CN103632022A - Comprehensive evaluation system for electric power universal services - Google Patents

Abstract

The invention discloses a comprehensive evaluation system for electric power universal services. By the adoption of the comprehensive evaluation system for the electric power universal services, the condition of the electric power universal services in an area can be evaluated directly. According to the comprehensive evaluation system for the electric power universal services, two electric power universal service evaluation index systems are established for different electric power service objects; based on the two electric power universal service evaluation index systems, the subjective weight and the objective weight of an evaluation index are determined with an order ration analysis method and a variable coefficient method, and then a combination weight is determined with the game theory; finally, an evaluation value of the electric power universal services in the area is determined according to a reference value approaching method. Experimental results in a certain area show that by the adoption of the comprehensive evaluation system for the electric power universal services, the electric power universal service degree in a certain area can be evaluated accurately, and then the government is urged to improve rural electric power services based on the evaluation of the electric power universal service degree.

Description

Electric Power Universal Service overall evaluation system

Technical field

The invention belongs to power system automation technology field, be specifically related to a kind of Electric Power Universal Service overall evaluation system.

Background technology

Electric power is the important foundation of economy and social development, is also the important symbol of reality civilization and fairly comfortable life.Electric Power Universal Service relies on countries ' power that the private unable foundation works that completes is built up, bring into play on this basis the spontaneous regulating action in market, with the consumption of price signal guiding rural power, both reach the object of improving rural area infrastructure, pulling domestic demand, avoided again the expensive, inefficient of Public Goods supply.The universal service of electric power is an indispensable aspect of Rural Public Service, and solving agricultural, peasant, rural electricity consumption problem has become and promote regional economy to develop in harmony, improve local production and living conditions, shake off poverty and set out on the road to prosperity, realize the important content of the target of building a well-off society in an all-round way.At present, country has recognized that the importance of Electric Power Universal Service.Therefore, carrying out Electric Power Universal Service is to accelerate areas without electricity power construction paces, further solves the important foundation of electrical problem from far-off regions.

The Electric Power Universal Service concept of China can be described as: " whenever anyone within the scope of territory can enjoy power supply service and service quality and rate with affordable price is anywhere made no exception." it comprises three intensions: (1) availability, no matter user is anywhere, while whenever needing electricity consumption service, can access supply network, have the right to enjoy power supply service; (2) can endurance, the price of the power supply service that user obtains should be reasonably, can afford; (3) non-discrimination, all users should be put on an equal footing, and will ensure the electricity consumption right of backward areas and disadvantaged group simultaneously, to the unable poor people who pays the fees and the sick and weak disable person's the electricity charge to reduce or remit, preferential or help.

Summary of the invention

Technical matters to be solved by this invention is: the foundation of (1) assessment indicator system; (2) evaluation index weight determines; (3) the realization degree evaluation of Electric Power Universal Service.The present invention adopts algorithm and the combination tax power based on approaching reference value theoretical for basis, sets up the overall evaluation system of Electric Power Universal Service, and by a large amount of checking work, has analyzed validity and the feasibility of the method.

Technical scheme of the present invention is as follows:

Step 1: set up assessment indicator system

Electric Power Universal Service audient for different, is divided into two classes by Electric Power Universal Service assessment indicator system, i.e. I class Electric Power Universal Service assessment indicator system (in Table 1) and II class Electric Power Universal Service assessment indicator system (in Table 2).Wherein: I class Electric Power Universal Service assessment indicator system: do not have chlamydate area for electrical network.Comprise: nearer apart from electrical network, but backward in economy, electrical network is unlapped area still; Be located in outlying, have inconvenient traffic, away from electrical network, too high because of power supply cost, power consumption is too low, loss is excessive, extends electrical network uneconomical, thereby electrical network unlapped outlying mountain area still.II class Electric Power Universal Service assessment indicator system: covered but do not carried out the upgrading of rural power grids for electrical network, electrical network is weak, and electricity price is very high, and resident can not afford the remote poverty-stricken area of electricity.

Table 1I class Electric Power Universal Service assessment indicator system

Table 2II class Electric Power Universal Service assessment indicator system

Index computing formula is as follows:

1. current on time

(1) township's current on time: the ratio of the quantity in the quantity in energising township, somewhere and Zong township, this area, computing formula is as follows:

(2) village's current on time: the ratio of the quantity in the quantity in energising village, somewhere and Zong village, this area, that is:

(3) family current on time: the ratio of the quantity at the family that the quantity at energising family, somewhere and this area are total, that is:

2. electricity consumption level

(1) agricultural population year electricity for rural use per capita: refer to that agricultural population is average for each person every year for the electric weight of agricultural production.The computing formula of this index is as follows:

(2) agricultural population year domestic load per capita: refer to the average electric weight for living for each person every year of agricultural population.The computing formula of this index is as follows:

3. level is born in the electricity charge

(1) rural per-capita household electricity expenditure accounts for rural households' year personal consumption expenditure ratio per capita: refer to that everyone household electricity expenditure of the every annual of urban residents accounts for the proportion of its annual personal consumption expenditure.Computing formula is as follows:

(2) urban residents' year per capita electricity consumption expenditure account for urban residents' year per capita net income ratio: refer to that everyone electricity consumption expenditure of the every annual of urban residents (comprise household electricity expenditure and productive power pay) accounts for the proportion of its annual net return.Computing formula is as follows:

Step 2: the combining weights coefficient of determining evaluation index

The Weight Determination of evaluation index comprises subjective enabling legislation, objective weighted model and combination enabling legislation, the present invention adopts combination enabling legislation to determine the weight of evaluation index, wherein adopt order relation analytic approach to determine the subjective weight of index, adopt VC Method to determine the objective weight of evaluation index, adopt game theory to determine the combining weights of index.The concrete steps of algorithm are as follows:

Step 2.1 application order relation analytic approach is determined the subjective weight of evaluation index

(1) determine order relation

Importance by this n evaluation index about sewage treatment process sorts by descending order, might as well be designated as:

$x_1^{*}f{x}_2^{*}\mathrm{f\; L}{x}_m^{*}.$

(2) provide

with

between the relatively relatively judgement of significance level

According to r _kassignment reference table (in Table 1), to evaluation index

with

between the ratio r of significance level _k(k=m, m-1, L, 3,2) carry out assignment.

Table 1r _kassignment reference table

(3) weight coefficient λ _kcalculating

${\mathrm{\λ}}_m^{*}={(1+\underset{k=2}{\overset{m}{\mathrm{\Σ}}}\underset{i=k}{\overset{m}{\mathrm{\Σ}}}{r}_i)}^{-1},---\left(1\right)$

${\mathrm{\λ}}_{k-1}^{*}=r_k{\mathrm{\λ}}_k^{*},k=m,m-1,L,\mathrm{3,2}$

Wherein,

for evaluation index in order relation weight, evaluation index x _kweight λ _kweight for its opposite position place in order relation.

Step 2.2 application VC Method is determined the objective weight of evaluation index

Choose 5 areas closer with area to be evaluated as scheme, the number of index is n, and its corresponding desired value is x _ij(1≤i≤5,1≤j≤n), application VC Method determines that the concrete steps of j evaluation index weighted value are as follows:

(1) calculate the mean square deviation of j evaluation index

$D_j=\sqrt{\frac{1}{5}\underset{i=1}{\overset{5}{\mathrm{\Σ}}}{(x_{\mathrm{ij}}-\stackrel{\‾}{x_j})}^2},\stackrel{\‾}{x_j}=\frac{1}{5}\underset{i=1}{\overset{5}{\mathrm{\Σ}}}{x}_{\mathrm{ij}}---\left(2\right)$

In formula:

it is the average of j item evaluation index; D _jit is the mean square deviation of j item evaluation index.

(2) calculate the coefficient of variation of indices

${\mathrm{\δ}}_j=D_j/\stackrel{\‾}{x_j}---\left(3\right)$

(3) calculate the weight of every evaluation index

$r_j=\frac{{\mathrm{\δ}}_j}{\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{\mathrm{\δ}}_j}---\left(4\right)$

Step 2.3 application game theory is determined the combining weights of evaluation index

Subjective weight λ in evaluation index _jwith objective weight r _jbasis on, set up system of linear equations:

$\left[\begin{array}{cc}{\mathrm{rr}}^T& {\mathrm{r\λ}}^T\\ \mathrm{\λ}{r}^T& {\mathrm{\λ\λ}}^T\end{array}\right]\left[\begin{array}{c}{a}_1\\ a_2\end{array}\right]=\left[\begin{array}{c}{\mathrm{rr}}^T\\ {\mathrm{\λ\λ}}^T\end{array}\right]$

R, λ is respectively evaluation index objective weight vector sum subjective weight vectors, i.e. r=(r ₁, r ₂, L, r _n), λ=(λ ₁, λ ₂, L, λ _n).

By to solving above-mentioned system of linear equations, calculating parameter a ₁, a ₂, then it is normalized, that is:

$a_1^{*}=\frac{a_1}{a_1+a_2},$ $a_2^{*}=\frac{a_2}{a_1+a_2}---\left(5\right)$

The combining weights of j evaluation index is:

w _j＝a ₁r _j+a ₂λ _j。(6)

Step 3: employing approaches reference value method and carries out comprehensive evaluation

Step 3.1 is determined the reference value of Electric Power Universal Service

1) reference value of current on time: Electric Power Universal Service all will reach 100% at township's current on time, village's current on time and family current on time.

2) rural per-capita household electricity expenditure accounts for rural households' year reference value of personal consumption expenditure ratio per capita: when area to be evaluated is city or the area below city, its reference value is that the rural per-capita household electricity expenditure of area to be evaluated province of living in accounts for rural households' year average of personal consumption expenditure ratio per capita; If area to be evaluated is for economizing, by the rural per-capita household electricity expenditure of its phase neighbouring province (at least 2, comprise province to be evaluated) account for rural households' year per capita the average of personal consumption expenditure ratio as reference value.

3) urban residents' year per capita electricity consumption expenditure account for the reference value of urban residents' year per capita net income ratio: when area to be evaluated is city or the area below city, the average of take urban residents' year of area to be evaluated province of living in electricity consumption expenditure accounting for urban residents' year per capita net income ratio is per capita reference value; If area to be evaluated is for economizing, by urban residents' year of its phase neighbouring province (at least 2, comprise province to be evaluated) electricity consumption expenditure accounts for urban residents' year per capita net income ratio per capita average as reference value.

4) agricultural population year the reference value of electricity for rural use per capita: when area to be evaluated is city or the area below city, take area to be evaluated province of living in agricultural population year per capita the average of electricity for rural use be reference value; If area to be evaluated is for economizing, by the agricultural population year of its phase neighbouring province (at least 2, comprise province to be evaluated) per capita the average of electricity for rural use as reference value.

5) agricultural population year the reference value of domestic load per capita: when area to be evaluated is city or the area below city, take area to be evaluated province of living in agricultural population year per capita the average of domestic load be reference value; If area to be evaluated is for economizing, by the agricultural population year of its phase neighbouring province (at least 2, comprise province to be evaluated) per capita the average of domestic load as reference value.

Step 3.2 comprehensive evaluation

Manhattan distance between the Electric Power Universal Service evaluation index that application of formula (7) is calculated area to be evaluated reference value corresponding thereto, that is:

$d=\underset{j=1}{\overset{n}{\mathrm{\Σ}}}{w}_j|x_j-x_j^{*}|---\left(7\right)$

In formula, d is for evaluating regional Electric Power Universal Service integrated value, x _jfor area to be evaluated is about Electric Power Universal Service evaluation index value,

for the reference value that Electric Power Universal Service is evaluated, w _jcombining weights for Electric Power Universal Service evaluation index.

Obviously, comprehensive evaluation value is less, represents that the level of this area's Electric Power Universal Service is higher.

The present invention has adopted combination enabling legislation to determine the weight coefficient of Electric Power Universal Service evaluation index, not only can take into account the preference of Electric Power Universal Service decision maker to attribute, the subjectivity randomness of striving again reducing the power of tax, makes determined weight embody subjective information and objective information simultaneously simultaneously.In general, the decision-making technique clear concept that the present invention sets up, directly perceived, computation process is simple, and discrimination is large, is easy to computer programming.

Embodiment

Adopt the present invention to evaluate Yunnan Province's Electric Power Universal Service, concrete implementation step and result of calculation are as follows:

For convenience's sake, establish U ₁represent township's current on time, U ₂represent village's current on time, U ₃represent family current on time, U ₄expression agricultural population year is electricity for rural use, U per capita ₅expression agricultural population year is domestic load, U per capita ₆represent urban residents' year per capita household electricity expenditure account for rural households' year personal consumption expenditure ratio, U per capita ₇represent urban residents' year per capita electricity consumption expenditure account for urban residents' year per capita net income ratio.

(1) calculate the subjective weight of evaluation index

These parameters is sorted, and ranking results is as follows:

U ₆＞U ₅＞U ₄＞U ₇＞U ₂＞U ₃＞U ₁

The ratio of adjacent index is carried out to assignment, has:

r ₁＝1.2，r ₂＝1.4，r ₃＝1.2，r ₄＝1.4，r ₅＝1.2，r ₆＝1.6

The subjective weight coefficient that application of formula (1) obtains Electric Power Universal Service evaluation index is respectively:

${\mathrm{\λ}}_1^1=0.0491,$ ${\mathrm{\λ}}_2^1=0.0943,$ ${\mathrm{\λ}}_3^1=0.0786,$ ${\mathrm{\λ}}_4^1=0.1584,$ ${\mathrm{\λ}}_5^1=0.2217,$ ${\mathrm{\λ}}_6^1=0.2660,$ ${\mathrm{\λ}}_7^1=0.1320;$

Equally, simplify II class Electric Power Universal Service evaluation index, use V ₁expression agricultural population year is electricity for rural use per capita, V ₂expression agricultural population year is domestic load per capita, V ₃represent urban residents' year per capita household electricity expenditure account for rural households' year personal consumption expenditure ratio per capita, V ₄represent urban residents' year per capita electricity consumption account for urban residents' year per capita net income ratio.

These four indexs are sorted, obtain V ₃f V ₂f V ₄f V ₁, and their ratio is carried out to assignment, have: r ₁=1.4, r ₂=1.2, r ₃=1.2, and the subjective weight of application of formula (1) calculating II class Electric Power Universal Service evaluation index, for:

${\mathrm{\λ}}_1^2=0.1768,$ ${\mathrm{\λ}}_2^2=0.2546,$ ${\mathrm{\λ}}_3^2=0.3564,$ ${\mathrm{\λ}}_4^2=0.2122.$

(2) calculate the objective weight of evaluation index

According to each city, Yunnan Province, about Electric Power Universal Service, evaluation refers to value, respectively application of formula (2), formula (3) and formula (4) calculate respectively sample standard deviation, mean value, the coefficient of variation and weight, and the weight result of the weight of I type Electric Power Universal Service evaluation index and II type Electric Power Universal Service evaluation index is respectively in Table 3 and table 4.

The weight of table 3I type Electric Power Universal Service evaluation index

Index	U 1	U 2	U 3	U 4	U 5	U 6	U 7
								Standard deviation	0.6435	8.5595	6.6746	16.7702	12.2401	0.0054	0.0064
Mean value	98.996	91.046	85.26	77.7931	24.9620	0.0103	0.0311
								The coefficient of variation	0.0065	0.0940	0.0783	0.2156	0.4903	0.5200	0.2060
Weight	0.004	0.058	0.049	0.134	0.304	0.323	0.128

Table 4II type Electric Power Universal Service evaluation index weight

Index	V 1	V 2	V 3	V 4
					Standard deviation	16.7702	12.2401	0.0054	0.0064

Mean value	77.7931	24.9620	0.0103	0.0311
					The coefficient of variation	0.2156	0.4903	0.5200	0.2060
Weight	0.151	0.342	0.363	0.144

(3) calculate the combining weights of evaluation index

According to objective weight and the subjective weight of I type Electric Power Universal Service evaluation index, application of formula (5) is calculated respectively the weighting coefficient of objective weight and subjective weight, is: a respectively ₁=0.5644, a ₂=0.4356, according to the combining weights of formula (6) calculating I class Electric Power Universal Service evaluation index, be:

w ¹＝[0.0236，0.0738，0.0619，0.1446，0.2682，0.2982，0.1297]

Equally, can obtain the combining weights coefficient of I class Electric Power Universal Service evaluation index, for:

w ²＝(0.1602，0.2956，0.3243，0.2199)

Wherein, the weighting coefficient of subjective weight is a ₁=0.3574, the weighting coefficient of objective weight is a ₂=0.6426.

(4) calculate comprehensive evaluation value

According to Electric Power Universal Service assessment indicator system, gather Yunnan Province's Electric Power Universal Service evaluation index data and reference value, application approaches reference value method and carries out comprehensive evaluation, and concrete outcome is in Table 5 and table 6.

Table 5 Yunnan I type Electric Power Universal Service comprehensive evaluation value

Table 6 Yunnan II type Electric Power Universal Service comprehensive evaluation value

From the above results, can find out: the I of Yunnan Province class in 1997 and II class area Electric Power Universal Service realization degree increase, and illustrate that Electric Power Universal Service aspect, Yunnan Province has obtained larger development in these 5 years.

Claims (2)

1. Electric Power Universal Service overall evaluation system, its concrete steps are as follows:

1) set up Electric Power Universal Service assessment indicator system;

2) application order relation analytic approach is determined the subjective weight coefficient of Electric Power Universal Service evaluation index;

3) application VC Method is determined the objective weight coefficient of Electric Power Universal Service evaluation index;

4) application game theory is determined the combining weights coefficient of Electric Power Universal Service evaluation index;

5) determine the reference value of Electric Power Universal Service evaluation index;

6) application approaches reference value method the Electric Power Universal Service in somewhere is evaluated.

2. Electric Power Universal Service overall evaluation system according to claim 1, is characterized in that: for different Electric Power Universal Service objects, set up two kinds of Electric Power Universal Service assessment indicator systems.