CN109472431B - Method for evaluating power-saving spare parts - Google Patents
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Abstract
The invention relates to the technical field of power system maintenance, in particular to a method for evaluating power-saving spare parts. A power-saving spare part evaluation method is characterized by comprising the following steps: A) importing a power grid topological structure and a power protection client, and obtaining a power protection target equipment set by adopting a breadth first method; B) leading in a road network, leading in the positions of the electricity-protecting target equipment and the spare part station in the road network, and leading in the spare part station to store spare parts; C) evaluating the completeness rate of the spare parts; D) and evaluating the reasonable rate of the spare station selection. The substantial effects of the invention are as follows: by comprehensively considering the spare parts foot preparation rate and the rationality of the spare parts station selection, the preparation condition of the power-saving spare parts can be evaluated, and whether the preparation of the power-saving spare parts is sufficient and reasonable is reflected.
Description
Technical Field
The invention relates to the technical field of power system maintenance, in particular to a method for evaluating power-saving spare parts.
Background
With the development of power systems, the management and operation of power systems also tend to be perfect. The assessment of the power system executive units or employees is also standardized. The examination can check and reflect the skill level and the work completion degree of basic level units and employees, and can screen out the employees and the units which do not meet the work requirements for targeted adjustment or retraining. Meanwhile, the problems and the defects of execution units and staff in work can be reflected, and a clear reference is provided for subsequent improvement. By checking qualified execution units and employees, the supervision on the work of the employees can be reduced, and the management workload is reduced. And proper rewards can be set for execution units and staff with excellent assessment so as to encourage the working enthusiasm of the execution units and the staff and enhance the reliability of the operation of the power grid.
The important active power conservation task is a new task in a new era generated under the background that international participation is gradually increased along with the gradual enhancement of international influence of China in recent years. The important movable power protection task has the characteristics of temporality and heavy task, if the power protection task cannot be completed satisfactorily, serious adverse consequences and negative effects can be caused, and the comprehensive examination on the safety, reliability and emergency processing capability of a power supply system of a power supply company is realized. The power supply company generally establishes a special power protection group in the power protection task, but at present, the task execution of the power protection group is lack of assessment, and only whether the power protection task is completed or not is taken as a unique assessment standard. Therefore, the power protection group cannot timely know which problems exist in the power protection task execution, and therefore cannot timely improve the power protection task execution, and the power protection capability is not promoted. In the power conservation task, sufficient and proper preparation of the spare parts is an important task, the condition of the spare parts is evaluated and examined, whether the management capability of a power conservation group on the spare parts is qualified or not can be reflected, and better guarantee is provided for the power conservation task.
Chinese patent CN 203118047U, open 2013, 8, 7, transformer equipment spare part intelligent storage management system, including transformer equipment spare part, the last electronic tags that has pasted of transformer equipment spare part, electronic tags and electronic tags reader communication connection, electronic tags reader and host computer communication connection. The system takes a radio frequency electronic tag technology as a core, takes a computer network as a basis, and takes intelligent management as a means, so that the refined management of local spare parts can be realized, the dynamic arrangement of storage, shipment and the like of the spare parts can be realized, and the electronic operation can be performed on the whole process of a warehousing operation flow. It can count and manage the spare parts on line, but can not make the aassessment whether the spare part inventory is reasonable.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: currently, an evaluation system for the preparation condition of spare parts in the power-saving task is lacked. Provides an electricity-preserving spare part evaluation method comprehensively considering spare part foot preparation rate and spare part station selection rationality.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a power-saving spare part evaluation method comprises the following steps: A) importing a power grid topological structure and a power protection client, and obtaining a power protection target equipment set by adopting a breadth first method; B) leading in a road network, leading in the positions of the electricity-protecting target equipment and the spare part station in the road network, and leading in the spare part station to store spare parts; C) evaluating the completeness rate of the spare parts; D) and evaluating the reasonable rate of the spare station selection. The method for obtaining the power-conserving target equipment set by adopting the breadth-first method comprises the following steps: and by adopting an exhaustive method with breadth first, finding out the power supply lines of the power protection task customers in a first-level and first-level manner, and then bringing all power supply equipment on the power supply lines of the power protection task customers into a power protection target equipment set.
Preferably, the performing of the evaluation of the completeness of spare parts comprises the following steps: CA1) reading all the power-saving target equipment models and the stock spare model of the spare station; CA2) sequentially searching for spare parts with the same model and replaceable model in the spare part station inventory spare parts according to the model of the power-saving target equipment, counting the successful number of model matching if the spare parts with the same model or the replaceable model are found, and counting the failed number of model matching if the spare parts with the same model or the replaceable model are found; CA3) takes the percentage of the match success number to the total power-conserving target device model as the spare parts completion rate.
Preferably, the performing of the evaluation of the completeness of spare parts comprises the following steps: CB1) carries out importance grading on all the power-saving target equipment, wherein the importance grade is 1-3 grade, and the higher the grade is, the higher the importance is; CB2) importing the historical fault rates of all the power-conserving target equipment models, and if the fault rates are higher than a set threshold value, improving the importance levels of the corresponding models by one level; CB3) reading all the power-saving target equipment models and the stock spare model of the spare station; CB4) sequentially searching spare parts with the same model and the replaceable model in the spare part station stock spare parts according to the model of the power-preserving target equipment, counting the successful number of matching if the spare parts with the same model or the replaceable model are found and the total number of the spare parts with the same model and the replaceable model is greater than or equal to the importance level of the power-preserving target equipment, and counting the failed number of matching if the total number of the spare parts with the same model and the replaceable model is not less than the importance level of the power-preserving target equipment; CB5) takes the percentage of the matching success number to the total power-saving target equipment model as the spare part completion rate.
Preferably, the performing of the evaluation of the completeness of spare parts comprises the following steps: CC1) reading all the power-saving target equipment models and the stock spare model of the spare station; CC2) calculating the spare parts foot rate of each power-saving target equipment model in turn; CC3) takes the occupation ratio of the power-conserving target device models with the reserve foot rate higher than the set threshold value in all the power-conserving target device models as the reserve item full rate. The set threshold value is related to the power-saving task grade, the recommended value range of the set threshold value is 78% -96%, and the higher the power-saving task grade is, the larger value is. The recommended highest-level power-keeping task takes 96%, the lowest-level power-keeping task takes 78%, and the power-keeping tasks of other levels take intermediate values.
Preferably, the method for calculating the spare parts foot preparation rate of the power-saving target equipment model comprises the following steps: c' A1) according to the model of the power-saving target equipment, searching the spare parts with the same model and the spare parts with the alternative models in the spare part station inventory spare parts, and recording the number of the found spare parts as NA1(ii) a C' A2) according to the model of the power-conserving target equipment, searching the power-conserving target equipment with the same model in the power-conserving target equipment set, and recording the number of the found power-conserving target equipment as NA2(ii) a C' A3) calculating a spare part foot rate xi of the power-saving target equipment model according to the following formula:
wherein a is a set constant less than 1, and the value is larger than the rated power of the model of the power-keeping target equipmentThe small value is related to the historical fault rate, and the larger the rated power and the historical fault rate are, the larger the corresponding a is. The value of a is in direct proportion to the rated power and the historical fault rate, and is in inverse proportion to the average value of the rated power of all the power-protection target equipment.
Preferably, the method for calculating the spare parts foot preparation rate of the power-saving target equipment model comprises the following steps: c' B1) carrying out importance grading on all the power-saving target equipment, wherein the importance grade is 1-3 grade, and the importance is higher when the grade is higher; c' B2) according to the model of the power-saving target equipment, searching the spare parts with the same model and the spare parts with the alternative models in the spare part station inventory spare parts, and recording the number of the found spare parts as NA1(ii) a C' B3) according to the model of the power-conserving target equipment, searching the power-conserving target equipment with the same model in the power-conserving target equipment set, and recording the number of the found power-conserving target equipment as NA2(ii) a C' B4) calculating a spare part foot rate xi of the power-saving target equipment model according to the following formula:
and a ' is a set constant less than 1, the value of the a ' is related to the rated power of the model of the power-saving target equipment and the historical fault rate, and the larger the rated power and the historical fault rate are, the larger the corresponding a ' is. Wherein the value of a' is in direct proportion to the rated power and the historical fault rate, and in inverse proportion to the average value of the rated power of all the power-preserving target devices.
Preferably, the evaluating the rationality of the alternative station comprises the following steps: DA1) reading all the power-saving target equipment models and the stock spare model of the spare station; DA2) selecting a spare part as a current spare part, and finding out all power-preserving target equipment with the same model as the current spare part and replaceable current spare parts from the power-preserving target equipment set to form an available set of the current spare part; DA3) selecting a spare station, and calculating the total length of the road between the spare station and all the electricity-preserving target devices in the available set as the distance between the spare station and the available set; DA4), repeating the step DA3 until all the spare station are traversed once, selecting the spare station with the minimum distance from the available set as the optimal station of the current spare, and counting the reasonable number of the spare in the station if the current spare is positioned at the optimal station; DA5) repeating the steps DA2-DA4 until all the spare parts are traversed once, and taking the percentage of the station selection reasonable spare part number to the total spare part number as the station selection reasonable rate.
Preferably, the evaluating the rationality of the alternative station comprises the following steps: DB1) performing importance grading on all the power-saving target equipment, wherein the importance grade is 1-3 grade, and the importance is higher when the grade is higher; DB2) reading all the power-saving target equipment models and the stock spare model of the spare station; DB3) selecting one spare product as a current spare product, and finding out all the power-preserving target devices with the same model as the current spare product and replaceable current spare products from the power-preserving target device set to form an available set of the current spare product; DB4), obtaining the total length of the road between the spare station and all the electricity-conserving target devices in the available set, subtracting 1 from the importance level of all the electricity-conserving target devices in the available set, and deleting the electricity-conserving target devices with the importance level of 0 to obtain a new available set; DB5) repeating the step DB4 until the available set is an empty set, and adding the total lengths obtained by each calculation as the distance between the spare station and the available set; DB6) repeating the steps DB4-DB5 until all the spare stations are traversed once, selecting the spare station with the minimum distance from the available set as the optimal station of the current spare, and counting the reasonable number of the spare at the station if the current spare is positioned at the optimal station; DB7) repeating the steps DB2-DB6 until all the spare parts are traversed once, and taking the percentage of the reasonable spare parts in the station selection to the total spare parts as the reasonable rate of the station selection.
Preferably, the importance ranking of all the power-saving target devices comprises the following steps: E1) obtaining distribution lines of all power protection users by adopting a traceability method; E2) dividing a distribution line into two sections, wherein the distribution line connected with only one power protection user is divided into a first section, and the distribution line connected with two or more power protection users is divided into a second section; E3) the importance level of the power-maintaining target equipment on the first section distribution line is level 2, the importance level of the power-maintaining target equipment on the second section distribution line is level 3, and the importance level of the power-maintaining target equipment inside the power-maintaining user is level 1. The method for obtaining the power-conserving target equipment set by adopting the traceability method comprises the following steps: and by adopting an exhaustive method with breadth first, finding out the power supply lines of the power protection task customers in a first-level and first-level manner, and then bringing all power supply equipment on the power supply lines of the power protection task customers into a power protection target equipment set.
The substantial effects of the invention are as follows: by comprehensively considering the spare parts foot preparation rate and the rationality of the spare parts station selection, the preparation condition of the power-saving spare parts can be evaluated, and whether the preparation of the power-saving spare parts is sufficient and reasonable is reflected.
Drawings
Fig. 1 is a flow chart of a power-saving spare part evaluation method.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
As shown in fig. 1, a flow chart of a method for evaluating a power reserve includes the following steps: A) importing a power grid topological structure and a power protection client, and obtaining a power protection target equipment set by adopting a breadth first method; B) leading in a road network, leading in the positions of the electricity-protecting target equipment and the spare part station in the road network, and leading in the spare part station to store spare parts; C) evaluating the completeness rate of the spare parts; D) and evaluating the reasonable rate of the spare station selection. The method for obtaining the power-conserving target equipment set by adopting the breadth-first method comprises the following steps: and by adopting an exhaustive method with breadth first, finding out the power supply lines of the power protection task customers in a first-level and first-level manner, and then bringing all power supply equipment on the power supply lines of the power protection task customers into a power protection target equipment set.
As a preferred embodiment, performing a full spare part rate assessment comprises the steps of: CA1) reading all the power-saving target equipment models and the stock spare model of the spare station; CA2) sequentially searching for spare parts with the same model and replaceable model in the spare part station inventory spare parts according to the model of the power-saving target equipment, counting the successful number of model matching if the spare parts with the same model or the replaceable model are found, and counting the failed number of model matching if the spare parts with the same model or the replaceable model are found; CA3) takes the percentage of the match success number to the total power-conserving target device model as the spare parts completion rate.
As a preferred embodiment, performing a full spare part rate assessment comprises the steps of: CB1) carries out importance grading on all the power-saving target equipment, wherein the importance grade is 1-3 grade, and the higher the grade is, the higher the importance is; CB2) importing the historical fault rates of all the power-conserving target equipment models, and if the fault rates are higher than a set threshold value, improving the importance levels of the corresponding models by one level; CB3) reading all the power-saving target equipment models and the stock spare model of the spare station; CB4) sequentially searching spare parts with the same model and the replaceable model in the spare part station stock spare parts according to the model of the power-preserving target equipment, counting the successful number of matching if the spare parts with the same model or the replaceable model are found and the total number of the spare parts with the same model and the replaceable model is greater than or equal to the importance level of the power-preserving target equipment, and counting the failed number of matching if the total number of the spare parts with the same model and the replaceable model is not less than the importance level of the power-preserving target equipment; CB5) takes the percentage of the matching success number to the total power-saving target equipment model as the spare part completion rate.
As a preferred embodiment, performing a full spare part rate assessment comprises the steps of: CC1) reading all the power-saving target equipment models and the stock spare model of the spare station; CC2) calculating the spare parts foot rate of each power-saving target equipment model in turn; CC3) takes the occupation ratio of the power-conserving target device models with the reserve foot rate higher than the set threshold value in all the power-conserving target device models as the reserve item full rate. The set threshold value is related to the power-saving task grade, the recommended value range of the set threshold value is 78% -96%, and the higher the power-saving task grade is, the larger value is. The recommended highest-level power-keeping task takes 96%, the lowest-level power-keeping task takes 78%, and the power-keeping tasks of other levels take intermediate values.
As a preferred embodiment, the method for calculating the spare parts foot preparation rate of the power-conserving target device model comprises the following steps: c' A1) according to the model of the power-saving target equipment, searching the spare parts with the same model and the spare parts with the alternative models in the spare part station inventory spare parts, and recording the number of the found spare parts as NA1(ii) a C' A2) according to the model of the power-conserving target equipment, searching the power-conserving target equipment with the same model in the power-conserving target equipment set, and recording the number of the found power-conserving target equipment as NA2(ii) a C' A3) calculating a spare part foot rate xi of the power-saving target equipment model according to the following formula:
and a is a set constant less than 1, the value of a is related to the rated power of the model of the power-saving target equipment and the historical fault rate, and the larger the rated power and the historical fault rate is, the larger the corresponding value of a is. The value of a is in direct proportion to the rated power and the historical fault rate, and is in inverse proportion to the average value of the rated power of all the power-protection target equipment.
As a preferred embodiment, the method for calculating the spare parts foot preparation rate of the power-conserving target device model comprises the following steps: c' B1) carrying out importance grading on all the power-saving target equipment, wherein the importance grade is 1-3 grade, and the importance is higher when the grade is higher; c' B2) according to the model of the power-saving target equipment, searching the spare parts with the same model and the spare parts with the alternative models in the spare part station inventory spare parts, and recording the number of the found spare parts as NA1(ii) a C' B3) according to the model of the power-conserving target equipment, searching the power-conserving target equipment with the same model in the power-conserving target equipment set, and recording the number of the found power-conserving target equipment as NA2(ii) a C' B4) calculating a spare part foot rate xi of the power-saving target equipment model according to the following formula:
and a ' is a set constant less than 1, the value of the a ' is related to the rated power of the model of the power-saving target equipment and the historical fault rate, and the larger the rated power and the historical fault rate are, the larger the corresponding a ' is. Wherein the value of a' is in direct proportion to the rated power and the historical fault rate, and in inverse proportion to the average value of the rated power of all the power-preserving target devices.
As a preferred embodiment, the evaluation of the alternate station rationality comprises the following steps: DA1) reading all the power-saving target equipment models and the stock spare model of the spare station; DA2) selecting a spare part as a current spare part, and finding out all power-preserving target equipment with the same model as the current spare part and replaceable current spare parts from the power-preserving target equipment set to form an available set of the current spare part; DA3) selecting a spare station, and calculating the total length of the road between the spare station and all the electricity-preserving target devices in the available set as the distance between the spare station and the available set; DA4), repeating the step DA3 until all the spare station are traversed once, selecting the spare station with the minimum distance from the available set as the optimal station of the current spare, and counting the reasonable number of the spare in the station if the current spare is positioned at the optimal station; DA5) repeating the steps DA2-DA4 until all the spare parts are traversed once, and taking the percentage of the station selection reasonable spare part number to the total spare part number as the station selection reasonable rate.
As a preferred embodiment, the evaluation of the alternate station rationality comprises the following steps: DB1) performing importance grading on all the power-saving target equipment, wherein the importance grade is 1-3 grade, and the importance is higher when the grade is higher; DB2) reading all the power-saving target equipment models and the stock spare model of the spare station; DB3) selecting one spare product as a current spare product, and finding out all the power-preserving target devices with the same model as the current spare product and replaceable current spare products from the power-preserving target device set to form an available set of the current spare product; DB4), obtaining the total length of the road between the spare station and all the electricity-conserving target devices in the available set, subtracting 1 from the importance level of all the electricity-conserving target devices in the available set, and deleting the electricity-conserving target devices with the importance level of 0 to obtain a new available set; DB5) repeating the step DB4 until the available set is an empty set, and adding the total lengths obtained by each calculation as the distance between the spare station and the available set; DB6) repeating the steps DB4-DB5 until all the spare stations are traversed once, selecting the spare station with the minimum distance from the available set as the optimal station of the current spare, and counting the reasonable number of the spare at the station if the current spare is positioned at the optimal station; DB7) repeating the steps DB2-DB6 until all the spare parts are traversed once, and taking the percentage of the reasonable spare parts in the station selection to the total spare parts as the reasonable rate of the station selection.
As a preferred embodiment, the ranking of importance of all the power-conserving target devices comprises the following steps: E1) obtaining distribution lines of all power protection users by adopting a traceability method; E2) dividing a distribution line into two sections, wherein the distribution line connected with only one power protection user is divided into a first section, and the distribution line connected with two or more power protection users is divided into a second section; E3) the importance level of the power-maintaining target equipment on the first section distribution line is level 2, the importance level of the power-maintaining target equipment on the second section distribution line is level 3, and the importance level of the power-maintaining target equipment inside the power-maintaining user is level 1. The method for obtaining the power-conserving target equipment set by adopting the traceability method comprises the following steps: and by adopting an exhaustive method with breadth first, finding out the power supply lines of the power protection task customers in a first-level and first-level manner, and then bringing all power supply equipment on the power supply lines of the power protection task customers into a power protection target equipment set.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (4)
1. A method for evaluating a power-saving spare part is characterized in that,
the method comprises the following steps:
A) importing a power grid topological structure and a power protection client, and obtaining a power protection target equipment set by adopting a breadth first method;
B) leading in a road network, leading in the positions of the electricity-protecting target equipment and the spare part station in the road network, and leading in the spare part station to store spare parts;
C) evaluating the completeness rate of the spare parts;
D) carrying out station selection reasonable rate evaluation on the spare products;
the evaluation of the complete spare parts rate comprises the following steps:
CC1) reading all the power-saving target equipment models and the stock spare model of the spare station;
CC2) calculating the spare parts foot rate of each power-saving target equipment model in turn;
CC3) taking the occupation ratio of the power-conserving target equipment models with the reserve foot rate higher than the set threshold value in all the power-conserving target equipment models as the reserve share rate;
the method for calculating the spare part foot preparation rate of the power-saving target equipment model comprises the following steps of:
c' A1) according to the model of the power-saving target equipment, searching the spare parts with the same model and the spare parts with the alternative models in the spare part station inventory spare parts, and recording the number of the found spare parts as NA1；
C' A2) according to the model of the power-conserving target equipment, searching the power-conserving target equipment with the same model in the power-conserving target equipment set, and recording the number of the found power-conserving target equipment as NA2；
C' A3) calculating a spare part foot rate xi of the power-saving target equipment model according to the following formula:
a is a set constant less than 1, the value of a is related to the rated power of the model of the power-saving target equipment and the historical fault rate, and the larger the rated power and the historical fault rate is, the larger the corresponding a is;
the method for evaluating the rationality of the alternative station comprises the following steps:
DB1) performing importance grading on all the power-saving target equipment, wherein the importance grade is 1-3 grade, and the importance is higher when the grade is higher;
DB2) reading all the power-saving target equipment models and the stock spare model of the spare station;
DB3) selecting one spare product as a current spare product, and finding out all the power-preserving target devices with the same model as the current spare product and replaceable current spare products from the power-preserving target device set to form an available set of the current spare product;
DB4), obtaining the total length of the road between the spare station and all the electricity-conserving target devices in the available set, subtracting 1 from the importance level of all the electricity-conserving target devices in the available set, and deleting the electricity-conserving target devices with the importance level of 0 to obtain a new available set;
DB5) repeating the step DB4 until the available set is an empty set, and adding the total lengths obtained by each calculation as the distance between the spare station and the available set;
DB6) repeating the steps DB4-DB5 until all the spare stations are traversed once, selecting the spare station with the minimum distance from the available set as the optimal station of the current spare, and counting the reasonable number of the spare at the station if the current spare is positioned at the optimal station;
DB7) repeating the steps DB2-DB6 until all the spare parts are traversed once, and taking the percentage of the reasonable spare parts in the station selection to the total spare parts as the reasonable rate of the station selection.
2. The method according to claim 1, wherein the evaluation of the power reserve,
alternatively, the performing the full-scale spare part rate evaluation may further include the steps of:
CA1) reading all the power-saving target equipment models and the stock spare model of the spare station;
CA2) sequentially searching for spare parts with the same model and replaceable model in the spare part station inventory spare parts according to the model of the power-saving target equipment, counting the successful number of model matching if the spare parts with the same model or the replaceable model are found, and counting the failed number of model matching if the spare parts with the same model or the replaceable model are found;
CA3) takes the percentage of the match success number to the total power-conserving target device model as the spare parts completion rate.
3. The method according to claim 1, wherein the evaluation of the power reserve,
alternatively, the performing the full-scale spare part rate evaluation may further include the steps of:
CB1) carries out importance grading on all the power-saving target equipment, wherein the importance grade is 1-3 grade, and the higher the grade is, the higher the importance is;
CB2) importing the historical fault rates of all the power-conserving target equipment models, and if the fault rates are higher than a set threshold value, improving the importance levels of the corresponding models by one level;
CB3) reading all the power-saving target equipment models and the stock spare model of the spare station;
CB4) sequentially searching spare parts with the same model and the replaceable model in the spare part station stock spare parts according to the model of the power-preserving target equipment, counting the successful number of matching if the spare parts with the same model or the replaceable model are found and the total number of the spare parts with the same model and the replaceable model is greater than or equal to the importance level of the power-preserving target equipment, and counting the failed number of matching if the total number of the spare parts with the same model and the replaceable model is not less than the importance level of the power-preserving target equipment;
CB5) takes the percentage of the matching success number to the total power-saving target equipment model as the spare part completion rate.
4. The method according to claim 1, wherein the evaluation of the power reserve,
the importance grading of all the power-saving target equipment comprises the following steps:
E1) obtaining distribution lines of all power protection users by adopting a traceability method;
E2) dividing a distribution line into two sections, wherein the distribution line connected with only one power protection user is divided into a first section, and the distribution line connected with two or more power protection users is divided into a second section;
E3) the importance level of the power-maintaining target equipment on the first section distribution line is level 2, the importance level of the power-maintaining target equipment on the second section distribution line is level 3, and the importance level of the power-maintaining target equipment inside the power-maintaining user is level 1.
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