JP7182808B2 - Microgrid Dispatch Method Including Distributed Generation Based on Smart Gateways - Google Patents

Microgrid Dispatch Method Including Distributed Generation Based on Smart Gateways Download PDF

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JP7182808B2
JP7182808B2 JP2020568559A JP2020568559A JP7182808B2 JP 7182808 B2 JP7182808 B2 JP 7182808B2 JP 2020568559 A JP2020568559 A JP 2020568559A JP 2020568559 A JP2020568559 A JP 2020568559A JP 7182808 B2 JP7182808 B2 JP 7182808B2
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microgrid
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李飛偉
徐勇明
鄭懐華
茆超
高博
張沖標
何勇
李運銭
周旻
孫峰
銭偉杰
程振龍
戴元安
陳金威
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Jiaxing Hengchuang Electric Power Group Co Ltd
State Grid Jiaxing Electric Power Supply Co
Jiashan Hengxing Electric Power Construction Co Ltd
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State Grid Jiaxing Electric Power Supply Co
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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
    • H02J3/381—Dispersed generators
    • 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
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Description

本発明は、マイクログリッドの技術分野に関し、特に、スマートゲートウェイに基づく分散型電源を含むマイクログリッドのディスパッチ方法に関する。 TECHNICAL FIELD The present invention relates to the technical field of microgrids, and more particularly to a dispatch method for microgrids including distributed power sources based on smart gateways.

従来のエネルギー構造は、生態環境に深刻な圧力をもたらし、人々にエネルギー供給構造の問題を見直す必要があり、汚染のない分散型再生可能グリーンエネルギーを開発して使用する意欲は、前例がないほど強くなっている。再生可能エネルギーの開発及び利用は、地球規模のエネルギー問題と環境問題を解決するための効果的な対策の１つである。近年、風力発電所や太陽光発電所の急速な建設に伴い、大量の分散型電源が導入されて稼働するため、配電網における再生可能エネルギーの普及率（penetration rate）が急速に上昇し、フィーダーの逆潮流や局所的な過電圧の発生などの問題をもたらし、電力供給の安全性に影響を与える。高密度分散型電源が将来の電力網の発展にもたらす課題に対処するために、より効果的な分散型電源の情報導入とローカル制御技術を探索・研究する必要がある。ローカルのインテリジェント制御により、分散型再生可能エネルギーの総合的利用効率と配電網の安全性を向上させる。 The traditional energy structure has brought serious pressure on the ecological environment, people need to reconsider the problem of the energy supply structure, and the willingness to develop and use pollution-free distributed renewable green energy is unprecedented. getting stronger. Development and utilization of renewable energy is one of the effective measures to solve global energy and environmental problems. In recent years, with the rapid construction of wind farms and photovoltaic power plants, a large amount of distributed power sources have been introduced and operated, so the penetration rate of renewable energy in the distribution grid has increased rapidly, problems such as reverse power flow and local overvoltage, affecting the safety of power supply. In order to deal with the problems that high-density distributed generation will bring to the development of future power grids, it is necessary to explore and research more effective information introduction and local control technology for distributed generation. Local intelligent control improves the overall utilization efficiency of distributed renewable energy and the safety of the grid.

２０１８年９月４日に公開された中国特許ＣＮ１０８４９４０２２Ａには、従来の経済的なディスパッチ方法にピアツーピア周波数制御方法を組み込むことにより、分散型電源の出力変動又は負荷変動の場合に、電力バランスの要件を満足させ、マイクログリッドにおける分散型電源の高精度ディスパッチを実現する、マイクログリッドにおける分散型電源に基づく高精度ディスパッチ制御方法が記載されている。このような制御方法では、負荷に必要な有効電力及び無効電力と、発電機が放出する有効電力及び無効電力とはバランスしており、従来の集中型電力システムの定期的な経済的ディスパッチ方法と比較して、マイクログリッドがさまざまな運転シナリオで経済的ディスパッチの高精度制御を実現することを確保できる。しかし、この方法では、負荷に必要な有効電力及び無効電力と発電機が放出する有効電力及び無効電力とをバランスさせる方法が採用されており、マイクログリッドに大量の再生可能エネルギーの発電所が存在する場合、従来の発電機は、不適切な力率の範囲で動作してしまい、効率が低下し、さらに、従来の発電機の正常な動作にも影響を及ぼすことがある。 Chinese patent CN108494022A, published on Sep. 4, 2018, incorporates a peer-to-peer frequency control method into the traditional economical dispatch method to solve the power balance requirement in case of output fluctuation or load fluctuation of distributed power sources. A precise dispatch control method based on distributed generation in a microgrid is described, which satisfies In such a control method, the active and reactive power required by the load and the active and reactive power released by the generator are in balance, compared to the regular economical dispatch method of conventional centralized power systems. By comparison, it can ensure that microgrids achieve high-precision control of economic dispatch in different driving scenarios. However, this method adopts a method of balancing the active and reactive power required by the load and the active and reactive power emitted by the generator, and there are large amounts of renewable energy power plants in the microgrid. If so, the conventional generator will operate in an inappropriate power factor range, resulting in reduced efficiency and may also affect the normal operation of the conventional generator.

本発明が解決しようとする技術的課題は、現在の分散型電源を含むマイクログリッドのエネルギー利用効率が低いという課題である。本発明は、エネルギー利用効率を向上させることができる、スマートゲートウェイに基づく分散型電源を含むマイクログリッドのディスパッチ方法を提供している。 The technical problem to be solved by the present invention is that the energy utilization efficiency of current microgrids including distributed power sources is low. The present invention provides a dispatch method for microgrids including distributed power sources based on smart gateways, which can improve energy utilization efficiency.

Figure 0007182808000001
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Figure 0007182808000008

本発明の実質的な効果は、普及率が高い再生可能エネルギーを有するマイクログリッドのディスパッチに適しており、取り付け及び拡張が容易になり、分散型電源の導入に適しており、再生可能エネルギーの導入に適応するために新たに増加した従来のエネルギーのコストを削減させ、マイクログリッドが作動する際の信頼性と安全性を向上させ、マイクログリッドの全体的なエネルギー利用効率を向上させることである。 The substantial effect of the present invention is that it is suitable for dispatching microgrids with renewable energy with a high penetration rate, is easy to install and expand, is suitable for the introduction of distributed power sources, and is suitable for the introduction of renewable energy. The purpose is to reduce the cost of newly increased conventional energy to adapt to the future, improve the reliability and safety of microgrid operation, and improve the overall energy utilization efficiency of the microgrid.

実施例１のマイクログリッドのディスパッチ方法のフローチャートである。4 is a flow chart of a microgrid dispatching method of Example 1. FIG. 実施例１の太陽光・風力発電所の電力配分方法のフローチャートである。1 is a flow chart of a method for allocating power in a solar/wind power plant according to Embodiment 1; 実施例１のスマートゲートウェイのローカル電力制御方法のフローチャートである。4 is a flow chart of a local power control method for a smart gateway of Embodiment 1; 実施例１のスマートゲートウェイの構成の模式図である。1 is a schematic diagram of a configuration of a smart gateway of Embodiment 1; FIG.

１００ 通信モジュール、２００ 監視モジュール、３００ 制御モジュール、４００ 位相監視モジュール、５００ 周波数監視モジュール。 100 communication module, 200 monitoring module, 300 control module, 400 phase monitoring module, 500 frequency monitoring module.

以下、本発明の具体的な実施形態について、具体的な実施例により、且つ図面を参照してさらに詳細に説明する。 Specific embodiments of the present invention will now be described in more detail by way of specific examples and with reference to the drawings.

実施例１：
本実施例に係る発明は、スマートゲートウェイに基づく分散型電源を含むマイクログリッドのディスパッチ方法であって、分散型電源がエネルギー貯蔵所と太陽光・風力発電所とを含む。図１に示すように、本実施例は、以下のステップＡ）～D）を含む。 Example 1:
The invention according to this embodiment is a micro-grid dispatching method including smart gateway-based distributed power generation, where the distributed power generation includes energy storage and solar and wind farms. As shown in FIG. 1, this embodiment includes the following steps A) to D).

Figure 0007182808000009
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Figure 0007182808000010
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Figure 0007182808000013
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Figure 0007182808000014
Figure 0007182808000014

本実施例は、監視モジュール２００、位相監視モジュール４００及び周波数監視モジュール５００により、ノードの対応する状態データを取得するだけで、導入及びディスパッチのタスクを完了でき、取り付け及び拡張が容易になり、分散型電源の導入に適している。配電網の無効電力が占める比率は比較的大きい場合、一部の無効電力を出力するように分散型電源をディスパッチすると、一部の利益を減少させるが、変圧器の動作力率を効果的に向上させ、マイクログリッドの安定性を向上させ、再生可能エネルギーの導入に適応するために新たに増加した従来のエネルギーのコストを大幅に削減させることができ、普及率が高い再生可能エネルギーのマイクログリッドのディスパッチに適している。 This embodiment uses the monitoring module 200, the phase monitoring module 400 and the frequency monitoring module 500 to complete the installation and dispatch tasks by simply acquiring the corresponding status data of the node, which facilitates installation and expansion and distributed It is suitable for introducing a type power supply. When the proportion of reactive power in the distribution network is relatively large, dispatching the distributed generation to output some reactive power will reduce some profits, but will effectively reduce the working power factor of the transformer. A renewable energy microgrid with a high penetration rate, which can significantly reduce the cost of conventional energy, which has been newly increased to improve the stability of the microgrid and adapt to the introduction of renewable energy. suitable for dispatching

Figure 0007182808000015
Figure 0007182808000015

上記実施例は、本発明の好ましい態様に過ぎず、本発明をいかなる形でも制限するものではなく、特許請求の範囲に記載された技術的解決手段から逸脱しない限り、他の変形及び修正が存在している。
The above embodiments are only preferred aspects of the present invention, and do not limit the present invention in any way, and other variations and modifications exist without departing from the technical solutions described in the claims. is doing.

Claims (7)

スマートゲートウェイに基づく分散型電源を含むマイクログリッドのディスパッチ方法であって、前記分散型電源がエネルギー貯蔵所及び太陽光・風力発電所を含み、この方法は、
Figure 0007182808000016
A method of dispatching a microgrid comprising distributed power generation based on smart gateways, said distributed power generation comprising energy storage and solar and wind farms, the method comprising:
Figure 0007182808000016
Figure 0007182808000017
Figure 0007182808000017
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Figure 0007182808000021
Figure 0007182808000021
Figure 0007182808000022
Figure 0007182808000022
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