CN103632206A - Two-part power transmission pricing method for trans-provincial power grid - Google Patents

Abstract

The invention relates to a pricing method for two-part power transmission of a cross-provincial power grid. The method comprises the following steps: 1) according to the use function of the power transmission project, dividing all the west-east power transmission projects into a common power transmission network and a special power transmission project; 2) dividing the price of the power transmission and transmission of the west-east power into seven price areas according to the current actual transaction situation and the future development plan of the power transmission and receiving transaction main body of the west-east power; 3) according to the use condition of each power transmission project from each price area to each west-east power transmission project, the investment of each power transmission project is allocated to each price area; 4) on the basis of the investment shared by each price area, calculating the corresponding annual permitted income of each price area based on the business period; 5) and determining the proportion of the capacity cost and the electric quantity cost, calculating the capacity cost and the electric quantity cost of each price area by combining the annual permitted income and the proportion of the capacity cost of each price area, and further calculating the corresponding capacity electricity price and electric quantity electricity price for settling the transmission cost. The invention can share the investment of the west-east power transmission projects on the public ground, improve the price making system of the west-east power transmission and better play the role of price leverage on the power transmission price.

Description

A kind of two Transmission Pricing methods processed of interprovincial power networks

Technical field

The present invention is two of a kind of interprovincial power networks Transmission Pricing methods processed, belongs to the innovative technology of two Transmission Pricing methods processed of interprovincial power networks.

Background technology

Transferring electricity from the west to the east is as the important component part of national strategy to develop western regions, since implementing, in order to realize, the western and eastern area is common, sustainable development and optimize allocation of resources and brought into play vital role, also for networking economizes (district), has brought significant economic benefit and social benefit.Yet, in recent years along with west area water power generating capacity significantly improves, transferring electricity from the west to the east power transmission forms to transfer to take water power as main, the factors such as undulatory property that water power is exerted oneself cause west-to-east power transmission electric weight uncertain, while making to adopt unitary system electric weight transmission of electricity valency, transmission of electricity company income is in close relations with actual trnamission capacity, thereby easily occurs two kinds of rough sledding: 1) because trnamission capacity is seldom taken in deficiency, the demand that is difficult to meet transmission of electricity company cost of compensation, reasonable profit and raises power grid construction capital; 2) because trnamission capacity is obtained very greatly superprofit, the interests of infringement transferring electricity from the west to the east transaction each side.Above-mentioned two situations are all unfavorable for the sustainable development of transferring electricity from the west to the east.Different from unitary system electric weight transmission of electricity valency, two transmission of electricity valencys processed by transmission of electricity expense be divided into the capacity payment irrelevant with trnamission capacity with and with trnamission capacity relevant two parts of electric weight expense, thereby alleviated the impact of trnamission capacity on transmission of electricity income, also the characteristic that more meets the link of transmitting electricity, therefore adopt two transmission of electricity valencys processed to be conducive to the reasonable disposition of resource, reduce the impact of trnamission capacity fluctuation on transmission of electricity company, control it and obtain rational income, thereby promote the sustainable development of transferring electricity from the west to the east, there is important and far-reaching practical significance.

Summary of the invention

The object of the invention is to consider the problems referred to above and provide a kind of and can be liberally the investment of each power transmission engineering of transferring electricity from the west to the east be shared, and improve transferring electricity from the west to the east transmission price and formulate a system, transmission of electricity valency is brought into play better to two Transmission Pricing methods processed of interprovincial power networks of the effect of lever of price.

Technical scheme of the present invention is: two Transmission Pricing methods processed of interprovincial power networks of the present invention, include following steps:

1), according to the use function of power transmission engineering, all transferring electricity from the west to the east power transmission engineerings are divided into and share power transmission network and special power transmission engineering;

2) according to transferring electricity from the west to the east power transmission be subject to electric transaction agent current real trade situation and future development program, transferring electricity from the west to the east transmission price is divided into Qi Gejia district;

3) service condition to each transferring electricity from the west to the east power transmission engineering according to Ge Jia district, by each power transmission engineering Investment Share Dao Gejia district;

4), on apportioned investment base, Ge Jia district, based on operational period measuring and calculating Ge Jia district, within corresponding year, permit income;

5) determine capacity payment with and the ratio of electric weight expense, in conjunction with the year in Ge Jia district permitting income and capacity cost ratio, the capacity payment in calculating Ge Jia district is used and electric weight expense, and then calculates corresponding capacity price of electricity and electricity price for settling accounts transmission of electricity expense.

Above-mentioned steps 3), in, interchange community network is made an investment in the Computation for apportionment formula sending between He Song Guangdong, Guangxi and is:

$T_{\mathrm{COM}\_\mathrm{GX}}=T_{\mathrm{COM}}\×\frac{P_{\mathrm{GX}}}{P_{\mathrm{GX}}+P_{\mathrm{GD}}}$

$T_{\mathrm{COM}\_\mathrm{GD}}=T_{\mathrm{COM}}\×\frac{P_{\mathrm{GD}}}{P_{\mathrm{GX}}+P_{\mathrm{GD}}}$

Wherein, T _cOMexchange the gross investment of community network, P _gXfor send the total volume in Guangxi, P by exchanging community network _gDfor send the total volume in Guangxi by exchanging community network.

Above-mentioned steps 3), in, the computing formula that each valency is distinguished stand power transmission engineering investment is as follows:

$Z_{\mathrm{TSQ}\_\mathrm{GX}}=T_{\mathrm{COM}\_\mathrm{GX}}\×\frac{P_{\mathrm{TSQ}\_\mathrm{GX}}}{P_{\mathrm{TSQ}\_\mathrm{GX}}+P_{\mathrm{GZ}\_\mathrm{GX}}}$

$Z_{\mathrm{GZ}\_\mathrm{GX}}=T_{\mathrm{COM}\_\mathrm{GX}}\×\frac{P_{\mathrm{GZ}\_\mathrm{GX}}}{P_{\mathrm{TSQ}\_\mathrm{GX}}+P_{\mathrm{GZ}\_\mathrm{GX}}}+T_{\mathrm{GZJW}}\×\frac{P_{\mathrm{GZ}\_\mathrm{GX}}}{P_{\mathrm{GZ}\_\mathrm{GX}}+P_{\mathrm{GZ}\_\mathrm{GD}}}$

$Z_{\mathrm{LT}\_\mathrm{GX}}=\frac{1}{2}\×T_{\mathrm{LT}}$

$Z_{\mathrm{TSQ}\_\mathrm{GD}}=\frac{P_{\mathrm{TSQ}\_\mathrm{GD}}(T_{\mathrm{COM}\_\mathrm{GD}}+T_{\mathrm{TGZL}})}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}}+\frac{P_{\mathrm{TSQ}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}+P_{\mathrm{LT}\_\mathrm{GD}}}$

$Z_{\mathrm{GZ}\_\mathrm{GD}}=\frac{P_{\mathrm{GZ}\_\mathrm{GD}}(T_{\mathrm{COM}\_\mathrm{GD}}+T_{\mathrm{TGZL}})}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}}+\frac{P_{\mathrm{GZ}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}{+P}_{\mathrm{LT}\_\mathrm{GD}}}+\frac{P_{\mathrm{GZ}\_\mathrm{GD}}{T}_{\mathrm{GZJW}}}{P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GX}}}+T_{\mathrm{GGZL}}$

$Z_{\mathrm{YN}\_\mathrm{GD}}=\frac{P_{\mathrm{YN}\_\mathrm{GD}}(T_{\mathrm{COM}\_\mathrm{GD}}+T_{\mathrm{TGZL}})}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}}+\frac{P_{\mathrm{YN}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}{+P}_{\mathrm{LT}\_\mathrm{GD}}}+T_{\mathrm{YNJW}}+T_{\mathrm{GGZL}}$

$Z_{\mathrm{LT}\_\mathrm{GD}}=\frac{P_{\mathrm{LT}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}+P_{\mathrm{LT}\_\mathrm{GD}}}+\frac{1}{2}{T}_{\mathrm{LT}}$

Wherein, P _{tSQ_GX}, P _{gZ_GX}, P _{lT_GX}, P _{tSQ_GD}, P _{gZ_GD}, P _{yN_GD}and P _{lT_GD}be respectively the maximum power transmission capacity of interchange that natural bridge send Guangxi, Guizhou to send ,Long beach, Guangxi to send Guangxi, natural bridge to send Guangdong, Guizhou to send Guangdong, Yunnan to send He Long beach, Guangdong to send valency district, Guangdong; T _{cOM_GX}and T _{cOM_GD}be respectively and send He Song Guangdong, Guangxi apportioned interchange community network investment; T _lTfor Long Tan sends construction investment; T _tGZLinvestment for Tianguang HVDC; T _jLZXfor sending the special power transmission engineering investment of interchange in Guangdong; T _gZJWfor Guizhou meets net construction investment, T _gGZLfor expensive wide DC engineering investment; T _yNJWfor Yunnan meets net construction investment, T _yGZLfor the wide DC engineering investment of cloud.

Above-mentioned steps 4) in, it is that zero equation is asked for that year allowance income meets net present value (NPV) under given internal rate of return by solution, and the expression formula of equation is:

$\mathrm{NPV}=\underset{t=1}{\overset{n}{\mathrm{\Σ}}}\frac{(I_t-O_t)}{{(1+i)}^t}=0$

In formula, NPV is net present value (NPV), I _tfor cash inflow, O _tfor cash outflow, i is capital internal rate of return, and n is the operational period time limit;

Wherein, t cash outflow O _twith cash inflow I _tcomputing formula is:

O _t=E+C _h+C _y+C _z+C _s

I _t=I+R

In formula, E is that capital drops into, C _hfor repaying capital, C _yfor operation cost, C _zfor value added tax and additional, C _sfor income tax; I is a year allowance income, and R is that salvage value of fixed assets reclaims.

Above-mentioned steps 5) the capacity cost ratio K computing formula in Zhong，Ge Jia district is:

$K=\frac{P_{\mathrm{ave}}}{P_{\max }}$

In formula, P _avethe annual power transmission capacity in Wei Jia district, P _maxfor maximum power transmission capacity of year;

Year in conjunction with Ge Jia district is permitted income I and capacity cost ratio K, capacity price of electricity p _ccomputing formula is:

$p_c=\frac{I\×K}{P}$

In formula, total power transmission capacity in P Wei Jia district,

Electricity price p _ecomputing formula is:

$p_e=\frac{I\×(1-K)}{P\×T\×(1-\mathrm{\Δp})}$

In formula, T utilizes hourage for appraising and deciding, Δ p Wei Jia district Network Loss Rate.

Above-mentioned steps 5) the Zhong，Ge Jia district expense W computing formula of transmitting electricity is accordingly:

W=p _c×P+p _e×Q

In formula, total power transmission capacity in P Wei Jia district, the power transmission electric weight in Q Wei Jia district billing cycle.

The present invention proposes the formulating method of two transmission price processed of transferring electricity from the west to the east, can liberally the investment of each power transmission engineering of transferring electricity from the west to the east be shared, and perfect transferring electricity from the west to the east transmission price formulates a system, transmission of electricity valency is brought into play better to the effect of lever of price, the present invention, to promoting the sustainable development of transferring electricity from the west to the east to have important practical significance, is a kind of two Transmission Pricing methods processed of convenient and practical interprovincial power networks.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of two Transmission Pricing methods processed of transferring electricity from the west to the east of the present invention.

Embodiment

Embodiment:

The present invention transfer electricity from the west to the east two Transmission Pricing methods processed schematic diagram as shown in Figure 1, the transmission price of the present invention transferring electricity from the west to the east adopts two Transmission Pricing methods processed to comprise the following steps:

1) power transmission engineering of transferring electricity from the west to the east is carried out to type division

It is that to take himself use function be foundation that the type of power transmission engineering is divided, and is mainly divided into two classes: share power transmission network and special power transmission engineering.

Shared power transmission network refers to that power transmission engineering is used jointly by all users, and its investment needs each side to carry out shared to sharing the usage degree of power transmission network.

Special power transmission engineering refers to that power transmission engineering is only used by specific individual user, and its investment only need to be born separately by user.Special power transmission engineering mainly comprises and connects net engineering, exchanges special power transmission engineering and the special power transmission engineering of direct current.

2) transferring electricity from the west to the east transmission price Jia district is divided

According to transferring electricity from the west to the east power transmission be subject to electric transaction agent current real trade situation and future development program, transferring electricity from the west to the east transmission price is divided into Qi Gejia district: natural bridge send Guangxi, natural bridge send Guangdong, Guangdong is sent in Guizhou, and Guangxi is sent in Guizhou, and Guangdong is sent in Yunnan, Long Tan send ，Long beach, Guangxi to send Guangdong.

3) cost of investment of all kinds of power transmission engineerings of transferring electricity from the west to the east is shared

1. share the Investment Share of power transmission network

Transferring electricity from the west to the east community network refers to day wide interchange one two three four times, one two three four times these circuits of expensive wide interchange part domestic in Guangxi, and the investment that exchanges community network is fed to Zhe Liangleijia district, He Song Guangxi, Guangdong by the pro rata distribution of sending the maximum power transmission capacity in Guangdong and Guangxi.

By exchanging community network, send the total volume P in Guangxi _gXcomputing formula is:

P _GX=P _{TSQ_GX}+P _{GZ_GX}

In formula, P _{tSQ_GX}for natural bridge send valency district, Guangxi by exchanging the maximum power transmission capacity of community network, P _{gZ_GX}for sending Guangxi by exchanging the maximum power transmission capacity of community network in Guizhou.

By exchanging community network, send the total volume P in Guangdong _gDcomputing formula is:

P _GD=P _{TSQ_GD}+P _{GZ_GD}+P _{YN_GD}-P _TGZL

In formula, P _{tSQ_GD}, P _{gZ_GD}, P _{yN_GD}being respectively natural bridge send Guangdong, Guizhou to send Guangdong and Yunnan to send Ge Jia district, Guangdong by exchanging the maximum power transmission capacity of community network, P _tGZLdesign capacity for Tianguang HVDC.

Send the Guangxi interchange community network that He Song Guangdong is shared investment T _{cOM_GX}and T _{cOM_GD}computing formula is:

$T_{\mathrm{COM}\_\mathrm{GX}}=T_{\mathrm{COM}}\×\frac{P_{\mathrm{GX}}}{P_{\mathrm{GX}}+P_{\mathrm{GD}}}$

$T_{\mathrm{COM}\_\mathrm{GD}}=T_{\mathrm{COM}}\×\frac{P_{\mathrm{GD}}}{P_{\mathrm{GX}}+P_{\mathrm{GD}}}$

In formula, T _cOMexchange the gross investment of community network.

2. send three, Guangxi valency to distinguish the Investment calculation at stand

The interchange community network investment T that send Guangxi to share _{cOM_GX}need further share natural bridge and send Guangxi and Guizhou to send valency district, Guangxi, Guizhou send valency district, Guangxi also to need to bear the part investment that Guizhou connects net engineering in addition, and Long Tan send valency district, Guangxi need bear half investment that Long Tan sends engineering.Therefore, natural bridge send Guangxi, Guizhou to send He Long beach, Guangxi to send these three valencys of Guangxi to distinguish the investment Z at stand _{tSQ_GX}, Z _{gZ_GX}, Z _{lT_GX}computing formula is respectively:

$Z_{\mathrm{TSQ}\_\mathrm{GX}}=T_{\mathrm{COM}\_\mathrm{GX}}\×\frac{P_{\mathrm{TSQ}\_\mathrm{GX}}}{P_{\mathrm{TSQ}\_\mathrm{GX}}+P_{\mathrm{GZ}\_\mathrm{GX}}}$

$Z_{\mathrm{GZ}\_\mathrm{GX}}=T_{\mathrm{COM}\_\mathrm{GX}}\×\frac{P_{\mathrm{GZ}\_\mathrm{GX}}}{P_{\mathrm{TSQ}\_\mathrm{GX}}+P_{\mathrm{GZ}\_\mathrm{GX}}}+T_{\mathrm{GZJW}}\×\frac{P_{\mathrm{GZ}\_\mathrm{GX}}}{P_{\mathrm{GZ}\_\mathrm{GX}}+P_{\mathrm{GZ}\_\mathrm{GD}}}$

$Z_{\mathrm{LT}\_\mathrm{GX}}=\frac{1}{2}\×T_{\mathrm{LT}}$

In formula, T _gZJWfor Guizhou connects net construction investment; T _lTfor Long Tan sends total investment of engineering.

3. send four, Guangdong valency to distinguish the Investment calculation at stand

The interchange community network investment T that send Guangdong to share _{cOM_GD}need to further share natural bridge send Guangdong, Guizhou to send Guangdong and Yunnan to send Zhe Sangejia district, Guangdong.This sends Si Gejia district, Guangdong outside and has also used special power transmission engineering, as connect net engineering, exchange special engineering and direct current special engineering, the investment of these special power transmission engineerings need to be shared according to the service condition in Si Gejia district, so natural bridge send Guangdong, Guizhou to send Guangdong, Yunnan to send He Long beach, Guangdong to send the Guangdong investment Z that Si Gejia district bears respectively _{tSQ_GD}, Z _{gZ_GD}, Z _{yN_GD}and Z _{lT_G}computing formula is as follows:

$Z_{\mathrm{TSQ}\_\mathrm{GD}}=\frac{P_{\mathrm{TSQ}\_\mathrm{GD}}(T_{\mathrm{COM}\_\mathrm{GD}}+T_{\mathrm{TGZL}})}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}}+\frac{P_{\mathrm{TSQ}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}+P_{\mathrm{LT}\_\mathrm{GD}}}$

$Z_{\mathrm{GZ}\_\mathrm{GD}}=\frac{P_{\mathrm{GZ}\_\mathrm{GD}}(T_{\mathrm{COM}\_\mathrm{GD}}+T_{\mathrm{TGZL}})}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}}+\frac{P_{\mathrm{GZ}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}{+P}_{\mathrm{LT}\_\mathrm{GD}}}+\frac{P_{\mathrm{GZ}\_\mathrm{GD}}{T}_{\mathrm{GZJW}}}{P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GX}}}+T_{\mathrm{GGZL}}$

$Z_{\mathrm{YN}\_\mathrm{GD}}=\frac{P_{\mathrm{YN}\_\mathrm{GD}}(T_{\mathrm{COM}\_\mathrm{GD}}+T_{\mathrm{TGZL}})}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}}+\frac{P_{\mathrm{YN}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}{+P}_{\mathrm{LT}\_\mathrm{GD}}}+T_{\mathrm{YNJW}}+T_{\mathrm{GGZL}}$

$Z_{\mathrm{LT}\_\mathrm{GD}}=\frac{P_{\mathrm{LT}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}+P_{\mathrm{LT}\_\mathrm{GD}}}+\frac{1}{2}{T}_{\mathrm{LT}}$

In formula, P _{lT_GD}for Long Tan send valency district, Guangdong by exchanging the maximum power transmission capacity of community network;

T _tGZLinvestment for Tianguang HVDC; T _jLZXfor sending the special power transmission engineering investment of interchange in Guangdong; T _gGZLfor expensive wide DC engineering investment; T _yNJWfor Yunnan meets net construction investment, T _yGZLfor the wide DC engineering investment of cloud.

4) calculate Ge Jia district and within corresponding year, permit income

In conjunction with resulting each valency of previous step calculating, distinguish the investment situation at stand, calculate the corresponding year allowance income in Ge Jia district based on operational period, circular is as follows:

1. the cost of each year in given price district operational period

Repaying principal and interest C _h:

$C_h=D\frac{j{(1+j)}^m}{{(1+j)}^m-1}$

In formula, D is loan number, and j is loan interest rate, and m is the repaying time limit.

Operation cost C _y:

C _y=Z _jlr _jl+Z _zlr _zl

In formula, Z _jlfor valency, distinguish the AC portion at stand and invest, r _jlfor exchanging operation cost rate; Z _zlfor valency, distinguish the direct current component at stand and invest, r _zlfor direct current operation cost rate.

Value added tax and additional C _z:

$C_z=\frac{I*r_z*(1+r_{\mathrm{cj}})}{1+r_z}$

In formula, I is a year allowance income, r _zfor VAT rate, r _cjfor urban construction expense and surtax for education expenses rate.

Income tax C _s:

C _s=r _s×(I-C _h-C _y-C _z)

In formula, r _sfor income tax rate.

2. given price district interior each year of operational period free cash flow and a year allowance are taken in

T cash outflow O _tcomputing formula is:

O _t=E+C _h+C _y+C _z+C _s

In formula, E is that capital drops into.

T cash inflow I _tcomputing formula is:

I _t=I+R

In formula, I is a year allowance income, and R is that salvage value of fixed assets reclaims.

Therefore, asking for a year equation for allowance income is:

$\mathrm{NPV}=\underset{t=1}{\overset{n}{\mathrm{\Σ}}}\frac{(I_t-O_t)}{{(1+i)}^t}=0$

In formula, NPV is net present value (NPV), and i is capital internal rate of return, and n is the operational period time limit.

By separating above-mentioned equation, ask for the year allowance income I in Ge Jia district.

5) calculate capacity price of electricity and the electricity price of two transmission of electricity valencys processed

The capacity cost ratio K that first calculates Ge Jia district, computing formula is:

$K=\frac{P_{\mathrm{ave}}}{P_{\max }}$

In formula, P _avethe annual power transmission capacity in Wei Jia district, P _maxfor maximum power transmission capacity of year.

According to the year in Ge Jia district permitting income I and capacity cost ratio K, calculated capacity expense and electric weight expense, and then calculate corresponding capacity price of electricity and electricity price.

Capacity price of electricity p _ccomputing formula is:

$p_c=\frac{I\×K}{P}$

In formula, total power transmission capacity in P Wei Jia district.

Electricity price p _ecomputing formula is:

$p_e=\frac{I\×(1-K)}{P\×T\×(1-\mathrm{\Δp})}$

In formula, T utilizes hourage for appraising and deciding, Δ p Wei Jia district Network Loss Rate.

6) clearing of Ge Jia district transmission of electricity expense

Adopt two system defeated Price Mechanisms Hou，Ge Jia districts expense W computing formula of transmitting electricity to be accordingly:

W=p _c×P+p _e×Q

In formula, total power transmission capacity in P Wei Jia district, the power transmission electric weight in Q Wei Jia district billing cycle.

Claims (6)

1. two of interprovincial power networks Transmission Pricing methods processed, is characterized in that including following steps:

1), according to the use function of power transmission engineering, all transferring electricity from the west to the east power transmission engineerings are divided into and share power transmission network and special power transmission engineering;

2) according to transferring electricity from the west to the east power transmission be subject to electric transaction agent current real trade situation and future development program, transferring electricity from the west to the east transmission price is divided into Qi Gejia district;

3) service condition to each transferring electricity from the west to the east power transmission engineering according to Ge Jia district, by each power transmission engineering Investment Share Dao Gejia district;

4), on apportioned investment base, Ge Jia district, based on operational period measuring and calculating Ge Jia district, within corresponding year, permit income;

5) determine capacity payment with and the ratio of electric weight expense, in conjunction with the year in Ge Jia district permitting income and capacity cost ratio, the capacity payment in calculating Ge Jia district is used and electric weight expense, and then calculates corresponding capacity price of electricity and electricity price for settling accounts transmission of electricity expense.

2. two of interprovincial power networks according to claim 1 Transmission Pricing methods processed, is characterized in that above-mentioned steps 3) in, interchange community network is made an investment in the Computation for apportionment formula sending between He Song Guangdong, Guangxi and is:

$T_{\mathrm{COM}\_\mathrm{GX}}=T_{\mathrm{COM}}\×\frac{P_{\mathrm{GX}}}{P_{\mathrm{GX}}+P_{\mathrm{GD}}}$

$T_{\mathrm{COM}\_\mathrm{GD}}=T_{\mathrm{COM}}\×\frac{P_{\mathrm{GD}}}{P_{\mathrm{GX}}+P_{\mathrm{GD}}}$

Wherein, T _cOMexchange the gross investment of community network, P _gXfor send the total volume in Guangxi, P by exchanging community network _gDfor send the total volume in Guangxi by exchanging community network.

3. two of interprovincial power networks according to claim 1 Transmission Pricing methods processed, is characterized in that above-mentioned steps 3) in, the computing formula that each valency is distinguished stand power transmission engineering investment is as follows:

$Z_{\mathrm{TSQ}\_\mathrm{GX}}=T_{\mathrm{COM}\_\mathrm{GX}}\×\frac{P_{\mathrm{TSQ}\_\mathrm{GX}}}{P_{\mathrm{TSQ}\_\mathrm{GX}}+P_{\mathrm{GZ}\_\mathrm{GX}}}$

$Z_{\mathrm{GZ}\_\mathrm{GX}}=T_{\mathrm{COM}\_\mathrm{GX}}\×\frac{P_{\mathrm{GZ}\_\mathrm{GX}}}{P_{\mathrm{TSQ}\_\mathrm{GX}}+P_{\mathrm{GZ}\_\mathrm{GX}}}+T_{\mathrm{GZJW}}\×\frac{P_{\mathrm{GZ}\_\mathrm{GX}}}{P_{\mathrm{GZ}\_\mathrm{GX}}+P_{\mathrm{GZ}\_\mathrm{GD}}}$

$Z_{\mathrm{LT}\_\mathrm{GX}}=\frac{1}{2}\×T_{\mathrm{LT}}$

$Z_{\mathrm{TSQ}\_\mathrm{GD}}=\frac{P_{\mathrm{TSQ}\_\mathrm{GD}}(T_{\mathrm{COM}\_\mathrm{GD}}+T_{\mathrm{TGZL}})}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}}+\frac{P_{\mathrm{TSQ}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}+P_{\mathrm{LT}\_\mathrm{GD}}}$

$Z_{\mathrm{GZ}\_\mathrm{GD}}=\frac{P_{\mathrm{GZ}\_\mathrm{GD}}(T_{\mathrm{COM}\_\mathrm{GD}}+T_{\mathrm{TGZL}})}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}}+\frac{P_{\mathrm{GZ}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}{+P}_{\mathrm{LT}\_\mathrm{GD}}}+\frac{P_{\mathrm{GZ}\_\mathrm{GD}}{T}_{\mathrm{GZJW}}}{P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GX}}}+T_{\mathrm{GGZL}}$

$Z_{\mathrm{YN}\_\mathrm{GD}}=\frac{P_{\mathrm{YN}\_\mathrm{GD}}(T_{\mathrm{COM}\_\mathrm{GD}}+T_{\mathrm{TGZL}})}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}}+\frac{P_{\mathrm{YN}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}{+P}_{\mathrm{LT}\_\mathrm{GD}}}+T_{\mathrm{YNJW}}+T_{\mathrm{GGZL}}$

$Z_{\mathrm{LT}\_\mathrm{GD}}=\frac{P_{\mathrm{LT}\_\mathrm{GD}}{T}_{\mathrm{JLZX}}}{P_{\mathrm{TSQ}\_\mathrm{GD}}+P_{\mathrm{GZ}\_\mathrm{GD}}+P_{\mathrm{YN}\_\mathrm{GD}}+P_{\mathrm{LT}\_\mathrm{GD}}}+\frac{1}{2}{T}_{\mathrm{LT}}$

Wherein, P _{tSQ_GX}, P _{gZ_GX}, P _{lT_GX}, P _{tSQ_GD}, P _{gZ_GD}, P _{yN_GD}and P _{lT_GD}be respectively the maximum power transmission capacity of interchange that natural bridge send Guangxi, Guizhou to send ,Long beach, Guangxi to send Guangxi, natural bridge to send Guangdong, Guizhou to send Guangdong, Yunnan to send He Long beach, Guangdong to send valency district, Guangdong; T _{cOM_GX}and T _{cOM_GD}be respectively and send He Song Guangdong, Guangxi apportioned interchange community network investment; T _lTfor Long Tan sends construction investment; T _tGZLinvestment for Tianguang HVDC; T _jLZXfor sending the special power transmission engineering investment of interchange in Guangdong; T _gZJWfor Guizhou meets net construction investment, T _gGZLfor expensive wide DC engineering investment; T _yNJWfor Yunnan meets net construction investment, T _yGZLfor the wide DC engineering investment of cloud.

4. two of interprovincial power networks according to claim 1 Transmission Pricing methods processed, is characterized in that above-mentioned steps 4) in, it is that zero equation is asked for that year allowance income meets net present value (NPV) under given internal rate of return by solution, the expression formula of equation is:

$\mathrm{NPV}=\underset{t=1}{\overset{n}{\mathrm{\Σ}}}\frac{(I_t-O_t)}{{(1+i)}^t}=0$

In formula, NPV is net present value (NPV), I _tfor cash inflow, O _tfor cash outflow, i is capital internal rate of return, and n is the operational period time limit;

Wherein, t cash outflow O _twith cash inflow I _tcomputing formula is:

O _t=E+C _h+C _y+C _z+C _s

I _t=I+R

In formula, E is that capital drops into, C _hfor repaying capital, C _yfor operation cost, C _zfor value added tax and additional, C _sfor income tax; I is a year allowance income, and R is that salvage value of fixed assets reclaims.

5. two of interprovincial power networks according to claim 1 Transmission Pricing methods processed, is characterized in that above-mentioned steps 5) the capacity cost ratio K computing formula in Zhong，Ge Jia district is:

$K=\frac{P_{\mathrm{ave}}}{P_{\max }}$

In formula, P _avethe annual power transmission capacity in Wei Jia district, P _maxfor maximum power transmission capacity of year;

Year in conjunction with Ge Jia district is permitted income I and capacity cost ratio K, capacity price of electricity p _ccomputing formula is:

$p_c=\frac{I\×K}{P}$

In formula, total power transmission capacity in P Wei Jia district,

Electricity price p _ecomputing formula is:

$p_e=\frac{I\×(1-K)}{P\×T\×(1-\mathrm{\Δp})}$

In formula, T utilizes hourage for appraising and deciding, Δ p Wei Jia district Network Loss Rate.

6. two of interprovincial power networks according to claim 1 Transmission Pricing methods processed, is characterized in that above-mentioned steps 5) the Zhong，Ge Jia district expense W computing formula of transmitting electricity is accordingly:

W=p _c×P+p _e×Q

In formula, total power transmission capacity in P Wei Jia district, the power transmission electric weight in Q Wei Jia district billing cycle.

Images