CN110705801A - Power grid accident economic loss estimation method and system based on fault loss electric quantity - Google Patents
Power grid accident economic loss estimation method and system based on fault loss electric quantity Download PDFInfo
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Abstract
The invention provides a power grid accident economic loss estimation method and system based on fault loss electric quantity, wherein the method comprises the following steps: s1, calculating the fault loss electric quantity of each fault line in the power grid accident; s2, acquiring the load type characteristic of each fault line; and S3, searching a ten-thousand-yuan production value electric quantity corresponding table according to the load type characteristics and the loss electric quantity of the fault line, and acquiring the economic loss of the fault line. According to the method and the system for estimating the economic loss of the power grid accident based on the fault loss electric quantity, provided by the invention, after a power device fails, the fault loss electric quantity to be faced by a power enterprise is obtained through integral calculation according to information provided by short-term load prediction, the economic loss caused to the society is estimated, the reasonable scheduling of the power generation capacity is realized on the basis of the estimation, the output requirement of a power plant in operation is predicted, an economic and reasonable emergency repair scheme is realized, the loss caused by the fault is reduced, and the stability of the power enterprise and the society is ensured.
Description
Technical Field
The invention belongs to the technical field of power systems, and particularly relates to a power grid accident economic loss estimation method and system based on fault loss electric quantity.
Background
The inability to store large quantities of electrical energy makes it necessary for the power system to maintain a balanced supply and demand at all times and to provide reliable and standardized electrical energy to various consumers as economically as possible to meet their load demands. Therefore, in order to ensure safe and economic operation of the power system, the change rule of the load and the future change trend must be mastered. In the operation, control and planning management of the power system, the load prediction determines the reasonable arrangement of power generation, transmission and distribution, which is an important component of the power system planning and one of the important factors for improving the economic benefit of power enterprises and promoting the national economic development. Accurate short-term load prediction is the key of a power generation and supply plan and power supply and demand balance of a power grid made by a power grid dispatching mechanism, and is beneficial to system operators to efficiently predict the production, transmission, distribution and consumption conditions of electric energy and make an economical and reasonable power generation scheme. At present, no scheme for effectively estimating economic loss caused by power grid accidents exists.
Therefore, it is very necessary to provide a method and a system for estimating economic loss of a power grid accident based on fault loss electric quantity to solve the above-mentioned drawbacks in the prior art.
Disclosure of Invention
Aiming at the defect that the prior art lacks a scheme for estimating the economic loss caused by the power grid accident, the invention provides a power grid accident economic loss estimation method and system based on fault loss electric quantity, so as to solve the technical problem.
In a first aspect, the invention provides a grid accident economic loss estimation method based on fault loss electric quantity, which comprises the following steps:
s1, calculating the fault loss electric quantity of each fault line in the power grid accident;
s2, acquiring the load type characteristic of each fault line;
and S3, searching a ten-thousand-yuan production value electric quantity corresponding table according to the load type characteristics and the loss electric quantity of the fault line, and acquiring the economic loss of the fault line.
Further, step S3 is followed by the following steps:
and S4, setting a power distribution first-aid repair sequence of the fault line according to the economic loss of the fault line. The power distribution first-aid repair sequence is set on the basis of the economic loss of the fault line, and the power generation capacity can be reasonably scheduled on the basis of the economic loss of the fault line.
Further, the step S4 specifically includes the following steps:
s41, acquiring the economic loss of each fault line;
and S42, setting a fault line emergency repair grade according to the economic loss value of each fault line, and then carrying out power distribution emergency repair on the fault line according to the fault line emergency repair grade. The fault line is graded according to economic loss, so that distribution and emergency repair are facilitated, resources are reasonably utilized, and economic loss is reduced to the maximum extent.
Further, the step S42 specifically includes the following steps:
s421, setting a rush-repair grade of the fault line according to the relation between the economic loss value of each fault line and a set threshold value;
when the economic loss value of the fault line exceeds a set threshold value; step S422 is entered;
when the economic loss value of the fault line does not exceed the set threshold value; proceeding to step S423;
s422, setting the fault line as a priority first-aid repair fault line, and setting the priority first-aid repair fault line to carry out power distribution first-aid repair according to the economic loss order; finishing;
and S423, setting the fault line as a secondary emergency repair fault line, and setting the secondary emergency repair fault line to perform power distribution emergency repair according to the distance sequence. Different rush-repair strategies are adopted for different rush-repair grade fault lines, so that power distribution rush-repair resources are conveniently and fully utilized, meanwhile, the economic loss is reduced, and the balance of rush-repair resource scheduling and economic loss is realized.
Further, the step S1 specifically includes the following steps:
s11, calculating the ultra-short term coincidence prediction curve of each fault line in the power grid accident;
s12, acquiring an actual power curve of each fault line;
and S13, taking the starting and stopping time of the power grid fault as a node, and carrying out integral calculation on the ultra-short term coincidence prediction curve and the actual power curve of the fault line to obtain the fault loss electric quantity of each fault line. The ultra-short term coincidence prediction curve of the fault line adopts the existing ultra-short term coincidence prediction, such as the ultra-short term load prediction of the power system based on the chaos theory, and is not described herein again.
Further, the step S3 specifically includes the following steps:
s31, acquiring a ten-thousand-yuan production value electric quantity corresponding table;
s32, searching a ten-thousand-yuan production value column corresponding to the load type characteristic of the fault line in the ten-thousand-yuan production value electric quantity corresponding table;
and S33, searching the ten-thousand-yuan economic loss of the fault line in the corresponding ten-thousand-yuan production value list according to the fault loss electric quantity of the fault line. The ten thousand yuan of output value electric quantity corresponding table is refined into more than 500 kinds of load type characteristics, and in each kind of conforming type characteristics, different electric quantities correspond to different output values.
In a second aspect, the present invention provides a grid accident economic loss estimation system based on fault loss electric quantity, including:
the fault line electric quantity loss calculation module is used for calculating the fault loss electric quantity of each fault line in the power grid accident;
the fault line load type characteristic acquisition module is used for acquiring the load type characteristic of each fault line;
and the fault line economic loss acquisition module is used for searching the ten-thousand-yuan production value electric quantity corresponding table according to the fault line load type characteristics and the loss electric quantity to acquire the economic loss of the fault line.
Further, still include:
the power distribution first-aid repair sequence setting module is used for setting the power distribution first-aid repair sequence of the fault line according to the economic loss of the fault line; the power distribution first-aid repair sequence setting module comprises:
the fault line economic loss acquisition unit is used for acquiring the economic loss of each fault line;
and the fault line emergency repair grade setting unit is used for setting the fault line emergency repair grade according to the economic loss value of each fault line and then carrying out power distribution emergency repair on the fault line according to the fault line emergency repair grade.
Further, the fault line power loss calculation module comprises:
the ultra-short term conformance preset curve calculation unit is used for calculating an ultra-short term conformance prediction curve of each fault line in the power grid accident;
the actual power curve acquiring unit is used for acquiring an actual power curve of each fault line;
and the fault loss electric quantity calculating unit is used for carrying out integral calculation on the ultra-short term coincidence prediction curve and the actual power curve of the fault line by taking the starting and stopping time of the power grid fault as a node to obtain the fault loss electric quantity of each fault line.
Further, the fault line economic loss acquisition module comprises:
the ten-thousand-yuan produced value electric quantity corresponding table acquiring unit is used for acquiring the ten-thousand-yuan produced value electric quantity corresponding table;
the ten-thousand-yuan production value column searching unit is used for searching a ten-thousand-yuan production value column corresponding to the load type characteristic of the fault line in the ten-thousand-yuan production value electric quantity corresponding table;
and the ten-thousand-yuan economic loss acquisition unit is used for searching the ten-thousand-yuan economic loss of the fault line in the corresponding ten-thousand-yuan economic loss list according to the fault loss electric quantity of the fault line.
The beneficial effect of the invention is that,
according to the method and the system for estimating the economic loss of the power grid accident based on the fault loss electric quantity, provided by the invention, after a power device fails, the fault loss electric quantity to be faced by a power enterprise is obtained through integral calculation according to information provided by short-term load prediction, the economic loss caused to the society is estimated, the reasonable scheduling of the power generation capacity is realized on the basis of the estimation, the output requirement of a power plant in operation is predicted, an economic and reasonable emergency repair scheme is realized, the loss caused by the fault is reduced, and the stability of the power enterprise and the society is ensured.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a first schematic flow chart of the method of the present invention;
FIG. 2 is a second schematic flow chart of the method of the present invention;
FIG. 3 is a schematic diagram of the system of the present invention;
in the figure, 1-a fault line power loss calculation module; 1.1-ultra-short term conformity preset curve calculation unit; 1.2-actual power curve acquisition unit; 1.3-fault loss electric quantity calculating unit; 2-fault line load type characteristic obtaining module; 3-a fault line economic loss acquisition module; 3.1-ten thousand yuan of value electric quantity corresponding table acquisition unit; 3.2-ten thousand yuan produce value column searching unit; 3.3-ten thousand yuan of economic loss acquisition units; 4-power distribution first-aid repair sequence setting module; 4.1-a fault line economic loss acquisition unit; 4.2-failure line first-aid repair grade setting unit.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1, the present invention provides a grid accident economic loss estimation method based on fault loss electric quantity, which includes the following steps:
s1, calculating the fault loss electric quantity of each fault line in the power grid accident;
s2, acquiring the load type characteristic of each fault line;
s3, searching a ten-thousand-yuan production value electric quantity corresponding table according to the load type characteristics and the lost electric quantity of the fault line to obtain the economic loss of the fault line;
and S4, setting a power distribution first-aid repair sequence of the fault line according to the economic loss of the fault line.
Example 2:
as shown in fig. 2, the present invention provides a grid accident economic loss estimation method based on fault loss electric quantity, which includes the following steps:
s1, calculating the fault loss electric quantity of each fault line in the power grid accident; the method comprises the following specific steps:
s11, calculating the ultra-short term coincidence prediction curve of each fault line in the power grid accident;
s12, acquiring an actual power curve of each fault line;
s13, taking the starting and stopping time of the power grid fault as a node, and carrying out integral calculation on the ultra-short term coincidence prediction curve and the actual power curve of the fault line to obtain the fault loss electric quantity of each fault line;
s2, acquiring the load type characteristic of each fault line;
s3, searching a ten-thousand-yuan production value electric quantity corresponding table according to the load type characteristics and the lost electric quantity of the fault line to obtain the economic loss of the fault line; the method comprises the following specific steps:
s31, acquiring a ten-thousand-yuan production value electric quantity corresponding table;
s32, searching a ten-thousand-yuan production value column corresponding to the load type characteristic of the fault line in the ten-thousand-yuan production value electric quantity corresponding table;
s33, searching the ten-thousand-yuan economic loss of the fault line in the corresponding ten-thousand-yuan production value list according to the fault loss electric quantity of the fault line;
s4, setting a power distribution first-aid repair sequence of the fault line according to the economic loss of the fault line; the method comprises the following specific steps:
s41, acquiring the economic loss of each fault line;
s42, setting a fault line emergency repair grade according to the economic loss value of each fault line, and then carrying out power distribution emergency repair on the fault line according to the fault line emergency repair grade; the method comprises the following specific steps:
s421, setting a rush-repair grade of the fault line according to the relation between the economic loss value of each fault line and a set threshold value;
when the economic loss value of the fault line exceeds a set threshold value; step S422 is entered;
when the economic loss value of the fault line does not exceed the set threshold value; proceeding to step S423;
s422, setting the fault line as a priority first-aid repair fault line, and setting the priority first-aid repair fault line to carry out power distribution first-aid repair according to the economic loss order; finishing;
and S423, setting the fault line as a secondary emergency repair fault line, and setting the secondary emergency repair fault line to perform power distribution emergency repair according to the distance sequence.
Example 3:
as shown in fig. 3, the present invention provides a grid accident economic loss estimation system based on fault loss electric quantity, which includes:
the power loss calculation module 1 of the fault line is used for calculating the power loss of each fault line in the power grid accident; the fault line power loss calculation module 1 includes:
the ultra-short term conformance preset curve calculating unit 1.1 is used for calculating an ultra-short term conformance prediction curve of each fault line in the power grid accident;
an actual power curve obtaining unit 1.2, configured to obtain an actual power curve of each faulty line;
the fault loss electric quantity calculating unit 1.3 is used for carrying out integral calculation on the ultra-short term coincidence prediction curve and the actual power curve of the fault line by taking the starting and stopping time of the power grid fault as a node to obtain the fault loss electric quantity of each fault line;
the fault line load type characteristic acquisition module 2 is used for acquiring the load type characteristic of each fault line;
the fault line economic loss acquisition module 3 is used for searching the ten-thousand-yuan generation value electric quantity corresponding table according to the fault line load type characteristics and the lost electric quantity to acquire the economic loss of the fault line; the faulty line economic loss acquisition module 3 includes:
a ten thousand yuan of output value electric quantity corresponding table obtaining unit 3.1 for obtaining the ten thousand yuan of output value electric quantity corresponding table;
the ten-thousand-yuan production value column searching unit 3.2 is used for searching a ten-thousand-yuan production value column corresponding to the load type characteristic of the fault line in the ten-thousand-yuan production value electric quantity corresponding table;
the ten-thousand-yuan economic loss acquisition unit 3.3 is used for searching the ten-thousand-yuan economic loss of the fault line in the corresponding ten-thousand-yuan economic loss column according to the fault loss electric quantity of the fault line;
the power distribution first-aid repair sequence setting module 4 is used for setting the power distribution first-aid repair sequence of the fault line according to the economic loss of the fault line; the power distribution first-aid repair sequence setting module 4 comprises:
the fault line economic loss acquisition unit 4.1 is used for acquiring the economic loss of each fault line;
and the faulty line emergency repair grade setting unit 4.2 is used for setting the faulty line emergency repair grade according to the economic loss value of each faulty line and then carrying out power distribution emergency repair on the faulty line according to the faulty line emergency repair grade.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A power grid accident economic loss estimation method based on fault loss electric quantity is characterized by comprising the following steps:
s1, calculating the fault loss electric quantity of each fault line in the power grid accident;
s2, acquiring the load type characteristic of each fault line;
and S3, searching a ten-thousand-yuan production value electric quantity corresponding table according to the load type characteristics and the loss electric quantity of the fault line, and acquiring the economic loss of the fault line.
2. The grid accident economic loss estimation method based on fault loss electric quantity according to claim 1, characterized in that the step S3 is followed by the following steps:
and S4, setting a power distribution first-aid repair sequence of the fault line according to the economic loss of the fault line.
3. The grid accident economic loss estimation method based on fault loss electric quantity according to claim 2, wherein the step S4 is as follows:
s41, acquiring the economic loss of each fault line;
and S42, setting a fault line emergency repair grade according to the economic loss value of each fault line, and then carrying out power distribution emergency repair on the fault line according to the fault line emergency repair grade.
4. The grid accident economic loss estimation method based on fault loss electric quantity according to claim 3, wherein the step S42 includes the following steps:
s421, setting a rush-repair grade of the fault line according to the relation between the economic loss value of each fault line and a set threshold value;
when the economic loss value of the fault line exceeds a set threshold value; step S422 is entered;
when the economic loss value of the fault line does not exceed the set threshold value; proceeding to step S423;
s422, setting the fault line as a priority first-aid repair fault line, and setting the priority first-aid repair fault line to carry out power distribution first-aid repair according to the economic loss order; finishing;
and S423, setting the fault line as a secondary emergency repair fault line, and setting the secondary emergency repair fault line to perform power distribution emergency repair according to the distance sequence.
5. The grid accident economic loss estimation method based on fault loss electric quantity according to claim 1, wherein the step S1 is as follows:
s11, calculating the ultra-short term coincidence prediction curve of each fault line in the power grid accident;
s12, acquiring an actual power curve of each fault line;
and S13, taking the starting and stopping time of the power grid fault as a node, and carrying out integral calculation on the ultra-short term coincidence prediction curve and the actual power curve of the fault line to obtain the fault loss electric quantity of each fault line.
6. The grid accident economic loss estimation method based on fault loss electric quantity according to claim 1, wherein the step S3 is as follows:
s31, acquiring a ten-thousand-yuan production value electric quantity corresponding table;
s32, searching a ten-thousand-yuan production value column corresponding to the load type characteristic of the fault line in the ten-thousand-yuan production value electric quantity corresponding table;
and S33, searching the ten-thousand-yuan economic loss of the fault line in the corresponding ten-thousand-yuan production value list according to the fault loss electric quantity of the fault line.
7. A grid accident economic loss estimation system based on fault loss electric quantity is characterized by comprising:
the power loss calculation module (1) of the fault line is used for calculating the fault power loss of each fault line in the power grid accident;
the fault line load type characteristic acquisition module (2) is used for acquiring the load type characteristic of each fault line;
and the fault line economic loss acquisition module (3) is used for searching the ten-thousand-yuan generation value electric quantity corresponding table according to the fault line load type characteristics and the lost electric quantity to acquire the economic loss of the fault line.
8. A grid fault economic loss estimation system based on fault loss power as claimed in claim 7 further comprising:
the power distribution first-aid repair sequence setting module (4) is used for setting the power distribution first-aid repair sequence of the fault line according to the economic loss of the fault line; the power distribution first-aid repair sequence setting module (4) comprises:
a faulty line economic loss acquisition unit (4.1) for acquiring the economic loss of each faulty line;
and the fault line emergency repair grade setting unit (4.2) is used for setting the fault line emergency repair grade according to the economic loss value of each fault line and then carrying out power distribution emergency repair on the fault line according to the fault line emergency repair grade.
9. The grid accident economic loss estimation system based on fault loss power according to claim 7, characterized in that the fault line power loss calculation module (1) comprises:
the ultra-short term conformance preset curve calculation unit (1.1) is used for calculating an ultra-short term conformance prediction curve of each fault line in the power grid accident;
an actual power curve acquisition unit (1.2) for acquiring an actual power curve of each faulty line;
and the fault loss electric quantity calculating unit (1.3) is used for carrying out integral calculation on the ultra-short term coincidence prediction curve and the actual power curve of the fault line by taking the starting and stopping time of the power grid fault as a node to obtain the fault loss electric quantity of each fault line.
10. The grid accident economic loss estimation system based on fault loss electric quantity according to claim 7, characterized in that the fault line economic loss acquisition module (3) comprises:
a ten-thousand-yuan produced value electric quantity corresponding table obtaining unit (3.1) for obtaining the ten-thousand-yuan produced value electric quantity corresponding table;
the ten-thousand-yuan production value column searching unit (3.2) is used for searching a ten-thousand-yuan production value column corresponding to the load type characteristic of the fault line in the ten-thousand-yuan production value electric quantity corresponding table;
and the ten-thousand-yuan economic loss acquisition unit (3.3) is used for searching the ten-thousand-yuan economic loss of the fault line in the corresponding ten-thousand-yuan economic loss column according to the fault loss electric quantity of the fault line.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115935114A (en) * | 2022-11-29 | 2023-04-07 | 光大环境科技（中国）有限公司 | Method for calculating power loss electric quantity of power grid fault in wind power plant |
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