exchange power constraints. If the exchange power constraints are not met, the power of the microgrid system is adjusted to meet the constraints. After the power supply mode of the microgrid is determined, it is necessary to continue to determine the net output power of the renewable energy at the next moment, that is, step S1 is re-executed at a fixed time interval and corresponding subsequent steps are executed accordingly, so as to reduce the power consumption of the microgrid. The power supply mode is updated or the current mode is maintained, so as to realize the optimal configuration of the power resources of the microgrid and improve the utilization rate of energy.
- this embodiment also provides a microgrid optimal configuration device, including: a data processing module for determining the net output power of the renewable energy, and determining the microgrid according to the net output power of the renewable energy.
- the power supply mode of the power grid; the power supply mode of the microgrid includes at least: the renewable energy power supply mode only, the renewable energy power supply mode with the large grid or the energy storage device, and the large grid power supply mode only.
- the data processing module is used to determine the power supply mode of the microgrid according to the net output power of the renewable energy, specifically: the data processing module is used to determine whether the net output power of the renewable energy is greater than 0, and if so, determine whether The power supply mode of the microgrid is only the renewable energy power supply mode. If not, the power supply mode of the microgrid is determined to be the combined power supply mode of the renewable energy and the large power grid or the energy storage device, or the power supply mode of the large power grid only.
- the data processing module is used to determine that the power supply mode of the microgrid is a combined power supply mode of the renewable energy and the large power grid or the energy storage device, or only the power supply mode of the large power grid, specifically: the data processing module is used to determine the remaining capacity of the energy storage device. Whether it is less than or equal to the minimum remaining capacity, if so, determine that the power supply mode of the microgrid is only the large grid power supply mode, if not, determine that the power supply mode of the microgrid is the combined power supply mode of renewable energy and large grid or energy storage device.
- the information exchange, execution process, etc. between the modules of the microgrid optimization configuration device of the above example are based on the same concept as the aforementioned video coding control method of this embodiment, and its principle and technical effect are the same as those of the aforementioned microgrid.
- the power grid optimization configuration method is the same, and the specific content can be found in the description of the method implementation, which will not be repeated here.
- this embodiment further provides a computer device, including a memory and a processor, the memory stores a computer program, and the processor implements the microgrid when executing the computer program.
- Optimize configuration method is a computer device, including a memory and a processor, the memory stores a computer program, and the processor implements the microgrid when executing the computer program. Optimize configuration method.
- This embodiment also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements any of the above-mentioned data processing methods.
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Abstract
本发明提供一种微电网优化配置方法，所述方法包括：确定可再生能源的净出力功率，根据可再生能源的净出力功率确定微电网的供电模式；供电模式至少包括：仅可再生能源供电模式、可再生能源与大电网或储能装置共同供电模式和仅大电网供电模式。在微电网的供电模式确定后，还需继续对后一时刻的可再生能源的净出力功率进行确定，从而对微电网的供电模式进行更新或维持。由于微电网的分布式可再生能源有间歇性和随机性的特点，因此在供电过程中会出现不稳定的情况，通过确定可再生能源的净出力功率对微电网的供电模式进行及时切换，能够保证微电网的供电稳定，同时在可再生能源供电不足的情况下及时利用其它能源也保证了微电网内的能源得到充分利用。
Description
本发明涉及微电网领域，更具体地，涉及微电网优化配置方法、装置、设备和存储介质。
微电网是由分布式发电、负荷、储能装置及控制装置构成的一个单一可控的独立发电系统。对大电网来说，微电网可视为大电网中的一个可控单元。微电网可以看作所述小型的电力系统，它具备完整的发、输、配电功能，可以实现局部的功率平衡与能量优化，又可以认为是配电网中的一个“虚拟”的电源或负荷。
微电网通过将储能技术与分布式发电相结合，解决了分布式发电不稳定且波动的问题，例如，风电、光伏等可再生能源发电出力具有不确定性的特点。如微电网要充分利用储能以及可再生能源，提高能源利用效率，则需要平衡两者并对其进行优化容量配置。
发明内容
本发明旨在克服上述现有技术的至少一种缺陷，提供，用于解决微电网的储能能源以及可再生能源的优化配置，从而提高微电网的能源利用率。
本发明采用的技术方案为：
一种微电网优化配置方法，所述方法包括：确定可再生能源的净出力功率，根据可再生能源的净出力功率确定微电网的供电模式；微电网的供电模式至少包括：仅可再生能源供电模式、可再生能源与大电网或储能装置共同供电模式和仅大电网供电模式。
微电网的主要动力来源为可再生能源，通过确定可再生能源的净出力功率确定微电网的供电模式，由于微电网由分布式的可再生能源、储能装置构成，且微电网在电量不足时，即可再生能源或储能装置供电不足的情况下，可对微电网进行大电网的并网，因此供电模式会包括仅可再生能源供电模式、可再生能源与大电网或储能装置共同供电模式，以及仅大电网供电模式。而在微电网的供电模式确定后，还需继续对后一时刻的可再生能源的净出力功率进行确定，从而对微电网的供电模式进行更新或维持。由于微电网的分布式可再生能源如风 力或光伏发电的能源具有间歇性和随机性的特点，因此在供电过程中会出现不稳定的情况，通过确定可再生能源的净出力功率对微电网的供电模式进行及时切换，能够保证微电网的供电稳定，同时在可再生能源供电不足的情况下及时利用其它能源也保证了微电网内的能源得到充分利用。
进一步，根据可再生能源的净出力功率确定微电网的供电模式，具体为：判断可再生能源的净出力功率是否大于0，如是，则确定微电网的供电模式为仅可再生能源供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式。
进一步，确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式，具体为：判断储能装置的剩余容量是否小于或等于最小剩余容量，如是，则确定微电网的供电模式为仅大电网供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式。
在确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式或仅大电网供电模式之前，先判断储能装置的剩余容量是否已小于或等于最小剩余容量，如是，表明储能装置电量不足，且在已知可再生能源净出力小于0的情况下可得出微电网自身的供电量不足的结论，则需要选用仅大电网供电模式进行供电，借助大电网的供电保持微电网的供电稳定；如否，则表明储能装置仍存储有电量，但其电量是否满足可再生能源净出力在小于0的情况下与可再生能源共同供电满足微电网的需求，需要进一步对可再生能源与储能装置的电量和功率进行计算后才能确定，因此当储能装置的剩余容量大于最小剩余容量时，确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式。由于整个优化配置的方法会继续确定后续的可再生能源的净出力功率，如后续的可再生能源的净出力功率仍小于0，则继续判断后续的储能装置的剩余容量是否已小于或等于最小剩余容量并执行的操作，使后续的微电网供电模式得到维持或更新。
进一步，可再生能源与大电网或储能装置共同供电模式包括可再生能源与大电网共同供电模式，以及可再生能源与储能装置共同供电模式；确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，具体为：判断可再生能源与储能装置的净出力功率之和是否大于0，如是，则确定微电网的供电模式为可再生能源与储能装置共同供电模式，如否，则确定微电网的供电模式为可再生能源与大电网共同供电模式。
在确定选用微电网的供电模式为可再生能源与大电网共同供电模式，或可再生能源与储 能装置共同供电模式之前，先判断可再生能源与储能装置的净出力功率之和是否大于0，如是，则表明依靠可再生能源与储能装置的总电量足以为整个微电网进行供电，则结合两者进行供电，保持微电网的稳定；如否，则表明两者的共同出力无法满足微电网的稳定供电，因此需将可再生能源与大电网并网供电，采用可再生能源与大电网供电模式，并对储能装置进行充电，在后续对微电网的维持和更新的过程中，当储能装置的电量满足与可再生能源的净出力功率之和大于0时，则采用可再生能源与储能装置共同供电模式，由于大电网为微电网供电时会存在交换功率和交换电量的限制，因此当储能装置与可再生能源的电量能够为微电网稳定时，优先选择该模式进行供电。
进一步，确定微电网的供电模式为仅可再生能源供电模式之后，还判断储能装置的剩余容量是否大于或等于最大剩余容量，如否，则在仅可再生能源供电模式下对储能装置进行充电。
当判断可再生能源的净出力功率之和大于0后，确定微电网的供电模式为仅可再生能源供电模式，同时，还判断储能装置的剩余容量是否大于或等于最大剩余容量，如否，则在可再生能源能够满足微电网的稳定供电的情况下，对储能装置进行充电，使在后续的微电网供电模式维持或更新时不能够仅依靠可再生能源进行供电的情况下，能够优先使用可再生能源与储能装置共同供电的模式。
本发明采用的技术方案还为：
一种微电网优化配置的装置，包括：数据处理模块，用于确定可再生能源的净出力功率，根据可再生能源的净出力功率确定微电网的供电模式；微电网的供电模式至少包括：仅可再生能源供电模式、可再生能源与大电网或储能装置共同供电模式和仅大电网供电模式。
进一步，数据处理模块用于根据可再生能源的净出力功率确定微电网的供电模式，具体为：数据处理模块用于判断可再生能源的净出力功率是否大于0，如是，则确定微电网的供电模式为仅可再生能源供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式。
进一步，数据处理模块用于确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式，具体为：数据处理模块用于判断储能装置的剩余容量是否小于或等于最小剩余容量，如是，则确定微电网的供电模式为仅大电网供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式。
一种计算机设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器执 行所述计算机程序时实现上述的微电网优化配置的方法。
一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述的数据处理方法。
与现有技术相比，本发明的有益效果为：
(1)由于微电网的分布式可再生能源如风力或光伏发电的能源具有间歇性和随机性的特点，因此在供电过程中会出现不稳定的情况，通过确定可再生能源的净出力功率对微电网的供电模式进行及时切换，能够保证微电网的供电稳定，同时在可再生能源供电不足的情况下及时利用其它能源也保证了微电网内的能源得到充分利用；
(2)在仅可再生能源供电模式以及可再生能源与大电网共同供电模式下，同时对储能装置进行充电，使后续在储能装置电量充足时，能够尽快将可再生能源与大电网共同供电模式切换至可再生能源与储能装置共同供电模式，避免与大电网并网时出现交换电量或交换功率超出限制的问题。
图1为本发明的步骤S1～S233的流程示意图。
本发明附图仅用于示例性说明，不能理解为对本发明的限制。为了更好说明以下实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；对于本领域技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的。
实施例1
如图1所示，本实施例提供一种微电网优化配置方法，所述方法包括：
S1：确定可再生能源的净出力功率；
S2：根据可再生能源的净出力功率确定微电网的供电模式；
微电网的供电模式至少包括：仅可再生能源供电模式、可再生能源与大电网或储能装置共同供电模式和仅大电网供电模式。
微电网的主要动力来源为可再生能源，如风力发电、光伏发电等，通过确定可再生能源的净出力功率确定微电网的供电模式，由于微电网由分布式的可再生能源、储能装置构成， 且微电网在电量不足时，即可再生能源或储能装置供电不足的情况下，可对微电网进行大电网的并网，因此供电模式会包括仅可再生能源供电模式、可再生能源与大电网或储能装置共同供电模式，以及仅大电网供电模式。具体地，可再生能源的净出力功率一般通过可再生能源的出力功率与负荷的功率之间的差值进行确定，具体的计算公式为：P＝P
ren-P
load，其中P为可再生能源的净出力功率，P
ren为可再生能源的出力功率，P
load为负荷功率。
在微电网的供电模式确定后，还需继续对后一时刻的可再生能源的净出力功率进行确定，即在固定的时间间隔重新执行步骤S1，从而对微电网的供电模式进行更新或维持当前模式。由于微电网的分布式可再生能源如风力或光伏发电的能源具有间歇性和随机性的特点，因此在供电过程中会出现不稳定的情况，通过确定可再生能源的净出力功率对微电网的供电模式进行及时切换，能够保证微电网的供电稳定，同时在可再生能源供电不足的情况下及时利用其它能源也保证了微电网内的能源得到充分利用。
进一步，步骤S2的具体执行过程为：
S21：判断可再生能源的净出力功率是否大于0，如是，执行步骤S22；如否，执行步骤S23；
S22：确定微电网的供电模式为仅可再生能源供电模式；
S23：确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式。
由于涉及了可再生能源与大电网之间的并网，因此需要限制微电网与大电网之间的交换电量和交换功率，则微电网系统的初始功率也会取决于预测的负荷功率、可再生能源的输出功率以及交换功率限制，具体的计算公式为：P
0＝max(|P|)-P
exchange，P
0为微电网系统的初始巩固率，P为可再生能源的输出功率，可再生能源的输出功率为预测功率，根据预测的负荷功率以及参考前期的可再生能源的输出功率确认得到，P
exchange为交换功率的上限值。根据微电网系统的初始功率可计算得到微电网系统的容量初始值，具体的计算公式为：C
0＝k*P
0，C
0为微电网系统的容量初始值，k的初始值为1。
优选地，步骤S22的具体执行过程为：
S22：确定微电网的供电模式为仅可再生能源供电模式，并判断储能装置的剩余容量是否大于或等于最大剩余容量，如是，则不作任何操作；如否，则在仅可再生能源供电模式下对储能装置进行充电。
在步骤S22中，确定微电网的供电模式为仅可再生能源供电模式的同时，还判断储能装置的剩余容量是否大于或等于最大剩余容量，最大剩余容量为预设值，如否，则在可再生能源能够满足微电网的稳定供电的情况下，对储能装置进行充电，使在后续的微电网供电模式维持或更新时不能够仅依靠可再生能源进行供电的情况下，能够优先使用可再生能源与储能装置共同供电的模式。
基于上一进一步方案，步骤S23的具体执行过程为：
S231：判断储能装置的剩余容量是否小于或等于最小剩余容量，如是，执行步骤S232；如否，执行步骤S233；
S232：确定微电网的供电模式为仅大电网供电模式；
S233：确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式。
进一步，可再生能源与大电网或储能装置共同供电模式包括可再生能源与大电网共同供电模式，以及可再生能源与储能装置共同供电模式；
基于上一进一步方案，步骤S233的具体执行过程为：
S2331：判断可再生能源与储能装置的净出力功率之和是否大于0，如是，执行步骤S2332；如否，执行步骤S2333；
S2332：确定微电网的供电模式为可再生能源与储能装置共同供电模式；
S2333：确定微电网的供电模式为可再生能源与大电网共同供电模式；
在步骤S23中确定选用微电网的供电模式为可再生能源与大电网或储能装置共同供电模式或仅大电网供电模式，具体是通过步骤S231判断储能装置的剩余容量是否已小于或等于最小剩余容量，最小剩余容量为预设值，如是，执行步骤S232，表明储能装置电量不足，且在步骤S21中已知可再生能源净出力小于0的情况下可得出微电网自身的供电量不足的结论，则需要选用仅大电网供电模式进行供电，借助大电网的供电保持微电网的供电稳定；如否，执行步骤S233，表明储能装置仍存储有电量，但其电量是否满足可再生能源净出力在小于0的情况下与可再生能源共同供电满足微电网的需求，需要进一步对可再生能源与储能装置的电量和功率进行计算后才能确定，因此当储能装置的剩余容量大于最小剩余容量时，确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式。
由于整个优化配置的方法会继续确定后续的可再生能源的净出力功率，如后续的可再生能源的净出力功率仍小于0，则继续判断后续的储能装置的剩余容量是否已小于或等于最小剩余容量并执行的操作，使后续的微电网供电模式得到维持或更新。
在步骤S233中确定选用微电网的供电模式为可再生能源与大电网共同供电模式，或可再生能源与储能装置共同供电模式，是通过步骤S2331判断可再生能源与储能装置的净出力功率之和是否大于0，如是，执行步骤S2332，表明依靠可再生能源与储能装置的总电量足以为整个微电网进行供电，则结合两者进行供电，保持微电网的稳定；如否，执行步骤S2333，表明两者的共同出力无法满足微电网的稳定供电，因此需将可再生能源与大电网并网供电，采用可再生能源与大电网共同供电模式，优选地，需同时对储能装置进行充电，以保证在后续对微电网的维持和更新的过程中，当储能装置的电量满足与可再生能源的净出力功率之和大于0时，可立即采用可再生能源与储能装置共同供电模式，由于大电网为微电网供电时会存在交换功率和交换电量的限制，因此当储能装置与可再生能源的电量能够为微电网稳定时，优先选择该模式进行供电。
如执行了步骤S2333即采用可再生能源与大电网共同供电模式，则需要实时统计微电网与大电网的交换电量，按照预设的交换电量约束进行比较，若不满足交换电量约束条件，则通过调整微电网系统的电量使其满足约束条件，具体调整的方式是，由于微电网系统的初始容量C
0＝k*P
0，则可以通过调整k的值从而扩大微电网系统的容量，每次调整将k＝k+1直至微电网系统的容量C以及与大电网的交换电量满足约束条件为止，但在调整的过程中同样受到微电网自身的容量限制，因此需要综合考虑交换电量约束条件以及自身容量限制条件。在步骤S232中采用仅大电网供电模式时同样需要进行交换电量的监控和调整。
本实施例提供的微电网优化配置方法，首先执行步骤S1确定可再生能源的净出力功率，执行步骤S21判断步骤S1确定的可再生能源的净出力功率是否大于0，如是则执行步骤S22确定微电网的供电模式为仅可再生能源供电模式，在该模式下，微电网仅由可再生能源进行供电，在这一过程中，判断储能装置的剩余容量是否大于或等于最大剩余容量，如否，则在仅可再生能源供电模式下对储能装置进行充电；如否则执行步骤S231判断储能装置的剩余容量是否小于或等于最小剩余容量，如是则执行步骤S232确定微电网的供电模式为仅大电网供电模式，如否则执行步骤S2331判断可再生能源与储能装置的净出力功率之和是否大于0，如是则执行步骤S2332确定微电网的供电模式为可再生能源与储能装置共同供电模式，如否则执行步骤S2333确定微电网的供电模式为可再生能源与大电网共同供电模式，在该模式以及步骤S232确定的仅大电网供电模式下，需要实时统计微电网与大电网的交换电量，按照预设的交换电量约束进行比较，若不满足交换电量约束条件，则通过调整微电网系统的电量使其满足约束条件。在微电网的供电模式确定后，还需继续对后一时刻的可再生能源的 净出力功率进行确定，即在固定的时间间隔重新执行步骤S1并对应执行相应的后续步骤，从而对微电网的供电模式进行更新或维持当前模式，实现对微电网的电力资源的优化配置，提高能源的利用率。
基于与上述微电网优化配置方法相同的思想，本实施例还提供微电网优化配置装置，包括：数据处理模块，用于确定可再生能源的净出力功率，根据可再生能源的净出力功率确定微电网的供电模式；微电网的供电模式至少包括：仅可再生能源供电模式、可再生能源与大电网或储能装置共同供电模式和仅大电网供电模式。
进一步，数据处理模块用于根据所述可再生能源的净出力功率确定微电网的供电模式，具体为：数据处理模块用于判断所述可再生能源的净出力功率是否大于0，如是，则确定微电网的供电模式为仅可再生能源供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式。
进一步，数据处理模块用于确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式，具体为：数据处理模块用于判断储能装置的剩余容量是否小于或等于最小剩余容量，如是，则确定微电网的供电模式为仅大电网供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式。
上述示例的微电网优化配置装置的各模块之间的信息交互、执行过程等内容，由于与本实施例前述的视频编码控制方法基于同一构思，其原理和所带来的技术效果与前述的微电网优化配置方法相同，具体内容可参见方法实施方式的叙述，此处不再赘述。
基于与上述微电网优化配置方法相同的思想，本实施例还提供一种计算机设备，包括存储器和处理器，所述存储器存储有计算机程序，所述处理器执行所述计算机程序时实现上述微电网优化配置方法。
本实施例还提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述所提及的任一种数据处理方法。
显然，本发明的上述实施例仅仅是为清楚地说明本发明技术方案所作的举例，而并非是对本发明的具体实施方式的限定。凡在本发明权利要求书的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。
Claims (10)
- 一种微电网优化配置方法，其特征在于，所述方法包括：确定可再生能源的净出力功率，根据可再生能源的净出力功率确定微电网的供电模式；微电网的供电模式至少包括：仅可再生能源供电模式、可再生能源与大电网或储能装置共同供电模式和仅大电网供电模式。
- 根据权利要求1所述的微电网优化配置方法，其特征在于，根据可再生能源的净出力功率确定微电网的供电模式，具体为：判断可再生能源的净出力功率是否大于0，如是，则确定微电网的供电模式为仅可再生能源供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式。
- 根据权利要求2所述的微电网优化配置方法，其特征在于，确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式，具体为：判断储能装置的剩余容量是否小于或等于最小剩余容量，如是，则确定微电网的供电模式为仅大电网供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式。
- 根据权利要求3所述的微电网优化配置方法，其特征在于，可再生能源与大电网或储能装置共同供电模式包括可再生能源与大电网共同供电模式，以及可再生能源与储能装置共同供电模式；确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，具体为：判断可再生能源与储能装置的净出力功率之和是否大于0，如是，则确定微电网的供电模式为可再生能源与储能装置共同供电模式，如否，则确定微电网的供电模式为可再生能源与大电网共同供电模式。
- 根据权利要求2所述的微电网优化配置方法，其特征在于，确定微电网的供电模式为仅可再生能源供电模式之后，还判断储能装置的剩余容量是否大于或等于最大剩余容量，如否，则在仅可再生能源供电模式下对储能装置进行充电。
- 一种微电网优化配置的装置，其特征在于，包括：数据处理模块，用于确定可再生能源的净出力功率，根据可再生能源的净出力功率确定微电网的供电模式；微电网的供电模式至少包括：仅可再生能源供电模式、可再生能源与大电网或储能装置 共同供电模式和仅大电网供电模式。
- 根据权利要求6所述的微电网优化配置的装置，其特征在于，数据处理模块用于根据可再生能源的净出力功率确定微电网的供电模式，具体为：数据处理模块用于判断所述可再生能源的净出力功率是否大于0，如是，则确定微电网的供电模式为仅可再生能源供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式。
- 根据权利要求7所述的微电网优化配置的装置，其特征在于，数据处理模块用于确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式，或仅大电网供电模式，具体为：数据处理模块用于判断储能装置的剩余容量是否小于或等于最小剩余容量，如是，则确定微电网的供电模式为仅大电网供电模式，如否，则确定微电网的供电模式为可再生能源与大电网或储能装置共同供电模式。
- 一种计算机设备，包括存储器和处理器，所述存储器存储有计算机程序，其特征在于，所述处理器执行所述计算机程序时实现权利要求1～5任一项所述的微电网优化配置的方法。
- 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现权利要求1～5任一项所述的数据处理方法。
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