CN107909197B - Statistical analysis method for operation mode of large branch based on feeder tree - Google Patents
Statistical analysis method for operation mode of large branch based on feeder tree Download PDFInfo
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Abstract
The invention relates to a statistical analysis method for a large branch operation mode based on a feeder tree. The method comprises the following steps: firstly, establishing a feeder tree information array FTIM, and recording the topological connection relation of feeder equipment by the array; secondly, establishing a feeder tree trunk path information array FZIM, and recording a trunk path topological connection relation between a transformer substation outgoing switch and a tie switch of a feeder line by the array; generating a branch path father node adjacency list FFT according to the feeder tree information array FTIM and the feeder tree trunk path information array FZIM; and finally, generating a large branch path information array FLIM according to the feeder tree information array FTIM and the branch path father node adjacency list FFT. The method has better adaptability and certain practical value when analyzing the feeder line operation mode and searching the operation state of the large branch.
Description
Technical Field
The invention relates to the field of analysis of operation modes of a power distribution network, in particular to a statistical analysis method of operation modes of large branches based on a feeder tree.
Background
The power supply reliability is an important index for measuring the intelligent degree of the power distribution network, and the action plan of the national network 'thirteen-five' also incorporates the index into a work report.
The operation mode of the power distribution network is the key for ensuring the safe and reliable operation of the power distribution network, is the basis for ensuring the reliability of power supply, and needs to supply power to important users including lifeline users, power-protection users, government users and sensitive users firstly when the operation mode is analyzed. In order to reduce the power outage area when a fault occurs, the power supply for the large branch needs to be ensured, so that the large branch of the power distribution network feeder line needs to be analyzed and counted.
In conclusion, the research on the statistical analysis method of the large branch of the feeder line of the power distribution network has important practical significance for formulating a reliable and effective operation mode.
Disclosure of Invention
The invention aims to provide a statistical analysis method for a large branch operation mode based on a feeder tree, which has better adaptability and certain practical value when the method is used for analyzing the feeder operation mode and searching the large branch operation state
In order to achieve the purpose, the technical scheme of the invention is as follows: a statistical analysis method for operation modes of large branches based on a feeder tree comprises the following steps,
s1, establishing a feeder tree information array FTIM, and recording the topological connection relation of feeder equipment by the array;
s2, establishing a feeder tree trunk path information array FZIM, and recording a trunk path topological connection relation between a substation outgoing switch and a tie switch of a feeder line by the array;
s3, generating a branch path father node adjacency list FFT according to the feeder tree information array FTIM and the feeder tree trunk path information array FZIM;
s4, generating a large branch path information array FLIM according to the feeder tree information array FTIM and the branch path father node adjacency list FFT.
In an embodiment of the present invention, the specific implementation procedure in step S1 is as follows,
establishing a feeder tree information array FTIM:
wherein, each row represents the parent-child topological connection relation of one device, i is 1,2,3, …, n, fti1Is the name of the ith device of the feeder line, fti2Name of parent node connected for feeder ith device, fti3And the sub-node set is connected with the ith device of the feeder line.
In an embodiment of the present invention, the specific implementation process of step S2 is as follows,
establishing a feeder tree trunk path information array FZIM,
wherein each action is a trunk path, fzijThe name of j-th equipment in the ith trunk path of the feeder line is shown, i is 1,2,3, …, and n is the number of trunk paths; j is 1,2,3, …, m, m is the number of devices included in the longest trunk path, if fzijIf not, take-1.
In an embodiment of the present invention, the specific implementation process of step S3 is as follows,
s31, taking any line i in the feeder tree trunk path information array FZIM, and sequentially selecting the jth (j is 1,2,3 … m) data fz according to the sequenceijAnd proceeds to step S32 to perform the processing;
s32, searching column 1 and fz in feeder tree information array FTIMijIf the devices in the child nodes of the devices with the same name are all located on the main path, returning to step S31, if the devices in the child nodes of the devices with the same name contain devices on the non-main path, putting all devices on the non-main path into the branch path parent node adjacency table FFT, and if the devices already exist in the FFT, not processing the devices; the specific description is as follows:
FFT＝[ff1,ff2,ff3,…,ffk,…ffw]
wherein ff iskThe name of the parent node device of the branch path is shown, k is 1,2,3 … w, and w is the number of the parent node devices of the separating gate data;
and S33, repeating the step S31 and the step S32 until all the rows in the feeder tree trunk path information array FZIM are processed.
In an embodiment of the present invention, the specific implementation process of step S4 is as follows,
s41, taking any one ff in branch path father node adjacent table FFTkSearching all the devices supplied with power at the downstream according to the feeder tree information array FTIM, and calculating the power distribution supplied by the devicesThe number N of transformers, step S42;
s42, if the number N of distribution transformers is greater than or equal to the predetermined limit number VAL, the device ff is usedkThe branch path of the father node is a large branch path, and all the devices of the father node are written into a large branch path information array FLIM according to the topological relation; if the number N of distribution transformers is less than the prescribed limit number VAL, returning to step S41;
wherein each action is a large branch path, flpqFor the name of the q-th device in the p-th large branch path of the feeder line, p is 1,2,3, …, g and g are the large branch path number. q is 1,2,3, …, h, h is the number of devices in the longest branch path, if flpqIf the signal does not exist, taking-1;
and S43, repeating the step S41 and the step S42 until all the devices in the FFT of the branch path parent node adjacency list are analyzed.
Compared with the prior art, the invention has the following beneficial effects: firstly, establishing a feeder tree information array FTIM, and recording the topological connection relation of feeder equipment by the array; secondly, establishing a feeder tree trunk path information array FZIM, and recording a trunk path topological connection relation between a transformer substation outgoing switch and a tie switch of a feeder line by the array; generating a branch path father node adjacency list FFT according to the feeder tree information array FTIM and the feeder tree trunk path information array FZIM; finally, generating a large branch path information array FLIM according to the feeder tree information array FTIM and the branch path father node adjacency list FFT; the method has better adaptability and certain practical value when analyzing the operation mode of the feeder line and searching the operation state of the large branch.
Detailed Description
The technical solution of the present invention is specifically explained below.
The invention relates to a statistical analysis method for a big branch operation mode based on a feeder tree, which comprises the following steps,
s1, establishing a feeder tree information array FTIM, and recording the topological connection relation of feeder equipment by the array;
s2, establishing a feeder tree trunk path information array FZIM, and recording a trunk path topological connection relation between a substation outgoing switch and a tie switch of a feeder line by the array;
s3, generating a branch path father node adjacency list FFT according to the feeder tree information array FTIM and the feeder tree trunk path information array FZIM;
s4, generating a large branch path information array FLIM according to the feeder tree information array FTIM and the branch path father node adjacency list FFT.
Establishing a feeder tree information array FTIM, and recording the topological connection relation of feeder equipment by the array, which is specifically described as follows:
establishing a feeder tree information array FTIM:
wherein, each row represents the parent-child topological connection relation of one device, i is 1,2,3, …, n, fti1Is the name of the ith device of the feeder line, fti2Name of parent node connected for feeder ith device, fti3And the sub-node set is connected with the ith device of the feeder line.
Establishing a feeder tree trunk path information array FZIM, and recording a trunk path topological connection relation between a substation outgoing switch and a tie switch of a feeder by the array, wherein the detailed description is as follows:
establishing a feeder tree trunk path information array FZIM,
wherein each action is a trunk path, fzijThe name of j-th equipment in the ith trunk path of the feeder line is shown, i is 1,2,3, …, and n is the number of trunk paths; j is 1,2,3, …, m, m is the number of devices included in the longest trunk path, if fzijIf not, take-1.
Generating a branch path father node adjacency list FFT according to a feeder tree information array FTIM and a feeder tree trunk path information array FZIM, which is specifically described as follows:
s31, taking any line i in the feeder tree trunk path information array FZIM, and sequentially selecting the jth (j is 1,2,3 … m) data fz according to the sequenceijAnd proceeds to step S32 to perform the processing;
s32, searching column 1 and fz in feeder tree information array FTIMijIf the devices in the child nodes of the devices with the same name are all located on the main path, returning to step S31, if the devices in the child nodes of the devices with the same name contain devices on the non-main path, putting all devices on the non-main path into the branch path parent node adjacency table FFT, and if the devices already exist in the FFT, not processing the devices; the specific description is as follows:
FFT＝[ff1,ff2,ff3,…,ffk,…ffw]
wherein ff iskThe name of the parent node device of the branch path is shown, k is 1,2,3 … w, and w is the number of the parent node devices of the separating gate data;
and S33, repeating the step S31 and the step S32 until all the rows in the feeder tree trunk path information array FZIM are processed.
Generating a large branch path information array FLIM according to the feeder tree information array FTIM and the branch path father node adjacency list FFT, which is specifically described as follows:
s41, taking any one ff in branch path father node adjacent table FFTkSearching all the devices supplied with power at the downstream according to the feeder tree information array FTIM, calculating the number N of the distribution transformers supplied with power, and entering the step S42;
s42, if the number N of distribution transformers is greater than or equal to the predetermined limit number VAL, the device ff is usedkThe branch path of the father node is a large branch path, and all the devices of the father node are written into a large branch path information array FLIM according to the topological relation; if the number N of distribution transformers is less than the prescribed limit number VAL, returning to step S41;
wherein each action is a large branch path, flpqFor the name of the q-th device in the p-th large branch path of the feeder line, p is 1,2,3, …, g and g are the large branch path number. q is 1,2,3, …, h, h is the number of devices in the longest branch path, if flpqIf the signal does not exist, taking-1;
and S43, repeating the step S41 and the step S42 until all the devices in the FFT of the branch path parent node adjacency list are analyzed.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (1)
1. A statistical analysis method for operation modes of large branches based on a feeder tree is characterized in that: comprises the following steps of (a) carrying out,
s1, establishing a feeder tree information array FTIM, and recording the topological connection relation of feeder equipment by the array;
s2, establishing a feeder tree trunk path information array FZIM, and recording a trunk path topological connection relation between a substation outgoing switch and a tie switch of a feeder line by the array;
s3, generating a branch path father node adjacency list FFT according to the feeder tree information array FTIM and the feeder tree trunk path information array FZIM;
s4, generating a large branch path information array FLIM according to the feeder tree information array FTIM and the branch path father node adjacency list FFT;
the specific implementation process in step S1 is as follows,
establishing a feeder tree information array FTIM:
wherein, each row represents the parent-child topological connection relation of one device, i is 1,2,3, …, n, fti1Is the name of the ith device of the feeder line, fti2Name of parent node connected for ith device of feeder line，fti3A set of sub-nodes connected for the ith device of the feeder line;
the specific implementation process of step S2 is as follows,
establishing a feeder tree trunk path information array FZIM,
wherein each action is a trunk path, fzijThe name of j-th equipment in the ith trunk path of the feeder line is shown, i is 1,2,3, …, and n is the number of trunk paths; j is 1,2,3, …, m, m is the number of devices included in the longest trunk path, if fzijIf the signal does not exist, taking-1;
the specific implementation process of step S3 is as follows,
s31, taking any line i in the feeder tree trunk path information array FZIM, and sequentially selecting the jth (j is 1,2,3 … m) data fz according to the sequenceijAnd proceeds to step S32 to perform the processing;
s32, searching column 1 and fz in feeder tree information array FTIMijIf the devices in the child nodes of the devices with the same name are all located on the main path, returning to step S31, if the devices in the child nodes of the devices with the same name contain devices on the non-main path, putting all devices on the non-main path into the branch path parent node adjacency table FFT, and if the devices already exist in the FFT, not processing the devices; the specific description is as follows:
FFT＝[ff1,ff2,ff3,…,ffk,…ffw]
wherein ff iskThe name of the parent node device of the branch path is shown, k is 1,2,3 … w, and w is the number of the parent node devices of the separating gate data;
s33, repeating the step S31 and the step S32 until all the rows in the feeder tree trunk path information array FZIM are processed;
the specific implementation process of step S4 is as follows,
s41, taking any one ff in branch path father node adjacent table FFTkAccording to the feeder tree information array FTIM search methodAll the devices supplied with power by the downstream, and the number N of the distribution transformers supplied with power by the devices is calculated, and the step S42 is carried out;
s42, if the number N of distribution transformers is greater than or equal to the predetermined limit number VAL, the device ff is usedkThe branch path of the father node is a large branch path, and all the devices of the father node are written into a large branch path information array FLIM according to the topological relation; if the number N of distribution transformers is less than the prescribed limit number VAL, returning to step S41;
wherein each action is a large branch path, flpqThe name of the q device in the p-th large branch path of the feeder line is shown, and p is 1,2,3, …, g and g are the number of the large branch paths; q is 1,2,3, …, h, h is the number of devices in the longest branch path, if flpqIf the signal does not exist, taking-1;
and S43, repeating the step S41 and the step S42 until all the devices in the FFT of the branch path parent node adjacency list are analyzed.
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| CN112421612B (en) * | 2020-11-03 | 2023-01-06 | 北京科东电力控制系统有限责任公司 | Medium-voltage main line branch line analysis method based on distribution network operation state |
| CN115425652B (en) * | 2022-11-07 | 2023-01-24 | 广东电网有限责任公司肇庆供电局 | Method and system for identifying key main path of power distribution network based on parent-child node information array |
| CN115459272B (en) * | 2022-11-09 | 2023-03-24 | 广东电网有限责任公司肇庆供电局 | Minimum distribution sub-network dividing method and system based on feeder switch information array |
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