CN113408928A - Power distribution automation terminal evaluation method and system - Google Patents
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Abstract
The invention provides a power distribution automation terminal evaluation method and a system, wherein the method comprises the following steps: establishing an evaluation index domain of the power distribution automation terminal according to the requirements of the power distribution automation system; establishing a judgment matrix through an analytic hierarchy process to obtain the weight of the importance degree of the indexes in the evaluation index domain; constructing a comprehensive evaluation index standard domain of the distribution automation terminal according to the evaluation index domain of the distribution automation terminal; obtaining objective weight of the comprehensive evaluation index standard by comparing the conflict between the strength and the comprehensive evaluation index standard through an objective weight assignment method; and synthesizing the index importance degree weight and the objective weight of the comprehensive evaluation index standard to obtain a comprehensive score of the power distribution automation terminal. The method provided by the invention determines each index weight by using an analytic hierarchy process and an objective weight assignment process and obtains a corresponding comprehensive score to obtain an optimal power distribution automatic terminal evaluation scheme, thereby improving the accuracy of power distribution automatic terminal evaluation.
Description
Technical Field
The invention relates to the technical field of distribution automation, in particular to a method and a system for evaluating a distribution automation terminal.
Background
At present, the fault of a power distribution system is the main reason that a user suffers from power failure, the technical mode for improving the power supply reliability is to improve the distribution network automation degree, and the core of the distribution network automation is the distribution network automation technology. The distribution network automation system consists of a main station, a communication network and a terminal device. The terminal device of the distribution network automation system is generally called as a distribution automation terminal or a distribution network automation terminal, and is used for monitoring and controlling a switching station, a recloser, an on-column section switch, a ring main unit, a distribution transformer, a line voltage regulator and a reactive compensation capacitor in a medium-voltage distribution network, communicating with a distribution network automation main station, providing data required by operation control and management of the distribution network, and executing an instruction given by the main station to adjust and control distribution network equipment. The power distribution terminal is a basic component unit of a distribution network automation system, and the performance and reliability of the power distribution terminal directly influence whether the whole system can effectively play a role. Due to the fact that the types of faults and required detection parameters are different due to different power distribution frames and different application scenes, for example, closed-loop testing, three-remote testing, fault waveform inversion and the like of power distribution terminals, different types of power distribution terminals have different hardware conditions and detection capabilities. In order to deal with different fault types, it is necessary to find a distribution automation terminal with the highest comprehensive evaluation to test the intelligent distribution automation technology.
Disclosure of Invention
The invention provides a power distribution automation terminal evaluation method and a system, firstly, aiming at a layer of index weight of technical conditions, hardware conditions and fault detection capability, a judgment matrix is constructed by using an AHP method; and then obtaining a layer of weight on the premise of meeting the consistency test. Determining an objective weight coefficient of the index by using an objective weight assignment method and on the basis of the conflict between the contrast strength and the evaluation index to obtain a second-layer index weight; and establishing a power distribution automation terminal evaluation index, normalizing the data, and calculating comprehensive scores of different power distribution terminals to obtain the power distribution automation terminal evaluation method.
The invention provides a power distribution automation terminal evaluation method in a first aspect, which comprises the following steps:
establishing an evaluation index domain of the power distribution automation terminal according to the requirements of the power distribution automation system;
establishing a judgment matrix through an analytic hierarchy process to obtain the weight of the importance degree of the indexes in the evaluation index domain;
constructing a comprehensive evaluation index standard domain of the distribution automation terminal according to the evaluation index domain of the distribution automation terminal;
obtaining objective weight of the comprehensive evaluation index standard by comparing the conflict between the strength and the comprehensive evaluation index standard through an objective weight assignment method;
and synthesizing the index importance degree weight and the objective weight of the comprehensive evaluation index standard to obtain a comprehensive score of the power distribution automation terminal.
Further, the evaluation index field of the distribution automation terminal includes: a target layer, a decision layer and a scheme layer;
wherein the decision layer comprises: technical indexes, fault detection indexes and hardware condition indexes; the technical indexes comprise: the working environment temperature, the data transmission speed, the application environment requirement and the working power supply requirement, the fault detection index includes: remote control test capability, data wireless transmission and PLC automatic isolation, the hardware condition index includes: volume, power consumption, and capacity.
Further, the establishing of the judgment matrix by the analytic hierarchy process includes:
and aiming at the technical indexes, the fault detection indexes and the hardware condition indexes in the decision layer, constructing a comparison matrix of the indexes based on expert experience, and carrying out consistency check on the comparison matrix, wherein the comparison matrix which is successfully subjected to the consistency check is a judgment matrix.
Further, the evaluation index domain of the distribution automation terminal is as follows:
X＝{xij}n×m；
wherein X is an evaluation index field, XijThe method comprises the steps of obtaining a jth comprehensive evaluation index of an ith distribution automation terminal, obtaining a jth comprehensive evaluation index of the jth distribution automation terminal, obtaining n of the number of the distribution automation terminals to be selected, and obtaining m of the number of the evaluation indexes.
Further, the comprehensive evaluation index standard domain is as follows:
S＝Sjk；
j＝1,2,…m；
k＝1,2,3,4；
wherein S is a comprehensive evaluation index standard domain, j is the line number of the standard domain, m is the maximum line number of the standard domain, k is the column number of the standard domain, and SjkIs the comprehensive evaluation index of the jth row and the kth column.
Further, the obtaining of the objective weight of the comprehensive evaluation index standard through the conflict between the objective weight assignment method contrast strength and the comprehensive evaluation index standard includes:
calculating the coefficient of each index quality inspection;
calculating the conflict quantization index of the jth index and other indexes according to the coefficient of the quality inspection of each index;
calculating the standard deviation of the jth index;
calculating the information content contained in the jth index according to the coefficient of the quality inspection of each index and the standard deviation of the jth index;
and calculating the weight of the jth index according to the information content contained in the jth index.
Further, the composite score is calculated by the following formula:
wherein, SCOREiIs the composite score, gamma, of the ith terminaljIs the index importance degree weight of the jth index, wjObjective weight of the comprehensive evaluation index standard of the jth index, Xstandard_ijAnd m is the score value of the jth index of the ith terminal, and the maximum line number of the standard domain.
A second aspect of the present invention provides a power distribution automation terminal evaluation system, including:
the evaluation index domain establishing module is used for establishing an evaluation index domain of the distribution automation terminal according to the requirements of the distribution automation system;
the index importance degree weight generation module is used for establishing a judgment matrix through an analytic hierarchy process to obtain the index importance degree weight in the evaluation index domain;
the comprehensive evaluation index standard domain establishing module is used for establishing a comprehensive evaluation index standard domain of the distribution automation terminal according to the evaluation index domain of the distribution automation terminal;
the objective weight generation module of the comprehensive evaluation index standard is used for comparing the conflict between the intensity and the comprehensive evaluation index standard by an objective weight assignment method to obtain the objective weight of the comprehensive evaluation index standard;
and the comprehensive scoring module is used for integrating the index importance degree weight and the objective weight of the comprehensive evaluation index standard to obtain the comprehensive scoring of the power distribution automation terminal.
Further, the evaluation index field of the distribution automation terminal includes: a target layer, a decision layer and a scheme layer;
wherein the decision layer comprises: technical indexes, fault detection indexes and hardware condition indexes; the technical indexes comprise: the working environment temperature, the data transmission speed, the application environment requirement and the working power supply requirement, the fault detection index includes: remote control test capability, data wireless transmission and PLC automatic isolation, the hardware condition index includes: volume, power consumption, and capacity.
Further, the establishing of the judgment matrix by the analytic hierarchy process includes:
and aiming at the technical indexes, the fault detection indexes and the hardware condition indexes in the decision layer, constructing a comparison matrix of the indexes based on expert experience, and carrying out consistency check on the comparison matrix, wherein the comparison matrix which is successfully subjected to the consistency check is a judgment matrix.
Further, the evaluation index domain of the distribution automation terminal is as follows:
X＝{xij}n×m；
wherein X is an evaluation index field, XijThe method comprises the steps of obtaining a jth comprehensive evaluation index of an ith distribution automation terminal, obtaining a jth comprehensive evaluation index of the jth distribution automation terminal, obtaining n of the number of the distribution automation terminals to be selected, and obtaining m of the number of the evaluation indexes.
Further, the comprehensive evaluation index standard domain is as follows:
S＝Sjk；
j＝1,2,…m；
k＝1,2,3,4；
wherein S is a comprehensive evaluation index standard domain, j is the line number of the standard domain, m is the maximum line number of the standard domain, k is the column number of the standard domain, and SjkIs the comprehensive evaluation index of the jth row and the kth column.
Further, the obtaining of the objective weight of the comprehensive evaluation index standard through the conflict between the objective weight assignment method contrast strength and the comprehensive evaluation index standard includes:
calculating the coefficient of each index quality inspection;
calculating the conflict quantization index of the jth index and other indexes according to the coefficient of the quality inspection of each index;
calculating the standard deviation of the jth index;
calculating the information content contained in the jth index according to the coefficient of the quality inspection of each index and the standard deviation of the jth index;
and calculating the weight of the jth index according to the information content contained in the jth index.
Further, the composite score is calculated by the following formula:
wherein, SCOREiIs the composite score, gamma, of the ith terminaljIs the index importance degree weight of the jth index, wjObjective weight of the comprehensive evaluation index standard of the jth index, Xstandard_ijAnd m is the score value of the jth index of the ith terminal, and the maximum line number of the standard domain.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
the invention provides a power distribution automation terminal evaluation method and a system, wherein the method comprises the following steps: establishing an evaluation index domain of the power distribution automation terminal according to the requirements of the power distribution automation system; establishing a judgment matrix through an analytic hierarchy process to obtain the weight of the importance degree of the indexes in the evaluation index domain; constructing a comprehensive evaluation index standard domain of the distribution automation terminal according to the evaluation index domain of the distribution automation terminal; obtaining objective weight of the comprehensive evaluation index standard by comparing the conflict between the strength and the comprehensive evaluation index standard through an objective weight assignment method; and synthesizing the index importance degree weight and the objective weight of the comprehensive evaluation index standard to obtain a comprehensive score of the power distribution automation terminal. The method provided by the invention determines each index weight by using an analytic hierarchy process and an objective weight assignment process and obtains a corresponding comprehensive score to obtain an optimal power distribution automatic terminal evaluation scheme, thereby improving the accuracy of power distribution automatic terminal evaluation.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a power distribution automation terminal evaluation method according to an embodiment of the present invention;
fig. 2 is a flowchart of a power distribution automation terminal evaluation method according to another embodiment of the present invention;
fig. 3 is a device diagram of a distribution automation terminal evaluation system according to an embodiment of the present invention;
fig. 4 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
It should be understood that the step numbers used herein are for convenience of description only and are not intended as limitations on the order in which the steps are performed.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises" and "comprising" indicate the presence of the described features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The term "and/or" refers to and includes any and all possible combinations of one or more of the associated listed items.
A first aspect.
Referring to fig. 1, the present invention provides a method for evaluating a distribution automation terminal, including:
and S10, establishing an evaluation index domain of the distribution automation terminal according to the requirements of the distribution automation system.
In one embodiment, the evaluation index field of the distribution automation terminal includes: a target layer, a decision layer and a scheme layer;
wherein the decision layer comprises: technical indexes, fault detection indexes and hardware condition indexes; the technical indexes comprise: the working environment temperature, the data transmission speed, the application environment requirement and the working power supply requirement, the fault detection index includes: remote control test capability, data wireless transmission and PLC automatic isolation, the hardware condition index includes: volume, power consumption, and capacity.
In a specific embodiment, the evaluation index field of the distribution automation terminal is:
X＝{xij}n×m；
wherein X is an evaluation index field, XijThe method comprises the steps of obtaining a jth comprehensive evaluation index of an ith distribution automation terminal, obtaining a jth comprehensive evaluation index of the jth distribution automation terminal, obtaining n of the number of the distribution automation terminals to be selected, and obtaining m of the number of the evaluation indexes.
And S20, establishing a judgment matrix through an analytic hierarchy process to obtain the weight of the importance degree of the index in the evaluation index domain.
In a specific embodiment, the establishing a judgment matrix by an analytic hierarchy process includes:
and aiming at the technical indexes, the fault detection indexes and the hardware condition indexes in the decision layer, constructing a comparison matrix of the indexes based on expert experience, and carrying out consistency check on the comparison matrix, wherein the comparison matrix which is successfully subjected to the consistency check is a judgment matrix.
And S30, constructing a comprehensive evaluation index standard domain of the distribution automation terminal according to the evaluation index domain of the distribution automation terminal.
In a specific embodiment, the comprehensive evaluation index standard domain is:
S＝Sjk；
j＝1,2,…m；
k＝1,2,3,4；
wherein S is a comprehensive evaluation index standard domain, j is the line number of the standard domain, m is the maximum line number of the standard domain, k is the column number of the standard domain, and SjkIs the comprehensive evaluation index of the jth row and the kth column.
And S40, comparing the conflict between the strength and the comprehensive evaluation index standard by an objective weight assignment method to obtain the objective weight of the comprehensive evaluation index standard.
In a specific embodiment, the obtaining the objective weight of the comprehensive evaluation index standard through the conflict between the objective weight assignment method and the comparison strength and the comprehensive evaluation index standard includes:
calculating the coefficient of each index quality inspection;
calculating the conflict quantization index of the jth index and other indexes according to the coefficient of the quality inspection of each index;
calculating the standard deviation of the jth index;
calculating the information content contained in the jth index according to the coefficient of the quality inspection of each index and the standard deviation of the jth index;
and calculating the weight of the jth index according to the information content contained in the jth index.
And S50, synthesizing the index importance degree weight and the objective weight of the comprehensive evaluation index standard to obtain a comprehensive score of the distribution automation terminal.
In one embodiment, the composite score is calculated by the following formula:
wherein, SCOREiIs the composite score, gamma, of the ith terminaljIs the index importance degree weight of the jth index, wjObjective weight of the comprehensive evaluation index standard of the jth index, Xstandard_ijAnd m is the score value of the jth index of the ith terminal, and the maximum line number of the standard domain.
The method provided by the invention determines each index weight by using an analytic hierarchy process and an objective weight assignment process and obtains a corresponding comprehensive score to obtain an optimal power distribution automatic terminal evaluation scheme, thereby improving the accuracy of power distribution automatic terminal evaluation.
In an embodiment, referring to fig. 2, the present invention provides a method for evaluating a distribution automation terminal, including:
step 1: according to the demand of the distribution automation system, establishing a distribution automation terminal evaluation index domain X ═ { X ═ Xij}n×m(ii) a n is the number of the distribution automation terminals to be selected, m is the number of the evaluation indexes, and xijTaking the value of the jth comprehensive evaluation index of the ith power distribution automation terminal;
step 2: establishing a judgment matrix by using an Analytic Hierarchy Process (AHP) to obtain a layer of weights of different index importance degrees;
and step 3: building a comprehensive evaluation index standard domain S ═ (S) of the distribution automation terminaljk) (j ═ 1,2,. m; k is 1,2,3,4), the number of rows in the standard field represents the number m of evaluation indexes, and each column in the standard field represents an evaluation level: respectively poor, medium, good and excellent, corresponding to respective scores of 1,2,3 and 4;
and 4, step 4: and determining an objective weight coefficient of the index by comparing the conflict between the intensity and the evaluation index through an objective weight assignment method (CRITIC) to obtain a two-layer weight.
And 5: and obtaining the comprehensive score of the terminal by combining the weights of the two layers of decision indexes and the score value after index normalization processing.
The specific contents of the evaluation index domain of the distribution automation terminal established in the step 1 are as follows:
a large number of fuzzy factors are involved in the type selection process of the distribution automation terminal, and the distribution automation terminal is personally submittedThe subjective factors have large influence, and the conflict among the indexes is not considered in the decision making process. The evaluation index domain of the power distribution automation terminal comprehensively considers indexes in the aspects of fault detection capability, technicality, hardware conditions and the like, and quantifies qualitative indexes by adopting a grading system. According to the demand of the distribution automation system, establishing a distribution automation terminal evaluation index domain X ═ { X ═ Xij}n×m(ii) a n is the number of the distribution automation terminals to be selected, m is the number of the evaluation indexes, and xijAnd obtaining the value of the jth comprehensive evaluation index of the ith power distribution automation terminal. The decision index system suitable for power distribution automation is adopted as a system process, and the influence of various factors on the result needs to be considered in the decision process. A decision index system for power distribution automation terminal model selection is constructed according to the requirements of the power distribution automation system on the power distribution automation terminal, as shown in fig. 1. Fault detection indexes, technical indexes and hardware condition indexes are mainly considered in a decision layer. The technical indexes comprise: the working environment temperature, the data transmission speed, the application environment requirement and the working power supply requirement. Hardware condition indicators include volume, power consumption, and capacity; the fault detection indexes comprise remote regulation testing capability, data wireless transmission capability and PLC automatic isolation capability.
The concrete contents of the index layer weight calculated by the analytic hierarchy process in the step 2 are as follows:
the selection of the distribution automation terminal needs to consider the influence of various factors on the result in the decision process. According to the characteristics of the distribution automation terminal, a fault detection index, a technical index and a hardware condition index are considered in a decision layer.
AHP is a kind of multi-objective decision analysis method combining qualitative and quantitative analysis method, through decomposing the complicated problem into several levels and several factors, make the comparative judgement to the importance degree between two and two indexes, set up the judgement matrix, through calculating the maximum eigenvalue and corresponding eigenvector of the judgement matrix, obtain the weight of the importance degree of different schemes.
(1) Aiming at three indexes of the first-layer decision, constructing a comparison matrix of the indexes according to a 9-level scaling method based on expert experience;
aijand values in the middle of 1-9 and their inverses. a isij1 means that element i and element j have the same importance for the previous level factor; a isij3 indicates that element i is slightly more important than element j; a isij5 means that element i is more important than element j; a isij7 means that element i is much more important than element j; a isij9 indicates that element i is more important than element j; a isij2n, 1,2,3,4 indicates that the importance of the elements i and j is between a and jij2n-1 and aij2n + 1;
(2) and (3) checking the consistency of the comparison matrix:
wherein, CI is a consistency index and is calculated by the following formula, and RI is an average random consistency index. RI can be obtained from Table 1 when n is 1-9.
Wherein λ ismaxIs the maximum eigenvalue of the matrix.
TABLE 1 average random consistency index RI
In general, when CR <0.1, the contrast matrix is considered to satisfy consistency; if CR is more than or equal to 0.1, the matrix needs to be corrected until the condition is met.
(3) Hierarchical total ordering and weight calculation
After checking the consistency of the matrix, the weight of the data is calculated as:
(4) after normalization processing, the obtained index weight is as follows:
step 3, the specific content of the comprehensive evaluation standard domain of the power distribution automation terminal is established as follows:
the power consumption in the two-layer index can be quantitatively described, and the remote regulation test capability, the data transmission speed and the like can only be qualitatively described and cannot be described by quantitative data. For analysis, the power distribution automation test process is quantified (e.g., the volume length, width and height are all less than 200, the length, width and height are all more than 200, the length, width and height are less than 500, and the length, width and height are more than 1000) according to the importance of the power distribution automation test process. And the magnitude order and dimension among different indexes are poor, and normalization processing is needed. Xstandard_ijThe score value of the jth index of the ith terminal is calculated as follows:
for the ith terminal, the higher the jth index is, the better the jth index is, the following formula is adopted:
secondly, if the j < th > index is as low as possible for the i < th > terminal, the following formula is adopted:
in the formula, maxjXijThe maximum value of j indexes of all terminals; minjXijThe minimum value of j-th indexes of all terminals.
Step 4, obtaining the specific contents of the two-layer weight through an objective weight assignment method, wherein the specific contents of the two-layer weight are as follows:
the technical indexes comprise the temperature of the working environment, the data transmission speed, the requirements of the application environment and the requirements of the working power supply. Hardware condition indicators include volume, power consumption, and capacity; the fault detection indexes comprise remote regulation testing capability, data wireless transmission capability and PLC automatic isolation capability.
The objective weight assignment method determines an objective weight coefficient of an index by comparing the strength with the conflict between the evaluation indexes. The method combines the relevance and the information quantity of the indexes to give the weight to the indexes, wherein the relevance and the information quantity of the indexes are reflected by the conflict and the discrimination of the indexes respectively. The conflict of the indexes is measured by using a correlation coefficient, namely the larger the correlation coefficient is, the stronger the correlation between the indexes is, the lower the conflict is, which shows that the information amount reflected by the two indexes is repeated greatly, and the smaller the weight occupied by the indexes is; the discrimination of the index is measured by the size of standard deviation, which indicates that each evaluated object has value difference under the same index, the larger standard deviation reflects the larger difference of each evaluated object, and thus the larger the information amount reflected by the index is, the larger the weight occupied by the index is. The process of calculating the two-layer weight by using the CRITIC method comprises the following steps:
(1) calculating coefficients among the indexes:
wherein Cov (x, y) is the covariance between indices x and y; var [ x ] is the variance of x; var [ y ] is the variance of y.
(2) And (3) calculating the quantization index of the conflict between the jth index and other indexes:
(3) calculating the standard deviation of the j index:
in the formula (I), the compound is shown in the specification,
is the average of the j-th index.
(4) Calculating the information amount c contained in the jth evaluation indexjComprises the following steps:
(5) calculating the weight of the jth evaluation index as follows:
step 5, calculating the comprehensive grading concrete content of the terminal:
the comprehensive evaluation of the terminal is obtained by integrating the weights of two layers of decision indexes and combining the index parameters after the indexes of various types of terminals are quantized:
SCOREi is the comprehensive score of the ith terminal; gamma rayjA layer of weights for the jth index; w is ajA second level weight for the jth index; xstandard_ijIs the score value of the j index of the i terminal. And comparing the comprehensive score condition of each terminal with the actual delivery condition to obtain the evaluation conclusion of the distribution automation terminal based on the AHP and CRITIC method.
In another embodiment, a method for evaluating a distribution automation terminal includes the steps of:
step 1, establishing a judgment matrix by using an Analytic Hierarchy Process (AHP) to obtain a layer of weight:
constructing a judgment matrix A for a layer of decision indexes according to a nine-level scaling method as follows:
the constructed matrix a is considered to be reasonably assigned as CR < 0.0810<0.1 from the consistency matrix test. The weights of the indexes of the layer obtained by calculation according to the value assignment of A are shown in Table 2
TABLE 2 layer index weights
Step 2, the specific content of the comprehensive evaluation index table of the distribution automation terminal is established as follows:
table 3 parameters of various types of distribution automation terminals
As can be seen from table 3, the power consumption can be quantitatively described, but the remote adjustment test capability, the data transmission speed, etc. can only be qualitatively described, and cannot be described by quantitative data. For the convenience of analysis, the power distribution automation working condition is quantified by scoring the importance of the power distribution automation working condition, and the score is divided into poor (1 score), medium (2 scores), good (3 scores) and good (4 scores).
According to the technical requirements of the distribution automation terminal in the automation application scene, the scoring criteria for each index are shown in table 4.
TABLE 4 index Scoring standards
Indices that could not be quantitatively described in table 3 were quantified according to the scoring criteria in table 4. The quantized data are subjected to non-dimensionalization processing using equations (12) and (13) as score values of the respective indices.
Step 3, obtaining a two-layer weight result through an objective weight assignment method, wherein the two-layer weight result is as follows:
the weight of the two-layer decision index is found according to the CRITIC method steps, and the result is shown in table 5.
TABLE 5 two-tier decision index weights
Step 4, calculating the comprehensive grading specific content of the terminal:
the comprehensive evaluation of the terminal is obtained by integrating the weights of two layers of decision indexes and combining the index parameters after the indexes of various types of terminals are quantized:
TABLE 6 comprehensive scoring for various types of test terminals
As can be seen from table 6, in the distribution automation test terminal, the test terminal DTU has the best comprehensive score, because the DTU has a similar structure to the conventional telecontrol RTU, but is very different from the conventional RTU in function, and the local editable logic control (PLC) function is mainly added, it can be seen that the DTU has the strongest fault detection capability in the four distribution terminals, the technical index is outstanding, the comprehensive score is also high, and the disadvantage is that the DTU has a large volume and poor high temperature and severe cold resistance; the second best is FTU, which verifies that DTU and FTU are two most widely used power distribution terminals in the power distribution terminal, and the two terminals not only satisfy the fault detection capability, but also have good technical indexes, and have the disadvantages of large volume and high power, but also are two most widely used terminals in a power distribution automation system.
A second aspect.
Referring to fig. 3, the present invention provides a power distribution automation terminal evaluation system, including:
and the evaluation index domain establishing module 10 is used for establishing an evaluation index domain of the distribution automation terminal according to the requirements of the distribution automation system.
In one embodiment, the evaluation index field of the distribution automation terminal includes: a target layer, a decision layer and a scheme layer;
wherein the decision layer comprises: technical indexes, fault detection indexes and hardware condition indexes; the technical indexes comprise: the working environment temperature, the data transmission speed, the application environment requirement and the working power supply requirement, the fault detection index includes: remote control test capability, data wireless transmission and PLC automatic isolation, the hardware condition index includes: volume, power consumption, and capacity.
In a specific embodiment, the evaluation index field of the distribution automation terminal is:
X＝{xij}n×m；
wherein X is an evaluation index field, XijThe method comprises the steps of obtaining a jth comprehensive evaluation index of an ith distribution automation terminal, obtaining a jth comprehensive evaluation index of the jth distribution automation terminal, obtaining n of the number of the distribution automation terminals to be selected, and obtaining m of the number of the evaluation indexes.
And the index importance degree weight generation module 20 is configured to establish a judgment matrix through an analytic hierarchy process to obtain an index importance degree weight in the evaluation index domain.
In a specific embodiment, the establishing a judgment matrix by an analytic hierarchy process includes:
and aiming at the technical indexes, the fault detection indexes and the hardware condition indexes in the decision layer, constructing a comparison matrix of the indexes based on expert experience, and carrying out consistency check on the comparison matrix, wherein the comparison matrix which is successfully subjected to the consistency check is a judgment matrix.
And the comprehensive evaluation index standard domain establishing module 30 is configured to establish a comprehensive evaluation index standard domain of the distribution automation terminal according to the evaluation index domain of the distribution automation terminal.
In a specific embodiment, the comprehensive evaluation index standard domain is:
S＝Sjk；
j＝1,2,…m；
k＝1,2,3,4；
wherein S is a comprehensive evaluation index standard domain, j is a standardThe number of rows of the field, m the maximum number of rows of the standard field, k the number of columns of the standard field, SjkIs the comprehensive evaluation index of the jth row and the kth column.
And the objective weight generation module 40 of the comprehensive evaluation index standard is used for comparing the conflict between the strength and the comprehensive evaluation index standard by an objective weight assignment method to obtain the objective weight of the comprehensive evaluation index standard.
In a specific embodiment, the obtaining the objective weight of the comprehensive evaluation index standard through the conflict between the objective weight assignment method and the comparison strength and the comprehensive evaluation index standard includes:
calculating the coefficient of each index quality inspection;
calculating the conflict quantization index of the jth index and other indexes according to the coefficient of the quality inspection of each index;
calculating the standard deviation of the jth index;
calculating the information content contained in the jth index according to the coefficient of the quality inspection of each index and the standard deviation of the jth index;
and calculating the weight of the jth index according to the information content contained in the jth index.
And the comprehensive scoring module 50 is used for integrating the index importance degree weight and the objective weight of the comprehensive evaluation index standard to obtain a comprehensive score of the distribution automation terminal.
In one embodiment, the composite score is calculated by the following formula:
wherein, SCOREiIs the composite score, gamma, of the ith terminaljIs the index importance degree weight of the jth index, wjObjective weight of the comprehensive evaluation index standard of the jth index, Xstandard_ijAnd m is the score value of the jth index of the ith terminal, and the maximum line number of the standard domain.
The system provided by the invention determines each index weight by utilizing an analytic hierarchy process and an objective weight assignment process and obtains a corresponding comprehensive score to obtain an optimal power distribution automatic terminal evaluation scheme, thereby improving the accuracy of power distribution automatic terminal evaluation.
In a third aspect.
The present invention provides an electronic device, including:
a processor, a memory, and a bus;
the bus is used for connecting the processor and the memory;
the memory is used for storing operation instructions;
the processor is configured to call the operation instruction, and the executable instruction enables the processor to execute an operation corresponding to the power distribution automation terminal evaluation method shown in the first aspect of the present application.
In an alternative embodiment, an electronic device is provided, as shown in fig. 4, the electronic device 5000 shown in fig. 4 includes: a processor 5001 and a memory 5003. The processor 5001 and the memory 5003 are coupled, such as via a bus 5002. Optionally, the electronic device 5000 may also include a transceiver 5004. It should be noted that the transceiver 5004 is not limited to one in practical application, and the structure of the electronic device 5000 is not limited to the embodiment of the present application.
The processor 5001 may be a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor 5001 may also be a combination of processors implementing computing functionality, e.g., a combination comprising one or more microprocessors, a combination of DSPs and microprocessors, or the like.
The memory 5003 may be, but is not limited to, a ROM or other type of static storage device that can store static information and instructions, a RAM or other type of dynamic storage device that can store information and instructions, an EEPROM, a CD-ROM or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
The memory 5003 is used for storing application program codes for executing the present solution, and the execution is controlled by the processor 5001. The processor 5001 is configured to execute application program code stored in the memory 5003 to implement the teachings of any of the foregoing method embodiments.
Among them, electronic devices include but are not limited to: mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like.
A fourth aspect.
The present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a power distribution automation terminal evaluation method as set forth in the first aspect of the present application.
Yet another embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, which, when run on a computer, enables the computer to perform the corresponding content in the aforementioned method embodiments.
Claims (14)
1. A power distribution automation terminal evaluation method is characterized by comprising the following steps:
establishing an evaluation index domain of the power distribution automation terminal according to the requirements of the power distribution automation system;
establishing a judgment matrix through an analytic hierarchy process to obtain the weight of the importance degree of the indexes in the evaluation index domain;
constructing a comprehensive evaluation index standard domain of the distribution automation terminal according to the evaluation index domain of the distribution automation terminal;
obtaining objective weight of the comprehensive evaluation index standard by comparing the conflict between the strength and the comprehensive evaluation index standard through an objective weight assignment method;
and synthesizing the index importance degree weight and the objective weight of the comprehensive evaluation index standard to obtain a comprehensive score of the power distribution automation terminal.
2. The method according to claim 1, wherein the evaluation index field of the distribution automation terminal comprises: a target layer, a decision layer and a scheme layer;
wherein the decision layer comprises: technical indexes, fault detection indexes and hardware condition indexes; the technical indexes comprise: the working environment temperature, the data transmission speed, the application environment requirement and the working power supply requirement, the fault detection index includes: remote control test capability, data wireless transmission and PLC automatic isolation, the hardware condition index includes: volume, power consumption, and capacity.
3. The power distribution automation terminal evaluation method of claim 2, wherein the establishing of the judgment matrix by the analytic hierarchy process comprises:
and aiming at the technical indexes, the fault detection indexes and the hardware condition indexes in the decision layer, constructing a comparison matrix of the indexes based on expert experience, and carrying out consistency check on the comparison matrix, wherein the comparison matrix which is successfully subjected to the consistency check is a judgment matrix.
4. The method according to claim 1, wherein the evaluation index field of the distribution automation terminal is:
X＝{xij}n×m；
wherein X is an evaluation index field, XijThe method comprises the steps of obtaining a jth comprehensive evaluation index of an ith distribution automation terminal, obtaining a jth comprehensive evaluation index of the jth distribution automation terminal, obtaining n of the number of the distribution automation terminals to be selected, and obtaining m of the number of the evaluation indexes.
5. The power distribution automation terminal evaluation method of claim 1, wherein the comprehensive evaluation index standard domain is:
S＝Sjk；
j＝1，2，...m；
k＝1，2，3，4；
wherein S is a comprehensive evaluation index standard domain, j is the line number of the standard domain, m is the maximum line number of the standard domain, k is the column number of the standard domain, and SjkIs the comprehensive evaluation index of the jth row and the kth column.
6. The power distribution automation terminal evaluation method according to claim 1, wherein the obtaining of the objective weight of the comprehensive evaluation index criterion by comparing the intensity with the conflict between the comprehensive evaluation index criterion by the objective weight assignment method comprises:
calculating the coefficient of each index quality inspection;
calculating the conflict quantization index of the jth index and other indexes according to the coefficient of the quality inspection of each index;
calculating the standard deviation of the jth index;
calculating the information content contained in the jth index according to the coefficient of the quality inspection of each index and the standard deviation of the jth index;
and calculating the weight of the jth index according to the information content contained in the jth index.
7. The power distribution automation terminal evaluation method according to claim 1, wherein the composite score is calculated by the following formula:
wherein, SCOREiIs the composite score, gamma, of the ith terminaljIs the index importance degree weight of the jth index, wjObjective weight of the comprehensive evaluation index standard of the jth index, Xstandard_ijAnd m is the score value of the jth index of the ith terminal, and the maximum line number of the standard domain.
8. A power distribution automation terminal evaluation system, characterized by comprising:
the evaluation index domain establishing module is used for establishing an evaluation index domain of the distribution automation terminal according to the requirements of the distribution automation system;
the index importance degree weight generation module is used for establishing a judgment matrix through an analytic hierarchy process to obtain the index importance degree weight in the evaluation index domain;
the comprehensive evaluation index standard domain establishing module is used for establishing a comprehensive evaluation index standard domain of the distribution automation terminal according to the evaluation index domain of the distribution automation terminal;
the objective weight generation module of the comprehensive evaluation index standard is used for comparing the conflict between the intensity and the comprehensive evaluation index standard by an objective weight assignment method to obtain the objective weight of the comprehensive evaluation index standard;
and the comprehensive scoring module is used for integrating the index importance degree weight and the objective weight of the comprehensive evaluation index standard to obtain the comprehensive scoring of the power distribution automation terminal.
9. The distribution automation terminal evaluation system according to claim 8, wherein the evaluation index field of the distribution automation terminal includes: a target layer, a decision layer and a scheme layer;
wherein the decision layer comprises: technical indexes, fault detection indexes and hardware condition indexes; the technical indexes comprise: the working environment temperature, the data transmission speed, the application environment requirement and the working power supply requirement, the fault detection index includes: remote control test capability, data wireless transmission and PLC automatic isolation, the hardware condition index includes: volume, power consumption, and capacity.
10. The power distribution automation terminal evaluation system of claim 9 wherein the building of the decision matrix by analytic hierarchy process comprises:
and aiming at the technical indexes, the fault detection indexes and the hardware condition indexes in the decision layer, constructing a comparison matrix of the indexes based on expert experience, and carrying out consistency check on the comparison matrix, wherein the comparison matrix which is successfully subjected to the consistency check is a judgment matrix.
11. The distribution automation terminal evaluation system according to claim 8, wherein the evaluation index field of the distribution automation terminal is:
X＝{xij}n×m；
wherein X is an evaluation index field, XijThe method comprises the steps of obtaining a jth comprehensive evaluation index of an ith distribution automation terminal, obtaining a jth comprehensive evaluation index of the jth distribution automation terminal, obtaining n of the number of the distribution automation terminals to be selected, and obtaining m of the number of the evaluation indexes.
12. The distribution automation terminal evaluation system of claim 8 wherein the composite evaluation index standard domain is:
S＝Sjk；
j＝1，2，...m；
k＝1，2，3，4；
wherein S is a comprehensive evaluation index standard domain, j is the line number of the standard domain, m is the maximum line number of the standard domain, k is the column number of the standard domain, and SjkIs the comprehensive evaluation index of the jth row and the kth column.
13. The power distribution automation terminal evaluation system of claim 8 wherein the obtaining of the objective weight of the composite evaluation index criteria by comparing the intensity with the conflict between the composite evaluation index criteria by objective weight assignment comprises:
calculating the coefficient of each index quality inspection;
calculating the conflict quantization index of the jth index and other indexes according to the coefficient of the quality inspection of each index;
calculating the standard deviation of the jth index;
calculating the information content contained in the jth index according to the coefficient of the quality inspection of each index and the standard deviation of the jth index;
and calculating the weight of the jth index according to the information content contained in the jth index.
14. The power distribution automation terminal evaluation system of claim 8 wherein the composite score is calculated by the formula:
wherein, SCOREiIs the composite score, gamma, of the ith terminaljIs the index importance degree weight of the jth index, wjObjective weight of the comprehensive evaluation index standard of the jth index, Xstandard_ijAnd m is the score value of the jth index of the ith terminal, and the maximum line number of the standard domain.
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