CN103872701A - Energy-storage type alternating current and direct current mixed micro-grid and control method thereof - Google Patents
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Abstract
The invention discloses an energy-storage type alternating current and direct current mixed micro-grid and a control method thereof. The energy-storage type alternating current and direct current mixed micro-grid comprises an alternating current micro-grid, a direct current micro-grid, a battery energy-storage system and an energy management system EMS, which are connected with an external grid control center. The control method of the energy-storage type alternating current and direct current mixed micro-grid comprises the following steps of initializing the EMS to acquire information data of the alternating current micro-grid, the direct current micro-grid and the battery energy-storage system; acquiring information data of an external public grid in real time; regulating and controlling the alternating current micro-grid, the direct current micro-grid and the battery energy-storage system according to the acquired data. The energy-storage type alternating current and direct current mixed micro-grid and the control method thereof have the advantages that the energy utilization efficiency can be improved, the size of a transformer can be reduced, networking and controlling are more flexible, the cost is reduced, and the power supply reliability of the whole system is improved.
Description
Technical Field
The invention relates to an energy storage type alternating current and direct current hybrid micro-grid and a control method thereof.
Background
At present, in a large power supply system or other microgrid systems, a single microgrid system mainly including an alternating current microgrid or a direct current microgrid is mainly used. For a single microgrid system, there are disadvantages in this respect: more and more electric equipment needs direct current power supply, and compared with the conversion from direct current to direct current through an alternating current power grid, the converter has the advantages of large equipment volume, high cost, low alternating current conversion efficiency and serious energy loss; the single alternating current or direct current micro-grid has the advantages of more power conversion equipment, large volume and low system power supply reliability; meanwhile, with increasing attention on energy conservation and environmental protection, direct current electric energy is output by a solar distributed generation system, an elevator energy-saving energy recovery system and the like, and convenience is brought to flexible access of renewable energy sources; in addition, most micro-grid systems are simple to control and manage, and an effective energy control method does not fully consider the energy utilization efficiency of the system.
Disclosure of Invention
In order to solve the problems, the invention provides an energy storage type alternating current-direct current hybrid microgrid and a design scheme of a control method thereof.
An energy storage type alternating current-direct current hybrid microgrid comprises an alternating current microgrid, a direct current microgrid, a battery energy storage system and an energy management system EMS (energy management system) connected with the alternating current microgrid, the direct current microgrid and the battery energy storage system, wherein the alternating current microgrid and the direct current microgrid are connected through one or more bidirectional DC/AC converters, and the alternating current microgrid and the direct current microgrid are respectively connected with the battery energy storage system through one or more bidirectional AC/DC converters and one or more bidirectional DC/DC converters; and the energy management system EMS is also connected with an external power grid control center.
The alternating-current microgrid comprises an alternating-current bus, one or more bidirectional AC/AC converters connected to the alternating-current bus for connecting with an external public power grid, one or more bidirectional AC/DC converters for exchanging energy with external electric equipment (corresponding to an electric automobile, an alternating-current load and the like), and one or more AC/AC converters for connecting with other alternating-current power generation systems.
The direct-current microgrid comprises a direct-current bus, one or more DC/DC converters connected to the direct-current bus and used for connecting other direct-current power generation systems, one or more bidirectional DC/DC converters used for connecting external electric equipment (equivalent to an electric automobile, a direct load and the like), and one or more DC/DC converters.
The energy management system EMS comprises a main control unit, a direct-current micro-grid monitoring unit connected with the direct-current micro-grid, an alternating-current micro-grid monitoring unit connected with the alternating-current micro-grid and a battery management unit connected with the battery energy storage system; the direct-current micro-grid monitoring unit, the alternating-current micro-grid monitoring unit and the battery management unit are all connected with the main control unit. The direct-current microgrid monitoring unit and the alternating-current microgrid monitoring unit are respectively connected with each converter of the direct-current microgrid and each converter of the alternating-current microgrid through communication buses; the alternating-current micro-grid monitoring unit is connected with each converter connected with the alternating-current micro-grid and the direct-current micro-grid; the battery management unit is respectively connected with the direct-current micro-grid and the alternating-current micro-grid through one or more bidirectional DC/DC converters and one or more bidirectional AC/DC converters.
The direct-current microgrid monitoring unit and the alternating-current microgrid monitoring unit are respectively connected with each converter of the direct-current microgrid and each converter of the alternating-current microgrid through communication buses; and the alternating-current micro-grid monitoring unit is connected with each converter connected with the alternating-current micro-grid and the direct-current micro-grid.
A control method of an energy storage type alternating current-direct current hybrid microgrid comprises the following steps: (1) initializing an Energy Management System (EMS); (2) the energy management system EMS acquires information data of the alternating current micro-grid, the direct current micro-grid and the storage battery energy storage system of the battery energy storage system; (3) an energy management system EMS acquires information data of an external public power grid in real time; (4) and regulating and controlling the alternating current micro-grid, the direct current micro-grid and the battery energy storage system according to the acquired data.
The information data in the step (2) comprises: (I) the load states of the alternating-current micro-grid, the direct-current micro-grid, the battery energy storage system and the external public power grid; and (II) generating power of a power generation system in the alternating current micro-grid and the direct current micro-grid, and the current residual power of a battery energy storage system. The information data in the step (3) comprises: the method comprises the following steps of predicting a load curve of an external public power grid, predicting a charging curve of an electric automobile and predicting a generating power of a generating system in the AC/DC micro grid.
The method for acquiring the load states of the alternating-current micro-grid, the direct-current micro-grid, the battery energy storage system and the external public power grid comprises the following steps: acquiring the flow direction and the magnitude of the current main node power through a bidirectional AC/AC converter connected with an external public power grid; the method comprises the following steps of connecting data of all bidirectional AC/DC converters of an alternating-current micro-grid and a direct-current micro-grid, connecting all bidirectional AC/DC converters of external electric equipment and all bidirectional DC/DC converters of the external electric equipment, and according to a constant power control principle of a slave node of the alternating-current micro-grid:and a constant power control principle of the slave node of the direct-current micro-grid is as follows:
calculating the energy flow direction and the energy flow size of the current alternating current micro-grid, the current direct current micro-grid and the battery energy storage system; wherein
Is a direct-current load, and the load is a direct-current load,
is an alternating current load, and is provided with a plurality of alternating current load,
to generate power for the direct current power generation system,
to generate power for the ac power generation system,the power is provided for the power grid,to store the power stored in the system for the battery,
the power required by the battery system of the electric automobile.
The method of the step (4) comprises the following steps: (41) the energy management system EMS judges whether the abundant electric energy needs to be fed back to the external public power grid or not according to each prediction curve; (42) and the energy management system EMS acquires an optimal power path through an efficiency optimization algorithm according to the load size, and adjusts the combination and load distribution combination of each converter according to the optimal power path.
The method for judging whether the surplus electric energy needs to be fed back to the external public power grid or not in the step (41) comprises the following steps: calculating the energy storage requirement of whether the power of the direct current power generation system can be full of the battery energy storage system in the future unit time according to each piece of predicted data, and if so, sending a related instruction to a related bidirectional AC/DC converter to feed back the redundant electric energy of the alternating current micro-grid to an external public network; if the power of the direct-current power generation system in unit time in the future cannot meet the energy storage requirement of the battery energy storage system and the load requirement in the alternating-current/direct-current microgrid is large in the future, a related instruction is sent to a related bidirectional AC/DC converter to store the redundant electric energy of the alternating-current microgrid in the battery system.
Said step (42) further comprises the steps of: (42a) when the energy management system EMS detects that the load power of the direct current micro-grid is greater than the generating power of the direct current generating equipment in the direct current micro-grid, the energy management system EMS is based on the optimal power path objective function:
a reasonable power path is calculated.
(42b) When the energy management system EMS detects that the load power of the alternating-current micro-grid is greater than the power generation power of alternating-current power generation equipment in the alternating-current micro-grid, and the direct-current power generation power in the direct-current micro-grid is less than the direct-current load power in the direct-current micro-grid, the energy management system EMS is based on the optimal power path objective function:
(42c) When the energy management system EMS detects that the load power of the alternating-current micro-grid is greater than the generating power of alternating-current generating equipment in the alternating-current micro-grid, and the direct-current generating power in the direct-current micro-grid is greater than the direct-current load power in the direct-current micro-grid, the energy management system EMS is based on the optimal power path objective function:
Wherein,
as a function of the forward conversion efficiency of the bi-directional DC/AC converter,for a bi-directional DC/AC converter to reverse conversion efficiency functions,
for a bi-directional AC/DC converter forward conversion efficiency function,for the reverse conversion efficiency function of the AC/DC direct current converter,
as a function of the forward conversion efficiency of the bi-directional DC/DC converter,
for a bi-directional DC/DC converter to reverse the conversion efficiency function,
for a bi-directional AC/AC converter forward conversion efficiency function,for a bi-directional AC/AC converter to reverse conversion efficiency functions,as a function of the efficiency of the unidirectional AC/AC converter,
as a function of the efficiency of the unidirectional DC/DC converter.
In conclusion, the invention has the following beneficial effects: (1) through modularization of each converter, the load and the power generation unit can be flexibly connected, the environment that alternating current is converted into direct current is reduced, the energy utilization efficiency is improved, the size of the converter is reduced, meanwhile, the investment of reactive compensation equipment is reduced, and the cost is saved; (2) the AC/DC micro-grid adopts distributed management, so that the control efficiency of the system is greatly improved, and the control is more flexible; (3) the alternating current-direct current micro-grid adopts alternating current-direct current hybrid power supply, and a battery energy storage system is added, so that the reliability of the power supply of the whole system is improved; (4) the system is in real-time communication interaction with an external public power grid, energy storage and output are carried out when necessary, the effects of peak clipping and valley filling of the external public power grid can be achieved, the positive effect on balancing the whole power grid is achieved, the utilization efficiency is improved, and the power utilization cost is reduced; (5) the network is flexible, can be quickly networked from small to single building to large area power supply.
Drawings
Fig. 1 is a schematic diagram of an overall structure of an energy storage type alternating current-direct current hybrid microgrid provided by the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the invention discloses an energy storage type alternating current-direct current hybrid microgrid, which comprises an alternating current microgrid, a direct current microgrid, a battery energy storage system and an energy management system EMS connected with the alternating current microgrid, the direct current microgrid and the battery energy storage system, wherein the alternating current microgrid and the direct current microgrid are connected through one or more bidirectional DC/AC converters to realize energy exchange.
The alternating-current micro-grid and the direct-current micro-grid are respectively connected with the battery energy storage system through one or more bidirectional AC/DC converters and one or more bidirectional DC/DC converters, and the battery energy storage system can be charged and discharged; the energy management system EMS is also connected to an external grid control center.
The AC microgrid comprises an AC BUS (AC BUS), one or more bidirectional AC/AC converters connected to the AC BUS for connection to an external utility grid, one or more bidirectional AC/DC converters for energy exchange with external consumers, one or more AC/AC converters for connection to other AC power generation systems. The power generation system can be an alternating current power generation system such as oil engine power generation, wind power generation and the like.
The direct-current microgrid comprises a direct-current BUS (DC BUS), one or more DC/DC converters connected to the direct-current BUS and used for being connected with other direct-current power generation systems (such as photovoltaic power generation systems), one or more bidirectional DC/DC converters used for being connected with external electric equipment (such as external load electrical appliances, electric vehicle charging and discharging interfaces and corollary equipment thereof and the like), and one or more DC/DC converters.
The energy management system EMS comprises a main control unit, a direct-current micro-grid monitoring unit connected with the direct-current micro-grid, an alternating-current micro-grid monitoring unit connected with the alternating-current micro-grid and a battery management unit connected with the battery energy storage system and used for collecting battery information (information such as voltage, current, temperature and SOC) in real time; the direct-current micro-grid monitoring unit, the alternating-current micro-grid monitoring unit and the battery management unit are all connected with the main control unit. The direct-current microgrid monitoring unit and the alternating-current microgrid monitoring unit are respectively connected with each converter of the direct-current microgrid and each converter of the alternating-current microgrid through communication buses; and the alternating-current micro-grid monitoring unit is connected with each converter connected with the alternating-current micro-grid and the direct-current micro-grid. The direct-current microgrid monitoring unit and the alternating-current microgrid monitoring unit are respectively connected with each converter of the direct-current microgrid and each converter of the alternating-current microgrid through communication buses; and the alternating-current micro-grid monitoring unit is connected with each converter connected with the alternating-current micro-grid and the direct-current micro-grid. The direct-current micro-grid monitoring unit, the alternating-current micro-grid monitoring unit and the battery management unit realize data and information exchange with other nodes (the nodes comprise all converters) through communication buses, and communicate with a power grid center through a wired or wireless network to realize information transmission. The energy management system EMS may also be connected to an external grid control center in a wired or wireless manner to submit or obtain relevant data, such as external public grid load prediction curves.
The invention also discloses an energy storage type alternating current-direct current hybrid micro-grid control method which comprises the following steps.
(1) Energy management system EMS initializes.
(2) The energy management system EMS acquires information data of the alternating current micro-grid, the direct current micro-grid and the storage battery energy storage system of the battery energy storage system; the method comprises the following steps: the load states of the alternating-current micro-grid, the direct-current micro-grid, the battery energy storage system and the external public power grid; the power generation system comprises the power generation power of the power generation system in the alternating current micro-grid and the direct current micro-grid and the current residual power of the battery energy storage system.
The method for acquiring the load states of the alternating-current micro-grid, the direct-current micro-grid, the battery energy storage system and the external public power grid comprises the following steps: acquiring the flow direction and the magnitude of the current main node power through a bidirectional AC/AC converter connected with an external public power grid; the method comprises the following steps of connecting data of all bidirectional AC/DC converters of an alternating-current micro-grid and a direct-current micro-grid, connecting all bidirectional AC/DC converters of external electric equipment and all bidirectional DC/DC converters of the external electric equipment, and according to a constant power control principle of a slave node of the alternating-current micro-grid:
and a constant power control principle of the slave node of the direct-current micro-grid is as follows:calculating the energy flow direction and the energy flow size of the current alternating current micro-grid, the current direct current micro-grid and the battery energy storage system; wherein
Is a direct-current load, and the load is a direct-current load,
is an alternating current load, and is provided with a plurality of alternating current load, 
to generate power for the direct current power generation system,
to generate power for the ac power generation system,
the power is provided for the power grid,
to store the power stored in the system for the battery,
the power required by the battery system of the electric automobile.
(3) The energy management system EMS acquires information data of an external public power grid in real time (from an external power grid control center), and the information data comprises the following steps: and inquiring the electric vehicle charging prediction curve and the power generation system power generation prediction curve in the alternating current-direct current micro-grid in real time according to the historical statistical data.
(4) And regulating and controlling the alternating current micro-grid, the direct current micro-grid and the battery energy storage system according to the acquired data. The energy management system EMS judges whether the abundant electric energy needs to be fed back to the external public power grid or not according to each prediction curve; and the energy management system EMS acquires an optimal power path through an efficiency optimization algorithm according to the load size, and adjusts the combination and load distribution combination of each converter according to the optimal power path.
The method for judging whether the abundant electric energy needs to be fed back to the external public power grid comprises the following steps: calculating the energy storage requirement of whether the power of the direct current power generation system can be full of the battery energy storage system in the future unit time according to each piece of predicted data, and if so, sending a related instruction to a related bidirectional AC/DC converter to feed back the redundant electric energy of the alternating current micro-grid to an external public network; if the power of the direct-current power generation system in unit time in the future cannot meet the energy storage requirement of the battery energy storage system and the load requirement in the alternating-current/direct-current microgrid is large in the future, a related instruction is sent to a related bidirectional AC/DC converter to store the redundant electric energy of the alternating-current microgrid in the battery system.
(42a) When the energy management system EMS detects that the load power of the direct current micro-grid is greater than the generating power of the direct current generating equipment in the direct current micro-grid, the energy management system EMS is based on the optimal power path objective function:
(42b) When the energy management system EMS detects that the load power of the alternating-current micro-grid is greater than the power generation power of alternating-current power generation equipment in the alternating-current micro-grid, and the direct-current power generation power in the direct-current micro-grid is less than the direct-current load power in the direct-current micro-grid, the energy management system EMS is based on the optimal power path objective function:
(42c) When the energy management system EMS detects that the load power of the alternating-current micro-grid is greater than the generating power of alternating-current generating equipment in the alternating-current micro-grid, and the direct-current generating power in the direct-current micro-grid is greater than the direct-current load power in the direct-current micro-grid, the energy management system EMS is based on the optimal power path objective function:
Wherein,
as a function of the forward conversion efficiency of the bi-directional DC/AC converter,for a bi-directional DC/AC converter to reverse conversion efficiency functions,for a bi-directional AC/DC converter forward conversion efficiency function,
for the reverse conversion efficiency function of the AC/DC direct current converter,
as a function of the forward conversion efficiency of the bi-directional DC/DC converter,
for a bi-directional DC/DC converter to reverse the conversion efficiency function,
for a bi-directional AC/AC converter forward conversion efficiency function,for a bi-directional AC/AC converter to reverse conversion efficiency functions,as a function of the efficiency of the unidirectional AC/AC converter,
as a function of the efficiency of the unidirectional DC/DC converter.
This example is only a preferred embodiment of the present invention, and well-known and well-established techniques are used for those parts not described in detail. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications should fall within the scope of the appended claims.
Claims (10)
1. An energy storage type alternating current-direct current hybrid microgrid comprises an alternating current microgrid, a direct current microgrid and a battery energy storage system, and is characterized by further comprising an energy management system EMS connected with the alternating current microgrid, the direct current microgrid and the battery energy storage system, wherein the alternating current microgrid and the direct current microgrid are connected through one or more bidirectional DC/AC converters, and the alternating current microgrid and the direct current microgrid are respectively connected with the battery energy storage system through one or more bidirectional AC/DC converters and one or more bidirectional DC/DC converters; and the energy management system EMS is also connected with an external power grid control center.
2. The energy storage type alternating current-direct current hybrid microgrid of claim 1 is characterized in that: the alternating-current microgrid comprises an alternating-current bus, one or more bidirectional AC/AC converters connected to the alternating-current bus and used for being connected with an external public power grid, one or more bidirectional AC/DC converters used for exchanging energy with external electric equipment, and one or more AC/AC converters used for being connected with other alternating-current power generation systems.
3. The energy storage type alternating current-direct current hybrid microgrid of claim 2, characterized in that: the direct-current microgrid comprises a direct-current bus, one or more DC/DC converters connected to the direct-current bus and used for connecting other direct-current power generation systems, one or more bidirectional DC/DC converters used for connecting external electric equipment and one or more DC/DC converters.
4. The energy storage type alternating current-direct current hybrid microgrid of claim 3, characterized in that: the energy management system EMS comprises a main control unit, a direct-current micro-grid monitoring unit connected with the direct-current micro-grid, an alternating-current micro-grid monitoring unit connected with the alternating-current micro-grid and a battery management unit connected with the battery energy storage system; the direct-current micro-grid monitoring unit, the alternating-current micro-grid monitoring unit and the battery management unit are all connected with the main control unit;
the direct-current microgrid monitoring unit and the alternating-current microgrid monitoring unit are respectively connected with each converter of the direct-current microgrid and each converter of the alternating-current microgrid through communication buses;
the alternating-current micro-grid monitoring unit is connected with each converter connected with the alternating-current micro-grid and the direct-current micro-grid;
the battery management unit is respectively connected with the direct-current micro-grid and the alternating-current micro-grid through one or more bidirectional DC/DC converters and one or more bidirectional AC/DC converters.
5. A control method of an energy storage type alternating current-direct current hybrid microgrid is characterized by comprising the following steps:
(1) initializing an Energy Management System (EMS);
(2) the energy management system EMS acquires information data of the alternating current micro-grid, the direct current micro-grid and the storage battery energy storage system of the battery energy storage system;
(3) an energy management system EMS acquires information data of an external public power grid in real time;
(4) and regulating and controlling the alternating current micro-grid, the direct current micro-grid and the battery energy storage system according to the acquired data.
6. The method according to claim 5, wherein the information data in the step (2) includes:
(I) the load states of the alternating-current micro-grid, the direct-current micro-grid, the battery energy storage system and the external public power grid;
(II) generating power of a power generation system in the alternating current micro-grid and the direct current micro-grid, and current residual power of a battery energy storage system; the information data in the step (3) comprises: the method comprises the following steps of predicting a load curve of an external public power grid, predicting a charging curve of an electric automobile and predicting a generating power of a generating system in the AC/DC micro grid.
7. The method for controlling the energy storage type alternating current/direct current hybrid microgrid according to claim 6, wherein the method for acquiring the load states of the alternating current microgrid, the direct current microgrid, the battery energy storage system and the external public power grid comprises the following steps: acquiring the flow direction and the magnitude of the current main node power through a bidirectional AC/AC converter connected with an external public power grid;
the method comprises the following steps of connecting data of all bidirectional AC/DC converters of an alternating-current micro-grid and a direct-current micro-grid, connecting all bidirectional AC/DC converters of external electric equipment and all bidirectional DC/DC converters of the external electric equipment, and according to a constant power control principle of a slave node of the alternating-current micro-grid:
constant power control source of slave node of DC micro-gridThen:
calculating the energy flow direction and the energy flow size of the current alternating current micro-grid, the current direct current micro-grid and the battery energy storage system;
wherein therein
Is a direct-current load, and the load is a direct-current load,
is an alternating current load, and is provided with a plurality of alternating current load,
to generate power for the direct current power generation system,
to generate power for the ac power generation system,
the power is provided for the power grid,
to store the power stored in the system for the battery,
the power required by the battery system of the electric automobile.
8. The method for controlling the energy storage type alternating current/direct current hybrid microgrid according to claim 7, wherein the method in the step (4) is as follows:
(41) the energy management system EMS judges whether the abundant electric energy needs to be fed back to the external public power grid or not according to each prediction curve;
(42) and the energy management system EMS acquires an optimal power path through an efficiency optimization algorithm according to the load size, and adjusts the combination and load distribution combination of each converter according to the optimal power path.
9. The method for controlling the energy storage type ac/dc hybrid microgrid according to claim 8, wherein the step (41) of determining whether the surplus electric energy needs to be fed back to the external public power grid is performed by: calculating the energy storage requirement of whether the power of the direct current power generation system can be full of the battery energy storage system in the future unit time according to each piece of predicted data, and if so, sending a related instruction to a related bidirectional AC/DC converter to feed back the redundant electric energy of the alternating current micro-grid to an external public network; if the power of the direct-current power generation system in unit time in the future cannot meet the energy storage requirement of the battery energy storage system and the load requirement in the alternating-current/direct-current microgrid is large in the future, a related instruction is sent to a related bidirectional AC/DC converter to store the redundant electric energy of the alternating-current microgrid in the battery system.
10. The energy storage type alternating current-direct current hybrid microgrid control method according to claim 9, characterized in that the step (42) further comprises the following steps:
(42a) when the energy management system EMS detects that the load power of the direct current micro-grid is greater than the generating power of the direct current generating equipment in the direct current micro-grid, the energy management system EMS is based on the optimal power path objective function:
(42b) when the energy management system EMS detects that the load power of the alternating-current micro-grid is greater than the power generation power of alternating-current power generation equipment in the alternating-current micro-grid, and the direct-current power generation power in the direct-current micro-grid is less than the direct-current load power in the direct-current micro-grid, the energy management system EMS is based on the optimal power path objective function:
(42c) when the energy management system EMS detects that the load power of the alternating-current micro-grid is greater than the generating power of alternating-current generating equipment in the alternating-current micro-grid, and the direct-current generating power in the direct-current micro-grid is greater than the direct-current load power in the direct-current micro-grid, the energy management system EMS is based on the optimal power path objective function:
wherein,
as a function of the forward conversion efficiency of the bi-directional DC/AC converter,
for a bi-directional DC/AC converter to reverse conversion efficiency functions,
for a bi-directional AC/DC converter forward conversion efficiency function,for the reverse conversion efficiency function of the AC/DC direct current converter,
as a function of the forward conversion efficiency of the bi-directional DC/DC converter,
for a bi-directional DC/DC converter to reverse the conversion efficiency function,
for a bi-directional AC/AC converter forward conversion efficiency function,
for a bi-directional AC/AC converter to reverse conversion efficiency functions,as a function of the efficiency of the unidirectional AC/AC converter,
as a function of the efficiency of the unidirectional DC/DC converter.
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| CN104065101A (en) * | 2014-06-26 | 2014-09-24 | 华电电力科学研究院 | Distributed microgrid energy management system |
| CN104300589A (en) * | 2014-10-30 | 2015-01-21 | 国家电网公司 | Hierarchical control method for ad/dc microgrid with direct voltage recovery character |
| CN104485689A (en) * | 2014-12-12 | 2015-04-01 | 合肥工业大学 | Adaptive mode switching based droop control method |
| CN104682375A (en) * | 2015-03-24 | 2015-06-03 | 华为技术有限公司 | Power supply equipment and power supply method for data center |
| CN105244909A (en) * | 2015-10-14 | 2016-01-13 | 国网河南省电力公司电力科学研究院 | Direct-current micro-grid system and grid-connection self-balancing control strategy |
| CN105305474A (en) * | 2015-12-01 | 2016-02-03 | 河北凯翔电气科技股份有限公司 | Power network load rapid balance adjusting system and control method thereof |
| CN105449821A (en) * | 2015-12-09 | 2016-03-30 | 国家电网公司 | AC-DC hybrid microgrid system |
| CN105552940A (en) * | 2015-12-22 | 2016-05-04 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Distributed global optimum energy management system based on an alternating direction method of multipliers |
| CN105896619A (en) * | 2016-05-03 | 2016-08-24 | 北京北变微电网技术有限公司 | V2G AC/DC hybrid micro-grid control method |
| CN105914885A (en) * | 2016-05-17 | 2016-08-31 | 中国铁塔股份有限公司重庆市分公司 | Base station oil engine power generation monitoring and signal obtaining integrated terminal, and signal obtaining method |
| CN105914799A (en) * | 2016-05-03 | 2016-08-31 | 北京北变微电网技术有限公司 | V2G (Vehicle-to-grid) AC-DC mixed micro grid power supply system and structure |
| CN106058935A (en) * | 2016-07-27 | 2016-10-26 | 芜湖格利特新能源科技有限公司 | Distributed type wind and optical energy storing and charging integrated micro power grid system |
| CN106374533A (en) * | 2016-10-28 | 2017-02-01 | 西安特锐德智能充电科技有限公司 | Micro energy network system |
| CN106487086A (en) * | 2016-11-25 | 2017-03-08 | 国网江苏省电力公司扬州供电公司 | A kind of direct-current micro-grid control method for coordinating containing electric automobile management of charging and discharging |
| CN106505615A (en) * | 2016-11-16 | 2017-03-15 | 常州天合光能有限公司 | A kind of electric automobile charging station electric power system based on independent micro-grid |
| CN106505552A (en) * | 2016-11-10 | 2017-03-15 | 太原理工大学 | A kind of double-deck bus direct-current grid and its control method based on power pond |
| CN106788140A (en) * | 2017-01-20 | 2017-05-31 | 合肥聚能新能源科技有限公司 | A kind of modularization common DC bus photovoltaic energy storage system |
| CN107147148A (en) * | 2017-06-22 | 2017-09-08 | 湖南省德沃普储能有限公司 | A kind of system and its grid-connected control method of the light source of bank savings and steam energy heat pump based on electricity price between peak and valley |
| CN107465229A (en) * | 2017-09-01 | 2017-12-12 | 深圳市高斯宝电气技术有限公司 | A kind of battery charging and discharging system |
| CN107785931A (en) * | 2017-10-16 | 2018-03-09 | 电子科技大学 | A kind of small-sized electric energy management is with coordinating control integrated apparatus |
| CN108039714A (en) * | 2017-11-24 | 2018-05-15 | 国网北京市电力公司 | Energy storage device, the control method based on energy storage device and device |
| CN108539747A (en) * | 2018-05-18 | 2018-09-14 | 广东工业大学 | A kind of grid type alternating current-direct current mixing micro-capacitance sensor control system and method |
| WO2021073049A1 (en) * | 2019-10-18 | 2021-04-22 | 深圳英飞源技术有限公司 | Centralized energy storage charging pile |
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| CN114221365A (en) * | 2021-12-10 | 2022-03-22 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Electric energy control method based on V2G microgrid system and V2G microgrid system |
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| CN116154775A (en) * | 2023-04-20 | 2023-05-23 | 中建科技集团有限公司 | AC/DC hybrid micro-grid system based on photovoltaic power supply and control method thereof |
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| CN104065101A (en) * | 2014-06-26 | 2014-09-24 | 华电电力科学研究院 | Distributed microgrid energy management system |
| CN104300589A (en) * | 2014-10-30 | 2015-01-21 | 国家电网公司 | Hierarchical control method for ad/dc microgrid with direct voltage recovery character |
| CN104485689B (en) * | 2014-12-12 | 2016-08-24 | 合肥工业大学 | Droop control method based on adaptive model switching |
| CN104485689A (en) * | 2014-12-12 | 2015-04-01 | 合肥工业大学 | Adaptive mode switching based droop control method |
| CN104682375A (en) * | 2015-03-24 | 2015-06-03 | 华为技术有限公司 | Power supply equipment and power supply method for data center |
| US10014717B2 (en) | 2015-03-24 | 2018-07-03 | Huawei Technologies Co., Ltd. | Power supply device and power supply method in data center |
| CN105244909A (en) * | 2015-10-14 | 2016-01-13 | 国网河南省电力公司电力科学研究院 | Direct-current micro-grid system and grid-connection self-balancing control strategy |
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| CN105305474A (en) * | 2015-12-01 | 2016-02-03 | 河北凯翔电气科技股份有限公司 | Power network load rapid balance adjusting system and control method thereof |
| CN105449821A (en) * | 2015-12-09 | 2016-03-30 | 国家电网公司 | AC-DC hybrid microgrid system |
| CN105552940A (en) * | 2015-12-22 | 2016-05-04 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Distributed global optimum energy management system based on an alternating direction method of multipliers |
| CN105552940B (en) * | 2015-12-22 | 2018-03-13 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Distributed global optimum's EMS based on alternating direction Multiplier Algorithm |
| CN105896619A (en) * | 2016-05-03 | 2016-08-24 | 北京北变微电网技术有限公司 | V2G AC/DC hybrid micro-grid control method |
| CN105914799A (en) * | 2016-05-03 | 2016-08-31 | 北京北变微电网技术有限公司 | V2G (Vehicle-to-grid) AC-DC mixed micro grid power supply system and structure |
| CN105896619B (en) * | 2016-05-03 | 2018-10-12 | 北京北变微电网技术有限公司 | V2G alternating current-direct current mixing micro-capacitance sensor control methods |
| CN105914799B (en) * | 2016-05-03 | 2018-12-07 | 北京北变微电网技术有限公司 | V2G alternating current-direct current mixing micro-capacitance sensor power architecture |
| CN105914885A (en) * | 2016-05-17 | 2016-08-31 | 中国铁塔股份有限公司重庆市分公司 | Base station oil engine power generation monitoring and signal obtaining integrated terminal, and signal obtaining method |
| CN106058935A (en) * | 2016-07-27 | 2016-10-26 | 芜湖格利特新能源科技有限公司 | Distributed type wind and optical energy storing and charging integrated micro power grid system |
| CN106374533B (en) * | 2016-10-28 | 2024-04-30 | 西安特来电智能充电科技有限公司 | Miniature energy network system |
| CN106374533A (en) * | 2016-10-28 | 2017-02-01 | 西安特锐德智能充电科技有限公司 | Micro energy network system |
| CN106505552A (en) * | 2016-11-10 | 2017-03-15 | 太原理工大学 | A kind of double-deck bus direct-current grid and its control method based on power pond |
| CN106505552B (en) * | 2016-11-10 | 2019-01-04 | 太原理工大学 | A kind of double-deck bus direct-current grid and its control method based on power pond |
| CN106505615A (en) * | 2016-11-16 | 2017-03-15 | 常州天合光能有限公司 | A kind of electric automobile charging station electric power system based on independent micro-grid |
| CN106487086B (en) * | 2016-11-25 | 2019-03-22 | 国网江苏省电力公司扬州供电公司 | A kind of direct-current micro-grid control method for coordinating of the management of charging and discharging containing electric car |
| CN106487086A (en) * | 2016-11-25 | 2017-03-08 | 国网江苏省电力公司扬州供电公司 | A kind of direct-current micro-grid control method for coordinating containing electric automobile management of charging and discharging |
| CN106788140A (en) * | 2017-01-20 | 2017-05-31 | 合肥聚能新能源科技有限公司 | A kind of modularization common DC bus photovoltaic energy storage system |
| CN106788140B (en) * | 2017-01-20 | 2018-08-28 | 合肥聚能新能源科技有限公司 | A kind of modularization common DC bus photovoltaic energy storage system |
| CN107147148B (en) * | 2017-06-22 | 2020-03-27 | 湖南德沃普电气股份有限公司 | Light storage source and water vapor energy heat pump system based on peak-to-valley electricity price difference and grid-connected control method thereof |
| CN107147148A (en) * | 2017-06-22 | 2017-09-08 | 湖南省德沃普储能有限公司 | A kind of system and its grid-connected control method of the light source of bank savings and steam energy heat pump based on electricity price between peak and valley |
| CN107465229A (en) * | 2017-09-01 | 2017-12-12 | 深圳市高斯宝电气技术有限公司 | A kind of battery charging and discharging system |
| CN107785931B (en) * | 2017-10-16 | 2021-02-05 | 电子科技大学 | Small-size electric energy management and coordinated control integrated device |
| CN107785931A (en) * | 2017-10-16 | 2018-03-09 | 电子科技大学 | A kind of small-sized electric energy management is with coordinating control integrated apparatus |
| CN108039714A (en) * | 2017-11-24 | 2018-05-15 | 国网北京市电力公司 | Energy storage device, the control method based on energy storage device and device |
| CN108539747A (en) * | 2018-05-18 | 2018-09-14 | 广东工业大学 | A kind of grid type alternating current-direct current mixing micro-capacitance sensor control system and method |
| WO2021073049A1 (en) * | 2019-10-18 | 2021-04-22 | 深圳英飞源技术有限公司 | Centralized energy storage charging pile |
| CN112949729A (en) * | 2021-03-11 | 2021-06-11 | 广东技术师范大学 | Control algorithm for micro-grid current conversion |
| CN113794246A (en) * | 2021-09-06 | 2021-12-14 | 国网山东省电力公司枣庄供电公司 | Energy storage control system of distributed energy system |
| CN114221365A (en) * | 2021-12-10 | 2022-03-22 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Electric energy control method based on V2G microgrid system and V2G microgrid system |
| CN115473228A (en) * | 2022-11-14 | 2022-12-13 | 国网上海能源互联网研究院有限公司 | Heterogeneous multi-port alternating current and direct current power electronic networking device |
| CN116154775A (en) * | 2023-04-20 | 2023-05-23 | 中建科技集团有限公司 | AC/DC hybrid micro-grid system based on photovoltaic power supply and control method thereof |
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Effective date of registration: 20200601 Address after: 516006 Phase III Workshop of No. 56 High-tech Zone, Zhongkai District, Huizhou City, Guangdong Province Patentee after: Huizhou meiyiruichuang Electrical Equipment Co., Ltd Address before: No. 6 District 516006 Guangdong province Huizhou Zhongkai hi tech Industrial Development Zone Patentee before: HUIZHOU EPOWER ELECTRONICS Co.,Ltd. |