CN113315233B - Automatic drawing method and system for power grid topological graph - Google Patents

Automatic drawing method and system for power grid topological graph Download PDF

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Publication number
CN113315233B
CN113315233B CN202110670820.1A CN202110670820A CN113315233B CN 113315233 B CN113315233 B CN 113315233B CN 202110670820 A CN202110670820 A CN 202110670820A CN 113315233 B CN113315233 B CN 113315233B
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substation
equipment
power grid
position information
power
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CN113315233A (en
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张朝平
董振军
景杰
卜海滨
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Shanghai Sany Electronic Technology Co ltd
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Shanghai Sany Electronic Technology Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16—Electric power substations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/40—Display of information, e.g. of data or controls

Abstract

The invention provides a method and a system for automatically drawing a power grid topological graph, which can generate a topological relation according to equipment records in an equipment library, and further generate the power grid topological graph according to the topological relation, thereby greatly reducing the workload and being capable of conveniently updating the topological graph.

Description

Automatic drawing method and system for power grid topological graph
Technical Field
The invention belongs to the technical field of power grid monitoring, and particularly relates to a method and a system for automatically drawing a power grid topological graph.
Background
For a power grid, such as a coal mine power grid, when a coal mining working face is migrated, the power supply network structure at the tail end of a power supply system is also constantly changed, and is changed for almost several times every month, and correspondingly, a power grid topological graph in power grid monitoring needs to be changed accordingly, otherwise, some statistical analysis results are influenced.
At present, in a power grid monitoring system, a power grid topological graph is manually drawn by a power grid configuration tool, the workload is large, if the topological graph needs to be updated, manual deletion and addition need to be carried out in a configuration drawing environment, and the like, time and labor are consumed, so that the topological graph in the monitoring system is not in accordance with the reality.
Disclosure of Invention
Based on the above technical problem, a power grid topological graph automatic drawing method and system with small workload and convenient updating are provided.
In order to solve the technical problems, the invention adopts the following technical scheme:
on one hand, the method for automatically drawing the power grid topological graph is characterized by comprising the following steps of:
s101, establishing an equipment library, wherein the equipment library is provided with equipment records corresponding to each power grid terminal equipment, and the equipment records comprise terminal equipment position information, substation position information of an electric power substation to which the terminal equipment belongs and power grid node topology information of the substation;
s102, generating a topological relation according to the equipment records in the equipment library;
and S103, generating a power grid topological graph according to the topological relation.
In another aspect, an automatic power grid topological graph drawing system is provided, and is characterized by including a monitoring end, where the monitoring end is configured to execute the monitoring end step of the above automatic power grid topological graph drawing method.
The invention provides an automatic drawing scheme of a power grid topological graph, which can generate a topological relation according to equipment records in an equipment library, and further generate the power grid topological graph according to the topological relation, thereby greatly reducing the workload and being capable of conveniently updating the topological graph.
Drawings
The invention is described in detail below with reference to the following figures and detailed description:
FIG. 1 is a flow chart of the monitoring end steps of the present invention;
FIG. 2 is a flow chart of the grid termination equipment steps of the present invention;
FIG. 3 is a schematic diagram of the present invention;
fig. 4 is a schematic structural diagram of an automatic power grid topology drawing system according to the present invention.
Detailed Description
As shown in fig. 1, an embodiment of the present specification provides an automatic power grid topology drawing method, including the steps of:
s101, an equipment library is established, equipment records corresponding to each power grid terminal equipment are arranged in the equipment library, and the equipment records comprise terminal equipment position information, substation position information of an electric power substation to which the terminal equipment belongs and power grid node topology information of the substation.
In this embodiment, the terminal device location information sent by the power grid terminal device, the substation location information of the power substation to which the terminal device belongs, and the power grid node topology information of the substation may be received, and the device record in the device library may be updated according to the information, which is higher in real-time performance and efficiency.
Of course, the position information of each terminal device, the substation position information of the power substation to which the terminal device belongs, and the power grid node topology information of the substation may be collected in advance and then input into the device library, so as to update the device record.
The updating process is as follows:
1. and judging whether the equipment library has a corresponding equipment record or not according to the position information of the terminal equipment, if so, executing an old equipment migration step, and if not, executing a new equipment addition step.
2. And (3) migrating the old equipment: the method comprises the steps of firstly deleting old equipment from equipment records of associated superior and subordinate equipment, then initializing the equipment records of the old equipment, finally updating the equipment records of the old equipment through received terminal equipment position information, substation position information of an electric substation to which the terminal equipment belongs and power grid node topology information of the substation, and marking the equipment records.
Of course, for security reasons, the device library may be automatically backed up prior to updating for reference or recovery in particular situations.
3. Adding new equipment: and generating a new device record through the received terminal device position information, the substation position information of the power substation to which the terminal device belongs and the power grid node topology information of the substation, and marking the device record.
And S102, generating a topological relation according to the equipment records in the equipment library.
In this embodiment, the topological relation may be updated according to the labeled device record:
1. and traversing the corresponding superior device according to the marked device record, adding a subordinate node for each device, and meanwhile traversing the corresponding subordinate device and adding a superior node for each subordinate device.
2. Calculating the distance between the nodes according to the substation position information of the electric substation to which each node belongs: the distance between the nodes of the same power substation is 0, the distance between the nodes of different power substations is calculated by adopting a horizontal spacing method, and the formula is as follows: abs (Z0-Z1) + COEF SQRT ((X0-X1) × (X0-X1) + (Y0-Y1) × (Y0-Y1)), where X0, Y0, and Z0 are three-dimensional coordinates of one power substation, X1, Y1, and Z1 are three-dimensional coordinates of another power substation, and COEF is an indirect coefficient having a value of 1.0 to 1.6.
3. And carrying out topological relation verification. It is possible to mainly check two cases, 1, whether an isolated node occurs, 2, whether the node relationships are contradictory, for example, one a node sets a subordinate node B, but the B node does not set the a node as a superior node, or vice versa.
And S103, generating a power grid topological graph according to the topological relation.
Specifically, when a user opens the power grid topological graph, the power grid topological graph is generated according to the topological relation in response to a power grid topological graph opening instruction input by the user:
1. reading the topological relation, determining an initial incoming line node, and drawing from top to bottom step by step from the initial incoming line node:
and drawing short lines with equal length for the upper and lower nodes with the distance of 0.
And for the upper and lower nodes with the distance not being 0, drawing lines with corresponding proportional lengths according to the distance.
A transformer is inserted between upper and lower nodes of different voltage classes.
For a node having a plurality of lower nodes, a bus is drawn thereunder, and the length of the bus is determined by the number of the lower nodes.
One exception in the drawing is the drawing of the bus-tie, because the bus-tie node has a plurality of lower levels but no upper level, for the nodes with a plurality of upper levels, considering the condition that one upper level node is the bus-tie node, all the lower level nodes of the bus-tie node are drawn under two sections of buses in a grouping way, and the length of the buses is determined by the number of the lower level nodes.
2. And responding to an adjusting instruction input by a user, and adjusting the power grid topological graph.
When a new power grid terminal device is installed in a power grid or a new place is installed with the power grid terminal device, a worker can access the power grid terminal device into a local area network and set corresponding device position information, the power grid terminal device can be actively connected with an affiliated power substation end, and the affiliated power substation end issues the substation position information and power grid node topology information of the affiliated power substation end to the power grid terminal device.
As shown in fig. 2, the power grid terminal equipment steps include:
s201, when no corresponding power substation establishes communication with the power substation, a registration request is sent to a current local area network at a preset frequency (for example, once every 6 seconds), wherein the registration request includes terminal equipment position information.
S202, substation position information and power grid node topology information sent by the electric power substation terminal are received.
S203, sending the position information of the terminal equipment, the substation position information of the electric power substation to which the terminal equipment belongs and the power grid node topology information of the substation to a monitoring end.
In this embodiment, the communication data between the power grid terminal device and the monitoring terminal is transmitted through the data at the power substation terminal.
The power substation end step includes:
and responding to the registration request, and sending the substation position information and the power grid node topology information to corresponding power grid terminal equipment.
In this embodiment, the power grid refers to a coal mine power grid, a high-voltage switch or a low-voltage switch is commonly used in the coal mine power grid, each switch is provided with a protector, correspondingly, the power grid terminal device refers to the switch, the terminal device position information includes substation information where the terminal device is located, a protector address (i.e., a communication address for identifying the protector, the communication address is generally from 1 to 250, which is a unique identifier of the protector, and in a substation, one communication address uniquely identifies one device), I P address, MAC address and the like; the substation position information includes a substation name, position information (such as I P address), coordinate information, and the like, and the grid node topology information includes a protector node name, the number and name of upper nodes, the number and name of lower nodes, and the like.
Based on the same inventive concept, as shown in fig. 4, an embodiment of the present specification further provides an automatic power grid topology drawing system, which includes a monitoring end 11, where the monitoring end 11 is configured to execute the monitoring end step of the automatic power grid topology drawing method.
In this embodiment, the system of the present invention further includes a power grid terminal device 12, where the power grid terminal device 12 is configured to execute the power grid terminal device step of the above-mentioned power grid topology map automatic drawing method.
In this embodiment, the system of the present invention further includes an electric power substation end 13, where the electric power substation end 13 is configured to execute the electric power substation end step of the above-mentioned automatic grid topology drawing method.
The communication data of the power grid terminal device 12 and the monitoring terminal 11 are transmitted through the power substation terminal 13.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
As shown in fig. 3, the following description will be made by taking as an example the 1-sector 1# substation 16# high-voltage switch, which is transferred to the 1-sector 2# substation.
1) The 16# high-voltage switch of the 1 mining area 1# substation needs to be moved to the 1 mining area 2# substation, after the switch installation project is finished, according to the equipment condition of the 1 mining area 2# substation, a worker can name the switch as the 23# high-voltage switch of the 1 mining area 2# substation, and modify the protector address, the I P address and the like of the switch according to the equipment condition of the 1 mining area 2# substation and connect a protector communication line.
2) When the address of the protector of the 23# high-voltage switch of the 2# substation in the mining area 1 is changed and no corresponding power substation establishes communication with the protector, at this time, the protector sends UDP packet information requesting registration to the current local area network at a fixed interval (default 6 seconds), wherein the UDP packet information comprises: the method comprises the steps that position information such as the address of a protector, the address I P and the MAC address of the protector is received by a power substation of the No. 2 substation in the mining area 1, the request is responded after the power substation receives the registration request, the position information and the power grid node topology information of the protector are issued to the protector, then normal communication connection between the protector and the power substation of an access point is established, and the protector does not send a registration request frame any more.
3) And the protector stores the received position information and the power grid node topology information after receiving the electric substation power substation message of the No. 2 substation in the mining area 1.
4) The 23# high-voltage switch protector of the 2# substation in the 1 mining area actively transmits the position information of the protector, the position information of the substation and the topology information of the power grid node to a ground monitoring end; of course, when the ground monitoring terminal wants to rebuild the topology, the above information can be requested from each protector.
5) After the ground monitoring terminal obtains information transmitted by the No. 23 high-voltage switch protector of the No. 2 substation in the mining area 1, the equipment library is backed up firstly, then the existing equipment library is searched, the corresponding protector is found to exist, the equipment is judged to be migrated, then the equipment library is updated according to the old equipment migration step, and after the updating, the protector is not in the No. 1 substation in the mining area 1, but is in the No. 2 substation in the mining area 1.
6) And after the equipment library is updated, the topological relation is reconstructed, the equipment library is searched for equipment records with change marks, namely records of the 23# high-voltage switch of the 2# substation in the 1 mining area, and the topological relation is updated according to the records.
7) And when the power grid topological graph is opened, the power grid monitoring end draws a new topological graph according to the new topological relation.
And after the drawing is finished, allowing a user to adjust, including the adjustment of the switch position, the adjustment of the length of the connecting line and the like.
However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.

Claims (5)

1. A method for automatically drawing a power grid topological graph is characterized by comprising the following steps:
the monitoring end executes the following steps:
s101, establishing an equipment library, wherein the equipment library is provided with equipment records corresponding to each power grid terminal equipment, and the equipment records comprise terminal equipment position information, substation position information of an electric substation to which the terminal equipment belongs and power grid node topology information of the substation;
s102, generating a topological relation according to the equipment records in the equipment library;
s103, generating a power grid topological graph according to the topological relation;
s104, receiving terminal equipment position information sent by power grid terminal equipment, substation position information of a power substation to which the terminal equipment belongs and power grid node topology information of the substation, and updating equipment records in an equipment library according to the information;
the power grid terminal equipment executes the following steps:
s201, when no corresponding power substation establishes communication with the terminal equipment, a registration request is sent to a current local area network at a preset frequency, wherein the registration request comprises the position information of the terminal equipment;
s202, receiving substation position information sent by an electric power substation end to which the terminal equipment belongs and power grid node topology information of the substation;
s203, sending the position information of the terminal equipment, the substation position information of the electric power substation to which the terminal equipment belongs and the power grid node topology information of the substation to a monitoring end;
the electric power substation end executes the following steps:
s301, responding to the registration request, and sending the substation position information and the power grid node topology information of the substation to corresponding power grid terminal equipment;
the terminal device position information comprises a communication address, an IP address and an MAC address of the terminal device, the substation position information comprises the IP address of the power substation, and the power grid node topology information comprises the number and the name of upper nodes and the number and the name of lower nodes.
2. The method according to claim 1, wherein the updating of the device records in the device library further comprises:
judging whether the equipment library has a corresponding equipment record or not according to the position information of the terminal equipment, if so, executing an old equipment migration step, and if not, executing a new equipment addition step;
and (3) migrating the old equipment: firstly, deleting old equipment from equipment records of associated superior and subordinate equipment, then initializing the equipment records of the old equipment, finally updating the equipment records of the old equipment through the received position information of the terminal equipment, substation position information of an electric substation to which the terminal equipment belongs and power grid node topology information of the substation, and marking the equipment records;
adding new equipment: and generating a new device record through the received terminal device position information, the substation position information of the electric power substation to which the terminal device belongs and the power grid node topology information of the substation, and marking the device record.
3. The method according to claim 2, wherein the monitoring end performs the steps of updating the topological relation according to the labeled device record:
traversing the corresponding upper equipment according to the marked equipment record, adding a lower node for each upper equipment, and traversing the corresponding lower equipment simultaneously, and adding a higher node for each lower equipment;
calculating the distance between the nodes according to the substation position information of the electric substation to which each node belongs: the distance between the nodes belonging to the same power substation is 0, the distance between the nodes belonging to different power substations is calculated by adopting a horizontal spacing method, and the calculation formula is as follows: abs (Z0-Z1) + COEF SQRT ((X0-X1) × (X0-X1) + (Y0-Y1) × (Y0-Y1)), where X0, Y0, and Z0 are three-dimensional coordinates of one power substation, X1, Y1, and Z1 are three-dimensional coordinates of another power substation, and COEF is an indirect coefficient, and has a value of 1.0 to 1.6;
and carrying out topological relation verification.
4. The method according to claim 3, wherein the step S103 further includes generating a power grid topology map according to the topological relation in response to a power grid topology map opening instruction input by a user, and specifically includes:
reading the topological relation, determining an initial incoming line node, and drawing the initial incoming line node from top to bottom step by step;
drawing short lines with equal length for upper and lower nodes at the distance of 0;
for the upper and lower level nodes with the distance of not 0, drawing lines with corresponding proportional lengths according to the distance;
a transformer is inserted between upper and lower nodes with different voltage levels;
for a node with a plurality of lower nodes, drawing a bus below the node, wherein the length of the bus is determined by the number of the lower nodes;
for nodes with a plurality of upper nodes, considering the condition that one of the upper nodes is a bus-coupled node, drawing all lower nodes of the bus-coupled node under two sections of buses in a grouping way, wherein the length of each bus is determined by the number of the lower nodes;
and responding to an adjusting instruction input by a user, and adjusting the power grid topological graph.
5. An automatic power grid topology drawing system is characterized by comprising a monitoring end, a power grid terminal device and a power substation end, wherein the monitoring end, the power grid terminal device and the power substation end are configured to execute an automatic power grid topology drawing method according to any one of claims 1 to 4.
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