CN113177858B - Multi-dimensional power grid typhoon resistance evaluation method - Google Patents
Multi-dimensional power grid typhoon resistance evaluation method Download PDFInfo
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Abstract
The invention discloses a multidimensional power grid typhoon resistance evaluation method. The method aims to solve the problems that in the prior art, the power grids under different conditions adopt the same anti-typhoon evaluation standard, and the reliability of the evaluation result is low; the invention comprises the following steps: s1: determining an evaluation object level of a current power grid; s2: obtaining the typhoon-resistant evaluation score of the current power grid by applying four-dimensional exponential weighting calculation according to the data; s3: according to the power supply area division, the wind area with the reference wind speed in fifty years and the historical disaster probability, the standard grade of the typhoon prevention is determined in a quantitative weighting mode; s4: according to the calculated typhoon resistance evaluation score of the current power grid, corresponding to a platform resistance standard grade, determining the platform resistance level of the current power grid; s5: and (4) multi-dimensional analysis, and targeted optimization promotion or reinforcement. The three-layer evaluation object is oriented, the three-level typhoon prevention standard is established, the four-dimensional evaluation index is constructed, the power grid typhoon resistance evaluation standard is established according to different conditions of the object, and the reliability of the evaluation result is improved.
Description
Technical Field
The invention relates to the field of power grid typhoon resistance evaluation, in particular to a multi-dimensional power grid typhoon resistance evaluation method.
Background
Typhoon is one of the weather factors which have the greatest influence on a power transmission network, coastal cities in southeast of China are attacked by typhoon every year, the local power grid is damaged slightly by typhoon every time, typhoon damage conditions are evaluated, danger levels are given according to resistance of different devices to typhoon, and the method is an important measure for reducing damage of typhoon to the power transmission network and improving device safety.
Due to the difference of economic development level and geographical position, the requirements of the power grid countermeasures in different areas are different, and the power grid countermeasure evaluation standard is established according to different conditions, so that 'one-time cutting' is avoided. The existing power grid typhoon resistance evaluation method is generally characterized in that the same evaluation method is adopted in different areas, for example, a method and a system for evaluating the damage risk of a 10kV tower under a typhoon disaster, which is disclosed in Chinese patent literature, is disclosed, and the publication number of the method and the system is CN112287018A, and comprises the steps of collecting data of a research area, wherein the data comprises typhoon information, power grid information and geographic information; processing and analyzing data, and establishing an input information data system, wherein the processing and analyzing comprise data preprocessing, classification variable processing, sample balancing, correlation analysis and variable elimination; based on various machine learning algorithms, respectively establishing 10kV pole tower damage risk assessment models under typhoon disasters, training and testing each model, and performing damage risk assessment on 10kV pole towers in a research area; and taking two indexes of goodness-of-fit and time as model evaluation indexes, comparing risk evaluation results of the models, performing comprehensive weighting on the indexes based on an analytic hierarchy process and an entropy weight method, selecting an optimal model, and visualizing the risk evaluation results.
Different power grids in the scheme have different conditions, and the same evaluation standard is adopted, so that the reliability of the evaluation result is low.
Disclosure of Invention
The method mainly solves the problem that the evaluation result reliability is low because the power grids under different conditions adopt the same anti-typhoon evaluation standard in the prior art; the method is oriented to three-layer evaluation objects, a three-level typhoon prevention standard is established, a four-dimensional evaluation index is constructed, the power grid typhoon resistance evaluation standard is established according to different conditions of the objects, one-time cutting is avoided, and the reliability of an evaluation result is improved.
The technical problem of the invention is mainly solved by the following technical scheme:
a multi-dimensional power grid typhoon resistance evaluation method comprises the following steps:
s1: determining an evaluation object level of a current power grid;
s2: collecting current power grid data, and performing four-dimensional index weighted calculation according to the data to obtain an anti-typhoon evaluation score of the current power grid;
s3: according to the power supply area division, the wind area with the standard wind speed in fifty years and the historical disaster probability, quantitatively weighting to determine the platform prevention standard level of the evaluation object level;
s4: according to the calculated typhoon resistance evaluation score of the current power grid, corresponding to a platform resistance standard grade, determining the platform resistance level of the current power grid;
s5: and performing multi-dimensional analysis according to the current power grid anti-typhoon level, and performing targeted optimization promotion or reinforcement.
The scheme is oriented to three-layer evaluation objects, a three-level typhoon prevention standard is established, a four-dimensional evaluation index is constructed, a power grid typhoon resistance evaluation standard is established according to different conditions of the objects, one-time cutting is avoided, and the reliability of an evaluation result is improved.
Preferably, the evaluation object hierarchy comprises three layers of prefecture, county and district and grid. And the evaluation target faces to the three-layer evaluation target, so that the evaluation pertinence is improved, and the evaluation result credibility is improved.
Preferably, the four-dimensional index weighted calculation comprises four-dimensional weighted calculation of a power grid robustness index, an equipment reliability index, an operation and maintenance management index and an emergency guarantee index;
G＝K 1 N 1 +K 2 N 2 +K 3 N 3 +K 4 N 4
wherein G is the typhoon resistance evaluation score; k 1 Weighting coefficients which are power grid robustness indexes; k 2 A weighting factor that is a reliability index of the device; k is 3 A weighting coefficient which is an operation and maintenance management index; k 4 A weighting coefficient for the emergency assurance index; n is a radical of 1 The power grid robustness index; n is a radical of hydrogen 2 Is an equipment reliability index; n is a radical of hydrogen 3 The operation and maintenance management index is obtained; n is a radical of 4 Is an emergency guarantee index.
According to the scheme, the evaluation objects are evaluated from four dimensions, the evaluation angle is comprehensive, and the reliability of the evaluation result is higher.
Preferably, the grid robustness index comprises two secondary indexes of grid robustness of 110/35kV or above and medium voltage distribution grid robustness;
the net rack with 110k/35V and above is strong and comprises a N-2 passing rate A of 500kV lines in a typhoon state 1 220kV line N-2 passing rate A in typhoon state 2 And 110/35kV net rack standardization rate A 3 ；
The medium-voltage distribution network net rack has the strong standard rate B of 10/20kV net rack 1 10/20kV line section reasonable rate B 2 And the passing rate B of the 10/20kV line supply 3 Interruptible adjustable load size ratio B 4 Ratio B of flexible interaction source storage resources to important loads 5 Black start allocation capacity ratio B 6 And 110kV transformer substation negativeCapacity for transferring load B 7 ；
N 1 ＝k a (A 1 +A 2 +A 3 )+k b1 (B 1 +B 2 +B 3 )+k b2 (B 4 +B 5 +B 3 )+k b3 B 7
Wherein k is a 、k b1 、k b2 And k b3 Are all weighted score coefficients.
The scheme subdivides the power grid robustness indexes in four dimensions, comprises a plurality of secondary indexes and three-level indexes, is divided carefully, is convenient for finding problem points, and is favorable for later targeted reinforcement.
Preferably, the equipment reliability index comprises three secondary indexes of wind-resistant qualification rate of lines of 110/35kV or above, transformer substation reliability and standard-reaching rate of distribution network lines;
the wind-resistant qualification rate of the lines of 110/35kV and above comprises a wind-resistant qualification rate C of 500kV lines 1 220kV line wind-resistant qualification rate C 2 Wind-resistant compliance rate C of 110/35kV line 3 Proportion C to old tower 4 ；
Transformer substation reliability including waterlogging prevention measure qualification transformer substation proportion D 1 Indoor substation ratio D 2 And configuring the ratio D of the transformer substation of the third path 3 And communication station and optical cable standard reaching rate D 4 ；
The standard reaching rate of the distribution network line comprises a wind-resistant qualification rate E of 10/20kV line 1 And the compliance rate E of the old 10/20kV overhead line 2 Engineering quality qualification rate E of 10/20kV overhead line 3 Traffic reliability index E 4 Automated effective coverage E 5 And distribution automation self-healing proportion E 6 ；
N 2 ＝k c (C 1 +C 2 +C 3 +C 4 )+k d (D 1 +D 2 +D 3 +D 4 )+k e1 E 1 +k e2 (E 2 +E 3 +E 4 +E 5 +E 6 )
Wherein k is c 、k d 、k e1 And k e2 Are all weighted fractional coefficients.
The scheme subdivides the equipment reliability indexes in four dimensions, comprises a plurality of secondary indexes and tertiary indexes, is finely divided, is convenient for finding problem points, and is favorable for later targeted reinforcement.
Preferably, the operation and maintenance management index comprises four secondary indexes, namely a power transformation hidden danger troubleshooting management index, a power transmission hidden danger troubleshooting management index, a power distribution hidden danger troubleshooting management index and a disaster monitoring coverage index;
the power transformation hidden trouble investigation and treatment index comprises the completeness rate F of an emergency plan of a transformer substation 1 And the treatment rate F of hidden dangers of foreign matters around the transformer substation 2 And the whole treatment rate of the waterproof hidden danger of the transformer substation F 3 ；
The indexes for troubleshooting and treating the hidden troubles of power transmission comprise the completeness rate G of an emergency plan of the power transmission line 1 And the treatment rate of foreign matters in the channel G 2 Geological disaster point equipment consolidation rate G 3 Weak pole and tower reinforcement proportion G 4 ；
The index for troubleshooting and governing the hidden troubles of power distribution comprises the completeness H of an emergency plan of a power distribution line 1 And the finishing rate H of the distribution line channel 2 Distribution equipment reinforcement ratio H 3 Wind resistance improvement rate H for old distribution network line 4 ；
The disaster monitoring coverage index comprises a line distributed fault instrument and a video coverage rate I 1 Monitoring of water level of transformer substation and video coverage rate I 2 And underground and low-lying distribution room water level monitoring coverage rate I 3 ；
N 3 ＝k f1 F 1 +k f2 (F 2 +F 3 )+k g1 G 1 +k g2 (G 2 +G 3 +G 4 )+k h1 H 1 +k h2 (H 2 +H 3 +H 4 )+k i (I 1 +I 2 +I 3 )
Wherein k is f1 、k f2 、k g1 、k g2 、k h1 、k h2 And k i Are all weighted score coefficients.
The scheme subdivides the operation and maintenance management indexes in four dimensions, comprises a plurality of second-level indexes and third-level indexes, is finely divided, is convenient for finding problem points, and is favorable for later targeted reinforcement.
Preferably, the emergency guarantee index comprises five secondary indexes of an emergency system, personnel guarantee, material and equipment guarantee, safety guarantee and recovery speed;
the emergency system includes a drill coverage rate J 1 ；
Personnel security includes distribution network first-aid repair personnel sufficiency L 1 And the sufficiency rate L of the power transformation first-aid repair personnel 2 And the sufficiency rate L of power transmission first-aid repair personnel 3 And the duty ratio L of the important transformer substation personnel 4 ；
The guarantee of the material equipment comprises the material allocation rate M 1 And equipment allocation rate M 2 ；
The safety guarantee comprises a safety supervision arrival rate O 1 And no human casualty accident O 2 ；
The recovery speed comprises the full-coverage time standard-reaching rate P of disaster general survey 1 And the first-aid repair recovery time standard reaching rate P 1 ；
N 4 ＝k j J 1 +k l1 (L 1 +L 4 )+k l2 (L 2 +L 3 )+k m (M 1 +M 2 )+k o1 O 1 +k o2 O 2 +k p1 P 1 +k p2 P 2
Wherein k is j 、k l1 、k l2 、k m 、k o1 、k o2 、k p1 And k p2 Are all weighted fractional coefficients.
The scheme subdivides the emergency guarantee indexes in the four dimensions, and the division is careful and comprises a plurality of second-level indexes and third-level indexes, so that the problem points can be found conveniently, and the subsequent targeted reinforcement is facilitated.
Preferably, the anti-typhoon standard grade comprises a major anti-typhoon standard, a minor anti-typhoon standard and a general anti-typhoon standard; dividing power supply regions into six regions A +, A, B, C, D and E according to the Power distribution network planning design guide rule, and dividing and scoring the power supply regionsA gd Comprises the following steps:
when the power supply grade is A + and A is 10; when the power supply grade is B, the score is 8; when the power supply grade is C, the score is 6; when the power supply grade is D, the grade is 4; when the power supply grade is E or below, the rating is 2;
according to Zhejiang electric network wind zone distribution diagram, a wind zone meeting the reference wind speed in 50 years is quantized, and a score A is given to the wind zone meeting the reference wind speed in 50 years ws Comprises the following steps:
when the wind speed is 37 m/s or above, the score is 80 points; a score of 70 when the wind speed is between 27 and 37 meters per second; when the wind speed is 27 m/s or less, the score is 60;
historical disaster probability R d Obtained by the following formula:
wherein, T D The historical disaster times of the area are obtained; t is t zd The number of times of disaster damage in history of Zhejiang river is shown;
anti-typhoon standard grade scoring P ft Comprises the following steps:
P ft ＝A gd +A ws +R d *10
anti-typhoon standard grade scoring P ft The score of (a) is greater than or equal to 80 as a major defense standard, greater than or equal to 60 and less than 80 as a minor defense standard, and less than 60 as a general defense standard.
According to the scheme, the power supply area of the evaluation object is divided, the wind area with the standard wind speed and the historical disaster probability are met in fifty years, the platform-prevention standard grade of the evaluation object level is determined in a quantitative weighting mode, the platform-prevention standard grade is divided into three grades, the platform-prevention and platform-resistance level of the evaluation object can be evaluated in a targeted mode, and 'one-time cutting' is avoided.
Preferably, when the typhoon-resistant standard grade is the key typhoon-resistant standard, the typhoon-resistant evaluation score G is greater than or equal to 90, and the evaluation object is judged to fully reach the typhoon-resistant standard; if the anti-typhoon evaluation score G is greater than or equal to 80 and less than 90, the evaluation object is judged to basically reach the typhoon prevention standard; if the anti-typhoon evaluation score G is greater than 80, judging that the evaluation object does not reach the anti-typhoon standard; when the typhoon prevention standard level is the secondary typhoon prevention standard, if the typhoon resistance evaluation score G is greater than or equal to 80, the evaluation object is judged to comprehensively reach the typhoon prevention standard; if the anti-typhoon evaluation score G is more than or equal to 70 and less than 80, the evaluation object is judged to basically reach the typhoon prevention standard; if the anti-typhoon evaluation score G is larger than 70, judging that the evaluation object does not reach the typhoon prevention standard;
when the typhoon prevention standard level is a general typhoon prevention standard, if the typhoon resistance evaluation score G is greater than or equal to 70, judging that the evaluation object comprehensively reaches the typhoon prevention standard; if the anti-typhoon evaluation score G is greater than or equal to 60 and less than 70, judging that the evaluation object basically reaches the typhoon prevention standard; and if the anti-typhoon evaluation score G is larger than 70, judging that the evaluation object does not reach the typhoon prevention standard.
The platform-resistant standard grade is divided into three levels, the platform-resistant level of the evaluation object can be evaluated in a targeted manner, and one-time cutting is avoided.
Preferably, the step S5 includes the following steps:
s51: if the judgment result is that the evaluation object comprehensively reaches the anti-typhoon standard, ending; if the evaluation object basically meets the platform-prevention standard or does not meet the platform-prevention standard, the step S42 is executed;
s52: and analyzing the scoring proportion of the evaluation object in four dimensions of power grid robustness, equipment reliability, operation and maintenance management and emergency guarantee according to the four-dimensional index weighting calculation result in the step S2.
S53: if the evaluation object does not reach the platform prevention standard, reinforcing the secondary index or the tertiary index with low score in the dimensionality with the lowest score proportion, and returning to the step S2 after reinforcing;
s54: and if the evaluation object basically reaches the platform-prevention standard, sequencing the importance degrees of the four dimensions, carrying out optimization promotion on the secondary index or the tertiary index with low score in the dimension with higher importance degree, and returning to the step S2 after optimization promotion.
According to the evaluation result of the current power grid anti-typhoon and anti-typhoon level, four-dimensional exponential weighting calculation is combined, the improvement or reinforcement can be carefully and pertinently optimized, and the efficiency of power grid optimization is improved.
The beneficial effects of the invention are:
1. the three-layer evaluation object is oriented, the three-level typhoon prevention standard is established, the four-dimensional evaluation index is constructed, the power grid typhoon resistance evaluation standard is established according to different conditions of the object, one-time cutting is avoided, and the reliability of the evaluation result is improved.
2. The four dimensions respectively comprise a plurality of secondary indexes and tertiary indexes, the division is careful, problem points can be found conveniently, and the later targeted reinforcement is facilitated.
3. According to the evaluation result of the current power grid anti-typhoon resistance level, the four-dimensional index weighting calculation is combined, the targeted optimization promotion or reinforcement can be carefully carried out, and the power grid optimization efficiency is improved.
Drawings
Fig. 1 is a flow chart of a multi-dimensional power grid anti-typhoon evaluation method of the invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
The embodiment is as follows:
the method for evaluating the typhoon resistance of the multi-dimensional power grid in the embodiment is shown in fig. 1 and comprises the following steps: s1: and determining the evaluation object level of the power grid.
The evaluation object hierarchy comprises three layers of prefecture, county and district and grid. And determining the grade of the evaluation object, and performing personalized calculation to judge the stage resistance level of the evaluation object.
S2: and collecting the current power grid data, and performing four-dimensional exponential weighting calculation according to the data to obtain the typhoon-resistant evaluation score of the current power grid.
And collecting power grid data in the evaluation object, and performing hierarchical regional calculation.
The four-dimensional index weighted calculation comprises a power grid robustness index, an equipment reliability index, an operation and maintenance management index and an emergency guarantee index;
G＝K 1 N 1 +K 2 N 2 +K 3 N 3 +K 4 N 4
wherein G is the typhoon resistance evaluation score; k 1 A weighting coefficient which is a grid robustness index; k is 2 A weighting factor that is a device reliability index; k 3 A weighting coefficient which is an operation and maintenance management index; k is 4 A weighting coefficient for the emergency assurance index; n is a radical of 1 The power grid robustness index; n is a radical of 2 Is an equipment reliability index; n is a radical of hydrogen 3 The operation and maintenance management index is obtained; n is a radical of hydrogen 4 Is an emergency guarantee index.
In this embodiment, K 1 Is 0.2,K 2 Is 0.3,K 3 Is 0.3,K 4 The total G content was 0.2, and the total G content was 100 points.
The grid robustness index comprises two secondary indexes of grid robustness of 110/35kV and above and grid robustness of medium-voltage distribution grid.
The net rack with 110k/35V and above is strong and comprises a N-2 passing rate A of 500kV lines in a typhoon state 1 220kV line N-2 passing rate A in typhoon state 2 And 110/35kV net rack standardization rate A 3 。
The medium-voltage distribution network net rack has the strong standard rate B of 10/20kV net rack 1 10/20kV line segmentation reasonable rate B 2 And 10/20kV line transfer passing rate B 3 Interruptible adjustable load scale ratio B 4 Ratio B of flexible interaction source storage resources to important loads 5 Black start allocation capacity ratio B 6 And 110kV transformer substation load transfer capacity B 7 。
When the N-2 full-rotation load capacity of the 500kV line meets the current working condition in the typhoon state, the N-2 passing rate A of the 500kV line in the typhoon state 1 Get 1, otherwise get 0. 500kV wire in typhoon stateRoad N-2 passage rate A 1 And (4) calculating the load capacity of the 500kV line under the condition of N-2 under the typhoon at the time of full rotation.
When the N-2 full-rotation load capacity of the 220kV line meets the current working condition in the typhoon state, the N-2 passing rate A of the 220kV line in the typhoon state 2 And taking 1, otherwise, taking 0. N-2 passing rate A of 220kV line in typhoon state 2 And (4) calculating the load capacity of the 220KV line under the condition of N-2 under the condition of full rotation at the time under the typhoon.
Wherein S is 110/35 The number of 110/35kV non-single-line single-station wiring transformer substations is increased; s 110/35 The number of 110/35kV lines of a 110/35kV transformer substation. 110/35kV net rack standardization rate A 3 And calculating the 110/35kV non-single-line single-station wiring occupation ratio.
Wherein S is 10/20 The number of the standard grid lines is 10/20 kV; s 10 Is the number of 10kV lines. 10/20kV net rack standardization rate B 1 And calculating the 10/20kV standard wiring ratio.
In which SH 10/20 The number of the segmented lines is 10/20 kV; s 10/20 Is 10/20kV line number. Reasonable rate B of 10/20kV line segmentation 2 And calculating the reasonable segmented line occupation ratio.
Wherein S is N-1 The line can be checked through N-1 for the conventional way; ss (service standards) N-1 The circuit can be verified through N-1 after power supply shunting is introduced; sq(s) N-1 The line can pass the N-1 verification for passing the load response; s is the bus line. 10/20kV line supply passing rate B 3 Comprehensively analyzing the medium-voltage line supply capacity, and considering the assistance of a multi-source fusion high-elasticity means.
Wherein Q break Interruptible load power, Q, for access in seconds max Is the maximum load of the whole society. Interruptible adjustable load scale duty ratio B 4 When faults are measured, due to the fact that the rotating power is insufficient or the power supply load needs to be recovered by means of a power generation car and the like, the power supply demand can be reduced through load response.
Wherein Q is c110 Accessing the total capacity of a reliable power supply of a power grid of 110kV or below for an evaluation area; q user The method is used for evaluating the total load of important users under the typhoon condition of a region. Ratio B of flexible interaction source storage resources to important load 5 When major faults occur to the regional superior power grid, the power is restored to the major users through the local reliable power supply.
N 1 ＝k a (A 1 +A 2 +A 3 )+k b1 (B 1 +B 2 +B 3 )+k b2 (B 4 +B 5 +B 3 )+k b3 B 7
Wherein k is a 、k b1 、k b2 And k b3 Are all weighted fractional coefficients, where k a Take 2,k b1 Take 3,k b2 Take 1,k b3 And taking 2.
In this embodiment, the total power grid robustness index is 20 points, and for the convenience of calculation, the coefficient 5 needs to be multiplied during calculation to make N be equal to 1 Is 100 points.
The equipment reliability index comprises three secondary indexes of wind-resistant qualification rate of lines of 110/35kV and above, transformer substation reliability and distribution network line standard-reaching rate.
The wind-resistant qualification rate of the lines of 110/35kV and above comprises the wind-resistant qualification rate C of the 500kV line 1 220kV line wind-resistant qualification rate C 2 Wind-resistant compliance rate C of 110/35kV line 3 Proportion C to old tower 4 。
Transformer substation reliability including waterlogging prevention measure qualification transformer substation proportion D 1 Indoor substation ratio D 2 And configuring the ratio D of the third path of substation to the variable power supply substation 3 And communication station and optical cable standard reaching rate D 4 。
The up-to-standard rate of the distribution network line comprises a wind-resistant qualified rate E of 10/20kV line 1 And the compliance rate E of the old 10/20kV overhead line 2 And the engineering quality qualification rate E of the 10/20kV overhead line 3 Traffic reliability index E 4 Automated effective coverage E 5 And distribution automation self-healing accounts for ratio E 6 。
Wherein, ST 500 The number of 500kV lines meeting the design standard of the existing defense platform for a 500kV transformer substation; s. the 500 The number of lines is 500 kV. According to the 'Zhejiang electric network wind district' published by province company (meeting in 50 years), the wind-resistant qualification rate C of 500kV lines 1 The level of the power grid against typhoon is reflected by the number proportion of 500kV iron towers meeting the current design requirements.
Wherein, ST 220 The number of 220kV lines meeting the design standard of the existing defense platform for a 220kV transformer substation; s 220 Is 220kV line number. According to the 'Zhejiang power grid wind district' requirement (meeting in 50 years) issued by province companies, the wind-resistant qualification rate C of 220kV lines 2 The level of the power grid against typhoon is reflected by the number ratio of 220kV iron towers meeting the current design requirements.
Wherein, ST 110 The number of 110kV lines meeting the current defense platform design standard for a 110kV transformer substation; s is 110 Is 110kV line count. Wind-resistant compliance rate C of 110/35kV line 3 And calculating the proportion of the 110/35kV line design standard meeting the wind area requirement of the region.
Wherein S is old The number of lines containing old towers. The old tower refers to two tower types of 7727/7725 tower with the operation age of more than 30 years.
Wherein n is pass The number of transformer substations qualified for waterlogging prevention measures; n number of substations. Proportion D of transformer substation with qualified waterlogging prevention measures 1 And calculating the proportion of the transformer substation with the design standard meeting the flood level and the main drainage device installed in the local 50 years.
Wherein n is indoor The number of substations in the whole house; n number of substations.
Wherein n is 3rd Configuring the number of the transformer substations of the third path; n number of substations. Configuring the ratio D of the transformer substation of the third path 3 The variable power sources of different sources outside the substation are referred.
Wherein n is rel The number of stations qualified in the discharging time of the communication direct-current power supply load is counted; n is lig The number of stations for reliable optical cable coverage is met; n is 110 The number of stations is 110kV and above. The discharge time of the direct-current power supply load for communication of sites of 110kV and above within 50 km of the coastal area is not less than 8 hours; at communication sites within 50 km and below of the coastal area, the optical cable line should adopt modes of reinforcing and strengthening measures or newly building and reconstructing routes, etc., so as to ensure that 1 or more reliable routes (the reliable routes are routes organized by whole-course OPGW optical cables or pipeline optical cables) are accessed to backbone transmission networks in the city.
Wherein, ST 10/20 The number of 10/20kV lines meeting the design standard of the existing defense platform for a 10/20kV transformer substation; s is 10/20 Is 10/20kV line number. Wind-resistant qualification rate E of 10/20kV lines 1 And calculating the proportion of the number of the lines of the wind area where the 10/20kV line design standard meets the existing requirement.
Wherein L is 10/20 The number of 10/20kV overhead lines exceeds 15 years in operation period; l 10/20 The number of the overhead lines is 10/20 kV. Compliance rate E of old 10/20kV overhead line 2 And calculating the proportion of overhead lines with the operation life of more than 15 years.
E 3 ＝P 1 *0.25+P 2 *0.25+P 3 *0.25+P 4 *0.25
Wherein, P 1 For design evaluation; p is 2 Evaluating construction; p 3 For supervision evaluation; p is 4 The evaluation is acceptance evaluation. The engineering quality qualification rate of the 10/20kV overhead line is the evaluation of the quality of 10/20kV overhead line in the links of design, construction, supervision and acceptance, and each link is divided into 1 point.
When the mountain area grid has more than two automobile transportation roads leading to the grid and the average manpower distance is less than 100 m, the traffic reliability index E 4 Taking 2 points; any one condition is not satisfied, and the traffic reliability index E 4 Taking 1 minute; both are not satisfied, and the traffic reliability index E 4 And taking 0 point.
When the average manpower distance of the flat ground grid is less than 100 meters, the traffic reliability index E 4 2 points are obtained; average man-power distance between 100 m and 200 m, traffic reliability index E 4 1 point is obtained; average man-power distance greater than 200 m and traffic reliability index E 4 0 point is obtained.
Index of traffic reliability E 4 The condition of access to the mountain gridding road and the average manpower distance of the medium-voltage line are shown.
Wherein S is auto For the automation to cover the line effectively, s is the total number of lines.
Wherein, SY auto The number of lines is used for effectively covering the feeder automation function in the line by three remote operations; sy is the number of effective covered lines of three remote. The index is used for measuring the realization degree of the self-healing function of the distribution network.
N 2 ＝k c (C 1 +C 2 +C 3 +C 4 )+k d (D 1 +D 2 +D 3 +D 4 )+k e1 E 1 +k e2 (E 2 +E 3 +E 4 +E 5 +E 6 )
Wherein k is c 、k d 、k e1 And k e2 Are all weighted fractional coefficients, where k c 、k d And k e2 Take 2,k e1 And taking 4. In this embodiment, the total power grid robustness index score is 30, and for convenient calculation, the coefficient is multiplied to enable N to be obtained in calculation 2 Is 100 points.
The operation and maintenance management index comprises four secondary indexes, namely a power transformation hidden danger troubleshooting management index, a power transmission hidden danger troubleshooting management index, a power distribution hidden danger troubleshooting management index and a disaster monitoring coverage index.
The power transformation hidden trouble investigation and treatment index comprises the completeness rate F of an emergency plan of a transformer substation 1 And the overall treatment rate of foreign body hidden dangers around the transformer substation F 2 And the whole treatment rate of the waterproof hidden danger of the transformer substation F 3 。
The indexes for troubleshooting and treating hidden troubles of power transmission comprise the completeness rate G of an emergency plan of the power transmission line 1 And the treatment rate of foreign matters in the channel G 2 Geological disaster point equipmentOverall rate of treatment G 3 Weak pole and tower reinforcement proportion G 4 。
The index for troubleshooting and governing the hidden troubles of power distribution comprises the completeness H of an emergency plan of a power distribution line 1 And the finishing rate H of the distribution line channel 2 Distribution equipment reinforcement ratio H 3 Wind resistance rate H of old distribution network line 4 。
The disaster monitoring coverage index comprises a line distributed fault instrument and a video coverage rate I 1 Monitoring of water level of transformer substation and video coverage rate I 2 Underground and low-lying power distribution room water level monitoring coverage rate I 3 。
Wherein, KR n Configuring emergency plan types, KS, for the actual power transformation n And configuring emergency plan types for the power transformation electric appliances. The transformation electric power strain configuration emergency plan types refer to the national grid flood control inspection outline. Transformer substation emergency plan completeness F 1 The ratio of coverage to each level and professional emergency plan.
Wherein n is d220 The number of transformer substations with hidden danger at the periphery is 220 kV; n is 220 The total number of the 220kV transformer substations is; n is d110 The number of transformer substations with peripheral hidden danger is 110kV or below; n is 110 The total number of the 220kV transformer substations is. Potential hazard recovery rate F of foreign matters around transformer substation 2 In order to discover and manage the hidden danger of foreign matters around the transformer substation, the fault is caused because the hidden danger is not checked in place, and the result is rejected on the one hand and is divided into 0.
Wherein n is w220 The number of transformer substations with hidden dangers of waterlogging and flooding is regulated for 220 kV; n is w110 Is 110kV has been completedAnd (4) remedying the number of the transformer substations by hidden dangers of waterlogging and flooding. Waterproof hidden danger rectification rate F of transformer substation 3 The fault is caused by the fact that the hidden danger of the transformer substation is not checked in place in the regulation proportion of the transformer substation with the hidden dangers of waterlogging and flooding, and is rejected once and for all, and the score is 0.
The smaller the number, the higher the overall treatment rate, 0 represents the total treatment. If no hidden trouble exists, the score is full.
Wherein, KR t Configuring the type of emergency plan, KS, for the actual transmission t And configuring the type of an emergency plan for power transmission. Completeness of emergency plan G of power transmission line 1 The ratio of covering each level and professional emergency plan.
Wherein, U d Finishing the treatment for the hidden danger of the foreign matters; u shape all The total number of hidden troubles of foreign matters. Channel foreign body treating rate G 2 The rate of finishing the renovation of the hidden danger that the periphery of the line channel is easily affected by typhoon and threatens the line safety is achieved. And (4) because hidden dangers are not checked in place, faults occur, and the result is rejected once and is divided into 0.
Wherein G is d The number of the towers for remedying the hidden danger of the geological disaster is reduced; g all The total number of the towers in the hidden danger area of the geological disaster is shown. Geological disaster point equipment consolidation rate G 3 The method shows the situation that the towers in the influence range of geological disasters such as collapse, landslide, debris flow, flood disasters and the like can prevent and cure related disasters, and faults occur due to the fact that hidden dangers are not checked in place, and the score is 0.
Wherein G is wd The number of the transformed or reinforced weak poles and towers is the same; g w The total number of the weak poles and towers is. Reinforcing proportion G of weak pole tower 4 The tower transformation or reinforcement completion rate that the tower structure strength can not meet the wind zone requirements is shown, and faults occur due to the fact that hidden dangers are not checked in place, and the result is rejected by one ticket and is divided by 0.
Wherein, KR g Actually configuring the type of an emergency plan for a power supply station; KS g The emergency plan type should be configured for power supply. Distribution line emergency plan completeness rate H 1 And calculating the coverage proportion of each level and the professional emergency plan.
Wherein, SP d The number of distribution lines for finishing channel renovation; 5P all The total number of distribution lines in the checked disaster-susceptible area. Regulating rate H of distribution line channel 2 The method is characterized in that the method represents the channel regulation proportion of distribution lines in the disaster-prone area, and faults occur due to the fact that hidden dangers are not checked in place, and the result is denied at first, and the score is 0.
Wherein, DS d The number of the power distribution equipment is strengthened for completion; DS (direct sequence) system all The total number of the potential equipment which is checked. Distribution equipment reinforcement ratio H 3 The equipment reinforcement proportion of binding wires, mounting a rack and mounting stay wires is indicated, faults occur due to the fact that hidden dangers are not checked in place, and the number of the faults is 0.
Wherein SO d The number of old distribution network lines for finishing wind resistance treatment; SO all The total number of the checked old distribution lines. Wind-resistant rectification rate H for old distribution network line 4 The method represents the improvement proportion of the wind resistance of old distribution network lines, and faults occur due to the fact that hidden dangers are not checked in place, and are rejected once and for all, and the score is 0.
Wherein S is des The number of lines for installing the distributed fault diagnosis apparatus; s is the total number of lines; g vid Installing a tower base number for the video monitoring device; and g is the total number of the towers. Line distributed fault instrument and video coverage rate I 1 The proportion of the lines with disaster monitoring and fault diagnosis capabilities to the total number of all the lines is shown.
Wherein n is ww220 Installing the number of transformer substations which are easy to cause waterlogging and are monitored by water level for 220 kV; n is wa220 The total number of transformer substations which are easy to waterlog is 220 kV; n is ww110 Installing the number of the transformer substations with water level monitoring capability easy to waterlogging for 110kV or below; n is wa110 The total number of the transformer substations which are easy to waterlog is 110 kV; vid is the number of video monitoring device installations; and n is the total number of the substations. Water level monitoring and video coverage rate I of transformer substation 2 And the proportion of the transformer substation with water level monitoring and video monitoring to the total number of the transformer substations is shown.
Wherein, PW d The number of power distribution rooms for completing the installation of the water level monitoring device; the PW is the total number of underground and low-lying power distribution rooms susceptible to waterlogging. Water level monitoring coverage rate I of underground and low-lying power distribution room 3 Is provided withThe underground and low-lying power distribution room for water level monitoring accounts for the proportion of the power distribution room which is easily affected by waterlogging.
N 3 ＝k f1 F 1 +k f2 (F 2 +F 3 )+k g1 G 1 +k g2 (G 2 +G 3 +G 4 )+k h1 H 1 +k h2 (H 2 +H 3 +H 4 )+k i (I 1 +I 2 +I 3 )
Wherein k is f1 、k f2 、k g1 、k g2 、k h1 、k h2 And k i Are all weighted fractional coefficients, where k f1 、k g1 And k h1 Take 1,k g2 And k i Take 2,k f2 And k h2 And taking 3. In this embodiment, the total score of the operation and maintenance management index is 30 minutes, and for convenient calculation, the operation and maintenance management index needs to be multiplied by a coefficient so that N is obtained 3 Is 100 points.
The emergency guarantee index comprises five secondary indexes of an emergency system, personnel guarantee, material and equipment guarantee, safety guarantee and recovery speed.
The emergency system includes a drill coverage rate J 1 。
Personnel security includes distribution network first-aid repair personnel sufficiency L 1 And the sufficiency rate L of the power transformation rush-repair personnel 2 And the sufficiency rate L of power transmission first-aid repair personnel 3 And the duty ratio L of the important transformer substation personnel 4 。
Material equipment guarantee including material allocation rate M 1 And equipment allocation rate M 2 。
The safety guarantee comprises a safety supervision arrival rate O 1 And no human casualty accident O 2 。
The recovery speed comprises the time standard-reaching rate P of the full coverage of disaster general survey 1 And the first-aid repair recovery time standard reaching rate P 2 。
Wherein, KR y Drill for practical emergency planClass; KS y The configured emergency plan type. Drill coverage rate J 1 The proportion of the coverage of each level, professional emergency plan drill (emergency plan contains the advance parking personnel and equipment which are easy to form an island region).
Gp is the sum of emergency repair personnel during the stage of a power supply station; gs is the number of faulty lines. Distribution network emergency repair personnel sufficiency L 1 The configuration proportion (sum of first-aid repair personnel in main industry and actual industry) of the conditions of the working responsible persons is shown according to the size of the distribution network.
Wherein np is the sum of power transformation rush repair personnel; and n is the number of the transformer substations. Sufficient rate L of power transformation rush-repair personnel 2 The configuration ratio (sum of first-aid repair staff in the main industry and the actual industry) of the conditions of the work responsible persons is shown according to the scale of the transformer substation.
Wherein tp is the sum of transmission first-aid repair personnel. Sufficiency rate L of power transmission first-aid repair personnel 3 The configuration proportion (sum of first-aid repair personnel in main industry and actual industry) of the conditions of the working responsible persons is shown according to the scale of the power transmission line.
Wherein pn is imp The number of important transformer stations which are attended by personnel during the anti-station period; n is imp Is an important number of substations. And arranging personnel for the transformer substations (hub transformer substations, important user transformer substations, transformer substations in typhoon landing areas and transformer substations easy to suffer from water damage) which are determined to be important.
Wherein, GK wd The types of materials provided for power supply; GK wb And configuring types for standard materials of a power supply station. The goods and materials include cables, transformers, ring main units, electric poles, switches and overhead conductors. Material allocation rate M 1 Showing the proportion of the materials according to the material allocation standard.
Wherein, GK zd The equipment type provided for power supply; GK zb And configuring the types for the standard equipment of the power supply station. The equipment comprises an off-road vehicle, a satellite phone, a generator, an interphone, large-scale lighting equipment, an unmanned aerial vehicle, a chain saw/pole saw and a drainage pump. Equipment allocation rate M 2 Indicating the proportion of equipment to be equipped according to the equipment configuration standard.
Wherein, W p The number of safety supervision personnel for carrying out first-aid repair work is in place; w t The number of the first-aid repair work tickets is increased. Safety supervision arrival rate O 1 When the first-aid repair work needs to be carried out, a special person is required to monitor.
When casualty accidents occur, O 2 Taking 1; otherwise 0 is taken. No human casualty accident O 2 Human casualty events do not occur in the emergency guarantee process.
Wherein p is 12 The disaster condition general investigation time is less than 12 hours; p is a radical of t The number of typhoon disasters. Full-coverage time standard-reaching rate P for disaster general survey 1 The capability of disaster general investigation after typhoon disasters is measured, the recovery time of the power grid is directly influenced, and the time is calculated by taking the typhoon out of the scene (the evaluation period is nearly five years).
Wherein p is 24 The number of times of emergency repair time after disaster is less than 24 hours; p is a radical of formula 48 The times of rush repair after disaster are less than 48 hours; p is a radical of 72 The number of times of emergency repair time after disaster is less than 72 hours; level is the typhoon level. Rush repair recovery time length standard reaching rate P 2 After typhoon disasters are measured, the power grid first-aid repair capacity is measured, and 13-grade typhoons and below typhoons, 14-grade typhoons, 15-grade typhoons and 16-grade typhoons are respectively calculated by starting to calculate time when the typhoons leave the scene (the evaluation period is nearly five years).
N 4 ＝k j J 1 +k l1 (L 1 +L 4 )+k l2 (L 2 +L 3 )+k m (M 1 +M 2 )+k o1 O 1 +k o2 O 2 +k p1 P 1 +k p2 P 2
Wherein k is j 、k l1 、k l2 、k m 、k o1 、k o2 、k p1 And k p2 Are all weighted fractional coefficients, where k l2 、k o2 And k p1 Take 1,k j 、k l1 、k m And k o1 Taking 2, when the typhoon grade is less than or equal to 13 grade, k p2 Get 2, otherwise k p2 1 is taken. In this embodiment, the total score of the operation and maintenance management index is 200 points, and for convenient calculation, the operation and maintenance management index needs to be multiplied by a coefficient so that N is obtained 4 Is 100 points.
S3: and quantitatively weighting and determining the platform-prevention standard grade of the evaluation object grade according to the power supply area division, the wind area with the reference wind speed in fifty years and the historical disaster probability.
The power supply area division is divided into six areas of A +, A, B, C, D, E and the like according to the 'power distribution network planning design guide rule', and the power supply area division score A gd Comprises the following steps:
when the power supply grade is A + and A is 10; when the power supply grade is B, the score is 8; when the power supply grade is C, the score is 6; when the power supply grade is D, the grade is 4; when the power supply level is E or less, the score is 2.
According to Zhejiang power grid wind zone distribution chart, a reference wind speed wind zone is quantized for 50 years, and a score A is given to the reference wind speed wind zone for 50 years ws Comprises the following steps:
when the wind speed is 37 m/s or above, the score is 80 points; the wind speed is 27 m/s to 37 m/s, and the score is 70; when the wind speed was 27 m/s or less, the score was 60.
Historical disaster probability R d Obtained by the following formula:
wherein, T D The number of the historical disasters in the area is obtained; t is t zd The number of times of disaster suffered in Zhejiang history.
Anti-typhoon standard grade scoring P ft Comprises the following steps:
P ft ＝A gd +A ws +R d *10
anti-typhoon standard grade scoring P ft The score of (a) is greater than or equal to 80 as a major defense standard, greater than or equal to 60 and less than 80 as a minor defense standard, and less than 60 as a general defense standard.
S4: and determining the platform-resisting level of the current power grid corresponding to the platform-resisting standard grade according to the obtained typhoon-resisting evaluation score of the current power grid.
When the typhoon prevention standard grade is the key typhoon prevention standard, if the typhoon resistance evaluation score G is greater than or equal to 90, the typhoon prevention standard is judged to be met by the evaluation object; if the anti-typhoon evaluation score G is greater than or equal to 80 and less than 90, the evaluation object is judged to basically reach the typhoon prevention standard; and if the anti-typhoon evaluation score G is greater than 80, judging that the evaluation object does not reach the anti-typhoon standard.
When the typhoon prevention standard level is the secondary typhoon prevention standard, judging that the evaluation object comprehensively reaches the typhoon prevention standard if the typhoon resistance evaluation score G is greater than or equal to 80; if the anti-typhoon evaluation score G is more than or equal to 70 and less than 80, the evaluation object is judged to basically reach the typhoon prevention standard; and if the anti-typhoon evaluation score G is larger than 70, judging that the evaluation object does not reach the anti-typhoon standard.
When the typhoon prevention standard level is a general typhoon prevention standard, if the typhoon resistance evaluation score G is greater than or equal to 70, judging that the evaluation object comprehensively reaches the typhoon prevention standard; if the anti-typhoon evaluation score G is greater than or equal to 60 and less than 70, judging that the evaluation object basically reaches the typhoon prevention standard; and if the anti-typhoon evaluation score G is larger than 70, judging that the evaluation object does not reach the anti-typhoon standard.
S5: and according to the current power grid anti-typhoon level, performing multi-dimensional analysis, and performing targeted optimization promotion or reinforcement.
According to the evaluation result of the current power grid anti-typhoon and anti-typhoon level, four-dimensional exponential weighting calculation is combined, the improvement or reinforcement can be carefully and pertinently optimized, and the efficiency of power grid optimization is improved.
S51: if the judgment result is that the evaluation object comprehensively reaches the anti-typhoon standard, ending; if the evaluation object basically meets the typhoon prevention standard or does not meet the typhoon prevention standard, the procedure goes to step S42.
S52: and (5) analyzing the score proportion of the evaluation object in four dimensions of power grid robustness, equipment reliability, operation and maintenance management and emergency guarantee according to the four-dimensional index weighting calculation result in the step (S2).
S53: and if the evaluation object does not reach the platform prevention standard, reinforcing the secondary index or the tertiary index with low score in the dimension with the lowest score proportion, and returning to the step S2 after reinforcement.
S44: and if the evaluation object basically reaches the platform prevention standard, sorting the importance degrees of the four dimensions, performing optimization promotion aiming at the secondary index or the tertiary index with low score in the dimension with higher importance degree, and returning to the step S2 after optimization promotion.
The scheme of the embodiment is oriented to three-layer evaluation objects, establishes a three-level typhoon prevention standard, constructs a four-dimensional evaluation index, establishes a power grid typhoon resistance evaluation standard according to different conditions of the objects, avoids 'one-time cutting', and improves the reliability of an evaluation result. The four dimensions respectively comprise a plurality of secondary indexes and tertiary indexes, the division is careful, problem points can be found conveniently, and the later targeted reinforcement is facilitated.
It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (9)
1. A multi-dimensional power grid typhoon resistance evaluation method is characterized by comprising the following steps:
s1: determining an evaluation object level of a current power grid;
the evaluation object hierarchy comprises three layers of a city, a county and a grid;
s2: collecting current power grid data, and performing four-dimensional index weighted calculation according to the data to obtain an anti-typhoon evaluation score of the current power grid; collecting power grid data in an evaluation object, and performing hierarchical regional calculation;
the four-dimensional index weighted calculation comprises a power grid robustness index, an equipment reliability index, an operation and maintenance management index and an emergency guarantee index;
the power grid robustness index comprises two secondary indexes of 110/35kV and above grid frame robustness and medium voltage distribution grid frame robustness;
the net rack with the rigidity of 110k/35V and above comprises the N-2 passing rate A of a 500kV line in a typhoon state 1 220kV line N-2 in typhoon statePass rate A 2 And 110/35kV net rack standardization rate A 3 ；
The medium-voltage distribution network net rack has the strong standard rate B of 10/20kV net rack 1 10/20kV line section reasonable rate B 2 And 10/20kV line transfer passing rate B 3 Interruptible adjustable load scale ratio B 4 Ratio B of flexible interaction source storage resources to important loads 5 Black start allocation capacity ratio B 6 And 110kV transformer substation load transfer capacity B 7 ；
The equipment reliability index comprises three secondary indexes of wind-resistant qualification rate of lines of 110/35kV and above, transformer substation reliability and standard-reaching rate of distribution network lines;
the wind-resistant qualification rate of the lines of 110/35kV and above comprises the wind-resistant qualification rate C of the 500kV line 1 220kV line wind-resistant qualification rate C 2 Wind-resistant compliance rate C of 110/35kV line 3 Proportion C to old tower 4 ；
Transformer substation reliability including waterlogging prevention measure qualification transformer substation proportion D 1 Indoor substation ratio D 2 And configuring the ratio D of the third path of substation to the variable power supply substation 3 And communication station and optical cable standard reaching rate D 4 ；
The standard reaching rate of the distribution network line comprises a wind-resistant qualification rate E of 10/20kV line 1 And the compliance rate E of the old 10/20kV overhead line 2 And the engineering quality qualification rate E of the 10/20kV overhead line 3 Traffic reliability index E 4 Automated effective coverage E 5 And distribution automation self-healing proportion E 6 ；
The operation and maintenance management index comprises four secondary indexes, namely a power transformation hidden danger troubleshooting management index, a power transmission hidden danger troubleshooting management index, a power distribution hidden danger troubleshooting management index and a disaster monitoring coverage index;
the power transformation hidden trouble investigation and treatment index comprises the completeness rate F of an emergency plan of a transformer substation 1 And the overall treatment rate of foreign body hidden dangers around the transformer substation F 2 And the whole treatment rate of the waterproof hidden danger of the transformer substation F 3 ；
The indexes for troubleshooting and treating the hidden troubles of power transmission comprise the completeness rate G of an emergency plan of the power transmission line 1 And the treatment rate of foreign matters in the channel G 2 Geological disaster pointPlant improvement rate G 3 Weak tower reinforcement proportion G 4 ；
The index for troubleshooting and governing the hidden troubles of power distribution comprises the completeness H of an emergency plan of a power distribution line 1 And the finishing rate H of the distribution line channel 2 Distribution equipment reinforcement ratio H 3 Wind resistance improvement rate H for old distribution network line 4 ；
The disaster monitoring coverage index comprises a line distributed fault instrument and a video coverage rate I 1 Monitoring of water level of transformer substation and video coverage rate I 2 Underground and low-lying power distribution room water level monitoring coverage rate I 3 ；
The emergency guarantee index comprises five secondary indexes of an emergency system, personnel guarantee, material and equipment guarantee, safety guarantee and recovery speed;
the emergency system includes a drill coverage rate J 1 ；
Personnel security includes distribution network first-aid repair personnel sufficiency L 1 And the sufficiency rate L of the power transformation rush-repair personnel 2 And the sufficiency rate L of power transmission first-aid repair personnel 3 And the duty ratio L of the important transformer substation personnel 4 ；
Material equipment guarantee including material allocation rate M 1 And equipment allocation rate M 2 ；
The safety guarantee comprises a safety supervision arrival rate O 1 And no human casualty accident O 2 ；
The recovery speed comprises the full-coverage time standard-reaching rate P of disaster general survey 1 And the first-aid repair recovery time standard reaching rate P 2 ；
S3: according to the power supply area division, the wind area with the reference wind speed in fifty years and the historical disaster probability, quantitatively weighting and determining the platform prevention standard grade of the evaluation object grade;
s4: according to the calculated typhoon-resistant evaluation score of the current power grid, corresponding to the platform-resistant standard grade, determining the platform-resistant level of the current power grid;
s5: and according to the current power grid anti-typhoon level, performing multi-dimensional analysis, and performing targeted optimization promotion or reinforcement.
2. The method of claim 1, wherein the evaluation method for the typhoon resistance of the multi-dimensional power grid,
G＝K 1 N 1 +K 2 N 2 +K 3 N 3 +K 4 N 4
wherein G is the typhoon resistance evaluation score; k 1 A weighting coefficient which is a grid robustness index; k 2 A weighting factor that is a device reliability index; k 3 A weighting coefficient for the operation and maintenance management index; k is 4 A weighting coefficient for the emergency assurance index; n is a radical of hydrogen 1 The power grid robustness index; n is a radical of 2 Is an equipment reliability index; n is a radical of 3 The operation and maintenance management index is obtained; n is a radical of 4 Is an emergency guarantee index.
3. The multi-dimensional power grid anti-typhoon evaluation method according to claim 2,
N 1 ＝k a (A 1 +A 2 +A 3 )+k b1 (B 1 +B 2 +B 3 )+k b2 (B 4 +B 5 +B 3 )+k b3 B 7
wherein k is a 、k b1 、k b2 And k b3 Are all weighted score coefficients.
4. The method of claim 2, wherein the evaluation of the multi-dimensional grid typhoon resistance is performed by a computer,
N 2 ＝k c (C 1 +C 2 +C 3 +C 4 )+k d (D 1 +D 2 +D 3 +D 4 )+k e1 E 1 +k e2 (E 2 +E 3 +E 4 +E 5 +E 6 )
wherein k is c 、k d 、k e1 And k e2 Are all weighted score coefficients.
5. The method of claim 2, wherein the evaluation of the multi-dimensional grid typhoon resistance is performed by a computer,
N 3 ＝k f1 F 1 +k f2 (F 2 +F 3 )+k g1 G 1 +k g2 (G 2 +G 3 +G 4 )+k h1 H 1 +k h2 (H 2 +H 3 +H 4 )+k i (I 1 +I 2 +I 3 )
wherein k is f1 、k f2 、k g1 、k g2 、k h1 、k h2 And k i Are all weighted score coefficients.
6. The method of claim 2, wherein the evaluation of the multi-dimensional grid typhoon resistance is performed by a computer,
N 4 ＝k j J 1 +k l1 (L 1 +L 4 )+k l2 (L 2 +L 3 )+k m (M 1 +M 2 )+k o1 O 1 +k o2 O 2 +k p1 P 1 +k p2 P 2
wherein k is j 、k l1 、k l2 、k m 、k o1 、k o2 、k p1 And k p2 Are all weighted score coefficients.
7. The multi-dimensional power grid typhoon-resistant evaluation method according to claim 1, wherein the typhoon-resistant standard grades comprise a major typhoon-resistant standard, a minor typhoon-resistant standard and a general typhoon-resistant standard;
the power supply area division is divided into six areas A +, A, B, C, D and E according to the 'power distribution network planning design guide rule', and the power supply area division score A gd Comprises the following steps:
when the power supply grade is A + and A is 10; when the power supply grade is B, the score is 8; when the power supply grade is C, the score is 6; when the power supply grade is D, the grade is 4; when the power supply grade is E or below, the rating is 2;
according to Zhejiang electric network wind zone distribution diagram, a wind zone meeting the reference wind speed in 50 years is quantized, and a score A is given to the wind zone meeting the reference wind speed in 50 years ws Comprises the following steps:
when the wind speed is 37 m/s or above, the score is 80 points; the wind speed is 27 m/s to 37 m/s, and the score is 70; when the wind speed is 27 m/s or less, the score is 60;
historical disaster probability R d Obtained by the following formula:
wherein, T D The historical disaster times of the area are obtained; t is t zd The number of times of disaster suffered in Zhejiang history;
anti-typhoon standard grade scoring P ft Comprises the following steps:
P ft ＝A gd +A ws +R d *10
anti-typhoon standard grade scoring P ft The score of (a) is greater than or equal to 80 as a major defense standard, greater than or equal to 60 and less than 80 as a minor defense standard, and less than 60 as a general defense standard.
8. The multi-dimensional evaluation method for typhoon resistance of power grid according to claim 7,
when the typhoon prevention standard grade is the key typhoon prevention standard, if the typhoon resistance evaluation score G is greater than or equal to 90, the typhoon prevention standard is judged to be met by the evaluation object; if the anti-typhoon evaluation score G is greater than or equal to 80 and less than 90, the evaluation object is judged to basically reach the typhoon prevention standard; if the anti-typhoon evaluation score G is larger than 80, judging that the evaluation object does not reach the typhoon prevention standard;
when the typhoon prevention standard level is the secondary typhoon prevention standard, judging that the evaluation object comprehensively reaches the typhoon prevention standard if the typhoon resistance evaluation score G is greater than or equal to 80; if the anti-typhoon evaluation score G is more than or equal to 70 and less than 80, the evaluation object is judged to basically reach the typhoon prevention standard; if the anti-typhoon evaluation score G is larger than 70, judging that the evaluation object does not reach the typhoon prevention standard;
when the typhoon prevention standard level is a common typhoon prevention standard, if the typhoon resistance evaluation score G is greater than or equal to 70, the evaluation object is judged to fully reach the typhoon prevention standard; if the anti-typhoon evaluation score G is greater than or equal to 60 and less than 70, judging that the evaluation object basically reaches the typhoon prevention standard; and if the anti-typhoon evaluation score G is larger than 70, judging that the evaluation object does not reach the typhoon prevention standard.
9. The multi-dimensional grid anti-typhoon evaluation method according to claim 8, wherein said step S5 comprises the steps of:
s51: if the judgment result is that the evaluation object comprehensively reaches the anti-typhoon standard, ending; if the evaluation object basically meets the platform-prevention standard or does not meet the platform-prevention standard, the step S42 is executed;
s52: according to the four-dimensional index weighting calculation result in the step S2, analyzing the scoring proportion of the evaluation object in four dimensions of power grid robustness, equipment reliability, operation and maintenance management and emergency guarantee;
s53: if the evaluation object does not reach the platform prevention standard, reinforcing the secondary index or the tertiary index with low score in the dimensionality with the lowest score proportion, and returning to the step S2 after reinforcing;
s54: and if the evaluation object basically reaches the platform-prevention standard, sequencing the importance degrees of the four dimensions, carrying out optimization promotion on the secondary index or the tertiary index with low score in the dimension with higher importance degree, and returning to the step S2 after optimization promotion.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903058A (en) * | 2012-12-26 | 2014-07-02 | 中国电力科学研究院 | Assessment method of efficient operation of intelligent power distribution network |
| CN108053116A (en) * | 2017-12-14 | 2018-05-18 | 国网江苏省电力有限公司扬州供电分公司 | A kind of city elasticity distribution network restoration force estimation method |
| CN109118035A (en) * | 2018-06-25 | 2019-01-01 | 南瑞集团有限公司 | Typhoon wind damage caused by waterlogging evil power distribution network methods of risk assessment based on gridding warning information |
| CN111489091A (en) * | 2020-04-14 | 2020-08-04 | 广东电网有限责任公司广州供电局 | Comprehensive evaluation method for restoring force of power system |
| CN112287018A (en) * | 2020-11-06 | 2021-01-29 | 武汉理工大学 | Method and system for evaluating damage risk of 10kV tower under typhoon disaster |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4237610B2 (en) * | 2003-12-19 | 2009-03-11 | 株式会社東芝 | Maintenance support method and program |
-
2021
- 2021-03-31 CN CN202110353107.4A patent/CN113177858B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103903058A (en) * | 2012-12-26 | 2014-07-02 | 中国电力科学研究院 | Assessment method of efficient operation of intelligent power distribution network |
| CN108053116A (en) * | 2017-12-14 | 2018-05-18 | 国网江苏省电力有限公司扬州供电分公司 | A kind of city elasticity distribution network restoration force estimation method |
| CN109118035A (en) * | 2018-06-25 | 2019-01-01 | 南瑞集团有限公司 | Typhoon wind damage caused by waterlogging evil power distribution network methods of risk assessment based on gridding warning information |
| CN111489091A (en) * | 2020-04-14 | 2020-08-04 | 广东电网有限责任公司广州供电局 | Comprehensive evaluation method for restoring force of power system |
| CN112287018A (en) * | 2020-11-06 | 2021-01-29 | 武汉理工大学 | Method and system for evaluating damage risk of 10kV tower under typhoon disaster |
Non-Patent Citations (3)
| Title |
|---|
| 城市电网防灾应急评估体系的研究;吕冰等;《华东电力》;20140224(第02期);全文 * |
| 基于前景理论的智能电网脆弱性综合评价模型研究;李泽森;《中国优秀博硕士学位论文全文数据库（硕士）经济与管理科学辑》;20180315;J145-57 * |
| 茂名市配电网抗灾规划研究;余文辉等;《现代电力》;20120810(第04期);全文 * |
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