CN111859585B - Transmission and distribution cooperative equipment bearing capacity calculation method and system - Google Patents
Transmission and distribution cooperative equipment bearing capacity calculation method and system Download PDFInfo
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- CN111859585B CN111859585B CN202010638843.XA CN202010638843A CN111859585B CN 111859585 B CN111859585 B CN 111859585B CN 202010638843 A CN202010638843 A CN 202010638843A CN 111859585 B CN111859585 B CN 111859585B
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Abstract
The invention discloses a calculation method for bearing capacity of equipment in transmission and distribution coordination, which comprises the steps of acquiring trunk path equipment from a distribution network access point to a root feeder node according to a distribution network model and a distribution network flow direction; acquiring boundary connection equipment of the power transmission network and the power distribution network according to the mapping relation between the root feeder node and the power transmission network equipment; acquiring main path equipment from the boundary connecting equipment to a main transformer of the power transmission network according to the power transmission network model and the power transmission network tide direction; based on historical data, acquiring a power flow transfer condition after an expected failure of associated equipment of a main transformer of the power transmission network; and calculating the bearing capacity of the main path equipment from the power distribution network access point to the transmission network main transformer. A corresponding system is also disclosed. The invention integrates the multi-source information of the transmission and distribution network, realizes the transmission and distribution cooperative calculation of the bearing capacity of the equipment on the premise of considering the power flow transfer of the transmission network, obtains the bearing capacity of the equipment from the access point of the distribution network to the 220KV high-voltage transmission network, and improves the accuracy.
Description
Technical Field
The invention relates to a method and a system for calculating the bearing capacity of equipment in transmission and distribution coordination, and belongs to the field of power system dispatching automation.
Background
With the continuous development of economic construction, the demand of social electricity consumption is continuously increased, but newly-built transformer substations are increasingly difficult, underground passages of newly-built feeder lines are increasingly expensive, more and more attention is paid to fully utilizing the residual power supply capacity of a power grid, and the analysis of the power supply potential of each element of a power distribution network at the current load level, namely the calculation of the bearing capacity of equipment, is urgently needed on the premise of meeting the safety of the whole network N-1. The existing equipment bearing capacity calculation mode is simple, manual estimation is mostly carried out by means of experience of field workers, power flow transfer of a power transmission network is not considered, and accuracy is low.
Disclosure of Invention
The invention provides a method and a system for calculating the bearing capacity of equipment in transmission and distribution coordination, which solve the problems disclosed in the background technology.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for calculating the carrying capacity of equipment in transmission and distribution coordination comprises the following steps,
acquiring trunk path equipment from a power distribution network access point to a root feeder node according to the power distribution network model and the power distribution network flow direction;
acquiring boundary connection equipment of the power transmission network and the power distribution network according to the mapping relation between the root feeder node and the power transmission network equipment;
Acquiring main path equipment from the boundary connecting equipment to a main transformer of the power transmission network according to the power transmission network model and the power transmission network tide direction;
based on historical data, acquiring a power flow transfer condition after an expected failure of associated equipment of a main transformer of the power transmission network;
and calculating the bearing capacity of the main path equipment from the power distribution network access point to the transmission network main transformer according to the load flow transfer condition, the main path equipment from the power distribution network access point to the root feeder node and the main path equipment from the boundary connecting equipment to the transmission network main transformer.
According to the distribution network model and the distribution network trend direction, main path equipment from a distribution network access point to a root feeder node is obtained,
acquiring a connection relation between a power distribution network access point and power distribution network equipment according to the power distribution network model;
and searching to a root feeder line node from the power distribution network access point in the direction opposite to the power distribution network flow direction according to the connection relation between the power distribution network devices, and obtaining a trunk path device from the power distribution network access point to the root feeder line node.
According to the power transmission network model and the power transmission network tide direction, main path equipment from the boundary connecting equipment to a main transformer of the power transmission network is obtained,
acquiring a connection relation between transmission network equipment according to the transmission network model;
And searching from the boundary connecting equipment to the main transformer of the power transmission network in the direction opposite to the power flow direction of the power transmission network according to the connection relation between the power transmission network equipment, and acquiring the main path equipment from the boundary connecting equipment to the main transformer of the power transmission network.
The bearing capacity of the equipment is equal to the rated capacity of the equipment minus the maximum measurement of the equipment after the tidal current transfer.
A transportation and distribution cooperative equipment carrying capacity computing system comprises,
distribution network equipment analysis module: acquiring trunk path equipment from a power distribution network access point to a root feeder node according to the power distribution network model and the power distribution network flow direction;
boundary connection device analysis module: acquiring boundary connection equipment of the power transmission network and the power distribution network according to the mapping relation between the root feeder node and the power transmission network equipment;
the power transmission network equipment analysis module: acquiring main path equipment from the boundary connecting equipment to a main transformer of the power transmission network according to the power transmission network model and the power transmission network tide direction;
n-1 analysis Module: based on historical data, acquiring a power flow transfer condition after an expected failure of associated equipment of a main transformer of the power transmission network;
a bearing capacity calculation module: and calculating the bearing capacity of the main path equipment from the power distribution network access point to the transmission network main transformer according to the load flow transfer condition, the main path equipment from the power distribution network access point to the root feeder node and the main path equipment from the boundary connecting equipment to the transmission network main transformer.
The power distribution network equipment analysis module comprises a power distribution network equipment analysis module,
the power distribution network connection relation acquisition module: acquiring a connection relation between a power distribution network access point and power distribution network equipment according to the power distribution network model;
distribution network equipment acquisition module: and searching to a root feeder line node from the power distribution network access point in the direction opposite to the power distribution network flow direction according to the connection relation between the power distribution network devices, and obtaining a trunk path device from the power distribution network access point to the root feeder line node.
The grid equipment analysis module includes a data analysis module,
a power transmission network connection relation acquisition module: acquiring a connection relation between transmission network equipment according to the transmission network model;
transmission network equipment acquisition module: and searching from the boundary connecting equipment to the main transformer of the power transmission network in the direction opposite to the power flow direction of the power transmission network according to the connection relation between the power transmission network equipment, and acquiring the main path equipment from the boundary connecting equipment to the main transformer of the power transmission network.
The bearing capacity of the equipment is equal to the rated capacity of the equipment minus the maximum measurement of the equipment after the tidal current is transferred.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a delivery and distribution coordinated device bearer capability calculation method.
A computing device comprising one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing a delivery and distribution coordinated device bearer capability calculation method.
The invention achieves the following beneficial effects: the invention integrates the multi-source information of the transmission and distribution network, realizes the transmission and distribution cooperative calculation of the bearing capacity of the equipment on the premise of considering the power flow transfer of the transmission network, obtains the bearing capacity of the equipment from the access point of the distribution network to the 220KV high-voltage transmission network, and improves the accuracy.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a method for calculating the carrying capacity of a device in coordination of transmission and distribution includes the following steps:
step 1, acquiring a power distribution network model from a power distribution network dispatching automation system, and acquiring trunk path equipment from a power distribution network access point to 10kV feeder line nodes according to the power distribution network model and the power distribution network power flow direction.
The specific process is as follows:
11) acquiring a connection relation between a power distribution network access point and power distribution network equipment according to the power distribution network model;
12) and searching to 10kV feeder line nodes from the power distribution network access point in the reverse direction of the power distribution network power flow according to the connection relation between the power distribution network devices, and obtaining trunk path devices from the power distribution network access point to the 10kV feeder line nodes.
And 2, acquiring a mapping relation between the 10kV feeder nodes and the transmission network 10kV line equipment from the transmission network dispatching automation system, and acquiring boundary connection equipment of the transmission network and the distribution network according to the mapping relation.
And 3, acquiring a power transmission network model from the power transmission network dispatching automation system, and acquiring main path equipment from the boundary connecting equipment to a 220kV main transformer of the power transmission network according to the power transmission network model and the power transmission network flow direction.
The specific process is as follows:
31) acquiring a connection relation between transmission network equipment according to the transmission network model;
32) and searching to the 220kV main transformer of the transmission network from the boundary connecting equipment in the direction opposite to the power flow direction of the transmission network according to the connection relation between the transmission network equipment, and obtaining main path equipment from the boundary connecting equipment to the 220kV main transformer of the transmission network.
And 4, performing N-1 analysis based on the historical data, namely acquiring the power flow transfer condition after the expected failure of the associated equipment of the main transformer of the power transmission network based on the historical data.
And 5, calculating the bearing capacity of the main path equipment from the power distribution network access point to the transmission network main transformer according to the load flow transfer condition, the main path equipment from the power distribution network access point to the root feeder node and the main path equipment from the boundary connecting equipment to the transmission network main transformer.
The bearing capacity of the equipment is equal to the rated capacity of the equipment minus the maximum measurement of the equipment after the tidal current transfer, and the bearing capacity of the equipment comprises the bearing capacity of a feeder line, a feeder line section and a main transformer.
And 6, comparing the bearing capacities of all the devices, and recording the minimum bearing capacity as the bearing capacity of the power distribution network access point.
The method integrates the multi-source information of the transmission and distribution network, realizes the transmission and distribution cooperative calculation of the bearing capacity of the equipment on the premise of considering the power flow transfer of the transmission network, obtains the bearing capacity of the equipment from the access point of the distribution network to the 220KV high-voltage transmission network, and improves the accuracy.
A transportation and distribution cooperative equipment carrying capacity computing system comprises,
distribution network equipment analysis module: and acquiring trunk path equipment from the power distribution network access point to the root feeder node according to the power distribution network model and the power distribution network flow direction.
Distribution network equipment analysis module includes:
the power distribution network connection relation acquisition module: acquiring a connection relation between a power distribution network access point and power distribution network equipment according to the power distribution network model;
Distribution network equipment acquisition module: and searching to a root feeder line node from the power distribution network access point in the direction opposite to the power distribution network flow direction according to the connection relation between the power distribution network devices, and obtaining a trunk path device from the power distribution network access point to the root feeder line node.
Boundary connection device analysis module: and acquiring boundary connection equipment of the transmission network and the distribution network according to the mapping relation between the root feeder node and the transmission network equipment.
The power transmission network equipment analysis module: and acquiring main path equipment from the boundary connecting equipment to a main transformer of the power transmission network according to the power transmission network model and the power transmission network flow direction.
The power transmission network equipment analysis module comprises:
a power transmission network connection relation acquisition module: acquiring a connection relation between transmission network equipment according to the transmission network model;
transmission network equipment acquisition module: and searching from the boundary connecting equipment to the main transformer of the power transmission network in the direction opposite to the power flow direction of the power transmission network according to the connection relation between the power transmission network equipment, and acquiring the main path equipment from the boundary connecting equipment to the main transformer of the power transmission network.
N-1 analysis Module: and acquiring the power flow transfer condition after the anticipated failure of the main transformer associated equipment of the power transmission network based on the historical data.
A bearing capacity calculation module: calculating the bearing capacity of the main path equipment from the power distribution network access point to the transmission network main transformer according to the load flow transfer condition, the main path equipment from the power distribution network access point to the root feeder node and the main path equipment from the boundary connecting equipment to the transmission network main transformer; wherein the bearing capacity of the equipment is equal to the rated capacity of the equipment minus the maximum measurement of the equipment after the tidal current transfer.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a delivery and distribution coordinated device bearer capability calculation method.
A computing device comprising one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising instructions for performing a delivery and distribution coordinated device bearer capability calculation method.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention are included in the scope of the claims of the present invention as filed.
Claims (8)
1. A method for calculating the bearing capacity of equipment with transmission and distribution coordination is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
Acquiring trunk path equipment from a power distribution network access point to a root feeder node according to the power distribution network model and the power distribution network flow direction;
acquiring boundary connection equipment of the power transmission network and the power distribution network according to the mapping relation between the root feeder node and the power transmission network equipment;
acquiring main path equipment from the boundary connecting equipment to a main transformer of the power transmission network according to the power transmission network model and the power transmission network tide direction;
based on historical data, acquiring a power flow transfer condition after an expected failure of associated equipment of a main transformer of the power transmission network;
calculating the bearing capacity of the main path equipment from the power distribution network access point to the transmission network main transformer according to the load flow transfer condition, the main path equipment from the power distribution network access point to the root feeder node and the main path equipment from the boundary connecting equipment to the transmission network main transformer; wherein the bearing capacity of the equipment is equal to the rated capacity of the equipment minus the maximum measurement of the equipment after the tidal current transfer.
2. The method according to claim 1, wherein the method comprises: according to the distribution network model and the distribution network trend direction, main path equipment from a distribution network access point to a root feeder node is obtained,
acquiring a connection relation between a power distribution network access point and power distribution network equipment according to the power distribution network model;
And searching to a root feeder line node from the power distribution network access point in the direction opposite to the power distribution network flow direction according to the connection relation between the power distribution network devices, and obtaining a trunk path device from the power distribution network access point to the root feeder line node.
3. The method according to claim 1, wherein the method comprises: according to the power transmission network model and the power transmission network tide direction, main path equipment from the boundary connecting equipment to a main transformer of the power transmission network is obtained,
acquiring a connection relation between transmission network equipment according to the transmission network model;
and searching from the boundary connecting equipment to the main transformer of the power transmission network in the direction opposite to the power flow direction of the power transmission network according to the connection relation between the power transmission network equipment, and acquiring the main path equipment from the boundary connecting equipment to the main transformer of the power transmission network.
4. A system for computing equipment carrying capacity in coordination with transmission and distribution, comprising: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
distribution network equipment analysis module: acquiring trunk path equipment from a power distribution network access point to a root feeder node according to the power distribution network model and the power distribution network flow direction;
boundary connection device analysis module: acquiring boundary connection equipment of the power transmission network and the power distribution network according to the mapping relation between the root feeder node and the power transmission network equipment;
The power transmission network equipment analysis module: acquiring main path equipment from the boundary connecting equipment to a main transformer of the power transmission network according to the power transmission network model and the power transmission network tide direction;
n-1 analysis Module: based on historical data, acquiring a power flow transfer condition after an expected failure of associated equipment of a main transformer of the power transmission network;
a bearing capacity calculation module: calculating the bearing capacity of the main path equipment from the power distribution network access point to the transmission network main transformer according to the load flow transfer condition, the main path equipment from the power distribution network access point to the root feeder node and the main path equipment from the boundary connecting equipment to the transmission network main transformer; wherein the bearing capacity of the equipment is equal to the rated capacity of the equipment minus the maximum measurement of the equipment after the tidal current transfer.
5. The system of claim 4, wherein the computing system comprises: the power distribution network equipment analysis module comprises a power distribution network equipment analysis module,
the power distribution network connection relation acquisition module: acquiring a connection relation between a power distribution network access point and power distribution network equipment according to the power distribution network model;
distribution network equipment acquisition module: and searching to a root feeder line node from the power distribution network access point in the direction opposite to the power distribution network flow direction according to the connection relation between the power distribution network devices, and obtaining a trunk path device from the power distribution network access point to the root feeder line node.
6. The system of claim 4, wherein the computing system comprises: the grid equipment analysis module includes a power grid analysis module,
a power transmission network connection relation acquisition module: acquiring a connection relation between transmission network equipment according to the transmission network model;
transmission network equipment acquisition module: and searching from the boundary connecting equipment to the main transformer of the power transmission network in the direction opposite to the power flow direction of the power transmission network according to the connection relation between the power transmission network equipment, and acquiring the main path equipment from the boundary connecting equipment to the main transformer of the power transmission network.
7. A computer readable storage medium storing one or more programs, characterized in that: the one or more programs include instructions that, when executed by a computing device, cause the computing device to perform any of the methods of claims 1-3.
8. A computing device, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 1-3.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522747A (en) * | 2011-12-26 | 2012-06-27 | 天津大学 | Calculation method of power supply capability of power distribution system |
| CN109560547A (en) * | 2019-01-15 | 2019-04-02 | 广东电网有限责任公司 | A kind of active distribution network N-1 safety evaluation method considering transmission & distribution collaboration |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522747A (en) * | 2011-12-26 | 2012-06-27 | 天津大学 | Calculation method of power supply capability of power distribution system |
| CN109560547A (en) * | 2019-01-15 | 2019-04-02 | 广东电网有限责任公司 | A kind of active distribution network N-1 safety evaluation method considering transmission & distribution collaboration |
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