CN112907120A - Method, device, equipment and storage medium for evaluating electric circuit of power distribution system - Google Patents
Method, device, equipment and storage medium for evaluating electric circuit of power distribution system Download PDFInfo
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Abstract
The invention provides an electric circuit evaluation method, a device, equipment and a storage medium of a power distribution system, wherein the method comprises the following steps: acquiring parameter values of a plurality of evaluation indexes of n electric lines to be evaluated in a power distribution system; carrying out consistency processing on the parameter values of each evaluation index according to the numerical characteristics of the evaluation index to obtain consistent parameter values; for each evaluation index, acquiring a corresponding grade according to the parameter value of the evaluation index; generating a variable weight function corresponding to each evaluation index according to the grade of each evaluation index; for each electric line to be evaluated, obtaining a comprehensive evaluation value of each electric line according to the consistence parameter value of each evaluation index and the variable weight index corresponding to the consistence parameter value; and acquiring the operation condition of the whole power distribution system according to the comprehensive evaluation value of each electric line. According to the invention, a user can visually know the line health state of the user, and the evaluation of the running state depends on the actual measurement value, so that the judgment is more objective and accurate.
Description
Technical Field
The invention relates to the field of fuel cell engines, in particular to an electrical circuit evaluation method, device, equipment and storage medium of a power distribution system.
Background
A power distribution system is an electrical power network system that transforms voltage and distributes power directly to end users, consisting of a variety of distribution equipment (or components) and distribution facilities. The working operation condition of the power distribution system is related to the power utilization stability of users, so that the monitoring of the working operation condition of the power distribution system is of great significance.
At present, an electric line inlet end of a power distribution system is generally provided with a voltage acquisition module, a current transformer, a residual current transformer, a temperature sensor and other information acquisition modules, voltage, current, residual current and temperature information in an electric line can be detected through the information acquisition modules, the acquired information such as the voltage, the current, the residual current and the temperature in a detected loop is uploaded to a cloud platform, and the acquired information is analyzed according to a set model and then can be checked by a user.
However, the existing cloud platform generally only provides pure measured values for users to check, users generally cannot judge the line health state, configuration conditions, comprehensive information and the like, generally judge whether the configuration of parameters of the power distribution circuit, such as line diameter, idle opening and the like, is reasonable and can only check the configuration through field verification, the association with personnel experience and responsibility is large, and users cannot accurately and intuitively know the operation condition of the electric line.
Disclosure of Invention
In view of the above, the present invention is directed to a method, an apparatus, a device and a storage medium for evaluating an electrical line of a power distribution system, so as to solve the above problems.
The invention adopts the following scheme:
an electrical line evaluation method of an electrical distribution system, comprising:
acquiring parameter values of a plurality of evaluation indexes of n electric lines to be evaluated in a power distribution system;
carrying out consistency processing on the parameter values of each evaluation index according to the numerical characteristics of the evaluation index to obtain consistent parameter values;
for each evaluation index, acquiring a corresponding grade according to the parameter value of the evaluation index;
generating a variable weight function corresponding to each evaluation index according to the grade of each evaluation index;
for each electric line to be evaluated, obtaining a comprehensive evaluation value of each electric line according to the consistence parameter value of each evaluation index and the variable weight index corresponding to the consistence parameter value; and
and acquiring the operation condition of the whole power distribution system according to the comprehensive evaluation value of each electric line.
Preferably, the evaluation index includes: rated current, leakage current, temperature, characteristic duration, historical current parameters, voltage parameters.
Preferably, the numerical characteristics include an extremely small type, an intermediate type, and a zonal type, and when the matching process is performed:
for an extremely small evaluation index, the matching parameter x' is 1/x; wherein x is the obtained parameter value;
for the evaluation index of the intermediate type, the consistency parameter is made as follows:
for the evaluation index of the interval type, the parameter is made consistent
Wherein [ a, b ] is the optimal interval of x; c is max { a-M, b-M }, M and M respectively evaluate the maximum value and the minimum value of the parameter value x of the index.
Preferably, for each evaluation index xiCorresponding to K levels PkK is more than or equal to 1 and less than or equal to K, and each grade PkHas a corresponding interval range [ c ]i k,di k)；
When x isi∈[ci k,di k) When it is, x is judgediBelong to the gradePk。
Preferably, the weight varying function is set to be an S-shaped distribution function.
Preferably, the function form of the variable weight function is:
wherein,
and wi(g)＝0.5,1≤i≤m。
Preferably, the method further comprises the following steps:
and judging the running condition of each electric circuit according to the parameter value of the evaluation index and the configured early warning information, and displaying the state indicator lamp with the corresponding color according to the judgment result.
Preferably, the comprehensive evaluation value of each electrical line is:
the embodiment of the invention also provides an electric circuit evaluation device of a power distribution system, which comprises:
the system comprises a parameter value acquisition unit, a parameter value acquisition unit and a parameter value evaluation unit, wherein the parameter value acquisition unit is used for acquiring parameter values of a plurality of evaluation indexes of each electric circuit for n electric circuits to be evaluated in the power distribution system;
the consistency processing unit is used for carrying out consistency processing on the parameter values of each evaluation index according to the numerical characteristics of the evaluation index to obtain consistency parameter values;
the grade acquisition unit is used for acquiring the corresponding grade of each evaluation index according to the parameter value of the evaluation index;
a variable weight unit for generating a variable weight function corresponding to each evaluation index according to the grade of each evaluation index;
the comprehensive evaluation unit is used for obtaining a comprehensive evaluation value of each electric line according to the consistency parameter value of each evaluation index and the corresponding variable weight index of each electric line to be evaluated; and
and the operation condition acquisition unit is used for acquiring the operation condition of the whole power distribution system according to the comprehensive evaluation value of each electric line.
The embodiment of the invention also provides an electrical line evaluation device of a power distribution system, which comprises a memory and a processor, wherein the memory stores a computer program, and the computer program can be executed by the processor to realize the electrical line evaluation method of the power distribution system.
The embodiment of the invention also provides a computer-readable storage medium, which stores a computer program, wherein the computer program can be executed by a processor of a device where the computer-readable storage medium is located, so as to realize the electrical circuit evaluation method of the power distribution system.
In summary, in the above embodiment, the comprehensive processing model of the n electrical lines of the whole power distribution system is constructed and obtained by the n electrical lines to be evaluated in the power distribution system according to the consistency parameters, the levels and the variable weight functions of the n electrical lines, so that the operation condition of the whole power distribution system can be intuitively obtained according to the acquired parameter values, and thus, a user can intuitively know the line health state, the configuration condition, the comprehensive information and the like of the line, and the evaluation of the whole operation condition depends on the actual measurement values and does not depend on the subjective judgment of the staff, so that the judgment is more objective and accurate.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic flow chart of an electrical line evaluation method of a power distribution system according to a first embodiment of the present invention.
Fig. 2 is a configuration diagram of an electric line evaluation device of a power distribution system according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, a first embodiment of the present invention provides an electrical line evaluation method for a power distribution system, which can be executed by an electrical line evaluation device (hereinafter, referred to as an evaluation device) of the power distribution system, and in particular, executed by a first or multiple processors in the evaluation device, so as to implement the following steps:
s101, for n electric lines to be evaluated in the power distribution system, parameter values of a plurality of evaluation indexes of each electric line are obtained.
In this embodiment, the evaluation device may be an intelligent gateway located at an edge or a server located at a cloud, and the invention is not particularly limited.
In this embodiment, for each power distribution system, each power distribution system generally includes a plurality of electrical lines, and for each electrical line, the parameter value of the corresponding evaluation index can be acquired by the information acquisition modules such as the current transformer, the residual current transformer, and the temperature sensor through voltage acquisition.
Wherein, corresponding to the information acquisition module, the evaluation index includes: rated current, leakage current, temperature, characteristic duration, historical current parameters, voltage parameters. Of course, more or less evaluation indexes can be selected according to actual needs, and the schemes are within the protection scope of the invention.
And S102, carrying out consistency processing on the parameter values of each evaluation index according to the numerical characteristics of the evaluation index to obtain consistent parameter values.
In this embodiment, since the values of different evaluation indexes are greatly different, a matching process (e.g., a maximization process) is required to be performed to obtain a matching parameter value when performing evaluation.
In the present embodiment, in particular,
the numerical characteristics include an extremely small type, an intermediate type, and a block type, and when the matching process is performed:
for an extremely small evaluation index, the matching parameter x' is 1/x; wherein x is the actual parameter value obtained.
Among them, the very small evaluation indexes include a line leakage current and the like.
For the evaluation index of the intermediate type, the consistency parameter is made as follows:
the intermediate evaluation index includes a line temperature and the like.
For the evaluation index of the interval type, the parameter is made consistent
Wherein [ a, b ] is the optimal interval of x; c is max { a-M, b-M }, M and M respectively evaluate the maximum value and the minimum value of the parameter value X of the index X.
The evaluation index of the section type includes a line voltage and the like.
And S103, acquiring the corresponding grade of each evaluation index according to the parameter value of the evaluation index.
In the present embodiment, for each evaluation index XiAll can be divided into K levels P1，P2，Pk，PK(K > 1). And for each PkAll comprise ai k,bi k) And b isi k＞ai k(i; (1, 2 …, m;), i.e., when the evaluation index X is usediParameter value x ofi∈[ai k,bi k) Then, the index X is evaluatediBelonging to class Pk。
And S104, generating a variable weight function corresponding to each evaluation index according to the grade of each evaluation index.
In the present embodiment, the influence of the inferior evaluation index on the final evaluation result is different, and thus different weights need to be set for different evaluation indexes. In the present embodiment, the evaluation index X is setiThe effect on the evaluation is with the grade PkIncreased by increasing, and therefore the index X is evaluatediThe weight-varying function of (a) is set to be an S-shaped distribution function:
wherein,
and wi(g)＝0.5,1≤i≤m。
And S105, for each electric line to be evaluated, obtaining a comprehensive evaluation value of each electric line according to the consistence parameter value of each evaluation index and the variable weight index corresponding to the consistence parameter value.
And S106, acquiring the operation condition of the whole power distribution system according to the comprehensive evaluation value of each electric line.
In this embodiment, the overall evaluation values of the n electric lines are, in combination, as follows:
thus, the comprehensive evaluation values of the n electrical lines are ranked, and the operation state of the whole power distribution system can be known clearly.
In summary, in the embodiment, the comprehensive processing model of the n electrical lines of the whole power distribution system is constructed and obtained by the n electrical lines to be evaluated in the power distribution system according to the consistency parameters, the levels and the variable weight functions of the n electrical lines, so that the operation condition of the whole power distribution system can be intuitively obtained according to the acquired parameter values, a user can intuitively know the line health state, the configuration condition, the comprehensive information and the like of the line, and the evaluation of the whole operation condition depends on the actual measurement values and does not depend on the subjective judgment of the staff, so that the judgment is more objective and accurate.
Preferably, the method further comprises the following steps:
and judging the running condition of each electric circuit according to the parameter value of the evaluation index and the configured early warning information, and displaying the state indicator lamp with the corresponding color according to the judgment result.
In the present embodiment, there are defined: UA, UB and UC are respectively measured voltages of an electric line, Un is a standard voltage of the line, and a voltage coefficient set is { a1, a2, a3... an }, wherein ai is not equal to aj, i < j;
tem is the measured temperature of the electric circuit, Temh is the environment temperature, Temz is the highest allowable working temperature of the cable, standard environment temperature Temhn is the thermal temperature, and the parameter coefficient set of the temperature class is { d1, d2, d3... dn }, wherein di is not equal to dj, i < j;
ib is a measured value of current, In is a set value of the line current or a rated current value of a control element of the power distribution loop, IZ is the maximum allowable working temperature current-carrying capacity of the cable at the standard environment temperature Temhn, Isz is the maximum allowable working temperature current-carrying capacity of the cable at the current environment temperature, and IZz is the current-carrying capacity which does not cause the temperature rise of the line; s is the wire diameter, and the set of S is {2.5, 4, 6, 10.. 500 }; when S is greater than or equal to 6, Izz-2The current-carrying capacity is two grades of wire diameter smaller than the wire diameter of the monitoring line; the current parameter coefficient set is { b1, b2, b3... bn }, wherein bi ≠ bj, i<j；
I delta s is actually measured residual current, and I delta n is line standard residual current; the parameter coefficient set of the residual current class is { c1, c2, c3... cn }, wherein ci is not equal to cj, i < j;
tim is time, and the time parameter coefficient set is { e1, e2, e3... en }, wherein ei is not equal to ej, i < j;
the current and temperature are set in the following early warning modes:
1. when Ib is less than b1 In, Ib is less than b2 Isz and Tem is less than d1 Temh, the circuit temperature is judged to be normal, the current is normal, the circuit is In a healthy state and is displayed In green;
b1 In is less than or equal to Ib < b3 In, Ib < b4 Izz, and Tem < d2 Temh, the circuit temperature is judged to be normal, but the type selection of the control element of the power distribution circuit is smaller, the display is blue, and the prompting function is realized;
b3 In is less than or equal to IB and less than b5 In, Ib is less than b6 Izz, and Tem is less than d3 Temh, Tim is more than or equal to e1(In is less than or equal to 63A) or Tim is more than or equal to e2(In is more than 63A), when the circuit temperature is normal but the selection of the control element of the power distribution circuit is too small, the control element can not be protected, the display is yellow, and the alarm function is performed In the initial step;
b5 In is less than or equal to IB < b7 In, Ib < b8 Izz, Tem < d4 Temh, Tim < e1(In is less than or equal to 63A) or Tim < e2(In is more than 63b) are tripped, the normal line temperature is judged, the overload trip is caused by the undersized control element of the power distribution circuit, and the display is orange;
when IB < b9 In is not more than b7 In, Ib < b10 Izz and Tem < d5 Temh, and Tim is not less than or equal to e1(In is not more than 63A) or Tim is not less than or equal to e2(In is more than 63A), judging that the line temperature is normal but the protection of the power distribution circuit control element is failed, and displaying the red color;
b9 In is less than or equal to IB, Ib is less than b11 Izz, and Tem is less than d6 Temh, e3 is more than Tim is more than e4(In is less than or equal to 32A) or e3 is more than Tim is more than e5(In is less than or equal to A), the normal line temperature is judged, but the overload trip is caused by the serious and small selection of the control element of the power distribution circuit, and the display is red;
b12 In is less than or equal to IB, Ib is less than b13 Izz and Tem is less than d7 Temh, e3 is more than Tim and less than e4(In is less than or equal to 32A) or e3 is more than Tim and less than e5(In is less than or equal to 32A), the circuit set value or the type selection of the power distribution loop control element is over-small, the protection of the power distribution loop control element is failed, the circuit set value or the type selection of the power distribution loop control element is displayed In red, and an alarm effect is achieved;
when Ib is more than or equal to b13 In and Tem-Temh of the three-phase line is more than d8 In Temh ℃, the excessive temperature of the distribution line is prompted to be generated due to mismatching of the line diameter and the load, the color is displayed as orange, and the important warning function is played;
when Ib is more than or equal to b14 In and Tem-Temh of the three-phase line is more than d9 In, the excessive temperature of the distribution line is prompted to be generated due to mismatching of the line diameter and the load, the color is displayed as orange, and the important warning function is played;
10. when Ib < b15zz-2When the Tem-Temh of the phase line is more than d10 and Temh ℃, the Tem-Temh of the other lines is more than d10 and Temh ℃, the circuit is judged to be over-temperature due to the loose wiring of the lower end of the control element, and the display is red;
when the Ib mutation is larger than b16 In and the voltage UA, UB and UC mutation is smaller than a1 Un, the circuit is judged to have the possibility of short circuit and is displayed In red;
ib stably running, and judging that the line is manually opened when the voltages UA, UB and UC are less than a1 × Un; when the voltage UA, UB and UC of other devices which are dependent on the device is less than a1 × Un, the device is judged to be in power failure and is displayed as blue.
13.b16*Izz-2Ib is less than or equal to b1 In, and Tem-Temh is more than d11 Temh ℃, judging that the circuit wiring is small and generates over-temperature, and displaying the color yellow;
14.Ibb＜b16*Izz-2and when Tem-Temh is more than d12 Temh ℃, judging that the circuit wiring is small and generates over-temperature, and displaying the over-temperature as yellow;
15. when the three-phase current Iab + Ibb + Icb is not equal to In, the circuit is judged to have electric leakage or be connected In series, and the circuit needs to be checked, displays red and plays a role In alarming.
Wherein:
the voltage setting is as follows:
when Ui ═ Ua, Ub, Uc | } < a1 × Un, e5 < Tim < e6, the voltage is judged to be interrupted in short time; when e7 is less than Tim, the line voltage is judged to be interrupted;
judging short-time phase loss when Ua/Ub/Uc is less than a 2U and e8 is less than Tim is less than e 9; when e10 is less than Tim, judging that the line is in phase failure;
when a 2U is less than or equal to Ua/Ub/Uc < a 3U and e11 < Tim < e12, judging short-circuit and undervoltage; when e13 is less than Tim, judging that the circuit is undervoltage;
4, a 3U is less than or equal to Ua/Ub/Uc < a 4U, and the line voltage is judged to be normal;
when a 4U is less than or equal to Ua/Ub/Uc and e14 < Tim < e15, judging short-time overvoltage of the circuit; when e17 is less than Tim, judging the line overvoltage;
6. when the measured voltage of any phase is U and the other two phases are a 5U, judging that the line connection is wrong;
the residual current is set in the following early warning mode:
1, judging the line health when I delta s is less than c 1I delta n;
when the I delta s is less than or equal to c 1I delta n and less than c 2I delta n, judging that the circuit possibly has electric leakage;
when c 2I Δ n is not more than I Δ s < c 3I Δ n, Tim > e18 and Ui ═ Ua, Ub, Uc | } > a1 × Un, it is determined that the line has electric leakage and the control element is failed;
when c2 is not more than I delta s < c3 is not less than I delta n, Tim > e18 and Ui is { Ua, Ub and Uc | } < a1 is not less than U n, judging that the circuit has electric leakage and the control element is tripped;
when c 3I Δ n is not more than I Δ s < c 4I Δ n, Tim > e19(e19< e18), Ui ═ Ua, Ub, Uc | } > a1 a Un, it is judged that there is leakage of electricity in the line and the control element is failed;
when c 3I Δ n is not more than I Δ s < c 4I Δ n, Tim > e19(e19< e18), Ui ═ Ua, Ub, Uc | } < a1 u n, it is determined that there is leakage current in the line and the control element is failed;
when c 5I Δ n is less than or equal to I Δ s, Ui ═ Ua, Ub, Uc | } a 1I Δ n or Iab/Ibb/Icb < I Δ s, judging that the circuit has the circuit concatenation to generate the residual current;
when c5 is not more than I delta n and not more than I delta s and not more than Iab/Ibb/Icb, judging that the circuit generates residual current because the zero line of the lower end circuit is not connected with the circuit;
9, c 5I Δ n ≦ I Δ s, Ui ═ Ua, Ub, Uc | } < a1 × Un, it is determined that the line exists because of the line
Serially connecting to generate residual current;
c6 In is less than or equal to I Delta s [ c6> b15], Ui is { Ua, Ub, Uc | } < a1 ^ Un, the residual current is generated due to the occurrence of the ground fault of the circuit, and the circuit is tripped for protection;
referring to fig. 2, a second embodiment of the present invention further provides an electrical circuit evaluation apparatus for a power distribution system, which includes:
a parameter value obtaining unit 210, configured to obtain, for n electrical lines to be evaluated in a power distribution system, a parameter value of a plurality of evaluation indexes of each electrical line;
a consistency processing unit 220, configured to perform consistency processing on the parameter value of each evaluation index according to the numerical characteristic of the evaluation index, so as to obtain a consistency parameter value;
a grade obtaining unit 230, configured to obtain, for each evaluation index, a grade corresponding to the evaluation index according to a parameter value of the evaluation index;
a variable weight unit 240 for generating a variable weight function corresponding to each evaluation index according to the grade of each evaluation index;
the comprehensive evaluation unit 250 is used for obtaining a comprehensive evaluation value of each electric line according to the consistency parameter value of each evaluation index and the corresponding variable weight index of each electric line to be evaluated; and
and the operation condition acquisition unit 260 is used for acquiring the operation condition of the whole power distribution system according to the comprehensive evaluation value of each electric line.
The third embodiment of the present invention also provides an electrical line evaluation device of a power distribution system, which includes a memory and a processor, wherein the memory stores a computer program, and the computer program can be executed by the processor to implement the electrical line evaluation method of the power distribution system.
The fourth embodiment of the present invention also provides a computer-readable storage medium, which stores a computer program, where the computer program is executable by a processor of a device in which the computer-readable storage medium is located, so as to implement the electrical line evaluation method of the power distribution system as described above.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus and method embodiments described above are illustrative only, as the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, an electronic device, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An electrical line evaluation method for a power distribution system, comprising:
acquiring parameter values of a plurality of evaluation indexes of n electric lines to be evaluated in a power distribution system;
carrying out consistency processing on the parameter values of each evaluation index according to the numerical characteristics of the evaluation index to obtain consistent parameter values;
for each evaluation index, acquiring a corresponding grade according to the parameter value of the evaluation index;
generating a variable weight function corresponding to each evaluation index according to the grade of each evaluation index;
for each electric line to be evaluated, obtaining a comprehensive evaluation value of each electric line according to the consistence parameter value of each evaluation index and the variable weight index corresponding to the consistence parameter value; and
and acquiring the operation condition of the whole power distribution system according to the comprehensive evaluation value of each electric line.
2. The electrical line evaluation method of an electrical distribution system according to claim 1, wherein the evaluation index includes: rated current, leakage current, temperature, characteristic duration, historical current parameters, voltage parameters.
3. The electrical line evaluation method of an electrical distribution system according to claim 1,
the numerical characteristics include an extremely small type, an intermediate type, and a block type, and when the matching process is performed:
for an extremely small evaluation index, the matching parameter x' is 1/x; wherein x is the obtained parameter value;
for the evaluation index of the intermediate type, the consistency parameter is made as follows:
for the evaluation index of the interval type, the parameter is made consistent
Wherein [ a, b ] is the optimal interval of x; c is max { a-M, b-M }, M and M respectively evaluate the maximum value and the minimum value of the parameter value x of the index.
4. The electrical line evaluation method of an electrical distribution system according to claim 1, wherein for each evaluation index xiCorresponding to K levels PkK is more than or equal to 1 and less than or equal to K, and each grade PkHas a corresponding interval range [ c ]i k,di k)；
When x isi∈[ci k,di k) When it is, x is judgediBelonging to class Pk。
5. The electrical line evaluation method of a power distribution system according to claim 4, wherein the weight-varying function is set to an S-shaped distribution function; the function form of the variable weight function is as follows:
wherein,
and wi(g)＝0.5,1≤i≤m。
6. The electrical line evaluation method of an electrical distribution system according to claim 5, wherein the integrated evaluation value of each electrical line is:
7. the electrical line evaluation method of an electrical distribution system according to claim 1, further comprising:
and judging the running condition of each electric circuit according to the parameter value of the evaluation index and the configured early warning information, and displaying the state indicator lamp with the corresponding color according to the judgment result.
8. An electrical line evaluation apparatus for an electrical distribution system, comprising:
the system comprises a parameter value acquisition unit, a parameter value acquisition unit and a parameter value evaluation unit, wherein the parameter value acquisition unit is used for acquiring parameter values of a plurality of evaluation indexes of each electric circuit for n electric circuits to be evaluated in the power distribution system;
the consistency processing unit is used for carrying out consistency processing on the parameter values of each evaluation index according to the numerical characteristics of the evaluation index to obtain consistency parameter values;
the grade acquisition unit is used for acquiring the corresponding grade of each evaluation index according to the parameter value of the evaluation index;
a variable weight unit for generating a variable weight function corresponding to each evaluation index according to the grade of each evaluation index;
the comprehensive evaluation unit is used for obtaining a comprehensive evaluation value of each electric line according to the consistency parameter value of each evaluation index and the corresponding variable weight index of each electric line to be evaluated; and
and the operation condition acquisition unit is used for acquiring the operation condition of the whole power distribution system according to the comprehensive evaluation value of each electric line.
9. An electrical line evaluation device of an electrical distribution system, comprising a memory and a processor, the memory having stored therein a computer program executable by the processor to implement the electrical line evaluation method of an electrical distribution system according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a computer program is stored, which computer program is executable by a processor of a device in which the computer-readable storage medium is located, to implement the method for evaluating an electrical line of a power distribution system according to any one of claims 1 to 7.
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