CN114449374B - High-density distributed power supply communication method, device and medium - Google Patents
High-density distributed power supply communication method, device and medium Download PDFInfo
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Abstract
The utility model discloses a high density distributed power supply communication method, through gathering the local latest state information of current control moment, local last trigger moment state information and the neighbor power supply latest state information of neighbor power supply, judge whether current control moment satisfies the triggering condition through calculating the difference of local latest state information and last trigger moment state information and the unbalance of last trigger moment state information and neighbor power supply latest state information, if satisfy, send local latest state information to neighbor power supply, through the method that this application provided, only carry out information transfer when satisfying the triggering condition, the problem of the wasting of resources that the information transfer still carried out when the local state quantity of adjacent control moment did not take place very big change has been solved. In addition, the application also provides a device and a medium, which correspond to the high-density distributed power supply communication method and have the same effects.
Description
Technical Field
The present disclosure relates to the field of power grid communications, and in particular, to a method, an apparatus, and a medium for high-density distributed power source communications.
Background
With the progressive exhaustion of terrestrial resources and the attention of people to environmental problems, the application of renewable energy sources is increasingly paid attention to all countries in the world, and the large-scale access of distributed power sources to power distribution networks has become a current development trend. However, considering that the output of new energy sources such as photovoltaic power and wind power has randomness and fluctuation, the access of the high-density distributed power supply brings challenges to the safe and stable operation of the power distribution network. How to maintain stable system voltage frequency and high-reliability power supply, realize flexible and high-efficiency multi-source coordination control, further improve the renewable energy source digestion capability, and is a focus of attention of a novel power distribution network accessed by a high-density distributed power supply. Droop control strategies have gained widespread attention because automatic distribution of load power among micro-sources can be achieved without requiring dominant distributed power sources and interconnections. However, since droop control is proportional differential control, steady-state deviation of voltage is caused, and reactive power distribution effect is not ideal, cooperative control is needed to assist voltage recovery and reactive power sharing, and distributed control based on consistency theory is an effective way for realizing system cooperation. In practical engineering implementations, communication between neighboring distributed power sources is typically performed in a discrete fashion over a sparse network. Conventional distributed communication is triggered on a time basis, i.e. information transmission is performed at regular intervals.
The information transmission is performed at fixed intervals, and when the local state quantity does not change greatly at adjacent communication moments, the current state is still transmitted each time, and in fact, no communication operation is needed at this time, so that the communication in the time triggering mode causes resource waste and increases communication pressure.
Therefore, how to solve the problem of communication resource waste caused by time triggering is a technical problem to be solved urgently by the person skilled in the art.
Disclosure of Invention
The application aims to provide a high-density distributed power supply communication method, a device and a medium.
In order to solve the above technical problems, the present application provides a high-density distributed power communication method, including:
collecting local latest state information of a current power supply at a current control moment, state information of the current power supply at the last trigger moment and latest state information of neighbor power supplies;
determining a difference value between the local latest state information and the last trigger time state information, and determining an unbalance amount between the last trigger time state information and the latest state information of the neighbor power supply;
judging whether a triggering condition is met or not according to the difference value and the unbalance amount;
if yes, the local latest state information is sent to the neighbor power supply, and the current control time is recorded as a trigger time.
Preferably, in the high-density distributed power supply communication method, the local latest state information is a local latest voltage observed value;
correspondingly, the state information of the last trigger time is the voltage observed value of the last trigger time, and the latest state information of the neighbor power supply is the latest voltage observed value of the neighbor power supply.
Preferably, in the high-density distributed power supply communication method, the determining an unbalance amount between the last trigger time state information and the latest state information of the neighbor power supply includes:
determining a sequence number of the last trigger time according to the first formula;
acquiring the voltage observation value of the last trigger time corresponding to the sequence number;
determining the unbalance amount of the voltage observed value at the last trigger moment and the latest voltage observed value of the neighbor power supply according to a second formula;
wherein, the first formula is:
i represents the current power supply, k represents the current control timeA sequence number, m representing a variable, m (k) representing the sequence number of the last trigger time of the current power supply;
representing the trigger time of the current power supply;
the second formula is:
j represents the neighbor power supply, N i Representing the number of said neighbor power supplies representing said current power supply, a ij Representing the communication weight between the current power supply and the neighbor power supply, V representing the voltage,
-said last trigger moment representing said current power supply,>
-a voltage observation of said last trigger time representing said last trigger time of said current power supply, ->
A latest voltage observation value of the neighbor power supply, u, representing the last trigger time of the neighbor power supply Vi (k) And the unbalance amount of the last trigger time voltage observed value and the latest voltage observed value of the neighbor power supply is represented.
Preferably, in the high-density distributed power supply communication method, the determining whether the triggering condition is satisfied according to the difference value and the unbalance amount includes:
the preset trigger parameters are obtained and the preset trigger parameters are obtained,
judging whether a triggering condition is met or not according to a third formula combining the preset triggering parameter, the difference value and the unbalance;
wherein the third formula is: i e Vi (k)|≥ε|u Vi (k)|，
Epsilon is the preset trigger parameter, e Vi (k) And the difference value between the local latest voltage observed value and the voltage observed value at the last trigger moment is obtained.
Preferably, in the high-density distributed power supply communication method, the local latest state information is a local latest reactive state quantity;
correspondingly, the state information at the last trigger time is the reactive state quantity at the last trigger time, and the latest state information of the neighbor power supply is the latest reactive state quantity of the neighbor power supply.
Preferably, in the high-density distributed power supply communication method, the determining an unbalance amount between the last trigger time state information and the latest state information of the neighbor power supply includes:
determining a sequence number of the last trigger time according to a fourth formula;
acquiring the reactive state quantity of the last trigger moment corresponding to the sequence number;
determining the unbalance amount of the reactive state quantity at the last triggering moment and the latest reactive state quantity of the neighbor power supply according to a fifth formula;
wherein the fourth formula is:
i represents the current power supply, k represents the sequence number of the current control moment, m represents a variable, and m (k) represents the sequence number of the last trigger moment of the current power supply;
representing the trigger time of the current power supply;
the fifth formula is:
j represents a siteThe neighbor power supply N i Representing the number of said neighbor power supplies of said current power supply, a ij Representing the communication weight between the current power supply and the neighbor power supply, n representing the reactive power droop coefficient,
-said last trigger moment representing said current power supply,>
representing the reactive state quantity of the current power supply at the last trigger time,
representing the latest reactive state quantity of the neighbor power supply, u Qi (k) And the unbalance amount of the reactive state quantity at the last triggering moment and the latest reactive state quantity of the neighbor power supply is represented.
Preferably, in the high-density distributed power supply communication method, the determining whether the triggering condition is satisfied according to the difference value and the unbalance amount includes:
the preset trigger parameters are obtained and the preset trigger parameters are obtained,
judging whether a triggering condition is met or not according to the preset triggering parameter, the difference value and the unbalance amount in combination with a sixth formula;
wherein the sixth formula is: i e Qi (k)|≥ε|u Qi (k)|，
Epsilon is the preset trigger parameter, e Qi (k) And the difference value between the local latest reactive state quantity and the reactive state quantity at the last trigger moment is obtained.
In order to solve the above technical problem, the present application further provides a high-density distributed power communication device, including:
the acquisition module is used for acquiring the local latest state information of the current power supply at the current control moment, the last trigger moment state information of the current power supply and the latest state information of the neighbor power supply;
the determining module is used for determining the difference value between the local latest state information and the last triggering moment state information and determining the unbalance amount between the last triggering moment state information and the latest state information of the neighbor power supply;
the judging module is used for judging whether the triggering condition is met or not according to the difference value and the unbalance quantity; if yes, triggering a sending module;
the sending module is configured to send the local latest status information to the neighbor power supply, and record the current control time as a trigger time.
In order to solve the above technical problem, the present application further provides a high-density distributed power communication device, including:
a memory for storing a computer program;
and a processor for implementing the steps of the high density distributed power supply communication method when executing the computer program.
To solve the above technical problem, the present application further provides a computer readable storage medium, where a computer program is stored, where the computer program implements the steps of the high-density distributed power communication method when executed by a processor.
According to the high-density distributed power supply communication method, local latest state information at the current control moment, local last trigger moment state information and neighbor power supply latest state information of a neighbor power supply are collected, whether the current control moment meets the trigger condition or not is judged by calculating the difference value of the local latest state information and the last trigger moment state information and the unbalance quantity of the last trigger moment state information and the neighbor power supply latest state information, if yes, the local latest state information is sent to the neighbor power supply, and information transmission is carried out only when the trigger condition is met by the method provided by the application, so that the problem of resource waste caused by information transmission is still solved when the local state quantity at the adjacent control moment does not change greatly.
In addition, the application also provides a device and a medium, which correspond to the high-density distributed power supply communication method and have the same effects.
Drawings
For a clearer description of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for high density distributed power communications according to an embodiment of the present application;
fig. 2 is a schematic diagram of an implementation scenario of a high-density distributed power communication method according to an embodiment of the present application;
FIG. 3 is a block diagram of a high density distributed power communication device according to an embodiment of the present application;
fig. 4 is a block diagram of another high-density distributed power communication device according to an embodiment of the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments herein without making any inventive effort are intended to fall within the scope of the present application.
The core of the application is to provide a high-density distributed power supply communication method, a device and a medium for solving the problem of communication resource waste caused by time triggering.
In order to provide a better understanding of the present application, those skilled in the art will now make further details of the present application with reference to the drawings and detailed description.
Fig. 1 is a flowchart of a high-density distributed power communication method according to an embodiment of the present application, where, as shown in fig. 1, the high-density distributed power communication method includes:
s11: collecting local latest state information of a current power supply at a current control moment, last trigger moment state information of the current power supply and neighbor power supply latest state information of a neighbor power supply;
s12: determining a difference value between the local latest state information and the last trigger time state information, and determining an unbalance amount between the last trigger time state information and the latest state information of the neighbor power supply;
s13: judging whether the triggering condition is met or not according to the difference value and the unbalance quantity;
s14: if yes, the local latest state information is sent to the neighbor power supply, and the current control moment is recorded as the trigger moment.
The current control time refers to that the current power supply collects state information according to a preset time interval, and the time of each collection of the state information is recorded as the control time. The neighbor power supplies mentioned in this embodiment refer to power supplies adjacent to the current power supply, the number of the neighbor power supplies is not limited in this embodiment, and one or a plurality of neighbor power supplies may be used, and state information is mutually sent between the neighbor power supplies, so as to realize information transfer between the power supplies, and a high-density distributed power supply cooperative control strategy of the power distribution network is established based on received information data.
The triggering time mentioned in this embodiment refers to that the state information of the current power supply reaches a triggering condition, the neighbor power supply of the current power supply box sends the local latest state information, and the control time at this time is recorded as the triggering time, because when the local state information does not change greatly at the adjacent control time, it is unnecessary to execute communication operation, in this embodiment, whether the communication operation is needed is determined by judging whether the triggering condition is met according to the difference value and the unbalance amount, and whether the communication operation is needed is judged by judging whether the change state of the current power supply at the current control time is needed by the triggering condition. Thus, not every control instant is a trigger instant. The triggering conditions are not particularly limited, and the triggering conditions are designed according to actual situations.
The local latest state information mentioned in this embodiment refers to the state information of the current power supply at the current control moment, and this embodiment does not limit what type of data the state information specifically refers to, and is designed according to actual needs. In addition, the last trigger time state information mentioned in this embodiment means that the state information of the current power supply reaches a trigger condition, and the trigger time closest to the current control time is recorded as the last trigger time, the local state information sent by the last trigger time to the neighbor power supply is the last trigger time state information, and the last trigger time does not necessarily correspond to the last control time. The neighbor power supply latest state information mentioned in this embodiment means that, after the neighbor power supply reaches a trigger condition, the trigger time closest to the current control time sends the neighbor power supply state information to the current power supply as the neighbor power supply latest state information.
Fig. 2 is a schematic diagram of an implementation scenario of a high-density distributed power communication method according to the present embodiment, and fig. 2 is only an implementation scenario of the present embodiment, where the implementation scenario of the high-density distributed power communication method according to the present embodiment is not limited to this scenario. As shown in fig. 2, a power supply including 5 distributed power sources DG1, DG2, DG3, DG4 and DG5, DG1, DG2 and DG3 are connected to a voltage bus V through respective impedances R1, L1, R2, L2 and R3, L3, respectively b1 DG4 and DG5 are connected to the voltage bus V via respective impedances R4, L5 and R5, L5, respectively b2 Voltage bus V b1 And voltage busbar V b2 The power source is connected with the inductor L through the resistor R and is connected to the upper power grid W1 through the transformer T1 and the breaker S1, if the power source DG1 is taken as a current power source, the neighbor power source of the power source DG1 is taken as a DG2, and if the power source DG2 is taken as a current power source, the neighbor power sources of the power source DG2 are taken as DG1 and DG3.
Specifically, when the current power supply reaches a preset control moment, collecting local latest state information, last trigger moment state information of the current power supply and neighbor power supply latest state information of the neighbor power supply, determining a difference value between the local latest state information and the last trigger moment state information and unbalance amount of the last trigger moment state information and the neighbor power supply latest state information, judging whether a trigger condition is met according to the difference value and the unbalance amount, if the trigger condition is met, sending the local latest state information to the neighbor power supply, recording the current control moment as the trigger moment, and if the trigger condition is not met, not sending the local state information to the neighbor power supply, wherein the neighbor power supply keeps the state information acquired at the last trigger moment.
By the high-density distributed power supply communication method, whether the state information at the moment reaches the triggering condition is judged, and information transmission is performed only when the triggering condition is met, so that the problem of resource waste caused by information transmission still is solved when the local state quantity at the adjacent control moment does not change greatly.
According to the above embodiment, the present embodiment provides a preferred solution, where the local latest state information is a local latest voltage observed value;
correspondingly, the state information of the last trigger time is the voltage observed value of the last trigger time, and the latest state information of the neighbor power supply is the latest voltage observed value of the neighbor power supply.
The quality of the voltage is one of the most focused indicators of the operation of the power distribution network, and the embodiment does not limit the specific mode of acquiring the voltage observation value and is designed according to the actual situation. Correspondingly, when the state information of the last trigger time is the voltage observation value of the current power supply at the last trigger time, the voltage observation value is recorded as the voltage observation value of the last trigger time, the latest state information of the neighbor power supply is the latest voltage observation value of the neighbor power supply, among the voltage observation values sent by the neighbor power supply to the current power supply at the trigger time, the voltage observation value nearest to the current control time is recorded as the latest voltage observation value of the neighbor power supply. The number of the neighbor power supplies is not limited, and the neighbor power supplies are designed according to actual needs.
Preferably, when the local latest state information is a local latest voltage observed value, determining an unbalance amount between the last trigger time state information and the latest state information of the neighbor power supply includes:
determining a sequence number of the last trigger time according to the first formula;
acquiring a voltage observation value of the last trigger time corresponding to the sequence number;
determining the unbalance amount of the voltage observed value at the last trigger moment and the latest voltage observed value of the neighbor power supply according to a second formula;
wherein, the first formula is:
i represents the current power supply, k represents the serial number of the current control moment, m represents a variable, and m (k) represents the serial number of the last trigger moment of the current power supply;
indicating the triggering time of the current power supply;
the second formula is:
j represents a neighbor power supply, N i Representing the number of neighbor power supplies representing the current power supply, a ij Representing the communication weight between the current power supply and the neighbor power supply, V represents the voltage,
indicating the last trigger moment of the current power supply, +.>
Voltage observation value of last trigger time representing last trigger time of current power supply, +.>
A neighbor power supply latest voltage observation value indicating the last trigger time of a neighbor power supply, u Vi (k) And the unbalance amount between the voltage observed value at the last trigger time and the latest voltage observed value of the neighbor power supply is represented.
In this embodiment, i represents a current power supply, k represents a sequence number of a current control time, k is a positive integer greater than 0, a control time is reached every preset time, and when state information of the control time satisfies a trigger condition, the current control time is recorded as a trigger time. m (k) represents the sequence number of the last trigger time of the current power supply;
representing the triggering moment of the current power supply, the first formulation is such that +.>
The value of m is taken to be less than the maximum value of k, and m (k) is equal to this maximum value. The sequence number m (k) of the last trigger time closest to the current control time k is obtained through a first formula, and the last trigger time +.>
Determining the voltage observation value of the last trigger time +.>
Similarly, the latest voltage observation value of the neighbor power supply is +.>
Then determining the voltage observation value of the last trigger time according to a second formula>
Up-to-date voltage observation value with neighbor power supply>
Unbalance amount u of (2) Vi (k)。
In addition, according to the difference value between the local latest voltage observation value and the last trigger time voltage observation value and the unbalance amount between the last trigger time voltage observation value and the latest voltage observation value of the neighbor power supply, whether the trigger condition is met is judged, and the embodiment provides a preferable scheme, and according to the difference value and the unbalance amount, whether the trigger condition is met is judged, including:
the preset trigger parameters are obtained and the preset trigger parameters are obtained,
judging whether the triggering condition is met or not according to a third formula combining the preset triggering parameter, the difference value and the unbalance amount;
wherein, the third formula is: i e Vi (k)|≥ε|u Vi (k)|，
Epsilon is a preset trigger parameter, e Vi (k) The difference value between the local latest voltage observed value and the voltage observed value at the last trigger time is obtained.
The preset trigger parameter epsilon mentioned in the embodiment is a parameter preset according to actual design requirements, and the embodiment is not limited to a specific value of the preset trigger parameter epsilon and can be set according to actual conditions. Specifically, when the preset triggering parameter, the difference value and the unbalance amount meet a third formula, the current power supply sends the local latest voltage observed value to the neighbor power supply, the current control is recorded as the triggering moment, and if the preset triggering parameter, the difference value and the unbalance amount do not meet the third formula, the voltage observed value obtained by the neighbor power supply still keeps the voltage observed value at the last triggering moment.
By the high-density distributed power supply communication method provided by the embodiment of the application, whether the voltage observation value reaches the triggering condition is judged, and the information of the voltage observation value is transmitted only when the triggering condition is met, so that the problem of resource waste caused by information transmission still is solved when the local voltage observation value does not change greatly at the adjacent control moment.
According to the above embodiment, the present embodiment provides a preferred solution, where the local latest state information is a local latest reactive state quantity;
correspondingly, the state information at the last trigger time is the reactive state quantity at the last trigger time, and the latest state information of the neighbor power supply is the latest reactive state quantity of the neighbor power supply.
The reactive state quantity is one of indexes of reasonable reactive compensation capacity of the power distribution network, reasonable reactive compensation capacity allocation and effective voltage reactive control measures can ensure the voltage quality of the high-voltage power distribution network, improve the safety and stability of power grid operation, reduce the power loss of the power grid, improve the power transmission capacity of equipment and fully exert the operation economic benefit of the high-voltage power distribution network. The embodiment does not limit the specific mode for acquiring the reactive state quantity, and the reactive state quantity is designed according to actual conditions. Correspondingly, the state information of the last trigger time is the reactive state quantity of the current power supply at the last trigger time, the reactive state quantity of the last trigger time is recorded, the latest state information of the neighbor power supply is the latest reactive state quantity of the neighbor power supply, among the reactive state quantities transmitted to the current power supply by the neighbor power supply at the trigger time, the reactive state quantity nearest to the current control time is recorded. The number of the neighbor power supplies is not limited, and the neighbor power supplies are designed according to actual needs.
Preferably, when the local latest state information is a local latest reactive state quantity, determining an unbalance amount between the last trigger time state information and the latest state information of the neighbor power supply includes:
determining a sequence number of the last trigger time according to a fourth formula;
acquiring the reactive state quantity of the last trigger moment corresponding to the sequence number;
determining the unbalance amount of the reactive state quantity at the last triggering moment and the latest reactive state quantity of the neighbor power supply according to a fifth formula;
wherein the fourth formula is:
i represents the current power supply, k represents the serial number of the current control moment, m represents a variable, and m (k) represents the serial number of the last trigger moment of the current power supply;
indicating the triggering time of the current power supply;
the fifth formula is:
j represents a neighbor power supply, N i Representing the number of neighbor power supplies of the current power supply, a ij Representing the communication weight between the current power supply and the neighbor power supply, n represents the reactive power droop factor,
representing the current power supplyLast trigger time,/->
Indicating the reactive state quantity of the current power supply at the last trigger time,/->
Representing the latest reactive state quantity of the neighbor power supply, u Qi (k) And the unbalance amount of the reactive state quantity at the last trigger time and the latest reactive state quantity of the neighbor power supply is represented.
In this embodiment, i represents a current power supply, k represents a sequence number of a current control time, k is a positive integer greater than 0, a control time is reached every preset time, and when state information of the control time satisfies a trigger condition, the current control time is recorded as a trigger time. m (k) represents the sequence number of the last trigger time of the current power supply;
the fourth formula represents the triggering moment of the current power supply such that +.>
The value of m is taken to be less than the maximum value of k, and m (k) is equal to this maximum value. The sequence number m (k) of the last trigger time closest to the current control time k is obtained through a fourth formula, and the last trigger time +.>
Determining the reactive state quantity at the last trigger time>
Similarly, the latest reactive state quantity of the neighbor power supply is +.>
Determining the reactive state quantity at the last trigger time according to a fifth formula
Reactive state quantity up to date with neighbor power supply>
Unbalance amount u of (2) Qi (k)。
In addition, according to the difference value between the local latest reactive state quantity and the reactive state quantity at the last trigger time and the unbalance quantity between the reactive state quantity at the last trigger time and the latest reactive state quantity of the neighbor power supply, whether the trigger condition is met is judged, and the embodiment provides a preferable scheme, and according to the difference value and the unbalance quantity, whether the trigger condition is met is judged, including:
the preset trigger parameters are obtained and the preset trigger parameters are obtained,
judging whether the triggering condition is met or not according to a sixth formula combining the preset triggering parameter, the difference value and the unbalance amount;
wherein, the sixth formula is: i e Qi (k)|≥ε|u Qi (k)|，
Epsilon is a preset trigger parameter, e Qi (k) The difference value between the local latest reactive state quantity and the reactive state quantity at the last trigger time is obtained.
The preset trigger parameter epsilon mentioned in the embodiment is a parameter preset according to actual design requirements, and the embodiment is not limited to a specific value of the preset trigger parameter epsilon and can be set according to actual conditions. Specifically, when the preset triggering parameter, the difference value and the unbalance amount meet a third formula, the current power supply sends the local latest reactive state amount to the neighbor power supply, the current control is recorded as the triggering moment, and if the preset triggering parameter, the difference value and the unbalance amount do not meet the third formula, the reactive state amount acquired by the neighbor power supply still keeps the reactive state amount at the last triggering moment.
By the high-density distributed power supply communication method provided by the embodiment of the application, whether the reactive state quantity at the moment reaches the triggering condition is judged, and the reactive state quantity information is transmitted only when the triggering condition is met, so that the problem of resource waste caused by information transmission still is solved when the local reactive state quantity is not changed greatly at the adjacent control moment.
According to the above embodiment, the current power supply establishes a new distributed cooperative control input based on the latest voltage observation value and the latest reactive state quantity of the currently obtained neighbor power supply in combination with the seventh formula, the eighth formula:
wherein, the seventh formula is: v (V) i (k)＝V n -n i Q i (k)+u i (k)；
The eighth formula is:
the ninth formula is:
wherein T is i Representing a preset time interval, V, of the current power supply i i Representing the output voltage, k, of a distributed power supply i 1 Represents integral coefficient, k of reactive power average controller 2 Representing the integral coefficient, k, of the voltage recovery controller 3 Representing the voltage observer integration coefficient.
In the above embodiments, the high-density distributed power supply communication method is described in detail, and the present application further provides corresponding embodiments of the high-density distributed power supply communication device. It should be noted that the present application describes an embodiment of the device portion from two angles, one based on the angle of the functional module and the other based on the angle of the hardware.
Fig. 3 is a structural diagram of a high-density distributed power communication device according to an embodiment of the present application, where, as shown in fig. 3, the high-density distributed power communication device includes:
the acquisition module 31 is configured to acquire local latest state information of a current power supply at a current control moment, last trigger moment state information of the current power supply, and neighbor power supply latest state information of a neighbor power supply;
a determining module 32, configured to determine a difference between the local latest state information and the last trigger time state information, and determine an unbalance amount between the last trigger time state information and the latest state information of the neighbor power supply;
a judging module 33, configured to judge whether the triggering condition is satisfied according to the difference value and the unbalance amount; if yes, trigger the sending module 34;
and the sending module 34 is configured to send the local latest status information to the neighbor power supply, and record the current control time as the trigger time.
Specifically, when the current power supply reaches a preset control moment, the acquisition module 31 acquires local latest state information of the current power supply at the current control moment, last trigger moment state information of the current power supply and neighbor power supply latest state information of the neighbor power supply; the determining module 32 determines a difference value between the local latest state information and the last trigger time state information, and determines an unbalance amount between the last trigger time state information and the latest state information of the neighbor power supply; the judging module 33 judges whether the triggering condition is satisfied according to the difference value and the unbalance amount; if yes, the trigger sending module 34 sends the local latest status information to the neighbor power supply, and the current control time is recorded as the trigger time. If the triggering condition is not met, the local state information is not sent to the neighbor power supply, and the neighbor power supply keeps the state information acquired at the last triggering moment.
Through the high-density distributed power supply communication device provided by the application, whether the state information at the moment reaches the triggering condition is judged, and the information transmission is carried out only when the triggering condition is met, so that the problem of resource waste caused by the fact that the information transmission is still carried out when the local state quantity at the adjacent control moment is not greatly changed is solved.
Since the embodiments of the apparatus portion and the embodiments of the method portion correspond to each other, the embodiments of the apparatus portion are referred to the description of the embodiments of the method portion, and are not repeated herein.
Fig. 4 is a block diagram of another high-density distributed power communication device according to an embodiment of the present application, where, as shown in fig. 4, the high-density distributed power communication device includes: a memory 40 for storing a computer program;
a processor 41 for implementing the steps of the high density distributed power supply communication method of the above embodiment when executing a computer program.
The high-density distributed power communication device provided in this embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, a desktop computer, or the like.
Processor 41 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc., among others. The processor 41 may be implemented in hardware in at least one of a digital signal processor (Digital Signal Processor, DSP), a Field programmable gate array (Field-Programmable Gate Array, FPGA), a programmable logic array (Programmable Logic Array, PLA). The processor 41 may also comprise a main processor, which is a processor for processing data in an awake state, also called central processor (Central Processing Unit, CPU), and a coprocessor; a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 41 may be integrated with an image processor (Graphics Processing Unit, GPU) for rendering and rendering of content required to be displayed by the display screen. In some embodiments, the processor 41 may also include an artificial intelligence (Artificial Intelligence, AI) processor for processing computing operations related to machine learning.
Memory 40 may include one or more computer-readable storage media, which may be non-transitory. Memory 40 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 40 is at least used for storing a computer program 401, which, when loaded and executed by the processor 41, is capable of implementing the relevant steps of the high-density distributed power supply communication method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 40 may further include an operating system 402, data 403, and the like, where the storage manner may be transient storage or permanent storage. Operating system 402 may include, among other things, windows, unix, linux. Data 403 may include, but is not limited to, data related to implementing a high density distributed power communication method, and the like.
In some embodiments, the high-density distributed power communication device may further include a display screen 42, an input-output interface 43, a communication interface 44, a power supply 45, and a communication bus 46.
Those skilled in the art will appreciate that the configuration shown in fig. 4 is not limiting of a high density distributed power communications device and may include more or fewer components than shown.
The high-density distributed power supply communication device provided by the embodiment of the application comprises a memory and a processor, wherein when the processor executes a program stored in the memory, the processor can realize the following method: the high-density distributed power supply communication method judges whether the state information at the moment reaches the triggering condition or not, and only transmits the information when the triggering condition is met, so that the problem of resource waste caused by information transmission still is solved when the local state quantity at the adjacent control moment does not change greatly.
Finally, the present application also provides a corresponding embodiment of the computer readable storage medium. The computer readable storage medium has stored thereon a computer program which when executed by a processor performs the steps described in the above embodiments of the high density distributed power supply communication method.
It will be appreciated that the methods of the above embodiments, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored on a computer readable storage medium. With such understanding, the technical solution of the present application, or a part contributing to the prior art or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, performing all or part of the steps of the method described in the various embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The computer readable storage medium provided in this embodiment has a computer program stored thereon, which when executed by a processor, can implement the following method: the high-density distributed power supply communication method judges whether the state information at the moment reaches the triggering condition or not, and only transmits the information when the triggering condition is met, so that the problem of resource waste caused by information transmission still is solved when the local state quantity at the adjacent control moment does not change greatly.
The method, the device and the medium for high-density distributed power supply communication provided by the application are described in detail. In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A method of high density distributed power communications, comprising:
collecting local latest state information of a current power supply at a current control moment, state information of the current power supply at the last trigger moment and latest state information of neighbor power supplies;
determining a difference value between the local latest state information and the last trigger time state information, and determining an unbalance amount between the last trigger time state information and the latest state information of the neighbor power supply;
judging whether a triggering condition is met or not according to the difference value and the unbalance amount;
if yes, the local latest state information is sent to the neighbor power supply, and the current control time is recorded as a trigger time.
2. The method of claim 1, wherein the local update status information is a local update voltage observation;
correspondingly, the state information of the last trigger time is the voltage observed value of the last trigger time, and the latest state information of the neighbor power supply is the latest voltage observed value of the neighbor power supply.
3. The method of claim 2, wherein determining an imbalance between the last trigger time state information and the neighbor power supply latest state information comprises:
determining a sequence number of the last trigger time according to the first formula;
acquiring the voltage observation value of the last trigger time corresponding to the sequence number;
determining the unbalance amount of the voltage observed value at the last trigger moment and the latest voltage observed value of the neighbor power supply according to a second formula;
wherein, the first formula is:
i represents the current power supply, k represents the sequence number of the current control moment, m represents a variable, and m (k) represents the sequence number of the last trigger moment of the current power supply;
representing the trigger time of the current power supply;
the second formula is:
j represents the neighbor power supply, N i Representing the number of said neighbor power supplies of said current power supply, a ij Representing the communication weight between the current power supply and the neighbor power supply, V representing the voltage,
representing the last trigger time of the current power supply,
-a voltage observation of said last trigger time representing said last trigger time of said current power supply, ->
A latest voltage observation value of the neighbor power supply, u, representing the last trigger time of the neighbor power supply Vi (k) And the unbalance amount of the last trigger time voltage observed value and the latest voltage observed value of the neighbor power supply is represented.
4. The method of claim 3, wherein determining whether a trigger condition is satisfied based on the difference and the unbalance amount comprises:
the preset trigger parameters are obtained and the preset trigger parameters are obtained,
judging whether a triggering condition is met or not according to a third formula combining the preset triggering parameter, the difference value and the unbalance;
wherein the third formula is: i e Vi (k)|≥ε|u Vi (k)|，
Epsilon is the preset trigger parameter, e Vi (k) And the difference value between the local latest voltage observed value and the voltage observed value at the last trigger moment is obtained.
5. The method of claim 1, wherein the local up-to-date status information is a local up-to-date reactive status quantity;
correspondingly, the state information at the last trigger time is the reactive state quantity at the last trigger time, and the latest state information of the neighbor power supply is the latest reactive state quantity of the neighbor power supply.
6. The method of claim 5, wherein determining an imbalance between the last trigger time state information and the neighbor power supply latest state information comprises:
determining a sequence number of the last trigger time according to a fourth formula;
acquiring the reactive state quantity of the last trigger moment corresponding to the sequence number;
determining the unbalance amount of the reactive state quantity at the last triggering moment and the latest reactive state quantity of the neighbor power supply according to a fifth formula;
wherein the fourth formula is:
i represents the current power supply, k represents the sequence number of the current control moment, m represents a variable, and m (k) represents the sequence number of the last trigger moment of the current power supply;
representing the trigger time of the current power supply;
the fifth formula is:
j represents the neighbor power supply, N i Representing the number of said neighbor power supplies of said current power supply, a ij Representing the communication weight between the current power supply and the neighbor power supply, n representing the reactive power droop coefficient,
-said last trigger moment representing said current power supply,>
reactive state quantity representing the last trigger time of the current power supply, +.>
Representing the latest reactive state quantity of the neighbor power supply, u Qi (k) And the unbalance amount of the reactive state quantity at the last triggering moment and the latest reactive state quantity of the neighbor power supply is represented.
7. The method of claim 6, wherein determining whether a trigger condition is satisfied based on the difference and the unbalance amount comprises:
the preset trigger parameters are obtained and the preset trigger parameters are obtained,
judging whether a triggering condition is met or not according to the preset triggering parameter, the difference value and the unbalance amount in combination with a sixth formula;
wherein the sixth formula is: i e Qi (k)|≥ε|u Qi (k)|，
Epsilon is the preset trigger parameter, e Qi (k) And the difference value between the local latest reactive state quantity and the reactive state quantity at the last trigger moment is obtained.
8. A high density distributed power communications apparatus, comprising:
the acquisition module is used for acquiring the local latest state information of the current power supply at the current control moment, the last trigger moment state information of the current power supply and the latest state information of the neighbor power supply;
the determining module is used for determining the difference value between the local latest state information and the last triggering moment state information and determining the unbalance amount between the last triggering moment state information and the latest state information of the neighbor power supply;
the judging module is used for judging whether the triggering condition is met or not according to the difference value and the unbalance quantity; if yes, triggering a sending module;
the sending module is configured to send the local latest status information to the neighbor power supply, and record the current control time as a trigger time.
9. A high density distributed power communications apparatus, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the high density distributed power supply communication method as claimed in any one of claims 1 to 7 when executing said computer program.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the high density distributed power supply communication method of any of claims 1 to 7.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017018344A1 (en) * | 2015-07-29 | 2017-02-02 | 京セラ株式会社 | Communication device and communication method |
| CN106505630A (en) * | 2016-12-30 | 2017-03-15 | 南京邮电大学 | Isolated island micro-capacitance sensor frequency voltage control method for coordinating based on event trigger mechanism |
| CN110429578A (en) * | 2019-07-23 | 2019-11-08 | 华中科技大学 | A kind of distributed DC grid control method |
| CN110858718A (en) * | 2018-08-22 | 2020-03-03 | 郑州大学 | Alternating current micro-grid distributed event-driven frequency control method considering economy |
| CN112714064A (en) * | 2020-12-29 | 2021-04-27 | 广东电网有限责任公司电力调度控制中心 | Power line communication network topology control method, device, equipment and medium |
| WO2021114286A1 (en) * | 2019-12-13 | 2021-06-17 | 华为技术有限公司 | Control method and apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811407B (en) * | 2016-04-18 | 2018-07-06 | 清华大学 | A kind of micro-capacitance sensor primary frequency modulation control method based on distributed Newton method |
-
2022
- 2022-01-25 CN CN202210087231.5A patent/CN114449374B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017018344A1 (en) * | 2015-07-29 | 2017-02-02 | 京セラ株式会社 | Communication device and communication method |
| CN106505630A (en) * | 2016-12-30 | 2017-03-15 | 南京邮电大学 | Isolated island micro-capacitance sensor frequency voltage control method for coordinating based on event trigger mechanism |
| CN110858718A (en) * | 2018-08-22 | 2020-03-03 | 郑州大学 | Alternating current micro-grid distributed event-driven frequency control method considering economy |
| CN110429578A (en) * | 2019-07-23 | 2019-11-08 | 华中科技大学 | A kind of distributed DC grid control method |
| WO2021114286A1 (en) * | 2019-12-13 | 2021-06-17 | 华为技术有限公司 | Control method and apparatus |
| CN112714064A (en) * | 2020-12-29 | 2021-04-27 | 广东电网有限责任公司电力调度控制中心 | Power line communication network topology control method, device, equipment and medium |
Non-Patent Citations (1)
| Title |
|---|
| 基于CAN总线的供电系统三相并联逆变器同步控制方法;王江波;杨仁刚;高春凤;;农业工程学报(12);全文 * |
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