CN117013694A - Control method, device, equipment and medium for running state of hydropower cluster micro-grid - Google Patents

Control method, device, equipment and medium for running state of hydropower cluster micro-grid Download PDF

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Publication number
CN117013694A
CN117013694A CN202310828772.3A CN202310828772A CN117013694A CN 117013694 A CN117013694 A CN 117013694A CN 202310828772 A CN202310828772 A CN 202310828772A CN 117013694 A CN117013694 A CN 117013694A
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China
Prior art keywords
grid
target
rule
hydropower
database
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CN202310828772.3A
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Chinese (zh)
Inventor
林志超
罗步升
钟日平
杨仕锋
王英民
杨霖
王晓光
寨战争
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Guangdong Power Grid Co Ltd
Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Guangdong Power Grid Co Ltd
Huizhou Power Supply Bureau of Guangdong Power Grid Co Ltd
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Priority to CN202310828772.3A priority Critical patent/CN117013694A/en
Publication of CN117013694A publication Critical patent/CN117013694A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • H02J3/241—The oscillation concerning frequency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/388—Islanding, i.e. disconnection of local power supply from the network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

The invention discloses a control method, a device, equipment and a medium for the running state of a hydropower cluster micro-grid. The method comprises the following steps: acquiring operation data of the hydropower cluster micro-grid according to a preset acquisition period through an equipment resource layer, and uploading the operation data to an operation database of a public data layer; determining a target service function through a service function layer, and acquiring operation data of a target period matched with the target service function in an operation database and a target rule matched with the target service function in a rule database in a public data layer; and controlling the running state of the hydropower cluster micro-grid according to the running data of the target period and the target rule through the service functional layer. The technical scheme solves the problems of large response delay, poor cooperativity and the like caused by the control of the dispatching master station of the hydropower cluster micro-grid, and can avoid response delay while improving cooperativity of the hydropower cluster micro-grid.

Description

Control method, device, equipment and medium for running state of hydropower cluster micro-grid
Technical Field
The invention relates to the technical field of power control, in particular to a method, a device, equipment and a medium for controlling the running state of a hydropower cluster micro-grid.
Background
Along with the transformation of the power grid energy, the water and electricity is used as clean energy, is environment-friendly and renewable, has a great pushing effect on realizing the carbon neutralization of the energy, and has a certain positive effect on regional energy supplement. The abundant hydropower resources can be used for constructing hydropower cluster micro-grids according to local conditions, so that the load of a nearby area is guaranteed. The hydropower cluster micro-grid is flexible to operate, can be operated in parallel with a traditional grid, and can also be disconnected from a main grid island to operate.
At present, a hydropower cluster micro-grid is connected with an upper dispatching master station and each lower hydropower controller through a micro-grid controller. The micro-grid controller can acquire the equipment state in the hydropower cluster through each hydropower controller, sense the micro-grid state, and perform mode management and switching control according to the dispatching instruction of the dispatching master station.
However, in the prior art, the control of the hydropower cluster micro-grid needs to be connected with the dispatching master station, the response delay is large, the self-adaptive autonomous decision capability is lacked, and the synergistic effect of the regional hydropower clusters is difficult to develop.
Disclosure of Invention
The invention provides a control method, a device, equipment and a medium for the running state of a hydropower cluster micro-grid, which are used for solving the problems of large response delay, poor cooperativity and the like caused by the control of a dispatching master station of the hydropower cluster micro-grid, and can avoid response delay while improving the cooperativity of the hydropower cluster micro-grid.
According to one aspect of the invention, a control method of an operation state of a hydropower cluster micro-grid is provided, and the method is executed by a hydropower cluster control system, wherein the hydropower cluster control system comprises an equipment resource layer, a public data layer and a service function layer; the public data layer comprises an operation database and a rule database;
acquiring operation data of the hydropower cluster micro-grid according to a preset acquisition period through an equipment resource layer, and uploading the operation data to an operation database of a public data layer;
determining a target service function through a service function layer, and acquiring operation data of a target period matched with the target service function in an operation database and a target rule matched with the target service function in a rule database in a public data layer;
and controlling the running state of the hydropower cluster micro-grid according to the running data of the target period and the target rule through the service functional layer.
According to another aspect of the invention, there is provided a control device for an operation state of a hydropower cluster micro-grid, the device being configured in a hydropower cluster control system, the hydropower cluster control system including a device resource layer, a public data layer and a service function layer; the public data layer comprises an operation database and a rule database; the device comprises:
The operation data acquisition module is used for acquiring the operation data of the hydropower cluster micro-grid according to a preset acquisition period through the equipment resource layer and uploading the operation data to an operation database of the public data layer;
the target rule acquisition module is used for determining a target service function through the service function layer, acquiring the operation data of a target period matched with the target service function in the operation database in the public data layer, and acquiring a target rule matched with the target service function in the rule database;
and the running state control module is used for controlling the running state of the hydropower cluster micro-grid according to the running data of the target period and the target rule through the service functional layer.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor, so that the at least one processor can execute the control method of the running state of the hydropower cluster micro-grid according to any embodiment of the invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement a method for controlling the operation state of a hydropower cluster micro-grid according to any one of the embodiments of the present invention when executed.
According to the technical scheme, the operation data of the hydropower cluster micro-grid are obtained through the equipment resource layer according to the preset acquisition period, and the operation data are uploaded to an operation database of the public data layer; determining a target service function through a service function layer, and acquiring operation data of a target period matched with the target service function in an operation database and a target rule matched with the target service function in a rule database in a public data layer; and controlling the running state of the hydropower cluster micro-grid according to the running data of the target period and the target rule through the service functional layer. The technical scheme solves the problems of large response delay, poor cooperativity and the like caused by the control of the dispatching master station of the hydropower cluster micro-grid, and can avoid response delay while improving cooperativity of the hydropower cluster micro-grid.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for controlling an operation state of a hydropower cluster micro-grid according to a first embodiment of the invention;
fig. 2 is a flowchart of a method for controlling an operation state of a hydropower cluster micro-grid according to a second embodiment of the invention;
fig. 3 is a schematic structural diagram of a control device for an operation state of a hydropower cluster micro-grid according to a third embodiment of the invention;
fig. 4 is a schematic structural diagram of an electronic device for implementing a method for controlling an operation state of a hydropower cluster micro-grid according to an embodiment of the invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The technical scheme of the application obtains, stores, uses, processes and the like the data, which all meet the relevant regulations of national laws and regulations.
Example 1
Fig. 1 is a flowchart of a method for controlling an operation state of a hydropower cluster micro-grid according to an embodiment of the present application, where the embodiment is applicable to an operation state control scenario of a hydropower cluster micro-grid, and is particularly applicable to hydropower cluster micro-grid control in a communication undeveloped area such as a mountain area and a forest area. The method can be performed by a control device of the running state of the hydropower cluster micro-grid, the device can be realized in the form of hardware and/or software, and the device can be configured in electronic equipment. As shown in fig. 1, the method includes:
S110, acquiring operation data of the hydropower cluster micro-grid through the equipment resource layer according to a preset acquisition period, and uploading the operation data to an operation database of the public data layer.
The scheme can be executed by a hydropower cluster control system, and the hydropower cluster control system can manage hydropower cluster micro-grids in different scenes. Specifically, the hydropower cluster control system may include an equipment resource layer, a public data layer, and a service function layer; the device resource layer may include a voltage, frequency, etc. operational data acquisition device, such as a voltage measurement device. The device resource layer may acquire operation data of the hydropower cluster micro-grid according to a preset period, for example, measure voltage of the hydropower cluster micro-grid according to a preset frequency. And the equipment resource layer uploads the operation data to the public data layer after acquiring the operation data of the hydropower cluster micro-grid. The device resource layer may preprocess the operation data before uploading the common data layer, for example, deleting redundant data, supplementing missing data, marking abnormal data, etc., so as to avoid status judgment errors caused by erroneous data.
The common data layer may include a data store such as a run database, a rules database, and a model database. The operational database may be used to store operational data uploaded by the device resource layer. The rule database can be used for storing the standards of running state judgment, state switching triggering and the like of the hydropower cluster micro-grid. In particular, the rule database may include state recognition rules, state switching rules, and constant frequency control rules. The model database may include a regular calculation model, a control model of the hydropower cluster micro-grid, etc. for providing model support for rule calculation, state control, etc.
The business function layer can provide various business functions of the hydropower cluster micro-grid, such as state identification, off-grid state switching, grid-connected state switching, voltage stability control, frequency stability control and the like. The service function layer can respond to the function selection operation of the user to realize the service function.
S120, determining a target service function through a service function layer, and acquiring operation data of a target period matched with the target service function in an operation database and acquiring a target rule matched with the target service function in a rule database in a public data layer.
In response to a user's function selection operation, the business function layer may locate a target business function. The power operation and maintenance personnel can be used as a user of the hydropower cluster control system to perform function selection. The user can input the target service function in the input box of the function selection interface, click the virtual button of the target service function in the function selection interface, and press the physical key of the target service function on the console. The service function layer can obtain a target service function according to the function selection operation of the user.
After determining the target service function, the service function layer may perform data screening on the public data layer to obtain the operation data of the target period matched with the target service function and the target rule matched with the target service function. It should be noted that, the operation data of the target period matched with the target service function may be operation data of a preset number of acquisition periods, for example, operation data of 5 acquisition periods. The target rules that match the target business function may be all the rules required to implement the target business function, e.g., the target business function is a state identification function, and the target rules may include all the state identification rules in the rule database.
S130, controlling the running state of the hydropower cluster micro-grid through the service functional layer according to the running data of the target period and the target rule.
The service function layer can perform index calculation according to the operation data of the target time period to obtain an operation index corresponding to the target rule. And comparing the operation index with the target rule, judging the feasibility of the target service function by the service function layer, and adaptively controlling the operation state of the hydropower cluster micro-grid under the condition that the operation index meets the target rule. It will be appreciated that the target rule may include one rule or may include a plurality of rules. After the hydropower cluster control system outputs the control strategy, the execution result of the control strategy can be obtained through the equipment resource layer, a new rule is generated according to the execution result, and the new rule is stored in the rule database. The hydropower cluster control system can store the historical control events to the public data layer in the form of a log so as to analyze the historical control events later to obtain a new model and rules.
According to the technical scheme, the operation data of the hydropower cluster micro-grid are obtained through the equipment resource layer according to the preset acquisition period, and the operation data are uploaded to an operation database of the public data layer; determining a target service function through a service function layer, and acquiring operation data of a target period matched with the target service function in an operation database and a target rule matched with the target service function in a rule database in a public data layer; and controlling the running state of the hydropower cluster micro-grid according to the running data of the target period and the target rule through the service functional layer. The technical scheme solves the problems of large response delay, poor cooperativity and the like caused by the control of the dispatching master station of the hydropower cluster micro-grid, and can avoid response delay while improving cooperativity of the hydropower cluster micro-grid.
Example two
Fig. 2 is a flowchart of a method for controlling an operation state of a hydropower cluster micro-grid according to a second embodiment of the present invention, where the present embodiment is refined based on the foregoing embodiment. As shown in fig. 2, the method includes:
s210, acquiring operation data of the hydropower cluster micro-grid through the equipment resource layer according to a preset acquisition period, and uploading the operation data to an operation database of the public data layer.
In this scheme, the public data layer also includes a model database including control models for matching the target business functions.
S220, determining a target service function through the service function layer, and acquiring operation data of a target period matched with the target service function in an operation database and acquiring a target rule matched with the target service function in a rule database in the public data layer.
Optionally, the obtaining the operation data of the target period matched with the target service function in the operation database and the obtaining the target rule matched with the target service function in the rule database includes:
if the target service function is a state identification function, acquiring operation data of the current period in an operation database, and acquiring a state identification rule in a rule database;
If the target service function is an off-grid state switching function or a grid-connected state switching function, acquiring operation data of a current period in an operation database, and acquiring a state switching rule in a rule database;
and if the target service function is a voltage stability control function or a frequency stability control function, acquiring operation data of the current period in an operation database, and acquiring constant frequency control rules in a rule database.
On the basis of the scheme, the operation data comprise frequency and output voltage of the hydropower cluster micro-grid;
the state recognition rule includes:
if the frequency meets the preset frequency range or the difference value between the amplitude of the output voltage and the preset voltage reference value is within the preset first difference value range, determining that the hydropower cluster micro-grid is in a grid-connected operation state;
if the difference value between the frequency and the preset frequency reference value is higher than a preset first difference value threshold, and the difference value between the amplitude of the output voltage and the preset voltage reference value is in a preset second difference value range, determining that the hydropower cluster micro-grid is in an off-grid running state.
In one possible solution, the operation data further includes an output power and an operation mode of the hydropower cluster micro grid;
The state switching rule includes:
if the hydropower cluster micro-grid is in a grid-connected operation state and the operation mode of the hydropower cluster micro-grid is a constant water level mode, controlling the front water level of the pool to be in a target water level range through the equipment resource layer;
if the hydropower cluster micro-grid is in a grid-connected operation state, the operation mode of the hydropower cluster micro-grid is a constant power mode, and the difference value between the output power and the target power is larger than a preset second difference value threshold, adjusting the angle of a guide vane in the hydropower cluster micro-grid so that the output power is in the target power range;
if the hydropower cluster micro-grid is in a grid-connected operation state, the operation mode of the hydropower cluster micro-grid is a constant power factor mode, and the difference value between the power factor of the output power and the target factor is larger than a preset third difference value threshold, the power factor of the output power is adjusted so that the power factor is in the target factor range;
and if the hydropower cluster micro-grid is in an off-grid running state, setting the running mode of the hydropower cluster micro-grid to be a constant-voltage constant-frequency mode.
Optionally, the constant frequency control rule includes:
and if the hydropower cluster micro-grid is in an island operation state and the load change in the hydropower cluster micro-grid exceeds a preset change threshold, adjusting the mechanical power of the generator according to the load change.
S230, controlling the running state of the hydropower cluster micro-grid based on the control model matched with the target service function through the service function layer according to the running data of the target time period and the target rule.
In a specific example, the small hydropower station cluster control system realizes analysis and calculation of operation data through rule driving. Rule-driven based task processing logic can be characterized as: the functions of logic calculation, control and the like which are needed to be performed by data processing are described as rules, and different rules can drive the small hydropower station cluster control system to make different control instructions and behaviors, so that the modularization of running data processing is realized.
The control process of the running state of the micro-grid of the small hydropower station cluster can be briefly described as that when the small hydropower station cluster control system detects a trigger event, the trigger event is matched with rules in the rule database, and a corresponding control strategy is executed according to the matched target rules. The expression form of a rule can be divided into a rule front part and a rule back part, wherein the rule front part is a condition for triggering the rule, and the rule back part is a conclusion and an action determined according to the triggering condition of the condition.
The workflow based on rule-driven small hydropower cluster control can be a completely or partially autonomous execution process according to actual business processing needs. The control of the small hydropower station clusters is triggered by events, and the rule realization process of the service functions relies on the synergistic effect of a rule database, an operation database and a model database.
For example, the workflow controlled by the small hydropower station cluster consists of three parts A1, A2 and A3, wherein A1 consists of rules B, C and D, and the specific implementation steps of the workflow can be as follows:
step 1: judging the authenticity of the condition X;
step 2: if X is true, then execute rule B, C, D; if X is false, jumping to the step 5;
step 3: after the rule B is completed, judging the authenticity of the condition Z;
step 4: if Z is true, returning to the step 1; if Z is false, A1 ends;
step 5: judging the authenticity of the condition Y;
step 6: if Y is true, executing A2; if Y is false, executing A3;
step 7: and after the corresponding rules of A2 and A3 are executed, outputting a processing result.
It is readily understood that the rules database may include state identification rules, off-grid state switching rules, and off-grid constant frequency control rules.
Specifically, the state recognition rule may include:
rule 1: when the output power disturbance of the hydropower cluster unit is increased and reduced, if the difference value between the frequency measured in real time and the reference value of the frequency is in the range, or the difference value between the amplitude of the output voltage and the reference value of the voltage is in the range, the small hydropower cluster unit is considered to be in a grid-connected operation stage.
Rule 2: and if the small hydropower station cluster unit is in the off-grid running state, the small hydropower station cluster unit and the load of the unit power supply are comprehensively operated in the island state.
Rule 3: if the difference value between the frequency measured in real time and the reference value of the frequency is higher than 0.2Hz, and the difference value between the output voltage amplitude and the reference value of the voltage is in the range of 0-0.3 Un, the small hydropower station cluster unit is considered to be in an off-grid running state at the moment.
Rule 4: if the change of the frequency is used as a criterion for identifying the island running state of the small hydropower station cluster, the interference on the frequency caused by the fault and other conditions is avoided, and the voltage and current measured values of the small hydropower station cluster are combined for auxiliary analysis and calculation so as to avoid the fault.
The off-grid state switching rule may include:
rule 1: if the small hydropower station cluster unit is integrated into the power grid to operate and the unit operates in a constant water level mode, the intelligent control device detects the water level in front of the pool and a target value of the constant water level, and starts constant water level operation adjustment to control the water level in front of the pool to be in a range of a required/required target water level.
Rule 2: if the small hydropower station cluster unit is integrated into a power grid to operate and the unit operates in a constant power mode, and when the difference value between the power output by the port of the hydropower station unit and the target value exceeds the threshold value of the constant power threshold during the constant power mode operation, starting constant power operation adjustment, and controlling the angle of the guide vane of the unit, so that the output power of the port is kept in the required target range.
Rule 3: if the small hydropower unit is integrated into a power grid to operate and the unit operates in a constant power factor mode, and when the difference value between the power factor of the output power of the port and the required constant power factor target value exceeds the constant power factor threshold value, starting constant power factor operation adjustment, so that the power factor is controlled to be in the required target range.
Rule 4: if the small hydropower unit is in an off-grid running state, the small hydropower unit is set to run at constant voltage and constant frequency, and the active output and exciting current of the generator are increased or reduced within the lower limit range of the generator capacity and the water level in front of the pool, so that the voltage and frequency of the system stably run in a rated range.
Rule 5: if the small hydropower station group and the local load form the regional micro-grid, the small hydropower station group enters an island mode from a grid-connected mode, and when the hydropower controller detects voltage and frequency fluctuation of the power grid, the small hydropower station group is quickly and automatically switched to a VF (voltage/frequency) control node so as to stabilize the voltage and frequency of the regional micro-grid.
Rule 6: if the small hydropower station cluster unit is restored to the grid-connected operation state from the island operation state, the voltage and the frequency tend to be stable, and when no operation risk exists, the hydropower station cluster unit can be manually switched to the constant power mode operation after grid connection is confirmed under the condition that the small hydropower station intelligent controller judges that the voltage and the frequency of the system can be kept stable for a long time.
The constant frequency control rule includes:
rule 1: if the mechanical power of the water turbine in the small hydroelectric generating set and the electromagnetic power of the generator are in a balanced state, the rotating speed of the generator is stable, and the frequency of the island system is stable.
Rule 2: if load fluctuation occurs in the small hydropower station cluster island system, the mechanical power of the prime mover needs to be adjusted according to the load fluctuation condition.
Rule 3: and if the small hydropower station cluster unit starts the mechanical power adjustment of the prime motor, adjusting and controlling the position of the guide vane of the water turbine through a speed regulator system of the water turbine.
The small hydropower stations are controlled by the dispatching master station in a centralized mode through the small hydropower station grid-connected control mode driven by rules, and the distributed control of grid-connected control can be realized, so that the independent control capacity of the small hydropower stations in the area is improved, and the on-site control and the area cooperative control are realized. The control instruction of grid-connected operation of the small hydropower station clusters can be rapidly determined by using a rule driving mode, and the response capability of the small hydropower station clusters in the intelligent linkage process of source-grid-charge-storage is improved.
According to the technical scheme, the operation data of the hydropower cluster micro-grid are obtained through the equipment resource layer according to the preset acquisition period, and the operation data are uploaded to an operation database of the public data layer; determining a target service function through a service function layer, and acquiring operation data of a target period matched with the target service function in an operation database and a target rule matched with the target service function in a rule database in a public data layer; and controlling the running state of the hydropower cluster micro-grid according to the running data of the target period and the target rule through the service functional layer. The technical scheme solves the problems of large response delay, poor cooperativity and the like caused by the control of the dispatching master station of the hydropower cluster micro-grid, and can avoid response delay while improving cooperativity of the hydropower cluster micro-grid.
Example III
Fig. 3 is a schematic structural diagram of a control device for an operation state of a hydropower cluster micro-grid according to a third embodiment of the invention. The device is configured in a hydropower cluster control system, and the hydropower cluster control system comprises an equipment resource layer, a public data layer and a service function layer; the public data layer comprises an operation database and a rule database; as shown in fig. 3, the apparatus includes:
an operation data obtaining module 310, configured to obtain operation data of the hydropower cluster micro-grid according to a preset collection period through an equipment resource layer, and upload the operation data to an operation database of a public data layer;
the target rule obtaining module 320 is configured to determine a target service function through the service function layer, and obtain, in the public data layer, operation data of a target period in the operation database, which is matched with the target service function, and obtain a target rule in the rule database, which is matched with the target service function;
the operation state control module 330 is configured to control, by using the service function layer, an operation state of the hydropower cluster micro-grid according to the operation data of the target period and the target rule.
In this scheme, optionally, the service function layer includes a state recognition function, an off-grid state switching function, a grid-connected state switching function, a voltage stabilization control function, and a frequency stabilization control function;
The rule database comprises a state identification rule, a state switching rule and a constant frequency control rule.
Based on the above scheme, the target rule obtaining module 320 is specifically configured to:
if the target service function is a state identification function, acquiring operation data of the current period in an operation database, and acquiring a state identification rule in a rule database;
if the target service function is an off-grid state switching function or a grid-connected state switching function, acquiring operation data of a current period in an operation database, and acquiring a state switching rule in a rule database;
and if the target service function is a voltage stability control function or a frequency stability control function, acquiring operation data of the current period in an operation database, and acquiring constant frequency control rules in a rule database.
In one possible solution, the operating data include frequency and output voltage of the hydropower cluster micro-grid;
the state recognition rule includes:
if the frequency meets the preset frequency range or the difference value between the amplitude of the output voltage and the preset voltage reference value is within the preset first difference value range, determining that the hydropower cluster micro-grid is in a grid-connected operation state;
If the difference value between the frequency and the preset frequency reference value is higher than a preset first difference value threshold, and the difference value between the amplitude of the output voltage and the preset voltage reference value is in a preset second difference value range, determining that the hydropower cluster micro-grid is in an off-grid running state.
On the basis of the scheme, the operation data also comprises the output power and the operation mode of the hydropower cluster micro-grid;
the state switching rule includes:
if the hydropower cluster micro-grid is in a grid-connected operation state and the operation mode of the hydropower cluster micro-grid is a constant water level mode, controlling the front water level of the pool to be in a target water level range through the equipment resource layer;
if the hydropower cluster micro-grid is in a grid-connected operation state, the operation mode of the hydropower cluster micro-grid is a constant power mode, and the difference value between the output power and the target power is larger than a preset second difference value threshold, adjusting the angle of a guide vane in the hydropower cluster micro-grid so that the output power is in the target power range;
if the hydropower cluster micro-grid is in a grid-connected operation state, the operation mode of the hydropower cluster micro-grid is a constant power factor mode, and the difference value between the power factor of the output power and the target factor is larger than a preset third difference value threshold, the power factor of the output power is adjusted so that the power factor is in the target factor range;
And if the hydropower cluster micro-grid is in an off-grid running state, setting the running mode of the hydropower cluster micro-grid to be a constant-voltage constant-frequency mode.
In this embodiment, optionally, the constant frequency control rule includes:
and if the hydropower cluster micro-grid is in an island operation state and the load change in the hydropower cluster micro-grid exceeds a preset change threshold, adjusting the mechanical power of the generator according to the load change.
In a preferred embodiment, the common data layer further comprises a model database; the model database comprises a control model matched with the target service function;
the operation state control module 330 is specifically configured to:
and controlling the running state of the hydropower cluster micro-grid based on the control model matched with the target service function by the service function layer according to the running data of the target time period and the target rule.
The control device for the running state of the hydropower cluster micro-grid provided by the embodiment of the invention can execute the control method for the running state of the hydropower cluster micro-grid provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 4 shows a schematic diagram of an electronic device 410 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 410 includes at least one processor 411, and a memory, such as a Read Only Memory (ROM) 412, a Random Access Memory (RAM) 413, etc., communicatively connected to the at least one processor 411, wherein the memory stores computer programs executable by the at least one processor, and the processor 411 may perform various suitable actions and processes according to the computer programs stored in the Read Only Memory (ROM) 412 or the computer programs loaded from the storage unit 418 into the Random Access Memory (RAM) 413. In the RAM 413, various programs and data required for the operation of the electronic device 410 may also be stored. The processor 411, the ROM 412, and the RAM 413 are connected to each other through a bus 414. An input/output (I/O) interface 415 is also connected to bus 414.
Various components in the electronic device 410 are connected to the I/O interface 415, including: an input unit 416 such as a keyboard, a mouse, etc.; an output unit 417 such as various types of displays, speakers, and the like; a storage unit 418, such as a magnetic disk, optical disk, or the like; and a communication unit 419 such as a network card, modem, wireless communication transceiver, etc. The communication unit 419 allows the electronic device 410 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.
The processor 411 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 411 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 411 performs the various methods and processes described above, such as the control method of the operational state of the hydropower cluster micro grid.
In some embodiments, the method of controlling the operational state of the hydropower cluster micro-grid may be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as the storage unit 418. In some embodiments, some or all of the computer program may be loaded and/or installed onto the electronic device 410 via the ROM 412 and/or the communication unit 419. When the computer program is loaded into RAM 413 and executed by processor 411, one or more steps of the control method of the hydropower cluster microgrid operation state described above may be performed. Alternatively, in other embodiments, the processor 411 may be configured by any other suitable means (e.g., by means of firmware) to perform the control method of the hydropower cluster micro-grid operating state.
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. The method is characterized by being executed by a hydropower cluster control system, wherein the hydropower cluster control system comprises an equipment resource layer, a public data layer and a service function layer; the public data layer comprises an operation database and a rule database;
acquiring operation data of the hydropower cluster micro-grid according to a preset acquisition period through an equipment resource layer, and uploading the operation data to an operation database of a public data layer;
Determining a target service function through a service function layer, and acquiring operation data of a target period matched with the target service function in an operation database and a target rule matched with the target service function in a rule database in a public data layer;
and controlling the running state of the hydropower cluster micro-grid according to the running data of the target period and the target rule through the service functional layer.
2. The method of claim 1, wherein the business function layer comprises a state identification function, an off-grid state switching function, a grid-connected state switching function, a voltage stabilization control function, and a frequency stabilization control function;
the rule database comprises a state identification rule, a state switching rule and a constant frequency control rule.
3. The method according to claim 2, wherein the obtaining operation data of the target period matching the target service function in the operation database, and obtaining the target rule matching the target service function in the rule database, comprises:
if the target service function is a state identification function, acquiring operation data of the current period in an operation database, and acquiring a state identification rule in a rule database;
If the target service function is an off-grid state switching function or a grid-connected state switching function, acquiring operation data of a current period in an operation database, and acquiring a state switching rule in a rule database;
and if the target service function is a voltage stability control function or a frequency stability control function, acquiring operation data of the current period in an operation database, and acquiring constant frequency control rules in a rule database.
4. The method of claim 2, wherein the operational data includes frequency and output voltage of a hydropower cluster microgrid;
the state recognition rule includes:
if the frequency meets the preset frequency range or the difference value between the amplitude of the output voltage and the preset voltage reference value is within the preset first difference value range, determining that the hydropower cluster micro-grid is in a grid-connected operation state;
if the difference value between the frequency and the preset frequency reference value is higher than a preset first difference value threshold, and the difference value between the amplitude of the output voltage and the preset voltage reference value is in a preset second difference value range, determining that the hydropower cluster micro-grid is in an off-grid running state.
5. A method according to claim 3, wherein the operational data further comprises the output power and operational mode of a hydropower cluster micro-grid;
The state switching rule includes:
if the hydropower cluster micro-grid is in a grid-connected operation state and the operation mode of the hydropower cluster micro-grid is a constant water level mode, controlling the front water level of the pool to be in a target water level range through the equipment resource layer;
if the hydropower cluster micro-grid is in a grid-connected operation state, the operation mode of the hydropower cluster micro-grid is a constant power mode, and the difference value between the output power and the target power is larger than a preset second difference value threshold, adjusting the angle of a guide vane in the hydropower cluster micro-grid so that the output power is in the target power range;
if the hydropower cluster micro-grid is in a grid-connected operation state, the operation mode of the hydropower cluster micro-grid is a constant power factor mode, and the difference value between the power factor of the output power and the target factor is larger than a preset third difference value threshold, the power factor of the output power is adjusted so that the power factor is in the target factor range;
and if the hydropower cluster micro-grid is in an off-grid running state, setting the running mode of the hydropower cluster micro-grid to be a constant-voltage constant-frequency mode.
6. The method of claim 2, wherein the constant frequency control rule comprises:
and if the hydropower cluster micro-grid is in an island operation state and the load change in the hydropower cluster micro-grid exceeds a preset change threshold, adjusting the mechanical power of the generator according to the load change.
7. The method of claim 1, wherein the common data layer further comprises a model database; the model database comprises a control model matched with the target service function;
the controlling the running state of the hydropower cluster micro-grid by the service functional layer according to the running data of the target period and the target rule comprises the following steps:
and controlling the running state of the hydropower cluster micro-grid based on the control model matched with the target service function by the service function layer according to the running data of the target time period and the target rule.
8. The control device for the running state of the hydropower cluster micro-grid is characterized by being configured in a hydropower cluster control system, wherein the hydropower cluster control system comprises an equipment resource layer, a public data layer and a service function layer; the public data layer comprises an operation database and a rule database; the device comprises:
the operation data acquisition module is used for acquiring the operation data of the hydropower cluster micro-grid according to a preset acquisition period through the equipment resource layer and uploading the operation data to an operation database of the public data layer;
the target rule acquisition module is used for determining a target service function through the service function layer, acquiring the operation data of a target period matched with the target service function in the operation database in the public data layer, and acquiring a target rule matched with the target service function in the rule database;
And the running state control module is used for controlling the running state of the hydropower cluster micro-grid according to the running data of the target period and the target rule through the service functional layer.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method of controlling the operational state of a hydropower cluster micro-grid according to any one of claims 1-7.
10. A computer readable storage medium, characterized in that the computer readable storage medium stores computer instructions for causing a processor to execute a control method of the operational state of a hydropower cluster micro grid according to any one of claims 1-7.
CN202310828772.3A 2023-07-06 2023-07-06 Control method, device, equipment and medium for running state of hydropower cluster micro-grid Pending CN117013694A (en)

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