CN117175551B - Flexible networking control method, system, equipment and storage medium - Google Patents

Flexible networking control method, system, equipment and storage medium Download PDF

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Publication number
CN117175551B
CN117175551B CN202311101033.0A CN202311101033A CN117175551B CN 117175551 B CN117175551 B CN 117175551B CN 202311101033 A CN202311101033 A CN 202311101033A CN 117175551 B CN117175551 B CN 117175551B
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networking
mode
grid
module
power
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CN117175551A (en
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王耀萱
刘海涛
吕广宪
魏琛
孙丽敬
季宇
徐旖旎
洪祎
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China Online Shanghai Energy Internet Research Institute Co ltd
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China Online Shanghai Energy Internet Research Institute Co ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

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Abstract

The invention relates to a flexible networking control method, a system, equipment and a storage medium, wherein the method comprises the following steps: identifying and classifying networking elements of the access networking system to obtain the types of the networking elements, and carrying out switching control on the switch of the access branch according to the types of the networking elements to obtain networking access state information; determining a networking operation mode based on the networking access state information and the types of networking elements; and adjusting a control strategy of the power module according to the networking operation mode. The invention can make the networking device operate flexibly and efficiently.

Description

Flexible networking control method, system, equipment and storage medium
Technical Field
The present invention relates to the field of power distribution network technologies, and in particular, to a method, a system, an apparatus, and a storage medium for flexible networking control.
Background
In recent years, with the development of global economy, the production and consumption of energy are also increasing year by year, and the excessive exploitation and combustion of fossil energy form great pressure on the ecological environment, so that the sustainable development of human society is restricted. Thus, a series of measures are taken in countries around the world, and world energy systems and development patterns are entering a new stage of non-fossil energy dominance. The distributed power supply and the energy storage system are rapidly developed, and a large amount of distributed resources such as energy storage, distributed power supply, alternating current/direct current load and the like appear on the distribution network side.
In order to coordinate and integrate various types of distributed resources and maximize the efficiency of energy utilization, a plurality of distributed power sources, energy storage systems and loads with different types and different characteristics are generally integrated and operated to form a networking device. As disclosed in the prior art, patent publication CN116031911a discloses an energy management method for energy interconnection networking of an off-network optical storage system, the system includes fixed functional components, which cannot meet the requirements of different networking elements in different field application scenes, meet the field requirements, and have a single networking operation mode function, so that the networking mode cannot be flexibly switched according to the field conditions. Also, for example, in the prior art, CN115864487a discloses a distributed new energy source-energy storage ac/dc networking system, which does not have the functions of automatically identifying the type of the access system element and adaptively switching the networking mode under the condition of different access system elements, and has the disadvantages of rapidity and intellectualization.
Disclosure of Invention
The invention aims to provide a flexible networking control method, a system, equipment and a storage medium, which can enable a networking device to operate flexibly and efficiently.
The technical scheme adopted for solving the technical problems is as follows: the flexible networking control method comprises the following steps:
identifying and classifying networking elements of the access networking system to obtain the types of the networking elements, and carrying out switching control on the switch of the access branch according to the types of the networking elements to obtain networking access state information;
determining a networking operation mode based on the networking access state information and the types of networking elements;
and adjusting a control strategy of the power module according to the networking operation mode.
The networking operation mode comprises an alternating current power supply protection mode, an optical storage micro-grid mode, a multi-power supply parallel mode, a direct current power supply mode and a flexible direct connection mode.
The alternating current power supply protection mode comprises a first alternating current power supply protection sub-mode and a second alternating current power supply protection sub-mode; when the networking operation mode is determined based on the networking access state information and the type of the networking element, and when the type of the networking element comprises alternating current load, direct current power supply and energy storage and the networking access state information is grid connection or off-grid, the networking operation mode is a first alternating current power supply protection sub-mode; when the networking element type comprises alternating current load and energy storage, and networking access state information is grid connection or off-grid, the networking operation mode is a second alternating current power supply maintenance sub-mode.
The control strategy for adjusting the power module according to the networking operation mode specifically comprises the following steps:
when the networking operation mode is a first alternating current power supply maintenance sub-mode, operating a DC/DC module in the power module with a power/current control strategy, and operating a DC/AC module in the power module with a VSG/VF/power control strategy;
and when the networking operation mode is a second alternating current power supply maintenance sub-mode, operating the DC/DC module in the power module by a voltage control strategy, and operating the DC/AC module in the power module by a VSG/VF/power control strategy.
The optical storage micro-grid mode comprises a first optical storage micro-grid sub-mode and a second optical storage micro-grid sub-mode; when the networking operation mode is determined based on the networking access state information and the type of the networking element, and when the type of the networking element comprises an alternating current load, a photovoltaic power source, an energy storage power source and a direct current power source, the networking access state information is grid connection or grid disconnection, the networking operation mode is a first optical storage micro-grid sub-mode; when the networking element comprises an alternating current load, a photovoltaic load, an energy storage load and a direct current load, and networking access state information is grid connection or off-grid, the networking operation mode is a second optical storage micro-grid sub-mode.
The control strategy for adjusting the power module according to the networking operation mode specifically comprises the following steps:
when the networking operation mode is a first optical storage micro-grid sub-mode, operating a DC/DC module in the power module by a power/current/voltage control strategy, and operating a DC/AC module in the power module by a VSG/VF/power control strategy;
and when the networking operation mode is a second optical storage micro-grid sub-mode, operating the DC/DC module in the power module with a power/current/voltage control strategy, and operating the DC/AC module in the power module with a VSG/VF/power/voltage control strategy.
The multi-power supply parallel mode comprises a first multi-power supply parallel sub-mode, a second multi-power supply parallel sub-mode, a third multi-power supply parallel sub-mode and a fourth multi-power supply parallel sub-mode; when the networking operation mode is determined based on the networking access state information and the type of the networking element, and when the type of the networking element comprises energy storage and a direct current power supply and the networking access state information is grid connection, the networking operation mode is a first multi-power supply parallel sub-mode; when the networking element type only comprises energy storage and the networking access state information is grid connection, the networking operation mode is a second multi-power supply parallel sub-mode; when the networking element comprises diesel power generation, energy storage and direct current power supply and networking access state information is grid connection, the networking operation mode is a third multi-power supply parallel sub-mode; when the networking element comprises diesel power generation and energy storage and networking access state information is grid connection, the networking operation mode is a fourth multi-power supply parallel sub-mode.
The control strategy for adjusting the power module according to the networking operation mode specifically comprises the following steps:
when the networking operation mode is a first multi-power supply parallel sub-mode, operating a DC/DC module in the power module with a power/current/voltage control strategy, and operating a DC/AC module in the power module with a VSG/power control strategy;
when the networking operation mode is a second multi-power supply parallel sub-mode, operating a DC/DC module in the power module in a voltage control strategy, and operating a DC/AC module in the power module in a VSG/power control strategy;
when the networking operation mode is a third multi-power supply parallel sub-mode, operating a DC/DC module in the power module with a power/current/voltage control strategy, and operating a DC/AC module in the power module with a VSG/power control strategy;
and when the networking operation mode is a fourth multi-power supply parallel sub-mode, operating the DC/DC module in the power module in a voltage control strategy, and operating the DC/AC module in the power module in a VSG/power control strategy.
The direct current power supply mode comprises a first direct current power supply mode and a second direct current power supply sub-mode; when the networking operation mode is determined based on the networking access state information and the type of the networking element, and when the type of the networking element comprises an alternating current load, a photovoltaic power source, an energy storage power source and a direct current power source, the networking operation mode is a first direct current electronic mode; when the networking element comprises photovoltaic, energy storage and direct current load and the networking access state information is off-network, the networking operation mode is a second direct current power supply sub-mode.
The control strategy for adjusting the power module according to the networking operation mode specifically comprises the following steps:
when the networking operation mode is a first direct current electronic mode, operating a DC/DC module in the power module with a current/voltage control strategy, and operating a DC/AC module in the power module with a VSG/VF/power control strategy;
and when the networking operation mode is a second direct current power supply sub-mode, operating the DC/DC module in the power module in a power/current/voltage control strategy, and closing the DC/AC module in the power module.
The flexible-straight interconnection mode comprises a first flexible-straight interconnection sub-mode and a second flexible-straight interconnection sub-mode; when the networking operation mode is determined based on the networking access state information and the type of the networking element, and when the type of the networking element comprises an energy storage system, a photovoltaic system and a networking system and the networking access state information is grid connection or off-grid, the networking operation mode is a first flexible direct interconnection sub-mode; when the networking element type only comprises a networking system and networking access state information is grid connection or off-grid, the networking operation mode is a second flexible direct interconnection sub-mode.
The control strategy for adjusting the power module according to the networking operation mode specifically comprises the following steps:
When the networking operation mode is a first flexible direct-current interconnection sub-mode, operating a DC/DC module in the power module with a power/current control strategy, and operating a DC/AC module in the power module with a VSG/VF/power/voltage control strategy;
and when the networking operation mode is a second flexible direct-current interconnection sub-mode, turning off the DC/DC module in the power module, and operating the DC/AC module in the power module in a VSG/VF/power/voltage control strategy.
The technical scheme adopted by the invention for solving the technical problems is that a flexible networking control system is provided, which comprises:
the networking information acquisition module is used for identifying and classifying networking elements accessed into a networking system to obtain the types of the networking elements, and carrying out switching control on the switch of the access branch according to the types of the networking elements to acquire networking access state information;
the determining module is used for determining a networking operation mode based on the networking access state information and the types of networking elements;
and the adjusting module is used for adjusting the control strategy of the power module according to the networking operation mode.
The technical scheme adopted by the invention for solving the technical problems is that the invention provides electronic equipment which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the steps of the flexible networking control method are realized when the processor executes the computer program.
The technical scheme adopted by the invention for solving the technical problems is to provide a computer readable storage medium which stores a computer program, wherein the computer program realizes the steps of the flexible networking control method when being executed by a processor.
Advantageous effects
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects: the invention can automatically and quickly identify the networking elements accessed to the networking system from the perspective of a user, and can identify the requirements of the user on different networking scenes according to different combinations of different networking elements accessed by the networking system, and adaptively switch to different networking modes, thereby calculating the control strategy of each power module, simplifying the operation steps of the networking device, improving the working efficiency, meeting the requirements of the user on flexibility and rapidity in switching the networking modes under emergency conditions, and leading the networking device to flexibly and efficiently operate.
Drawings
Fig. 1 is a flowchart of a flexible networking control method according to a first embodiment of the present invention;
fig. 2 is a block diagram of a networking control system in a first embodiment of the present invention.
Detailed Description
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents are intended to fall within the scope of the claims appended hereto.
The first embodiment of the invention relates to a flexible networking control method, which can be applied to a networking control system, as shown in fig. 2, wherein the networking control system consists of a monitoring management layer, a system control layer and a module control layer, and adjacent layers perform data interaction in a communication mode. As shown in fig. 1, the flexible networking control method of the present embodiment includes the following steps:
identifying and classifying networking elements of the access networking system to obtain the types of the networking elements, and carrying out switching control on the switch of the access branch according to the types of the networking elements to obtain networking access state information;
determining a networking operation mode based on the networking access state information and the types of networking elements;
and adjusting a control strategy of the power module according to the networking operation mode.
The monitoring management layer is used for identifying and classifying networking elements accessing the networking system to obtain the types of the networking elements, and carrying out switching control on the switch of the access branch according to the types of the networking elements to obtain networking access state information. The monitoring management layer transmits the acquired networking element type and networking access state information to the system control layer.
The identification of the networking elements in the embodiment can be realized through networking interfaces, and due to the difference of interfaces of different networking elements, after the corresponding networking interfaces are connected with the networking elements, the networking interfaces can send out a signal, so that a monitoring management layer obtains the types of the networking elements accessed into a networking system; the networking interfaces of two networking elements are the same, and the identification of the types of the networking elements can be realized through an interface protocol, namely, when the networking interfaces interact with the monitoring management layer after the networking elements are accessed to the networking interfaces, the types of the networking elements can be identified through the types of the networking elements by adding type zone bits in the interface protocol.
The system control layer is used for determining a networking operation mode based on the networking access state information and the types of networking elements, generating an operation instruction of the power module according to the determined networking operation mode after the networking operation mode is determined, and transmitting the operation instruction to the module control layer.
The module control layer adjusts the control strategy of the DC/DC module and the DC/AC module in the power module according to the running instruction issued by the system control layer.
The flexible networking control method of the embodiment can isomerise at least 12 typical operation modes according to different combinations of networking elements of the access networking system and the parallel-to-network state of the networking system, adaptively corresponds to different networking modes, and then determines a corresponding power module control strategy according to the networking modes. The networking modes and power module control strategies corresponding to the 12 typical operation modes are shown in table 1.
TABLE 1 networking mode and power module control strategy corresponding to 12 typical operating modes
As can be seen from table 1, the networking operation modes in the present embodiment include an ac power supply protection mode, an optical storage micro-grid mode, a multi-power parallel mode, a dc power supply mode, and a flexible-direct interconnection mode.
The alternating current power supply protection modes comprise an alternating current power supply protection mode I and an alternating current power supply protection mode II. When the networking element type comprises alternating current load, direct current power supply and energy storage, and networking access state information is grid connection or off-grid, the networking operation mode is alternating current power supply protection mode I; when the networking element type comprises alternating current load and energy storage, and networking access state information is grid connection or off-grid, the networking operation mode is an alternating current power supply protection mode II.
When the networking operation mode is an alternating current power supply protection mode I, the DC/DC module in the power module operates in a power/current control strategy, namely the DC/DC module operates in a power control strategy or a current control strategy, and the DC/AC module in the power module operates in a VSG/VF/power control strategy, namely the DC/AC module operates in a VSG control strategy, a VF control strategy or a power control strategy;
When the networking operation mode is an alternating current power supply protection mode II, the DC/DC module in the power module is operated by a voltage control strategy, and the DC/AC module in the power module is operated by a VSG/VF/power control strategy, namely the DC/AC module is operated by a VSG control strategy, a VF control strategy or a power control strategy.
The optical storage micro-grid mode comprises an optical storage micro-grid mode I and an optical storage micro-grid mode II; when the networking element comprises an alternating current load, a photovoltaic power source, an energy storage power source and a direct current power source, and networking access state information is grid connection or off-grid, the networking operation mode is an optical storage micro-grid mode I; when the networking element types comprise alternating current load, photovoltaic, energy storage and direct current load, and networking access state information is grid connection or off-grid, the networking operation mode is an optical storage micro-grid mode II.
When the networking operation mode is an optical storage micro-grid mode I, the DC/DC module in the power module operates in a power/current/voltage control strategy, namely the DC/DC module operates in a power control strategy, a current control strategy or a voltage control strategy, and the DC/AC module in the power module operates in a VSG/VF/power control strategy, namely the DC/AC module operates in a VSG control strategy, a VF control strategy or a power control strategy;
When the networking operation mode is the micro-grid optical storage mode II, the DC/DC module in the power module operates in a power/current/voltage control strategy, namely the DC/DC module operates in a power control strategy, a current control strategy or a voltage control strategy, and the DC/AC module in the power module operates in a VSG/VF/power/voltage control strategy, namely the DC/AC module operates in a VSG control strategy, a VF control strategy, a power control strategy or a voltage control strategy.
The multi-power supply parallel mode comprises a multi-power supply parallel mode I, a multi-power supply parallel mode II, a multi-power supply parallel mode III and a multi-power supply parallel mode IV; when the networking element comprises an energy storage and a direct current power supply and networking access state information is grid connection, the networking operation mode is a multi-power supply parallel mode I; when the networking element type only comprises energy storage and the networking access state information is grid connection, the networking operation mode is a multi-power supply parallel mode II; when the networking element comprises diesel power generation, energy storage and direct current power supply and networking access state information is grid connection, the networking operation mode is a multi-power supply parallel mode III; when the networking element type comprises diesel power generation and energy storage, and networking access state information is grid connection, the networking operation mode is a multi-power supply parallel mode IV.
When the networking operation mode is a multi-power supply parallel mode I, the DC/DC module in the power module operates in a power/current/voltage control strategy, namely the DC/DC module operates in a power control strategy, a current control strategy or a voltage control strategy, and the DC/AC module in the power module operates in a VSG/power control strategy, namely the DC/AC module operates in a VSG control strategy or a power control strategy;
when the networking operation mode is a multi-power supply parallel mode II, operating a DC/DC module in the power module by a voltage control strategy, and operating a DC/AC module in the power module by a VSG/power control strategy, namely operating the DC/AC module by the VSG control strategy or the power control strategy;
when the networking operation mode is a multi-power supply parallel mode III, the DC/DC module in the power module is operated in a power/current/voltage control strategy, namely the DC/DC module is operated in a power control strategy, a current control strategy or a voltage control strategy, and the DC/AC module in the power module is operated in a VSG/power control strategy, namely the DC/AC module is operated in a VSG control strategy or a power control strategy;
when the networking operation mode is a multi-power supply parallel mode IV, the DC/DC module in the power module operates in a voltage control strategy, and the DC/AC module in the power module operates in a VSG/power control strategy, namely, the DC/AC module operates in a VSG control strategy or a power control strategy.
The direct current power supply mode comprises a direct current power supply mode I and a direct current power supply mode II; when the networking element comprises an alternating current load, a photovoltaic power source, an energy storage source and a direct current power source and networking access state information is off-network, the networking operation mode is a direct current power source mode I; when the networking element comprises photovoltaic, energy storage and direct current load and the networking access state information is off-grid, the networking operation mode is a direct current power supply mode II.
When the networking operation mode is a direct current power supply mode I, the DC/DC module in the power module is operated with a current/voltage control strategy, namely the DC/DC module is operated with a current control strategy or a voltage control strategy, and the DC/AC module in the power module is operated with a VSG/VF/power control strategy, namely the DC/AC module is operated with a VSG control strategy, a VF control strategy or a power control strategy;
when the networking operation mode is the direct current power supply mode II, the DC/DC module in the power module is operated by a power/current/voltage control strategy, namely the DC/DC module is operated by a power control strategy, a current control strategy or a voltage control strategy, and the DC/AC module in the power module is closed.
The flexible-straight interconnection mode comprises a flexible-straight interconnection mode I and a flexible-straight interconnection mode II; when the networking element comprises an energy storage system, a photovoltaic system and a networking system and networking access state information is grid connection or off-grid, the networking operation mode is a flexible direct interconnection mode I; when the networking element type only comprises a networking system and networking access state information is grid connection or off-grid, the networking operation mode is a flexible-direct interconnection mode II.
When the networking operation mode is a flexible direct interconnection mode I, the DC/DC module in the power module is operated in a power/current control strategy, namely the DC/DC module is operated in a power control strategy or a current control strategy, and the DC/AC module in the power module is operated in a VSG/VF/power/voltage control strategy, namely the DC/AC module is operated in a VSG control strategy, a VF control strategy, a power control strategy or a voltage control strategy;
and when the networking operation mode is a flexible direct interconnection mode II, turning off the DC/DC module in the power module, and operating the DC/AC module in the power module in a VSG/VF/power/voltage control strategy, namely operating the DC/AC module in the VSG control strategy, the VF control strategy, the power control strategy or the voltage control strategy.
The 12 typical operation modes can be automatically switched according to the change of the external access networking element types and the change of the system and off-network states. The number of types of access networking elements of the current networking mode is n, and when the types of m networking elements are increased or reduced externally, the network can be automatically switched into the networking modes corresponding to (n+m) or (n-m) networking elements. When m access element types change or the network connection and disconnection states of the system change, but the total number of the element types is unchanged, the network connection mode can be switched to a corresponding networking mode.
It is easy to find that the invention can automatically and quickly identify networking elements accessing to the networking system from the user's perspective, and identify the requirements of users for different networking scenes according to different combinations of different networking elements accessed by the networking system, and adaptively switch to different networking modes, thereby calculating the control strategy of each power module, simplifying the operation steps of the networking device, improving the working efficiency, meeting the requirements of users on flexibility and rapidity in switching the networking modes under emergency conditions, and enabling the networking device to flexibly and efficiently operate.
A second embodiment of the present invention relates to a flexible networking control system, including:
The networking information acquisition module is used for identifying and classifying networking elements accessed into a networking system to obtain the types of the networking elements, and carrying out switching control on the switch of the access branch according to the types of the networking elements to acquire networking access state information;
the determining module is used for determining a networking operation mode based on the networking access state information and the types of networking elements;
and the adjusting module is used for adjusting the control strategy of the power module according to the networking operation mode.
The networking operation mode comprises an alternating current power supply protection mode, an optical storage micro-grid mode, a multi-power supply parallel mode, a direct current power supply mode and a flexible direct connection mode.
The alternating current power supply protection mode comprises a first alternating current power supply protection sub-mode and a second alternating current power supply protection sub-mode; the determining module includes: the first determining unit is used for determining that the networking operation mode is a first alternating current power supply maintenance sub-mode when the types of the networking elements comprise alternating current load, direct current power supply and energy storage and the networking access state information is grid connection or off-grid; and the second determining unit is used for determining that the networking operation mode is a second alternating current power supply maintenance sub-mode when the types of the networking elements comprise alternating current load and energy storage and the networking access state information is grid connection or off-grid.
The adjustment module includes:
the first adjusting unit is used for operating the DC/DC module in the power module with a power/current control strategy and operating the DC/AC module in the power module with a VSG/VF/power control strategy when the networking operation mode is a first alternating current power supply maintenance sub-mode;
and the second adjusting unit is used for operating the DC/DC module in the power module in a voltage control strategy and operating the DC/AC module in the power module in a VSG/VF/power control strategy when the networking operation mode is a second alternating current power supply maintenance sub-mode.
The optical storage micro-grid mode comprises a first optical storage micro-grid sub-mode and a second optical storage micro-grid sub-mode; the determining module includes: the third determining unit is used for determining that the networking operation mode is a first optical storage micro-grid sub-mode when the types of the networking elements comprise alternating current load, photovoltaic, energy storage and direct current power supply and networking access state information is grid connection or off-grid; and the fourth determining unit is used for determining that the networking operation mode is a second optical storage micro-grid sub-mode when the types of the networking elements comprise alternating current load, photovoltaic, energy storage and direct current load and the networking access state information is grid connection or off-grid.
The adjustment module includes:
the third adjusting unit is used for operating the DC/DC module in the power module with a power/current/voltage control strategy and operating the DC/AC module in the power module with a VSG/VF/power control strategy when the networking operation mode is a first optical storage micro-grid sub-mode;
and the fourth adjusting unit is used for operating the DC/DC module in the power module with a power/current/voltage control strategy and operating the DC/AC module in the power module with a VSG/VF/power/voltage control strategy when the networking operation mode is the second optical storage micro-grid sub-mode.
The multi-power supply parallel mode comprises a first multi-power supply parallel sub-mode, a second multi-power supply parallel sub-mode, a third multi-power supply parallel sub-mode and a fourth multi-power supply parallel sub-mode; the determining module includes: a fifth determining unit, configured to determine, when the type of the networking element includes an energy storage and a dc power supply, and the networking access state information is a grid connection, that the networking operation mode is a first multi-power supply parallel sub-mode; a sixth determining unit, configured to determine, when the type of the networking element includes only energy storage and the networking access state information is grid-connected, that the networking operation mode is a second multi-power-supply parallel sub-mode; a seventh determining unit, configured to determine, when the type of the networking element includes diesel power generation, energy storage, and dc power, and the networking access state information is grid-connected, that the networking operation mode is a third multi-power parallel sub-mode; and the eighth determining unit is used for determining that the networking operation mode is a fourth multi-power supply parallel sub-mode when the types of the networking elements comprise diesel power generation and energy storage and the networking access state information is grid connection.
The adjustment module includes:
a fifth adjusting unit, configured to operate the DC/DC module in the power module with a power/current/voltage control policy and operate the DC/AC module in the power module with a VSG/power control policy when the networking operation mode is a first multi-power parallel sub-mode;
a sixth adjustment unit, configured to operate the DC/DC module in the power module with a voltage control policy and operate the DC/AC module in the power module with a VSG/power control policy when the networking operation mode is the second multi-power parallel sub-mode;
a seventh adjustment unit, configured to operate the DC/DC module in the power module with a power/current/voltage control policy and operate the DC/AC module in the power module with a VSG/power control policy when the networking operation mode is a third multi-power parallel sub-mode;
and the eighth adjusting unit is used for operating the DC/DC module in the power module in a voltage control strategy when the networking operation mode is a fourth multi-power supply parallel sub-mode, and operating the DC/AC module in the power module in a VSG/power control strategy.
The direct current power supply mode comprises a first direct current power supply mode and a second direct current power supply sub-mode; the determining module includes: a ninth determining unit, configured to determine, when the type of the networking element includes an ac load, a photovoltaic, an energy storage, and a dc power supply, and the networking access state information is off-network, that the networking operation mode is a first dc electronic mode; and the tenth determining unit is used for determining that the networking operation mode is a second direct current power supply sub-mode when the types of the networking elements comprise photovoltaic, energy storage and direct current loads and the networking access state information is off-network.
The adjustment module includes:
a ninth adjustment unit, configured to operate the DC/DC module in the power module with a current/voltage control policy and operate the DC/AC module in the power module with a VSG/VF/power control policy when the networking operation mode is the first direct current electronic mode;
and a tenth adjusting unit, configured to operate the DC/DC module in the power module with a power/current/voltage control strategy when the networking operation mode is the second DC power sub-mode, and turn off the DC/AC module in the power module.
The flexible-straight interconnection mode comprises a first flexible-straight interconnection sub-mode and a second flexible-straight interconnection sub-mode; the determining module includes: the eleventh determining unit is configured to determine, when the type of the networking element includes an energy storage system, a photovoltaic system, and a networking system, and the networking access state information is grid-connected or off-grid, that the networking operation mode is a first flexible-direct interconnection sub-mode; and the twelfth determining unit is used for determining that the networking operation mode is a second flexible-straight interconnection sub-mode when the type of the networking element only comprises a networking system and the networking access state information is grid connection or off-grid.
The adjustment module includes:
An eleventh adjustment unit, configured to operate the DC/DC module in the power module with a power/current control policy and operate the DC/AC module in the power module with a VSG/VF/power/voltage control policy when the networking operation mode is the first flexible-direct-interconnection sub-mode;
and the twelfth adjustment unit is used for closing the DC/DC module in the power module when the networking operation mode is the second flexible direct-current interconnection sub-mode, and operating the DC/AC module in the power module in a VSG/VF/power/voltage control strategy.
A third embodiment of the invention relates to an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the flexible networking control method of the first embodiment when executing the computer program.
A fourth embodiment of the present invention relates to a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the flexible networking control method of the first embodiment.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the invention can be realized by adopting various computer languages, such as object-oriented programming language Java, an transliteration script language JavaScript and the like.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (14)

1. The flexible networking control method is characterized by comprising the following steps of:
Identifying and classifying networking elements of the access networking system to obtain the types of the networking elements, and carrying out switching control on the switch of the access branch according to the types of the networking elements to obtain networking access state information; the networking elements comprise alternating current load, direct current power supply, energy storage, photovoltaic, direct current load, diesel power generation and networking system; the networking access state information comprises grid connection and off-grid;
determining a networking operation mode based on the networking access state information and the types of networking elements, wherein the networking operation mode comprises an alternating current power supply protection mode, an optical storage micro-grid mode, a multi-power supply parallel mode, a direct current power supply mode and a flexible direct current interconnection mode; the method comprises the following steps:
when the networking element type comprises alternating current load, direct current power supply and energy storage, and networking access state information is grid-connected or off-grid, or when the networking element type comprises alternating current load and energy storage, and networking access state information is grid-connected or off-grid, the networking operation mode is an alternating current power supply protection mode;
when the networking element type comprises an alternating current load, a photovoltaic, an energy storage and a direct current power supply, and networking access state information is a grid-connected or off-grid mode, or when the networking element type comprises an alternating current load, a photovoltaic, an energy storage and a direct current load, and networking access state information is a grid-connected or off-grid mode, the networking operation mode is an optical storage micro-grid mode;
When the type of the networking element comprises energy storage and direct current power supply and the networking access state information is grid-connected, or when the type of the networking element only comprises energy storage and the networking access state information is grid-connected, or when the type of the networking element comprises diesel power generation, energy storage and direct current power supply and the networking access state information is grid-connected, or when the type of the networking element comprises diesel power generation and energy storage and the networking access state information is grid-connected, the networking operation mode is a multi-power parallel mode;
when the networking element type comprises alternating current load, photovoltaic, energy storage and direct current power supply and networking access state information is off-grid, or when the networking element type comprises photovoltaic, energy storage and direct current load and networking access state information is off-grid, the networking operation mode is a direct current power supply mode;
when the networking element type comprises an energy storage system, a photovoltaic system and a networking system, and networking access state information is grid-connected or off-grid, or when the networking element type only comprises a networking system, and networking access state information is grid-connected or off-grid, the networking operation mode is a flexible and straight interconnection mode;
And adjusting a control strategy of the power module according to the networking operation mode.
2. The flexible networking control method of claim 1, wherein the ac power conservation mode comprises a first ac power conservation sub-mode and a second ac power conservation sub-mode;
when the networking element type comprises alternating current load, direct current power supply and energy storage, and networking access state information is grid connection or off-grid, the networking operation mode is a first alternating current power supply protection sub-mode;
when the networking element type comprises alternating current load and energy storage, and networking access state information is grid connection or off-grid, the networking operation mode is a second alternating current power supply maintenance sub-mode.
3. The flexible networking control method according to claim 2, wherein the adjusting the control strategy of the power module according to the networking operation mode specifically comprises:
when the networking operation mode is a first alternating current power supply maintenance sub-mode, operating a DC/DC module in the power module with a power/current control strategy, and operating a DC/AC module in the power module with a VSG/VF/power control strategy;
and when the networking operation mode is a second alternating current power supply maintenance sub-mode, operating the DC/DC module in the power module by a voltage control strategy, and operating the DC/AC module in the power module by a VSG/VF/power control strategy.
4. The flexible networking control method of claim 1, wherein the optical storage micro-grid mode comprises a first optical storage micro-grid sub-mode and a second optical storage micro-grid sub-mode;
when the networking element comprises an alternating current load, a photovoltaic power source, an energy storage power source and a direct current power source and networking access state information is grid connection or off-grid, the networking operation mode is a first optical storage micro-grid sub-mode;
when the networking element comprises an alternating current load, a photovoltaic load, an energy storage load and a direct current load, and networking access state information is grid connection or off-grid, the networking operation mode is a second optical storage micro-grid sub-mode.
5. The flexible networking control method according to claim 4, wherein the adjusting the control strategy of the power module according to the networking operation mode specifically comprises:
when the networking operation mode is a first optical storage micro-grid sub-mode, operating a DC/DC module in the power module by a power/current/voltage control strategy, and operating a DC/AC module in the power module by a VSG/VF/power control strategy;
and when the networking operation mode is a second optical storage micro-grid sub-mode, operating the DC/DC module in the power module with a power/current/voltage control strategy, and operating the DC/AC module in the power module with a VSG/VF/power/voltage control strategy.
6. The flexible networking control method of claim 1, wherein the multi-power supply parallel mode comprises a first multi-power supply parallel sub-mode, a second multi-power supply parallel sub-mode, a third multi-power supply parallel sub-mode, and a fourth multi-power supply parallel sub-mode;
when the networking element comprises an energy storage power supply and a direct current power supply and networking access state information is grid connection, the networking operation mode is a first multi-power supply parallel sub-mode;
when the networking element type only comprises energy storage and the networking access state information is grid connection, the networking operation mode is a second multi-power supply parallel sub-mode;
when the networking element comprises diesel power generation, energy storage and direct current power supply and networking access state information is grid connection, the networking operation mode is a third multi-power supply parallel sub-mode;
when the networking element comprises diesel power generation and energy storage and networking access state information is grid connection, the networking operation mode is a fourth multi-power supply parallel sub-mode.
7. The flexible networking control method according to claim 6, wherein the adjusting the control strategy of the power module according to the networking operation mode specifically comprises:
When the networking operation mode is a first multi-power supply parallel sub-mode, operating a DC/DC module in the power module with a power/current/voltage control strategy, and operating a DC/AC module in the power module with a VSG/power control strategy;
when the networking operation mode is a second multi-power supply parallel sub-mode, operating a DC/DC module in the power module in a voltage control strategy, and operating a DC/AC module in the power module in a VSG/power control strategy;
when the networking operation mode is a third multi-power supply parallel sub-mode, operating a DC/DC module in the power module with a power/current/voltage control strategy, and operating a DC/AC module in the power module with a VSG/power control strategy;
and when the networking operation mode is a fourth multi-power supply parallel sub-mode, operating the DC/DC module in the power module in a voltage control strategy, and operating the DC/AC module in the power module in a VSG/power control strategy.
8. The flexible networking control method of claim 1, wherein the dc power supply modes include a first dc power supply sub-mode and a second dc power supply sub-mode;
when the networking element type comprises alternating current load, photovoltaic, energy storage and direct current power supply, and networking access state information is off-grid, the networking operation mode is a first direct current electronic mode;
When the networking element comprises photovoltaic, energy storage and direct current load and the networking access state information is off-network, the networking operation mode is a second direct current power supply sub-mode.
9. The flexible networking control method according to claim 8, wherein the adjusting the control strategy of the power module according to the networking operation mode specifically comprises:
when the networking operation mode is a first direct current electronic mode, operating a DC/DC module in the power module with a current/voltage control strategy, and operating a DC/AC module in the power module with a VSG/VF/power control strategy;
and when the networking operation mode is a second direct current power supply sub-mode, operating the DC/DC module in the power module in a power/current/voltage control strategy, and closing the DC/AC module in the power module.
10. The flexible networking control method of claim 1, wherein the flexible-to-straight interconnection mode comprises a first flexible-to-straight interconnection sub-mode and a second flexible-to-straight interconnection sub-mode;
when the networking element comprises an energy storage system, a photovoltaic system and a networking system and networking access state information is grid connection or off-grid, the networking operation mode is a first flexible-direct interconnection sub-mode;
When the networking element type only comprises a networking system and networking access state information is grid connection or off-grid, the networking operation mode is a second flexible direct interconnection sub-mode.
11. The flexible networking control method according to claim 10, wherein the adjusting the control strategy of the power module according to the networking operation mode specifically comprises:
when the networking operation mode is a first flexible direct-current interconnection sub-mode, operating a DC/DC module in the power module with a power/current control strategy, and operating a DC/AC module in the power module with a VSG/VF/power/voltage control strategy;
and when the networking operation mode is a second flexible direct-current interconnection sub-mode, turning off the DC/DC module in the power module, and operating the DC/AC module in the power module in a VSG/VF/power/voltage control strategy.
12. A flexible networking control system, comprising:
the networking information acquisition module is used for identifying and classifying networking elements accessed into a networking system to obtain the types of the networking elements, and carrying out switching control on the switch of the access branch according to the types of the networking elements to acquire networking access state information; the networking elements comprise alternating current load, direct current power supply, energy storage, photovoltaic, direct current load, diesel power generation and networking system; the networking access state information comprises grid connection and off-grid;
The determining module is used for determining a networking operation mode based on the networking access state information and the types of networking elements; the networking operation mode comprises an alternating current power supply protection mode, an optical storage micro-grid mode, a multi-power supply parallel mode, a direct current power supply mode and a flexible direct interconnection mode; the method comprises the following steps:
when the networking element type comprises alternating current load, direct current power supply and energy storage, and networking access state information is grid-connected or off-grid, or when the networking element type comprises alternating current load and energy storage, and networking access state information is grid-connected or off-grid, the networking operation mode is an alternating current power supply protection mode;
when the networking element type comprises an alternating current load, a photovoltaic, an energy storage and a direct current power supply, and networking access state information is a grid-connected or off-grid mode, or when the networking element type comprises an alternating current load, a photovoltaic, an energy storage and a direct current load, and networking access state information is a grid-connected or off-grid mode, the networking operation mode is an optical storage micro-grid mode;
when the type of the networking element comprises energy storage and direct current power supply and the networking access state information is grid-connected, or when the type of the networking element only comprises energy storage and the networking access state information is grid-connected, or when the type of the networking element comprises diesel power generation, energy storage and direct current power supply and the networking access state information is grid-connected, or when the type of the networking element comprises diesel power generation and energy storage and the networking access state information is grid-connected, the networking operation mode is a multi-power parallel mode;
When the networking element type comprises alternating current load, photovoltaic, energy storage and direct current power supply and networking access state information is off-grid, or when the networking element type comprises photovoltaic, energy storage and direct current load and networking access state information is off-grid, the networking operation mode is a direct current power supply mode;
when the networking element type comprises an energy storage system, a photovoltaic system and a networking system, and networking access state information is grid-connected or off-grid, or when the networking element type only comprises a networking system, and networking access state information is grid-connected or off-grid, the networking operation mode is a flexible and straight interconnection mode;
and the adjusting module is used for adjusting the control strategy of the power module according to the networking operation mode.
13. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the flexible networking control method according to any one of claims 1-11 when the computer program is executed.
14. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the flexible networking control method according to any one of claims 1-11.
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