CN106844955B - Generation method of power grid dispatching operation ticket association chart - Google Patents
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Abstract
The invention relates to a method for generating a power grid dispatching operation ticket association diagram, and belongs to the technical field of power systems. The method comprises the following steps: firstly, topology searching is carried out on related equipment to be operated according to an operation task, an operation ticket tidal current diagram of a plant station and equipment related to the operation task is generated, finally, the positions of the equipment and the plant station related to the operation are adjusted, dynamic layout is carried out, and a correlation diagram related to the operation ticket is formed. After the association diagram is generated, the dispatcher can clearly and intuitively know the equipment to be operated, and powerful technical support and decision basis are provided for the dispatching and commanding operation of the power grid.
Description
Technical Field
The invention belongs to the field of electric power system dispatching automation, and particularly relates to a method for generating an association diagram of an operation order.
Background
The operation ticket refers to written basis for performing electrical operation in the power system, and comprises a scheduling instruction ticket, a maintenance ticket and a transformation operation ticket. In order to ensure that each electrical operation follows the correct sequence in the process of power running, before each operation, an operator must fill in a bill including the content and sequence of the operation steps, namely an operation bill. The operation tasks and task sequences of the operation tickets are proposed by the scheduling department governed by the equipment or proposed by the scheduling department after the operation units negotiate with the governed scheduling department and are approved by the scheduling department.
The heavy and critical daily work in the operation of the power grid is maintenance planning, the compilation of operation orders of power transformation operation and scheduling instructions, particularly the compilation of operation orders of the power transformation operation, and any error of the operation orders can cause the power failure of the power grid by mistake and even cause equipment and personal accidents. Therefore, the operation ticket is always compiled by an experienced dispatcher and is subject to strict checking. Even so, due to the ever-changing operation of the power grid, errors cannot always be completely avoided depending on human experience.
In recent years, as the scale of the power grid is continuously enlarged, more and more power grid devices are provided, and the operation modes of the power grid are increasingly diversified. A large number of operation tasks are generated due to the reasons of equipment overhaul tests, new equipment commissioning and debugging, equipment faults and defect treatment and the like every year, and the operation mode changes frequently. The original operation order drawing method of the monitoring center still adopts a pure manual drawing mode, which brings huge workload and pressure to a dispatcher and brings hidden danger to the safe operation of a power grid. Therefore, in order to ensure the safe and stable operation of the power system, reduce the working pressure of the dispatcher, adapt to the situation of rapid development of the power grid, and improve the efficiency of the dispatcher in commanding the operation of the power grid, it is necessary to research and develop an intelligent operation ticket-forming method. Therefore, operation ticket issuing systems are developed domestically, but most of the operation ticket issuing systems are used for stations, few operation ticket systems are developed for large power supply networks, manual ticket issuing is assisted by computers in an off-line mode, and the issuing environment is not easy to be real and visual.
The layout of the power plants, substations and switchyards within the power grid and the connection of the voltage power lines connecting them at each level is the grid structure. The steady distribution of voltage (each node) and power (active power and reactive power) (each branch) in the power system is called tidal current, and the power grid structural diagram formed by distributing the voltage and the power of the power grid through electrical symbols such as lines, nodes and reactance elements is a tidal current diagram. The power grid tidal current diagram centrally displays lines, tidal current distribution and line switches among plants and stations, and is a main interface for a dispatcher to monitor and analyze a power grid in real time. For regional power grids, the total tidal current diagram is generally very complex and large, and the graphical auxiliary invoicing is not visual enough, so that equipment and stations related to operation tasks cannot be clearly given.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for generating a power grid dispatching operation order association diagram.
The invention provides a method for generating a power grid dispatching operation ticket association graph, which is characterized by comprising the following steps of:
1) determining equipment to be operated or a plant station according to an operation task issued by a scheduling department, searching a tidal current diagram of the equipment to be operated or the plant station from the whole network tidal current diagram, and amplifying and displaying the partial tidal current diagram;
2) performing topology search on the whole power grid according to the operation task to generate a power grid tidal current diagram consisting of plant stations and equipment related to the operation task: the method specifically comprises the following steps:
2.1) determining the voltage grades of a power supply side and a load side related to the operation ticket, wherein for a regional power grid, the power supply side of a supply area is 110kV, and the load side is 35 kV;
2.2) lines for eliminating all non-load side voltage grades;
2.3) setting a line relation set Lg consisting of equipment connected with the line, wherein the ith element in the line relation set is Lgi：Lgi＝{Li,Si,Sj,Ci,Cj}
Wherein L isiIs the ith line, SiIs a line LiConnected head end station, SjIs a line LiConnected end station, CiIs a line LiConnected head end switch, CjIs a line LiAn end switch is connected. WhereinLiAnd Si、Sj、Ci、CjThe head end is at one side of 35kV voltage;
set of topological islands Ii：Ii＝{S1,S2,…,Sn,L1,L2,…,Lm,C1,C2,…,Ct}
Wherein S1、S2、SnTo the station belonging to this island, L1、L2、LmTo the line belonging to this island, C1、C2、CtA switch belonging to this island; setting a cut-off switch set Ck as a set of all 35kV cut-off switches; all 35kV on-off switches are stored in an on-off switch set Ck, all 35kV line switches are set to be in a closed state, 35kV lines connected with a 110kV station are eliminated, and the 35kV lines connected with the 110kV station and equipment connected with the lines are added into a line set Lg;
2.4) generating a node adjacency array by using all the rest lines, closed switches and all the stations;
2.5) carrying out depth-first topology search on the node adjacent array to form a topology island;
2.6) traversing all the topological island sets I, finding out equipment (plant station, line and switch) in an operation task, and if the equipment is a line and the line belongs to a line relation set Lg, finding out the topological island I to which a 35kV substation side switch connected with the line belongsk＝{S1,S2,…,Sn,L1,L2,…,Lm,C1,C2,…,Ct}; traversing the line relation set Lg, i-th line relation set Lgi＝{Li,Si,Sj,Ci,CjIf Si∈IkOr Sj∈Ik；
2.7) set the ith line relation LgiL in (1)i、Si、Sj、Ci、CjFive elements are sequentially added to the topological island IkIf the element is not in a topological islandIkIs added to the topological island IkIf the element is already in the topological island IkIn, abandon addition to topological island IkPerforming the following steps; forming a new topological island I 'after the traversal of the line relation set Lg is finished'kTidal flow graph of (c):
I'k＝{S1,S2,…,Sn,Si,Sj,L1,L2,…,Lm,Li,C1,C2,…,Ct,Si,Sj}；
3) adjusting the positions of equipment and stations related to the operation of the tidal current diagram, and performing dynamic layout; traversing the on-off switch set Ck if the ith switch element Cki∈I'kWill switch CkiThe setting is switched on and off, and finally the association diagram related to the operation ticket is formed.
The method has the technical characteristics that: the invention takes the operated equipment as an input condition, automatically generates the plant station and the equipment which are related to the operated equipment by utilizing the topological relation of the power grid model, can independently display the equipment on the total tide flow graph, and optimally adjusts the position between the plant station and the equipment, thereby realizing that a dispatcher intuitively knows the operation to be carried out. The definition of the power grid dispatching operation order association diagram is as follows: and displaying the power grid structures of all stations (from the outer side to the highest-voltage-level power supply substation) related to the operation ticket according to the topological connection relation of line connection between the stations.
The invention has the beneficial effects that: according to the power grid dispatching operation ticket correlation diagram generated by the method, a dispatcher can clearly and intuitively know the equipment to be operated, after invoicing, equipment operation can be performed on the equipment according to each specific ticket in the operation ticket, and load flow calculation is performed once per operation, so that the operation of the whole operation ticket can be continuously and dynamically simulated, and powerful technical support and decision basis are provided for power grid dispatching command operation.
Drawings
Fig. 1 is a simplified version of a power grid tidal flow diagram of an embodiment area of the present invention.
Fig. 2 is a local grid tidal flow graph of the present embodiment, localized to the device and magnified.
Fig. 3 is a topology diagram of the present embodiment after the elimination of the 110kV line.
Fig. 4 is a topological diagram of the embodiment after the 35kV line of the 110kV station is eliminated and the 35kV line switch is closed.
Fig. 5 is a topological diagram of the 110kV connected line and the 110kV station of the present embodiment after joining.
Fig. 6 is an operation task association diagram of the present embodiment.
Detailed Description
The method for generating the power grid dispatching operation ticket association diagram provided by the invention is further described in detail below by combining the figures and specific embodiments.
The invention provides a method for generating a power grid dispatching operation ticket association diagram, which is characterized by comprising the following steps of:
1) determining equipment to be operated or a plant station according to an operation task issued by a scheduling department, searching a tidal current diagram of the equipment to be operated or the plant station from the whole network tidal current diagram, and amplifying and displaying the partial tidal current diagram;
2) performing topology search on the whole power grid according to the operation task, and generating a power grid tidal current diagram consisting of plant stations and equipment related to the operation task, wherein the topology search specifically comprises the following steps:
2.1) determining the power supply side and load side voltage levels related to the operation ticket (for a regional power grid, the power supply side of a supply area is 110kV, and the load side is 35 kV);
2.2) lines for eliminating all non-load side voltage grades;
2.3) setting a line relation set Lg consisting of equipment connected with the line, wherein the ith element in the line relation set is Lgi：Lgi＝{Li,Si,Sj,Ci,Cj}
Wherein L isiIs the ith line, SiIs a line LiConnected head end station, SjIs a line LiConnected end station, CiIs a line LiConnected head end switch, CjIs a line LiAn end switch is connected. Wherein L isiAnd Si、Sj、Ci、CjThe head end is at one side of 35kV voltage;
set of topological islands Ii：Ii＝{S1,S2,…,Sn,L1,L2,…,Lm,C1,C2,…,Ct}
Wherein S1、S2、SnTo the station belonging to this island, L1、L2、LmTo the line belonging to this island, C1、C2、CtA switch belonging to this island; setting a cut-off switch set Ck as a set of all 35kV cut-off switches; all 35kV on-off switches are stored in an on-off switch set Ck, all 35kV line switches are set to be in a closed state, 35kV lines connected with a 110kV station are eliminated, and the 35kV lines connected with the 110kV station and equipment connected with the lines are added into a line set Lg;
2.4) generating a node adjacency array by using all the rest lines, closed switches and all the stations;
2.5) carrying out depth-first topology search on the node adjacent array to form a topology island;
2.6) traversing all the topological island sets I, finding out the topological island I to which the equipment (station, line and switch) in the operation task belongs (if the equipment is the line and the line belongs to the line relation set Lg, finding out the 35kV transformer substation side switch connected with the line)k＝{S1,S2,…,Sn,L1,L2,…,Lm,C1,C2,…,Ct}; traversing the line relation set Lg, i-th line relation set Lgi＝{Li,Si,Sj,Ci,CjIf Si∈IkOr Sj∈Ik；
2.7) set the ith line relation LgiL in (1)i、Si、Sj、Ci、CjFive elements are sequentially added to the topological island IkIn (1),if the element is not in a topological island IkIs added to the topological island IkIf the element is already in the topological island IkIn, abandon addition to topological island IkPerforming the following steps; forming a new topological island I 'after the traversal of the line relation set Lg is finished'kTidal flow graph of (c):
I'k＝{S1,S2,…,Sn,Si,Sj,L1,L2,…,Lm,Li,C1,C2,…,Ct,Si,Sj}；
3) adjusting the positions of equipment and stations related to the operation of the tidal current diagram, and performing dynamic layout; traversing the on-off switch set Ck if the ith switch element Cki∈I'kWill switch CkiThe setting is switched on and off, and finally the association diagram related to the operation ticket is formed.
The present invention will be described in further detail with reference to specific examples, which are provided herein for the purpose of illustrating the invention and are not to be construed as limiting the invention.
In this embodiment, a power failure operation is performed on a 35kV line, a specific operation task is a power failure of an L89 line, and a corresponding operation task association diagram is formed according to the operation task.
Fig. 1 is a simplified version of the regional power grid tidal current diagram of the present embodiment, which includes 2 110kV power plants a and B, 4 110kV substations (a1, B1, C1, D1), and 9 35kV substations (1-9);
5 110kV lines (L1, L2, L3, L4, L5) connecting the transformer substation with the transformer substation and the transformer substation with the power plant;
14 35kV lines connecting the substation with the substation (L11, L12, L16, L22, L27, L33, L34, L35, L38, L41, L42, L59, L67, L89);
36 switches (C1, C2, C3, C4, C5, C6, C7, C8, C111, C112, C113, C121, C122, C131, C132, C133, C141, C142, C311, C321, C322, C331, C332, C333, C341, C342, C351, C352, C361, C362, C371, C372, C381, C382, C391 and C392).
The method for generating the L89 line power failure operation ticket correlation diagram comprises the following steps:
1) according to an operation task of 'L89 line power failure', searching and positioning the regional power grid tidal flow graph to a to-be-operated equipment station (positioned according to types and names) related to a line L89 in the regional power grid tidal flow graph, and amplifying and displaying the partial tidal flow graph; the result of the enlarged display is shown in fig. 2, that is, in this embodiment, the locations of the involved plant stations are found to be 35kv plant stations 3,35kv plant stations 4,35kv plant stations 5,35kv plant stations 8, and 35kv plant stations 9 according to the operation task, and the tidal flow graph of the involved plant stations is enlarged and displayed.
2) Searching the tide flow graph of the regional power grid by adopting a depth-first topological method according to the operation task, and generating a tide flow graph of a station and related equipment related to an operation ticket; the method specifically comprises the following steps:
2.1) determining that the power supply side of a supply area related to an operation ticket is 4 110kV stations (A1, B1, C1 and D1), and the load side is 9 35kV stations (1,2,3,4,5,6,7,8 and 9);
2.2) eliminating all lines with non-load side voltage classes, eliminating all 110kV lines (L1-L5) and all line-connected switches (C1-C8) of 2 110kV power plants A and B connected with 4 110kV power plants, as shown in FIG. 3, namely eliminating 8 switches connected with 5 110kV lines and lines, the tidal current diagram related to the operation ticket comprises 2 110kV power plants A and B, 4 110kV substations (A1, B1, C1, D1), 9 35kV substations (1-9), 14 kV lines (L11, L12, L16, L22, L27, L33, L34, L35, L38, L41, L42, L59, L67, L89) connected with 14 kV lines, 28 switches (C111, C112, C341, C141, C341, C141, C331, C342, C311, C342, C35 kV substations, c371, C372, C381, C382, C391, C392);
2.3) storing the 35kV line switches (C121, C322, C361, C342 and C391) to be switched off into the switch set Ck and setting the 35kV line switches (C121, C322, C361, C342 and C391) to be in a closed state; eliminating 10 35kV lines (L11, L16, L12, L22, L27, L33, L34, L35, L41 and L42) of all 110kV stations, and respectively adding the eliminated 10kV lines into a line relation set consisting of equipment connected with the lines, wherein each line relation set is represented as follows:
Lg1is { L11,35kV station A, 110kV station C311, C111 };
Lg2is { L16,35kV station 6,110kV station A, C361, C112 };
Lg3is { L12,35kV station 2,110kV station A, C321, C113 };
Lg4is { L22,35kV station 2,110kV station B, C322, C121 };
Lg5is { L27,35kV station 7,110kV station B, C372, C122 };
Lg6is { L33,35kV station 3,110kV station C, C331, C131 };
Lg7is { L34,35kV station 3,110kV station C, C332, C132 };
Lg8is { L35,35kV station 4,110kV station C, C341, C133 };
Lg9is { L41,35kV station 4,110kV station D, C342, C141 };
Lg10is { L42,35kV station 5,110kV station D, C352, C142 };
as shown in fig. 4, that is, after all 35kV disconnection switches are closed and 10 110kV station 35kV lines are eliminated, the current diagram related to the operation ticket includes 2 110kV plants a and B, 4 110kV substations (a1, B1, C1, D1), 9 35kV substations (1-9), 4 35kV lines (L67, L89, L38, L59) and 28 switches (C111, C112, C113, C121, C122, C131, C132, C133, C141, C142, C311, C321, C322, C331, C332, C333, C341, C351, C352, C361, C362, C342, C372, C381, C382, C391, C392);
2.4) generating a node adjacency array by using all the rest lines, switches and stations;
2.5) carrying out depth-first topological search on the node adjacency array to form topological islands, wherein 11 topological islands are generated in total, and the information of the topological islands is represented as follows:
topological island 1 is I1Power plant a;
topological island 2 is I235kV station 3,35kV station 8,35kV station 9,35kV station 5,
L38,L89,L59,C331,C332,C333,C381,C382,C391,C392,C351,C352}；
topological island 7 is I7{35kV station 1, C311 };
topological island 10 is I10{35kV station 6,35kV station 7, C361, C362, C371, C372 };
topological island 11 is I11{110kV station D, C141, C142 };
2.6) pairs of 11 topological islands I1-I10Traversing to find that the line L89 belongs to the topological island I2(ii) a Traversing the line relation set Lg and the 6 th line relation set Lg6Is { L33,35kV station 3,110kV station C, C331, C131}, line relation set Lg6The head end station is 35kV station 3, and the 35kV station 3 belongs to a topological island I2。
2.7) aggregating the line relations Lg6Five elements of { L33,35kV station 3,110kV station C, C331, C131} are sequentially added to the topological island I2Wherein L33, 110kV station C, C131 is not in topological island I2Is found, is added to the topological island I2C331, 35kV station 3 is already in topological island I2In, abandon addition to topological island I2In (1).
Line relation set Lg7、Lg10The data are as follows:
Lg7is { L34,35kV station 3,110kV station C, C332, C132 };
Lg10is { L42,35kV station 5,110kV station D, C352, C142 };
known line relation set Lg7、Lg10The head end (tail end) transformer substation contained in the system also belongs to the topological island I2According to which a set of lines Lg is grouped7、Lg10Element of (5) into topological island I2In (1), the following structure is obtainedAnd (4) fruit:
topology island I'235kV station 3,35kV station 8,35kV station 9,35kV station 5,110kV station C,
110kV stations D, L38, L89, L59, L33, L3, L42, C331, C332, C333, C381, C382, C391, C392,
C352,C352,C131,C132,C133,C141,C142}；
post-joining topological island I'2The tide chart of (2) is shown in fig. 5, that is, the tide chart of the embodiment, in which the 110kV connected line and the 110kV station are added to perform the power outage operation on the 35kV line, and the specific operation ticket is the L89 line power outage, includes 2 110kV substations (C1, D1), 4 35kV substations (3,8,9,5), 6 35kV lines (L38, L89, L59, L33, L3, L42) connecting the substations and the substation, and 14 switches (C332, C333, C381, C382, C391, C392, C352, C131, C132, C133, C141, C142) connected to the lines and the substation.
3) The positions of the equipment and the plant stations related to the operation tickets in the tidal current diagram obtained in the step 2 are adjusted, namely, dynamic layout is carried out, so as to form a line L89 power failure correlation diagram in the embodiment shown in FIG. 6, namely, 2 110kV substations (C, D) are laid out at two sides of the upper part of the tidal current diagram, 4 35kV substations (3,8,9,5) are evenly distributed at the lower part of the tidal current diagram, and 6 35kV lines (L38, L89, L59, L33, L3, L42) connecting the substations and the transformer stations, and 14 switches (C332, C332, C333, C381, C382, C391, C392, C352, C352, C131, C132, C133, C141, C142) connected by the lines and the transformer stations are completed in the tidal current. Traversing the set of open switches Ck ═ (C121, C322, C361, C342, C391), switch C391 belongs to topology island I'2Switch C391 is set to open.
Claims (1)
1. A generation method of a power grid dispatching operation ticket association graph is characterized by comprising the following steps:
1) determining equipment to be operated or a plant station according to an operation task issued by a scheduling department, searching a tidal current diagram of the equipment to be operated or the plant station from the whole network tidal current diagram, and amplifying and displaying the partial tidal current diagram;
2) performing topology search on the whole power grid according to the operation task to generate a power grid tidal current diagram consisting of plant stations and equipment related to the operation task: the method specifically comprises the following steps:
2.1) determining the voltage grades of a power supply side and a load side related to the operation ticket, wherein for a regional power grid, the power supply side of a supply area is 110kV, and the load side is 35 kV;
2.2) lines for eliminating all non-load side voltage grades;
2.3) setting a line relation set Lg consisting of equipment connected with the line, wherein the ith element in the line relation set is Lgi：Lgi＝{Li,Si,Sj,Ci,Cj}；
Wherein L isiIs the ith line, SiIs a line LiConnected head end station, SjIs a line LiConnected end station, CiIs a line LiConnected head end switch, CjIs a line LiConnected end switch, wherein LiAnd Si、Sj、Ci、CjThe head end is at one side of 35kV voltage;
set of topological islands Ii：Ii＝{S1,S2,…,Sn,L1,L2,…,Lm,C1,C2,…,Ct}；
Wherein S1、S2、SnTo the station belonging to this island, L1、L2、LmTo the line belonging to this island, C1、C2、CtA switch belonging to this island; setting a cut-off switch set Ck as a set of all 35kV cut-off switches; all 35kV on-off switches are stored in an on-off switch set Ck, all 35kV line switches are set to be in a closed state, 35kV lines connected with a 110kV station are eliminated, and the 35kV lines connected with the 110kV station and equipment connected with the lines are added into a line set Lg;
2.4) generating a node adjacency array by using all the rest lines, closed switches and all the stations;
2.5) carrying out depth-first topology search on the node adjacent array to form a topology island;
2.6) set of all topological islands IiTraversing, finding out equipment in an operation task, and if the equipment is a line and the line belongs to a line relation set Lg, searching a topological island I to which a 35kV substation side switch connected with the line belongsk＝{S1,S2,…,Sn,L1,L2,…,Lm,C1,C2,…,Ct}; traversing the line relation set Lg, i-th line relation set Lgi＝{Li,Si,Sj,Ci,CjIf Si∈IkOr Sj∈Ik；
2.7) set the ith line relation LgiL in (1)i、Si、Sj、Ci、CjFive elements are sequentially added to the topological island IkIf said element is not in a topological island IkIs added to the topological island IkIf the element is already in the topological island IkIn, abandon addition to topological island IkPerforming the following steps; forming a new topological island I 'after the traversal of the line relation set Lg is finished'kTidal flow graph of (c):
I'k＝{S1,S2,…,Sn,Si,Sj,L1,L2,…,Lm,Li,C1,C2,…,Ct,Si,Sj}；
3) adjusting the positions of equipment and stations related to the operation of the tidal current diagram, and performing dynamic layout; traversing the on-off switch set Ck if the ith switch element Cki∈I'kWill switch CkiThe setting is switched on and off, and finally the association diagram related to the operation ticket is formed.
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| CN107886251A (en) * | 2017-11-24 | 2018-04-06 | 广东电网有限责任公司珠海供电局 | A kind of traffic order dispatches term intelligent conversion method |
| CN110365651B (en) * | 2019-06-17 | 2021-10-19 | 贵州黔驰信息股份有限公司 | Data distribution method based on image recognition |
| CN113708501A (en) * | 2021-09-14 | 2021-11-26 | 国网山东省电力公司鱼台县供电公司 | Method and system for improving scheduling operation ticket standard rate |
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| CN103440396A (en) * | 2013-05-23 | 2013-12-11 | 贵州电网公司电力调度控制中心 | Intelligent analysis ticket making method and system of dispatch operation ticket |
| CN103901777A (en) * | 2014-03-13 | 2014-07-02 | 国网四川省电力公司宜宾供电公司 | Power grid regulation integration combined simulation method |
| CN106296467A (en) * | 2016-08-31 | 2017-01-04 | 金现代信息产业股份有限公司 | A kind of method generating operation order |
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