CN117728448A - Dynamic regulation and control method, device, equipment and medium for active power distribution network - Google Patents
Dynamic regulation and control method, device, equipment and medium for active power distribution network Download PDFInfo
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Abstract
The disclosure relates to the technical field of power distribution, in particular to a dynamic regulation and control method, a device, equipment and a medium of an active power distribution network, wherein the method comprises the following steps: acquiring node sensitivity data of a plurality of nodes in an active power distribution network; acquiring node correlation parameters between any two nodes in a plurality of nodes according to the node sensitivity data; determining an abnormal node in the plurality of nodes, and determining a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter; regulating and controlling the output voltage of the node to be regulated and controlled. According to the scheme, the output voltage of the node which is related with the abnormal node strongly can be regulated and controlled, the load flow re-optimization of the active power distribution network is facilitated, the rapid and accurate regulation and control of the active power distribution network are facilitated, and therefore the full consumption can be achieved, and meanwhile fluctuation of the node in the active power distribution network is effectively stabilized.
Description
Technical Field
The disclosure relates to the technical field of power distribution, in particular to a dynamic regulation and control method, a device, equipment and a medium for an active power distribution network.
Background
Along with the continuous increase of the proportion of the distributed photovoltaic nodes in the power distribution network, the influence of the fluctuation of the output force of the distributed photovoltaic nodes on the power distribution network is not negligible, and the fluctuation of the photovoltaic power of the distributed photovoltaic nodes can be transmitted to the main network through the downstream network points to influence the safe and stable operation of the power grid.
In addition, along with the wide access of the distributed photovoltaic nodes, the power distribution network is gradually changed into an active power distribution network from a load power grid, and the characteristics of wide points, multiple faces, large overall scale and large overall are integrally presented by combining a medium-voltage power distribution network and a low-voltage power distribution network, but the automatic regulation capability of the active power distribution network is not high, so that the active power distribution network with high permeability can safely and efficiently operate under the condition of large-scale medium-low-voltage distributed photovoltaic node access, and related work needs to be carried out in the aspects of the cooperation of distributed photovoltaic access planning, power distribution network planning, secondary equipment planning, distributed photovoltaic high-efficiency absorption, adjustable load peak clipping and valley filling cooperative control and the like.
In summary, the applicant finds out how to dynamically regulate and control an active power distribution network, so as to achieve sufficient digestion, and meanwhile, stabilize the fluctuation of nodes in the active power distribution network, which is a problem to be solved in the prior art.
Disclosure of Invention
In order to solve the problems in the related art, embodiments of the present disclosure provide a method, an apparatus, a device, and a medium for dynamic regulation of an active power distribution network.
In a first aspect, an embodiment of the present disclosure provides a dynamic regulation method for an active power distribution network, where the method is applied to a fusion terminal in the active power distribution network, and the method includes:
node sensitivity data of a plurality of nodes in the active power distribution network are obtained, wherein the node sensitivity data comprise output voltage variation, node active power variation and node reactive power variation;
acquiring node correlation parameters between any two nodes in a plurality of nodes according to the node sensitivity data;
determining an abnormal node in the plurality of nodes, and determining a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter;
regulating and controlling the output voltage of the node to be regulated and controlled.
In one embodiment of the present disclosure, the method further comprises:
acquiring regulated output power of the node to be regulated according to the regulated output voltage of the node to be regulated;
obtaining output power constraint conditions of different types of nodes in an active power distribution network and line voltage constraint conditions of the active power distribution network;
obtaining target output power of different types of nodes in the active power distribution network and target output voltage of different types of nodes in the active power distribution network according to the regulated output power of the node to be regulated, the output power constraint condition, the regulated output voltage of the node to be regulated and the line voltage constraint condition;
And regulating and controlling the output power and the output voltage of different types of nodes in the active power distribution network according to the target output power and the target output voltage.
In one embodiment of the present disclosure, obtaining node correlation parameters between any two of a plurality of nodes from node sensitivity data includes:
according toAcquiring +.>Personal node and->Node dependency parameter value between individual nodes +.>；
Wherein the method comprises the steps ofIs->Output voltage variation of individual nodes, +.>Is->Output voltage variation of individual nodes, +.>Is->Node active power variation of individual nodes, < ->Is->Node active power variation of individual nodes, < ->Is->Node reactive power variation of individual nodes, +.>Is->The amount of change in the reactive power of the nodes of the individual nodes,kis the number of sampling points.
In one embodiment of the present disclosure, determining a node to be regulated corresponding to an abnormal node among a plurality of nodes according to a node correlation parameter includes:
according toDetermining +.>The nodes to be regulated and controlled correspond to the abnormal nodes;
wherein,，/>divide ∈in multiple nodes>The node correlation parameter values of any node except the nodes to be regulated and the abnormal nodes,
Is an active power distribution network middle sectionThe number of points, abnormal node +.>Nodes to be regulated and controlled->Is->And node correlation parameter values of the nodes to be regulated and the abnormal nodes.
In one embodiment of the present disclosure, regulating an output voltage of a node to be regulated includes:
according toObtaining the number of output voltage regulation step sizes;
wherein the method comprises the steps ofFor the moment before regulating the output voltage of the node to be regulated,/->For the moment after regulating the output voltage of the node to be regulated,/->The regulation time required by each step in regulating the output voltage of the node to be regulated is set;
according toObtaining regulated output voltage of a node to be regulated>；
Wherein the method comprises the steps ofFor regulating the output voltage of the node to be regulated, < ->Is a voltage regulation coefficient;
according to regulated output voltageRegulating and controlling the output voltage of the node to be regulated and controlled.
In one embodiment of the present disclosure, obtaining the regulated output power of the node to be regulated according to the regulated output voltage of the node to be regulated includes:
according toObtaining output power variation->；
Wherein the method comprises the steps ofIs abnormal node and->Impedance between the nodes to be regulated;
and obtaining the regulated output power of the node to be regulated according to the output power variation and the output power of the node to be regulated before regulation.
In one embodiment of the present disclosure, output power constraints for different types of nodes within an active power distribution network include:
；
wherein the method comprises the steps ofIs->The output power of the non-photovoltaic unit node in the active power distribution network at the moment,is->Output power of distributed photovoltaic nodes in time active power distribution network, < >>Is->Output power of energy storage device in active power distribution network at moment, < >>Is->The total power of the load of the active distribution network at the moment,is->Internal power loss of the active power distribution network at the moment;
line voltage constraints for an active power distribution network, comprising:
；
wherein the method comprises the steps ofThe minimum value of the voltage allowed for the lines of the active distribution network,/->The maximum voltage allowed for the lines of the active distribution network.
In a second aspect, in an embodiment of the present disclosure, there is provided a dynamic regulation device for an active power distribution network, where the device includes:
the sensitivity acquisition module is configured to acquire node sensitivity data of a plurality of nodes in the active power distribution network, wherein the node sensitivity data comprises an output voltage variation, a node active power variation and a node reactive power variation;
the correlation acquisition module is configured to acquire node correlation parameters between any two nodes in the plurality of nodes according to the node sensitivity data;
The node determining module is configured to determine an abnormal node in the plurality of nodes and determine a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter;
the node regulation module is configured to regulate the output voltage of the node to be regulated.
In one embodiment of the present disclosure, the apparatus further comprises:
the power regulation and control module is configured to acquire regulated output power of the node to be regulated according to regulated output voltage of the node to be regulated; obtaining output power constraint conditions of different types of nodes in an active power distribution network and line voltage constraint conditions of the active power distribution network; obtaining target output power of different types of nodes in the active power distribution network and target output voltage of different types of nodes in the active power distribution network according to the regulated output power of the node to be regulated, the output power constraint condition, the regulated output voltage of the node to be regulated and the line voltage constraint condition; and regulating and controlling the output power and the output voltage of different types of nodes in the active power distribution network according to the target output power and the target output voltage.
In one embodiment of the present disclosure, the correlation acquisition module is specifically configured to:
According toAcquiring +.>Personal node and->Node dependency parameter value between individual nodes +.>；
Wherein,is->Output voltage variation of individual nodes, +.>Is->Output voltage variation of individual nodes, +.>Is->Node active power variation of individual nodes, < ->Is->The node active power variation of each node is +.>Is->Node reactive power variation of individual nodes, +.>Is->The amount of change in the reactive power of the nodes of the individual nodes,kis the number of sampling points.
In one embodiment of the present disclosure, the node determining module is specifically configured to:
according toDetermining +.>The nodes to be regulated and controlled correspond to the abnormal nodes;
wherein,，/>divide ∈in multiple nodes>Node correlation parameter values of each node to be regulated and any node except the abnormal node and the abnormal node, < ->For the number of nodes in the active power distribution network, the abnormal node is +.>Nodes to be regulated and controlled->Is->And node correlation parameter values of the nodes to be regulated and the abnormal nodes.
In one embodiment of the present disclosure, the node regulation module is specifically configured to:
according toObtaining the number of output voltage regulation step sizes;
wherein,for the moment before regulating the output voltage of the node to be regulated,/- >For the moment after regulating the output voltage of the node to be regulated,/->The regulation time required by each step in regulating the output voltage of the node to be regulated is set;
according toObtaining regulated output voltage of a node to be regulated>WhereinFor regulating the output voltage of the node to be regulated, < ->Is a voltage regulation coefficient;
according to regulated output voltageRegulating and controlling the output voltage of the node to be regulated and controlled.
In one embodiment of the present disclosure, the power regulation control module is specifically configured to:
according toObtaining output power variation；
Wherein the method comprises the steps ofIs abnormal node and->Impedance between the nodes to be regulated;
and obtaining the regulated output power of the node to be regulated according to the output power variation and the output power of the node to be regulated before regulation.
In one embodiment of the present disclosure, output power constraints for different types of nodes within an active power distribution network include:
；
wherein,is->The output power of the non-photovoltaic unit node in the active power distribution network at the moment,is->Output power of distributed photovoltaic nodes in time active power distribution network, < >>Is->Output power of energy storage device in active power distribution network at moment, < >>Is->The total power of the load of the active distribution network at the moment, Is->Internal power loss of the active power distribution network at the moment;
line voltage constraints for an active power distribution network, comprising:
；
wherein,the minimum value of the voltage allowed for the lines of the active distribution network,/->The maximum voltage allowed for the lines of the active distribution network.
In a third aspect, an embodiment of the present disclosure provides an electronic device, including a memory and a processor, wherein the memory is configured to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the method of any one of the first aspects.
In a fourth aspect, embodiments of the present disclosure provide a computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement a method as described in the first aspect.
According to the technical scheme provided by the embodiment of the disclosure, node sensitivity data of a plurality of nodes in an active power distribution network are obtained through a fusion terminal in the active power distribution network; acquiring node correlation parameters between any two nodes in a plurality of nodes according to the node sensitivity data; determining an abnormal node in the plurality of nodes, and determining a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter; regulating and controlling the output voltage of the node to be regulated and controlled. The node correlation parameters can reflect the difference or correlation of the connection relations among different nodes, so that the node to be regulated corresponding to the abnormal node, which is determined in the nodes based on the node correlation parameters, can be understood as the node which is related with the abnormal node strongly, the output voltage of the node to be regulated is regulated, the load flow re-optimization of the active power distribution network can be facilitated, the rapid and accurate regulation of the active power distribution network can be facilitated, the full consumption can be realized, and meanwhile, the fluctuation of the node in the active power distribution network is effectively stabilized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
Other features, objects and advantages of the present disclosure will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. The following is a description of the drawings.
Fig. 1 shows a schematic block diagram of an active power distribution network according to an embodiment of the present disclosure.
Fig. 2 illustrates a flow chart of a dynamic regulation method of an active power distribution network according to an embodiment of the present disclosure.
Fig. 3 shows a block diagram of a dynamic regulation apparatus of an active power distribution network according to an embodiment of the present disclosure.
Fig. 4 shows a block diagram of an electronic device according to an embodiment of the disclosure.
Fig. 5 shows a schematic diagram of a computer system suitable for use in implementing methods according to embodiments of the present disclosure.
Detailed Description
Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. In addition, for the sake of clarity, portions irrelevant to description of the exemplary embodiments are omitted in the drawings.
In this disclosure, it should be understood that terms such as "comprises" or "comprising," etc., are intended to indicate the presence of features, numbers, steps, acts, components, portions, or combinations thereof disclosed in this specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, acts, components, portions, or combinations thereof are present or added.
In addition, it should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In the present disclosure, if an operation of acquiring user information or user data or an operation of presenting user information or user data to another person is referred to, the operations are all operations authorized, confirmed, or actively selected by the user.
With the wide access of the distributed photovoltaic nodes, the power distribution network is gradually changed from a load power grid into an active power distribution network, and the characteristics of wide points and multiple sides and large overall scale are integrally presented by combining a medium-voltage power distribution network and a low-voltage power distribution network, but the automatic regulation capability of the active power distribution network is not high, so that the active power distribution network with high permeability can safely and efficiently operate under the condition of large-scale medium-low-voltage distributed photovoltaic node access, and related work needs to be developed from the aspects of distributed photovoltaic access planning, power distribution network frame planning, secondary equipment planning cooperation, distributed photovoltaic efficient consumption, adjustable load peak clipping and valley filling cooperative control and the like.
In one embodiment provided by the present disclosure, when controlling an active power distribution network, an access isolated switch, or an island protection device may be used. The isolating switch is mainly used for isolating a circuit between the photovoltaic cell panel and the inverter and a circuit between the inverter and the power grid in the active power distribution network. In this way, it is ensured that no danger is caused to personnel and equipment during maintenance and overhaul of the photovoltaic power generation system.
Besides safety protection, in an active power distribution network, the isolating switch can also switch circuits according to requirements so as to realize adjustment and control of the system. For example, if electrical energy is to be stored in the battery, the isolation switch may switch the circuit to a battery charging mode to effect charging of the battery.
However, most of the above technologies stay in the aspect of switch protection and switching functions, and do not dynamically regulate and control the active power distribution network.
Therefore, how to dynamically regulate and control an active power distribution network to realize sufficient digestion and stabilize fluctuation of nodes in the active power distribution network is a problem to be solved in the prior art.
In order to solve the above problems, embodiments of the present disclosure provide a method, an apparatus, a device, and a medium for dynamic regulation of an active power distribution network.
According to the technical scheme provided by the embodiment of the disclosure, node sensitivity data of a plurality of nodes in an active power distribution network are obtained through a fusion terminal in the active power distribution network; acquiring node correlation parameters between any two nodes in a plurality of nodes according to the node sensitivity data; determining an abnormal node in the plurality of nodes, and determining a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter; regulating and controlling the output voltage of the node to be regulated and controlled. The node correlation parameters can reflect the difference or correlation of the connection relations among different nodes, so that the node to be regulated corresponding to the abnormal node, which is determined in the nodes based on the node correlation parameters, can be understood as the node which is related with the abnormal node strongly, the output voltage of the node to be regulated is regulated, the load flow re-optimization of the active power distribution network can be facilitated, the rapid and accurate regulation of the active power distribution network can be facilitated, the full consumption can be realized, and meanwhile, the fluctuation of the node in the active power distribution network is effectively stabilized.
Fig. 1 shows a schematic block diagram of an active power distribution network according to an embodiment of the present disclosure. As shown in fig. 1, the active power distribution network includes at least one node and a fusion terminal, wherein the node of the active power distribution network includes a transformer, a branch switch, a distributed photovoltaic, an energy storage device, a non-photovoltaic unit and the like. The fusion terminal can be understood as a control center in the platform area and is used for analyzing and collecting the output conditions of each distributed photovoltaic and non-photovoltaic unit in the platform area, analyzing and collecting the electric quantity, electric energy quality and electricity load demand conditions of each energy storage device in the platform area, comprehensively planning the resource balance conditions of each node, analyzing and calculating the distribution switch state, and regulating and controlling the distributed photovoltaic power output and the energy storage devices to realize the optimal trend of the active power distribution network. The branch switches, the distributed photovoltaic devices and the fusion terminals can communicate in a power line high-speed carrier or wireless communication mode, and the Internet of things of equipment resources in the platform area is realized.
Fig. 2 illustrates a flow chart of a dynamic regulation method of an active power distribution network according to an embodiment of the present disclosure. The dynamic regulation and control method of the active power distribution network is applied to a fusion terminal, as shown in fig. 2, and comprises the following steps S101-S104:
In step S101, node sensitivity data of a plurality of nodes in an active power distribution network is acquired.
The node sensitivity data comprises an output voltage variation, a node active power variation and a node reactive power variation.
In step S102, a node correlation parameter between any two nodes of the plurality of nodes is acquired based on the node sensitivity data.
In step S103, an abnormal node is determined among the plurality of nodes, and a node to be regulated corresponding to the abnormal node is determined among the plurality of nodes according to the node correlation parameter.
In step S104, the output voltage of the node to be regulated is regulated.
In one implementation of the present disclosure, acquiring node sensitivity data of a plurality of nodes in an active power distribution network may be understood as receiving, by a fusion terminal, the node sensitivity data sent by the plurality of nodes; the node sensitivity data of the plurality of nodes stored in advance may be read by the fusion terminal.
In one implementation of the present disclosure, acquiring a node correlation parameter between any two nodes in a plurality of nodes according to node sensitivity data may be understood as substituting the node sensitivity data of any two nodes into a calculation according to a pre-acquired algorithm to acquire the node correlation parameter between any two nodes; it may also be understood that the node sensitivity data of any two nodes is input into a pre-acquired node correlation parameter model, so as to acquire the node correlation parameters of any two nodes output by the node correlation parameter model. Wherein a node relevance parameter can be understood as a difference or relevance reflecting the contact relationship between two nodes
In one implementation of the present disclosure, an abnormal node may be understood as a node in an active power distribution network where the working state is abnormal (e.g., stop working or actively report itself in an abnormal state, etc.) or the output power quality does not meet the requirement.
In one implementation of the present disclosure, determining an abnormal node among a plurality of nodes may be understood as monitoring working states of the plurality of nodes or output electric energy in real time, and determining the abnormal node according to a real-time monitoring result; it may also be understood that abnormal node indication information sent by other devices or systems is received, and an abnormal node is determined according to the abnormal node indication information.
According to the technical scheme provided by the embodiment of the disclosure, node sensitivity data of a plurality of nodes in an active power distribution network are obtained through a fusion terminal in the active power distribution network; acquiring node correlation parameters between any two nodes in a plurality of nodes according to the node sensitivity data; determining an abnormal node in the plurality of nodes, and determining a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter; regulating and controlling the output voltage of the node to be regulated and controlled. The node correlation parameters can reflect the difference or correlation of the connection relations among different nodes, so that the node to be regulated corresponding to the abnormal node, which is determined in the nodes based on the node correlation parameters, can be understood as the node which is related with the abnormal node strongly, the output voltage of the node to be regulated is regulated, the load flow re-optimization of the active power distribution network can be facilitated, the rapid and accurate regulation of the active power distribution network can be facilitated, the full consumption can be realized, and meanwhile, the fluctuation of the node in the active power distribution network is effectively stabilized.
In one embodiment of the present disclosure, the method further comprises:
acquiring regulated output power of the node to be regulated according to the regulated output voltage of the node to be regulated;
obtaining output power constraint conditions of different types of nodes in an active power distribution network and line voltage constraint conditions of the active power distribution network;
obtaining target output power of different types of nodes in the active power distribution network and target output voltage of different types of nodes in the active power distribution network according to the regulated output power of the node to be regulated, the output power constraint condition, the regulated output voltage of the node to be regulated and the line voltage constraint condition;
and regulating and controlling the output power and the output voltage of different types of nodes in the active power distribution network according to the target output power and the target output voltage.
According to the technical scheme provided by the embodiment of the disclosure, the regulated output power of the node to be regulated is obtained according to the regulated output voltage of the node to be regulated; obtaining output power constraint conditions of different types of nodes in an active power distribution network and line voltage constraint conditions of the active power distribution network; obtaining target output power of different types of nodes in the active power distribution network and target output voltage of different types of nodes in the active power distribution network according to the regulated output power of the node to be regulated, the output power constraint condition, the regulated output voltage of the node to be regulated and the line voltage constraint condition; according to the target output power and the target output voltage, the output power and the output voltage of different types of nodes in the active power distribution network are regulated and controlled, the output power of different types of nodes in the active power distribution network and the line voltage of the active power distribution network can meet corresponding constraint conditions after regulation and control are carried out, and therefore the fact that all types of nodes in the active power distribution network and lines of the active power distribution network can work in a relatively balanced state is ensured, and the probability of faults of the active power distribution network is reduced.
In one embodiment of the present disclosure, obtaining node correlation parameters between any two of a plurality of nodes from node sensitivity data includes:
according toAcquiring +.>Personal node and->Node dependency parameter value between individual nodes +.>；
Wherein the method comprises the steps ofIs->Output voltage variation of individual nodes, +.>Is->Output voltage variation of individual nodes, +.>Is->Node active power variation of individual nodes, < ->Is->Node active power variation of individual nodes, < ->Is->Node reactive power variation of individual nodes, +.>Is->The amount of change in the reactive power of the nodes of the individual nodes,kis the number of sampling points.
The output voltage variation, the node active power variation and the node reactive power variation of each node can be acquired at K sampling points respectively.
According to the technical scheme provided by the embodiment of the disclosure, the node correlation parameter between any two nodes in the plurality of nodes is obtained through the scheme, so that the obtained node correlation parameter can be ensured to reflect the difference or the correlation of the contact relationship between any two nodes more comprehensively.
In one embodiment of the present disclosure, determining a node to be regulated corresponding to an abnormal node among a plurality of nodes according to a node correlation parameter includes:
According toDetermining +.>The nodes to be regulated and controlled correspond to the abnormal nodes;
wherein,，/>divide ∈in multiple nodes>Node correlation parameter values of each node to be regulated and any node except the abnormal node and the abnormal node, < ->For the number of nodes in the active power distribution network, the abnormal node is +.>Nodes to be regulated and controlled->Is->And node correlation parameter values of the nodes to be regulated and the abnormal nodes.
In one implementation manner of the present disclosure, before determining a node to be regulated corresponding to an abnormal node among a plurality of nodes according to a node correlation parameter, enough inter-node correlation parameters may be obtained first, and an inter-node correlation parameter matrix including all nodes in an active power distribution network may be obtained according to the inter-node correlation parameters. And the matrix is standardized, and then the node correlation parameters between any two nodes can be obtained based on the standardized matrix.
Exemplary, can be based onAcquiring the matrixAfter which the matrix can be +.>Normalizing to obtain normalized matrix ∈>Wherein。
According to the technical scheme provided by the embodiment of the disclosure, the determination in a plurality of nodes is performed through the schemeThe nodes to be regulated corresponding to the abnormal nodes can ensure that the nodes with stronger difference or correlation with the contact relation of the abnormal nodes are determined as the nodes to be regulated on the premise that the number of the determined nodes to be regulated is smaller, thereby being beneficial to reducing the processing resources required by the subsequent steps and reducing the cost.
In one embodiment of the present disclosure, regulating an output voltage of a node to be regulated includes:
according toObtaining the number of output voltage regulation step sizes, wherein +.>For the moment before regulating the output voltage of the node to be regulated, namely the moment t, the +.>For the time t+1 after the output voltage of the node to be regulated is regulated, the +.>The regulation time required by each step in regulating the output voltage of the node to be regulated is set;
according toObtaining regulated output voltage of a node to be regulated>Wherein->For regulating the output voltage of the node to be regulated, < ->Is a voltage regulation coefficient;
according to regulated output voltageRegulating and controlling the output voltage of the node to be regulated and controlled.
According to the technical scheme provided by the embodiment of the disclosure, the regulated output voltage is obtained through the scheme, and the output voltage of the node to be regulated is regulated according to the regulated output voltage, so that the regulated scheme can be refined, the regulation difficulty is reduced, and the user experience is improved.
In one embodiment of the present disclosure, obtaining the regulated output power of the node to be regulated according to the regulated output voltage of the node to be regulated includes:
according toObtaining output power variation- >；
Wherein the method comprises the steps ofIs abnormal node and->Impedance between the nodes to be regulated;
and obtaining the regulated output power of the node to be regulated according to the output power variation and the output power of the node to be regulated before regulation.
According to the technical scheme provided by the embodiment of the disclosure, the regulated output power of the node to be regulated is obtained through the scheme, and the regulated output power of the node to be regulated is obtained according to the output power variation and the output power of the node to be regulated before regulation, so that the obtained regulated output power has higher accuracy.
In one embodiment of the present disclosure, output power constraints for different types of nodes within an active power distribution network include:
；
wherein the method comprises the steps ofIs->The output power of the non-photovoltaic unit node in the active power distribution network at the moment,is->Output power of distributed photovoltaic nodes in time active power distribution network, < >>Is->Output power of energy storage device in active power distribution network at moment, < >>Is->The total power of the load of the active distribution network at the moment,is->Internal power loss of the active power distribution network at the moment;
line voltage constraints for an active power distribution network, comprising:
；
wherein the method comprises the steps ofThe minimum value of the voltage allowed for the lines of the active distribution network,/- >The maximum voltage allowed for the lines of the active distribution network.
According to the technical scheme provided by the embodiment of the disclosure, the output power of the different types of nodes in the active power distribution network and the line voltage of the active power distribution network are constrained through the scheme, so that the constraint scheme can be simplified on the premise of not reducing the constraint effect, and the probability of faults of the active power distribution network is reduced by ensuring that each type of node in the active power distribution network and the line of the active power distribution network after the regulation can stably work in a relatively balanced state when the output power and the output voltage of the different types of nodes in the active power distribution network are regulated and controlled.
Fig. 3 shows a block diagram of a dynamic regulation apparatus of an active power distribution network according to an embodiment of the present disclosure. The apparatus may be implemented as part or all of an electronic device by software, hardware, or a combination of both.
As shown, the dynamic regulation device 200 of the active power distribution network includes:
the sensitivity acquisition module is configured to acquire node sensitivity data of a plurality of nodes in the active power distribution network, wherein the node sensitivity data comprises an output voltage variation, a node active power variation and a node reactive power variation;
The correlation acquisition module is configured to acquire node correlation parameters between any two nodes in the plurality of nodes according to the node sensitivity data;
the node determining module is configured to determine an abnormal node in the plurality of nodes and determine a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter;
the node regulation module is configured to regulate the output voltage of the node to be regulated.
In one embodiment of the present disclosure, the dynamic regulation device 200 further includes a power regulation module;
a power regulation module configured to:
acquiring regulated output power of the node to be regulated according to the regulated output voltage of the node to be regulated; obtaining output power constraint conditions of different types of nodes in an active power distribution network and line voltage constraint conditions of the active power distribution network;
obtaining target output power of different types of nodes in the active power distribution network and target output voltage of different types of nodes in the active power distribution network according to the regulated output power of the node to be regulated, the output power constraint condition, the regulated output voltage of the node to be regulated and the line voltage constraint condition;
and regulating and controlling the output power and the output voltage of different types of nodes in the active power distribution network according to the target output power and the target output voltage.
In one embodiment of the present disclosure, the correlation acquisition module is specifically configured to:
according toAcquiring +.>The individual nodeNodes between individual nodesCorrelation parameter value->；
Wherein the method comprises the steps ofIs->Output voltage variation of individual nodes, +.>Is->Output voltage variation of individual nodes, +.>Is->Node active power variation of individual nodes, < ->Is->Node active power variation of individual nodes, < ->Is->Node reactive power variation of individual nodes, +.>Is->The amount of change in the reactive power of the nodes of the individual nodes,kis the number of sampling points.
In one embodiment of the present disclosure, the node determining module is specifically configured to:
according toDetermining +.>The nodes to be regulated and controlled correspond to the abnormal nodes;
wherein,divide ∈in multiple nodes>Node correlation parameter values of each node to be regulated and any node except the abnormal node and the abnormal node, < ->For the number of nodes in the active power distribution network, the abnormal node is +.>Nodes to be regulated and controlled->Is->And node correlation parameter values of the nodes to be regulated and the abnormal nodes.
In one embodiment of the present disclosure, the node regulation module is specifically configured to:
According toObtaining the number of output voltage regulation step sizes; />
Wherein the method comprises the steps ofFor the moment before regulating the output voltage of the node to be regulated,/->To treat and regulateTime after the output voltage of the node is regulated, < ->The regulation time required by each step in regulating the output voltage of the node to be regulated is set;
according toObtaining regulated output voltage of a node to be regulated>；
Wherein the method comprises the steps ofFor regulating the output voltage of the node to be regulated, < ->Is a voltage regulation coefficient;
according to regulated output voltageRegulating and controlling the output voltage of the node to be regulated and controlled.
In one embodiment of the present disclosure, the power regulation module is specifically configured to:
according toObtaining output power variation->；
Wherein the method comprises the steps ofIs abnormal node and->Impedance between the nodes to be regulated;
and obtaining the regulated output power of the node to be regulated according to the output power variation and the output power of the node to be regulated before regulation.
In one embodiment of the present disclosure, output power constraints for different types of nodes within an active power distribution network include:
；
wherein the method comprises the steps ofIs->The output power of the non-photovoltaic unit node in the active power distribution network at the moment,is->Output power of distributed photovoltaic nodes in time active power distribution network, < > >Is->Output power of energy storage device in active power distribution network at moment, < >>Is->The total power of the load of the active distribution network at the moment,is->Internal power loss of the active power distribution network at the moment;
line voltage constraints for an active power distribution network, comprising:
；
wherein the method comprises the steps ofThe minimum value of the voltage allowed for the lines of the active distribution network,/->The maximum voltage allowed for the lines of the active distribution network.
In one implementation of the present disclosure, the output power constraint conditions of different types of nodes in the active power distribution network may further include:
；/>
wherein,the input power fluctuation rate of the line of the active power distribution network can be understood as a normalized measure of the degree of dispersion of the probability distribution; />Standard deviation of sample>Is the input power variation of the lines of the active distribution network,for the input power fluctuation rate threshold, +.>Is->The input power of the lines of the active distribution network at the moment is sampled,is->The input power sampling value of the circuit of the active power distribution network at the moment;
output power of distributed photovoltaic nodes in active power distribution network for ith data sampling point,/for>Output power of energy storage equipment in active power distribution network for ith data sampling point, +.>For the total power of the load of the active power distribution network of the ith data sampling point, < > >The internal power loss of the active power distribution network is the ith data sampling point;
can be obtained by the following formula:
；
wherein,for the time period from time t to time t +1, the input power of the lines of the active distribution network is sampled,for the average value of the input power of the lines of the active distribution network in the time period from time t to time t+1,/and/or>Is the upper limit of the number of sampling points.
Based on the output power constraint condition, the input power fluctuation rate of the line of the active power distribution network can be ensuredMeets the set value, and minimizes the power input by the conventional unit, thereby realizing the maximum utilization of new energy power generation.
According to the technical scheme provided by the embodiment of the disclosure, node sensitivity data of a plurality of nodes in an active power distribution network are obtained through a fusion terminal in the active power distribution network; acquiring node correlation parameters between any two nodes in a plurality of nodes according to the node sensitivity data; determining an abnormal node in the plurality of nodes, and determining a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter; regulating and controlling the output voltage of the node to be regulated and controlled. The node correlation parameters can reflect the difference or correlation of the connection relations among different nodes, so that the node to be regulated corresponding to the abnormal node, which is determined in the nodes based on the node correlation parameters, can be understood as the node which is related with the abnormal node strongly, the output voltage of the node to be regulated is regulated, the load flow re-optimization of the active power distribution network can be facilitated, the rapid and accurate regulation of the active power distribution network can be facilitated, the full consumption can be realized, and meanwhile, the fluctuation of the node in the active power distribution network is effectively stabilized.
The present disclosure also discloses an electronic device, and fig. 4 shows a block diagram of the electronic device according to an embodiment of the present disclosure.
As shown in fig. 4, the electronic device includes a memory and a processor, wherein the memory is configured to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement a method according to an embodiment of the present disclosure.
In a first aspect, an embodiment of the present disclosure provides a dynamic regulation method for an active power distribution network, where the method is applied to a fusion terminal in the active power distribution network, and the method includes:
node sensitivity data of a plurality of nodes in the active power distribution network are obtained, wherein the node sensitivity data comprise output voltage variation, node active power variation and node reactive power variation;
acquiring node correlation parameters between any two nodes in a plurality of nodes according to the node sensitivity data;
determining an abnormal node in the plurality of nodes, and determining a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter;
regulating and controlling the output voltage of the node to be regulated and controlled.
In one embodiment of the present disclosure, the method further comprises:
Acquiring regulated output power of the node to be regulated according to the regulated output voltage of the node to be regulated;
obtaining output power constraint conditions of different types of nodes in an active power distribution network and line voltage constraint conditions of the active power distribution network;
obtaining target output power of different types of nodes in the active power distribution network and target output voltage of different types of nodes in the active power distribution network according to the regulated output power of the node to be regulated, the output power constraint condition, the regulated output voltage of the node to be regulated and the line voltage constraint condition;
and regulating and controlling the output power and the output voltage of different types of nodes in the active power distribution network according to the target output power and the target output voltage.
In one embodiment of the present disclosure, obtaining node correlation parameters between any two of a plurality of nodes from node sensitivity data includes:
according toAcquiring +.>Personal node and->Node dependency parameter value between individual nodes +.>；
Wherein the method comprises the steps ofIs->Output voltage variation of individual nodes, +.>Is->Output voltage variation of individual nodes, +.>Is->Node active power variation of individual nodes, < ->Is->Node active power variation of individual nodes, < - >Is->Node reactive power variation of individual nodes, +.>Is->The amount of change in the reactive power of the nodes of the individual nodes,kis the number of sampling points.
In one embodiment of the present disclosure, determining a node to be regulated corresponding to an abnormal node among a plurality of nodes according to a node correlation parameter includes:
according toDetermining +.>The nodes to be regulated and controlled correspond to the abnormal nodes;
wherein,divide ∈in multiple nodes>Node correlation parameter values of each node to be regulated and any node except the abnormal node and the abnormal node, < ->For the number of nodes in the active power distribution network, the abnormal node is +.>Nodes to be regulated and controlled->Is->And node correlation parameter values of the nodes to be regulated and the abnormal nodes.
In one embodiment of the present disclosure, regulating an output voltage of a node to be regulated includes:
according toObtaining the number of output voltage regulation step sizes; />
Wherein the method comprises the steps ofFor the moment before regulating the output voltage of the node to be regulated,/->For the moment after regulating the output voltage of the node to be regulated,/->For regulating each of the output voltages of the nodes to be regulatedThe regulation time required by the step length;
according toObtaining regulated output voltage of a node to be regulated >；
Wherein the method comprises the steps ofFor regulating the output voltage of the node to be regulated, < ->Is a voltage regulation coefficient;
according to regulated output voltageRegulating and controlling the output voltage of the node to be regulated and controlled.
In one embodiment of the present disclosure, obtaining the regulated output power of the node to be regulated according to the regulated output voltage of the node to be regulated includes:
according toObtaining output power variation；
Wherein the method comprises the steps ofIs abnormal node and->Impedance between the nodes to be regulated;
and obtaining the regulated output power of the node to be regulated according to the output power variation and the output power of the node to be regulated before regulation.
In one embodiment of the present disclosure, output power constraints for different types of nodes within an active power distribution network include:
；
wherein the method comprises the steps ofIs->Output power of non-photovoltaic unit node in active power distribution network at moment, < >>Is->Output power of distributed photovoltaic nodes in time active power distribution network, < >>Is->Output power of energy storage device in active power distribution network at moment, < >>Is->Total power of load of active distribution network at moment, +.>Is thatInternal power loss of the active power distribution network at the moment;
line voltage constraints for an active power distribution network, comprising:
；
wherein the method comprises the steps ofThe minimum value of the voltage allowed for the lines of the active distribution network,/- >The maximum voltage allowed for the lines of the active distribution network. Fig. 5 shows a schematic diagram of a computer system suitable for use in implementing methods according to embodiments of the present disclosure.
As shown in fig. 5, the computer system includes a processing unit that can execute the various methods in the above embodiments according to a program stored in a Read Only Memory (ROM) or a program loaded from a storage section into a Random Access Memory (RAM). In the RAM, various programs and data required for the operation of the computer system are also stored. The processing unit, ROM and RAM are connected to each other by a bus. An input/output (I/O) interface is also connected to the bus.
The following components are connected to the I/O interface: an input section including a keyboard, a mouse, etc.; an output section including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), etc., and a speaker, etc.; a storage section including a hard disk or the like; and a communication section including a network interface card such as a LAN card, a modem, and the like. The communication section performs a communication process via a network such as the internet. The drives are also connected to the I/O interfaces as needed. Removable media such as magnetic disks, optical disks, magneto-optical disks, semiconductor memories, and the like are mounted on the drive as needed so that a computer program read therefrom is mounted into the storage section as needed. The processing unit may be implemented as a processing unit such as CPU, GPU, TPU, FPGA, NPU.
In particular, according to embodiments of the present disclosure, the methods described above may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program comprising program code for performing the method described above. In such embodiments, the computer program may be downloaded and installed from a network via a communication portion, and/or installed from a removable medium.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units or modules referred to in the embodiments of the present disclosure may be implemented in software or in programmable hardware. The units or modules described may also be provided in a processor, the names of which in some cases do not constitute a limitation of the unit or module itself.
As another aspect, the present disclosure also provides a computer-readable storage medium, which may be a computer-readable storage medium included in the electronic device or the computer system in the above-described embodiments; or may be a computer-readable storage medium, alone, that is not assembled into a device. The computer-readable storage medium stores one or more programs for use by one or more processors in performing the methods described in the present disclosure.
The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention referred to in this disclosure is not limited to the specific combination of features described above, but encompasses other embodiments in which any combination of features described above or their equivalents is contemplated without departing from the inventive concepts described. Such as those described above, are mutually substituted with the technical features having similar functions disclosed in the present disclosure (but not limited thereto).
Claims (16)
1. The dynamic regulation and control method for the active power distribution network is characterized by being applied to a fusion terminal in the active power distribution network, and comprises the following steps:
acquiring node sensitivity data of a plurality of nodes in the active power distribution network, wherein the node sensitivity data comprise output voltage variation, node active power variation and node reactive power variation;
acquiring node correlation parameters between any two nodes in the plurality of nodes according to the node sensitivity data;
determining an abnormal node in the plurality of nodes, and determining a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter;
and regulating and controlling the output voltage of the node to be regulated and controlled.
2. The method for dynamic regulation of an active power distribution network of claim 1, further comprising:
acquiring regulated output power of the node to be regulated according to the regulated output voltage of the node to be regulated;
obtaining output power constraint conditions of different types of nodes in the active power distribution network and line voltage constraint conditions of the active power distribution network;
acquiring target output power of different types of nodes in the active power distribution network and target output voltage of different types of nodes in the active power distribution network according to the regulated output power of the node to be regulated, the output power constraint condition, the regulated output voltage of the node to be regulated and the line voltage constraint condition;
And regulating and controlling the output power and the output voltage of different types of nodes in the active power distribution network according to the target output power and the target output voltage.
3. The method for dynamic regulation and control of an active power distribution network according to claim 2, wherein the obtaining node correlation parameters between any two nodes of the plurality of nodes according to the node sensitivity data comprises:
according toAcquiring +.>Personal node and->Node dependency parameter value between individual nodes +.>；
Wherein,for the->Output voltage variation of individual nodes, +.>For the->Output voltage variation of individual nodes, +.>For the->Node active power variation of individual nodes, < ->For the->Node active power variation of individual nodes, < ->For the->Node reactive power variation of individual nodes, +.>For the->The amount of change in the reactive power of the nodes of the individual nodes,kis the number of sampling points.
4. A method of dynamic regulation of an active power distribution network according to claim 3, wherein determining a node to be regulated among the plurality of nodes corresponding to the abnormal node according to the node correlation parameter comprises:
According toDetermining +.>The nodes to be regulated and controlled correspond to the abnormal nodes;
wherein,divide +.>Node correlation parameter values of any node except the nodes to be regulated and the abnormal nodes, and +.>For the number of nodes in the active power distribution network, the abnormal node is +.>Nodes to be regulated and controlled->Is->And node correlation parameter values of the nodes to be regulated and the abnormal nodes.
5. The method for dynamically controlling an active power distribution network according to claim 4, wherein controlling the output voltage of the node to be controlled comprises:
according toObtaining the number of output voltage regulation step sizes;
wherein,in order to regulate the output voltage of the node to be regulated, the time before regulating is carried out is +.>In order to regulate the output voltage of the node to be regulated, the time is +.>The regulation time required by each step in regulation of the output voltage of the node to be regulated is set; according to->Obtaining the regulated output voltage of the node to be regulated>Wherein->For regulating the output voltage of the node to be regulated, the voltage is +.>Is a voltage regulation coefficient; according to the regulated output voltage +. >And regulating and controlling the output voltage of the node to be regulated and controlled.
6. The method for dynamically adjusting and controlling an active power distribution network according to claim 5, wherein the step of obtaining the adjusted and controlled output power of the node to be adjusted according to the adjusted and controlled output voltage of the node to be adjusted comprises the steps of:
according toObtaining output power variation->；
Wherein the method comprises the steps ofFor the abnormal node and +>Impedance between the nodes to be regulated;
and acquiring regulated output power of the node to be regulated according to the output power variation and the output power of the node to be regulated before regulation.
7. The method for dynamic regulation of an active power distribution network according to claim 6, wherein the output power constraints of different types of nodes in the active power distribution network include:
；
wherein,the output power of the non-photovoltaic unit node in the active power distribution network is obtained at the moment,is->Output power of distributed photovoltaic nodes in the active power distribution network at moment, < >>Is->The output power of the energy storage device in the active distribution network at the moment,/->Is->Moment in time the total power of the load of the active distribution network, < >>Is->Internal power loss of the active power distribution network at the moment;
the line voltage constraint condition of the active power distribution network comprises:
；
Wherein,the minimum value of the voltage allowed for the lines of the active distribution network,/->The maximum voltage allowed for the lines of the active distribution network.
8. A dynamic regulation device for an active power distribution network, the device comprising:
the sensitivity acquisition module is configured to acquire node sensitivity data of a plurality of nodes in the active power distribution network, wherein the node sensitivity data comprises an output voltage variation, a node active power variation and a node reactive power variation;
the correlation acquisition module is configured to acquire node correlation parameters between any two nodes in the plurality of nodes according to the node sensitivity data;
the node determining module is configured to determine an abnormal node in the plurality of nodes and determine a node to be regulated and controlled corresponding to the abnormal node in the plurality of nodes according to the node correlation parameter;
and the node regulation module is configured to regulate the output voltage of the node to be regulated.
9. The dynamic regulation device of an active power distribution network of claim 8, wherein the device further comprises:
a power regulation control module configured to:
acquiring regulated output power of the node to be regulated according to the regulated output voltage of the node to be regulated;
Obtaining output power constraint conditions of different types of nodes in the active power distribution network and line voltage constraint conditions of the active power distribution network;
acquiring target output power of different types of nodes in the active power distribution network and target output voltage of different types of nodes in the active power distribution network according to the regulated output power of the node to be regulated, the output power constraint condition, the regulated output voltage of the node to be regulated and the line voltage constraint condition;
and regulating and controlling the output power and the output voltage of different types of nodes in the active power distribution network according to the target output power and the target output voltage.
10. The dynamic regulation device of an active power distribution network according to claim 9, wherein the correlation acquisition module is specifically configured to:
according toAcquiring +.>Personal node and->Node dependency parameter value between individual nodes +.>；
Wherein,for the->Output voltage variation of individual nodes, +.>For the->Output voltage variation of individual nodes, +.>For the->Node active power variation of individual nodes, < ->For the->Node active power variation of individual nodes, < - >For the->Node reactive power variation of individual nodes, +.>For the->The amount of change in the reactive power of the nodes of the individual nodes,kis the number of sampling points.
11. The dynamic regulation device of an active power distribution network according to claim 10, wherein the node determination module is specifically configured to:
according toDetermining +.>And the abnormal sectionNodes to be regulated and controlled corresponding to the points;
wherein,，/>divide +.>Node correlation parameter values of any node except the nodes to be regulated and the abnormal nodes, and +.>For the number of nodes in the active power distribution network, the abnormal node is +.>Nodes to be regulated and controlled->Is->And node correlation parameter values of the nodes to be regulated and the abnormal nodes.
12. The dynamic regulation device of an active power distribution network of claim 11, wherein the node regulation module is specifically configured to:
according toObtaining the number of output voltage regulation step sizes;
wherein,in order to regulate the output voltage of the node to be regulated, the time before regulating is carried out is +.>In order to regulate the output voltage of the node to be regulated, the time is +. >The regulation time required by each step in regulation of the output voltage of the node to be regulated is set;
according toObtaining the regulated output voltage of the node to be regulated>Wherein->For regulating the output voltage of the node to be regulated, the voltage is +.>Is a voltage regulation coefficient;
according to the regulated output voltageAnd regulating and controlling the output voltage of the node to be regulated and controlled.
13. The dynamic regulation device of an active power distribution network of claim 12, wherein the power regulation control module is specifically configured to:
according toObtaining output power variation；
Wherein the method comprises the steps ofFor the abnormal node and +>Impedance between the nodes to be regulated;
and acquiring regulated output power of the node to be regulated according to the output power variation and the output power of the node to be regulated before regulation.
14. The dynamic regulation device of an active power distribution network of claim 13, wherein the output power constraints of different types of nodes within the active power distribution network include:
；
wherein,is->Output power of non-photovoltaic unit nodes in the active power distribution network at moment, < >>Is->Output power of distributed photovoltaic nodes in the active power distribution network at moment, < > >Is->The output power of the energy storage device in the active distribution network at the moment,/->Is->Moment in time the total power of the load of the active distribution network, < >>Is->Internal power loss of the active power distribution network at the moment;
the line voltage constraint condition of the active power distribution network comprises:
；
wherein,the minimum value of the voltage allowed for the lines of the active distribution network,/->The maximum voltage allowed for the lines of the active distribution network.
15. An electronic device comprising a memory and a processor; wherein the memory is for storing one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the method steps of any of claims 1-7.
16. A computer readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the method steps of any of claims 1-7.
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| CN112039080A (en) * | 2020-07-09 | 2020-12-04 | 国网山东省电力公司东营供电公司 | Garden energy differentiation scheduling method and system based on Monte Carlo simulation |
| CN114204599A (en) * | 2021-12-14 | 2022-03-18 | 广东电网有限责任公司 | Distributed energy storage stationing operation control method for inhibiting voltage fluctuation of power distribution network |
| CN114123213A (en) * | 2022-01-24 | 2022-03-01 | 武汉大学 | Space-time power balancing method and system for power grid |
| CN115940120A (en) * | 2022-03-29 | 2023-04-07 | 国网上海市电力公司 | Master-slave self-healing control method and system based on power distribution network state evaluation |
| CN114977155A (en) * | 2022-03-31 | 2022-08-30 | 广东电网有限责任公司广州供电局 | Distribution system operation flexibility improving method based on operation flexibility price guidance |
| CN114884069A (en) * | 2022-05-27 | 2022-08-09 | 广东电网有限责任公司 | Method, device, equipment and storage medium for identifying voltage weak points of power distribution network |
| CN115021272A (en) * | 2022-06-27 | 2022-09-06 | 南京南瑞继保电气有限公司 | Active power distribution network overvoltage control system and method |
| CN115173403A (en) * | 2022-07-07 | 2022-10-11 | 国网河北省电力有限公司经济技术研究院 | Distributed voltage control method and device for active power distribution network and terminal equipment |
| CN115313397A (en) * | 2022-07-25 | 2022-11-08 | 国网湖北省电力有限公司电力科学研究院 | Voltage local control method based on intelligent soft switch |
| CN115276091A (en) * | 2022-08-10 | 2022-11-01 | 杭州东华电力设备有限公司 | Distributed power supply voltage control method based on all-pure-function embedded voltage sensitivity |
| CN115912372A (en) * | 2022-11-30 | 2023-04-04 | 国网四川省电力公司电力科学研究院 | Voltage control method and system for distribution network with high-proportion distributed photovoltaic access |
| CN116388153A (en) * | 2023-03-08 | 2023-07-04 | 国网上海市电力公司 | Optimal configuration method for flexible interconnection equipment in active power distribution network |
| CN116882105A (en) * | 2023-05-31 | 2023-10-13 | 贵州电网有限责任公司 | Method for analyzing boundaries of power supply modes of large-scale photovoltaic access AC/DC power distribution network |
| CN117458585A (en) * | 2023-10-23 | 2024-01-26 | 国网浙江省电力有限公司杭州供电公司 | Method and system for adjusting power generation power of active power distribution network |
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