CN105160450B - A kind of method of power source planning containing energy efficiency power plant considering environmental factor - Google Patents
A kind of method of power source planning containing energy efficiency power plant considering environmental factor Download PDFInfo
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- CN105160450B CN105160450B CN201510399128.4A CN201510399128A CN105160450B CN 105160450 B CN105160450 B CN 105160450B CN 201510399128 A CN201510399128 A CN 201510399128A CN 105160450 B CN105160450 B CN 105160450B
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present invention relates to a kind of methods of power source planning containing energy efficiency power plant considering environmental factor, include the following steps：1) object function for the power source planning containing energy efficiency power plant for considering environmental factor is established, which is that planning cost of investment is made to minimize, and the planning cost of investment includes energy efficiency power plant cost, conventional power plant unit generation cost, CO2Discharge costs and SO2Discharge costs；2) constraints for the power source planning containing energy efficiency power plant for considering environmental factor is obtained；3) Generation Expansion Planning Model containing energy efficiency power plant for considering environmental factor is established according to object function and constraints；4) it uses interior point method to obtain the optimal solution for the Generation Expansion Planning Model containing energy efficiency power plant for considering environmental factor, keeps planning cost of investment minimum, so that it is determined that the type and capacity of energy efficiency power plant construction.It is characterized in that, compared with prior art, the present invention has many advantages, such as that algorithm is advanced, it is comprehensive to consider.
Description
Technical field
The present invention relates to power source planning fields, more particularly, to a kind of power source planning containing energy efficiency power plant considering environmental factor
Method.
Background technology
With the worsening of environmental pollution and being becoming tight day for energy supply, energy-saving and emission-reduction are worldwide by people
Attention, walk low-carbon path to economic development as the world realize sustainable development inevitable choice.China is with thermal power generation
Based on country, maintaining sustained and rapid growth due to China's economy in recent years so that the feelings of a large amount of shorts of electricity have occurred in some areas
Condition, it is simple to be difficult to meet the power demand in China by expansion unit capacity and enlarging power plant, but also unit may be brought
The problems such as operational efficiency is low, primary energy consumption is big, environmental pollution is serious.In order to maintain the sustainable health hair of China's economy
Exhibition, State Council's publication《The comprehensive programme of work of " 12th Five-Year Plan " energy-saving and emission-reduction》In clearly propose control energy consumption total amount
And total emissions of major pollutants, and propose to reinforce demand Side Management, widely popularize energy efficiency power plant, it can be seen that,
Energy efficiency power plant construction is the important content of current China's power construction.
Energy efficiency power plant refers to forming some ground by using the approach such as energy-efficient equipment and product, optimization power mode
The total action scheme in area, industry or enterprise's electrification transformation plan, reaches purpose identical with Jian Xin power plant, by the need of reduction
The quantity of electricity that " virtual plant " offer is provided is sought, realizes the purpose of energy conservation and pollution reduction.With practical new power plant construction
It compares, energy efficiency power plant carries out electric energy optimizing in former power supply system and obtains, no longer additional land occupation, consumption fossil combustion
The resources such as material have huge Social benefit and economic benefit.
Traditional power source planning method does not take into account that influence of the environmental factor to programmed cost, and the purport of energy efficiency power plant it
One is exactly to reduce pollutant emission, as environmental protection ideas gradually influences all trades and professions, therefore, necessary environment is considered in planning
Cost becomes new requirement and emphasis.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of algorithm is advanced, considers
The method of power source planning containing energy efficiency power plant of comprehensive consideration environmental factor.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of method of power source planning containing energy efficiency power plant considering environmental factor, includes the following steps：
1) object function for the power source planning containing energy efficiency power plant for considering environmental factor is established, which is that planning is made to throw
Cost minimization is provided, the planning cost of investment includes energy efficiency power plant cost, conventional power plant unit generation cost, CO2Discharge
Cost and SO2Discharge costs；
2) constraints for the power source planning containing energy efficiency power plant for considering environmental factor is obtained；
3) Generation Expansion Planning Model containing energy efficiency power plant for considering environmental factor is established according to object function and constraints；
4) it uses interior point method to obtain the optimal solution for the Generation Expansion Planning Model containing energy efficiency power plant for considering environmental factor, planning is made to throw
Cost minimization is provided, so that it is determined that the type and capacity of energy efficiency power plant construction.
The object function of the Generation Expansion Planning Model containing energy efficiency power plant of consideration environmental factor in the step 1) is：
Wherein, CCPPFor T hours fuel costs of conventional power plant unit operation,It is fired for the unit of conventional power plant unit i
Expect cost,For the capacity of conventional power plant unit i, NCFor the quantity of unit in conventional power plant, ηiIt is every for conventional power plant unit i
The average efficiency in year, T are conventional power plant unit annual utilization hours, CEPPFor the construction totle drilling cost of energy efficiency power plant,For efficiency
The unit construction cost of power plant j,For the capacity of energy efficiency power plant j, NEFor the quantity of energy efficiency power plant,WithRespectively
Conventional power plant runs T hours CO2And SO2Discharge costs, αCFor fossil fuel carbon content rate, αSFor fossil fuel sulfur-bearing rate, βC
It is converted into CO for C2Conversion coefficient, βSIt is converted into SO for S2Conversion coefficient, λCFor the release rate of C in fossil fuel, λSTo change
The release rate of S, C in stone fuelCFor CO2Discharge unit price, CSFor SO2Discharge unit price, b is coal consumption for power generation, εSFor relevant device
Synthesis desulfurating efficiency.
Constraints in the step 2) includes equality constraint and inequality constraints condition.
The equality constraint constrains for Line Flow, and Line Flow is constrained to active power flow calculating, calculates
Formula is：
PC-PL+PEθ=0-B
Wherein, PCFor conventional power plant capacity, PLFor load, PEFor energy efficiency power plant capacity, B is system admittance matrix, and θ is section
Point voltage phase angle.
The inequality constraints condition includes node voltage constraint, and conventional power plant capacity-constrained, energy efficiency power plant capacity are about
Beam, CO2Exhaust emission constraint, SO2Exhaust emission constraint and energy efficiency power plant cost constraint,
Node voltage constrains inequality：
0.9≤Vk≤1.1
Conventional power plant i capacity-constrained inequality is：
Energy efficiency power plant j capacity-constrained inequality is：
CO2Exhaust emission constraint constrains inequality：
SO2Exhaust emission constraint constrains inequality：
Energy efficiency power plant cost constraint inequality is：
Wherein, VkFor the voltage perunit value of k-th of node,For conventional power plant lower bound of capacity,For conventional power plant
Maximum size,For the maximum size of energy efficiency power plant,For CO2The upper limit is discharged,For SO2The upper limit is discharged,For efficiency
The power plant cost upper limit.
Compared with prior art, the present invention has the following advantages：
One, algorithm is advanced：The Generation Expansion Planning Model containing energy efficiency power plant of the present invention is a linear model, in model solution
Select Primal-dual Interior Point in algorithm, the characteristics of primal-dual interior method be will construct it is new without constrained objective letter
Number --- penalty is defined in feasible zone, and the extreme point of penalty is sought in feasible zone, that is, solves unconstrained problem
When exploration point always inside feasible zone, in this way, in the process for the sequence unconstrained optimization problem for solving lnner guide
In, the solution always feasible solution of obtained series unconstrained optimization problem, to which the constraint of Step wise approximation original is excellent inside feasible zone
The optimal solution of change problem, interior point method is insensitive to problem scale with iterations, convergence is rapid, strong robustness, computational accuracy
The setting of high, result and initial value contacts the advantages that not close.
Two, consider comprehensive：The present invention is when establishing the Generation Expansion Planning Model containing energy efficiency power plant for considering environmental factor by CO2Row
Put cost and SO2Discharge costs take into account carry out comprehensive analysis, and obtained result can reflect the influence of environmental factor, to containing
Energy efficiency power plant power source planning is made that positive effect.
Description of the drawings
Fig. 1 is the invention flow chart of the present invention.
Fig. 2 is the flow chart of interior point method of the present invention.
Fig. 3 is final system grid structure figure.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment：
As shown in Figure 1, a kind of method of power source planning containing energy efficiency power plant considering environmental factor, includes the following steps：
S1 establishes the object function for the power source planning containing energy efficiency power plant for considering environmental factor, which is that planning is made to throw
Cost minimization is provided, planning cost of investment includes energy efficiency power plant cost, conventional power plant unit generation cost, CO2Discharge costs and
SO2Discharge costs；
S2 obtains the constraints for the power source planning containing energy efficiency power plant for considering environmental factor；
S3 establishes the Generation Expansion Planning Model containing energy efficiency power plant for considering environmental factor according to object function and constraints；
S4 obtains the optimal solution for the Generation Expansion Planning Model containing energy efficiency power plant for considering environmental factor using interior point method, and planning is made to throw
Cost minimization is provided, the parameter of the optimal solution includes conventional power plant capacity PG, energy efficiency power plant capacity PE, node voltage V and node voltage
Phase angle theta, so that it is determined that the type and capacity of energy efficiency power plant construction.
The object function of the Generation Expansion Planning Model containing energy efficiency power plant of consideration environmental factor in step 1) is：
Wherein, CCPPFor T hours fuel costs of conventional power plant unit operation,It is fired for the unit of conventional power plant unit i
Expect cost,For the capacity of conventional power plant unit i, NCFor the quantity of unit in conventional power plant, ηiIt is every for conventional power plant unit i
The average efficiency in year, T are conventional power plant unit annual utilization hours, CEPPFor the construction totle drilling cost of energy efficiency power plant,For efficiency
The unit construction cost of power plant j,For the capacity of energy efficiency power plant j, NEFor the quantity of energy efficiency power plant,WithRespectively
Conventional power plant runs T hours CO2And SO2Discharge costs, αCFor fossil fuel carbon content rate, αSFor fossil fuel sulfur-bearing rate, βC
It is converted into CO for C2Conversion coefficient, βSIt is converted into SO for S2Conversion coefficient, λCFor the release rate of C in fossil fuel, λSTo change
The release rate of S, C in stone fuelCFor CO2Discharge unit price, CSFor SO2Discharge unit price, b is coal consumption for power generation, εSFor relevant device
Synthesis desulfurating efficiency.
Constraints in step 2) includes equality constraint and inequality constraints condition.
Equality constraint constrains for Line Flow, and Line Flow is constrained to active power flow calculating, and calculating formula is：
PG-PL+PEθ=0-B
Wherein, PGFor conventional power plant capacity, PLFor load, PEFor energy efficiency power plant capacity, B is system admittance matrix, and θ is section
Point voltage phase angle.
The inequality constraints condition includes node voltage constraint, and conventional power plant capacity-constrained, energy efficiency power plant capacity are about
Beam, CO2Exhaust emission constraint, SO2Exhaust emission constraint and energy efficiency power plant cost constraint,
Node voltage constrains inequality：
0.9≤Vk≤1.1
Conventional power plant i capacity-constrained inequality is：
Energy efficiency power plant j capacity-constrained inequality is：
CO2Exhaust emission constraint constrains inequality：
SO2Exhaust emission constraint constrains inequality：
Energy efficiency power plant cost constraint inequality is：
Wherein, VkFor the voltage perunit value of k-th of node,For conventional power plant lower bound of capacity,For conventional power plant
Maximum size,For the maximum size of energy efficiency power plant,For CO2The upper limit is discharged,For SO2The upper limit is discharged,For efficiency
The power plant cost upper limit.
Interior point method includes the following steps：
1, the initial solution space for meeting constraints, and the mould of power source planning containing energy efficiency power plant that will consider environmental factor are obtained
Type can be reduced to following form：
obj.min.f(x)
S.t.h (x)=0
Wherein, x=[PC, PE, V, θ], PCFor conventional power plant capacity matrix, PEFor energy efficiency power plant capacity matrix, V is node
Voltage matrix, θ are node phase angle matrix.
By introducing slack variable u and l, u and l meet u>0, l>0, convert inequality constraints to equality constraint：
G (x)-l=g
2, it is that Lagrangian is by model conversation：
In formula, y, z, w are Lagrange multiplier and meet y ≠ 0, z>0,w<0；μ is Discontinuous Factors, andDefine duality gap Gap=lTz-uTW, then
3, above-mentioned disturbance KKT equations are solved with Newton-Raphson method, obtains following equation group：
4, it solves above-mentioned equation group and obtains the correction amount of kth time iteration：
Wherein, αpAnd αdRespectively original steps and antithesis step-length, and
By successive ignition, when duality gap, Gap meets Gap<10-6When, if calculating convergence, can obtain making cost of investment
Minimum optimal value and the minimum value corresponds to conventional power plant capacity variable, energy efficiency power plant capacity variable, section in initial solution space
The value of point voltage quantities and each variable of node phase angle variable.The flow chart of interior point method is as shown in Figure 2.
The example of the present invention uses 18 node systems, carries out instance analysis.Final system rack is as shown in Figure 3.The implementation
Example utilizes Primal-dual Interior Point, and solution is iterated to the Generation Expansion Planning Model proposed：First, by inequality constraints
It is converted into equality constraint, and establishes Lagrangian；Then local derviation is asked to above-mentioned Lagrangian, obtains optimizing item
Part；Newton Algorithm is used to optimal condition, obtains update equation group；Above-mentioned update equation group is solved, and solves step-length, more
New original variable and Lagrange multiplier, obtain optimal solution after k iteration.The embodiment of the invention is after 19 iteration
Obtain optimal solution, the results showed that, after energy efficiency power plant is added, plan that total cost of investment is 4376137.8 in forcasted years interior power
Wan Yuan, wherein energy efficiency power plant cost of investment is 373747.1 ten thousand yuan, and conventional power plant operating cost is 2704521.8 ten thousand yuan, CO2
Discharge costs are 1558769.2 ten thousand yuan, SO2Discharge costs are 239099.7 ten thousand yuan；In contrast, if being added without energy efficiency power plant,
Plan that total cost of investment is 4977769.7 ten thousand yuan in forcasted years interior power, wherein conventional power plant operating cost is
2990075.3 ten thousand yuan, CO2Discharge costs are 1723349.8 ten thousand yuan, SO2Discharge costs are 264344.6 ten thousand yuan.
Claims (4)
1. a kind of method of power source planning containing energy efficiency power plant considering environmental factor, which is characterized in that include the following steps：
1) establish consider environmental factor the power source planning containing energy efficiency power plant object function, the object function be make planning investment at
This minimum, the planning cost of investment include energy efficiency power plant cost, conventional power plant unit generation cost, CO2Discharge costs
And SO2The object function of discharge costs, the power source planning containing energy efficiency power plant of the consideration environmental factor is：
Wherein, CCPPFor T hours fuel costs of conventional power plant unit operation,For conventional power plant unit i unit of fuel at
This,For the capacity of conventional power plant unit i, NCFor the quantity of unit in conventional power plant, ηiAnnual for conventional power plant unit i
Average efficiency, T are conventional power plant unit annual utilization hours, CEPPFor the construction totle drilling cost of energy efficiency power plant,For energy efficiency power plant
The unit construction cost of j,For the capacity of energy efficiency power plant j, NEFor the quantity of energy efficiency power plant,WithIt is respectively conventional
Power plant runs T hours CO2And SO2Discharge costs, αCFor fossil fuel carbon content rate, αSFor fossil fuel sulfur-bearing rate, βCTurn for C
Turn to CO2Conversion coefficient, βSIt is converted into SO for S2Conversion coefficient, λCFor the release rate of C in fossil fuel, λSFor fossil fuel
The release rate of middle S, CCFor CO2Discharge unit price, CSFor SO2Discharge unit price, b is coal consumption for power generation, εSFor the synthesis of relevant device
Desulfuration efficiency；
2) constraints for the power source planning containing energy efficiency power plant for considering environmental factor is obtained；
3) Generation Expansion Planning Model containing energy efficiency power plant for considering environmental factor is established according to object function and constraints；
4) use interior point method obtain consider environmental factor the Generation Expansion Planning Model containing energy efficiency power plant optimal solution, make planning investment at
This minimum, so that it is determined that the type and capacity of energy efficiency power plant construction.
2. a kind of method of power source planning containing energy efficiency power plant considering environmental factor according to claim 1, which is characterized in that
Constraints in the step 2) includes equality constraint and inequality constraints condition.
3. a kind of method of power source planning containing energy efficiency power plant considering environmental factor according to claim 2, which is characterized in that
The equality constraint constrains for Line Flow, and Line Flow is constrained to active power flow calculating, and calculating formula is：
PC-PL+PEθ=0-B
Wherein, PCFor conventional power plant capacity, PLFor load, PEFor energy efficiency power plant capacity, B is system admittance matrix, and θ is node electricity
Press phase angle.
4. a kind of method of power source planning containing energy efficiency power plant considering environmental factor according to claim 2, which is characterized in that
The inequality constraints condition includes node voltage constraint, conventional power plant capacity-constrained, energy efficiency power plant capacity-constrained, CO2Row
Put constraint, SO2Exhaust emission constraint and energy efficiency power plant cost constraint,
Node voltage constrains inequality：
0.9≤Vk≤1.1
Conventional power plant i capacity-constrained inequality is：
Energy efficiency power plant j capacity-constrained inequality is：
CO2Exhaust emission constraint constrains inequality：
SO2Exhaust emission constraint constrains inequality：
Energy efficiency power plant cost constraint inequality is：
Wherein, VkFor the voltage perunit value of k-th of node,For conventional power plant lower bound of capacity,For on conventional power plant capacity
Limit,For the maximum size of energy efficiency power plant,For CO2The upper limit is discharged,For SO2The upper limit is discharged,For energy efficiency power plant cost
The upper limit.
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| CN105870976B (en) * | 2016-04-15 | 2018-05-29 | 国家电网公司 | A kind of low-carbon dispatching method and device based on energy environment efficiency |
| CN107292423B (en) * | 2017-05-27 | 2020-12-22 | 上海电力学院 | Uncertainty method-based energy efficiency power plant optimization configuration and plant network planning method |
| CN107169607B (en) * | 2017-05-27 | 2020-12-22 | 上海电力学院 | Energy efficiency power plant optimization configuration and plant network coordination planning method based on cost |
| CN107221929B (en) * | 2017-05-27 | 2019-12-27 | 上海电力学院 | Energy efficiency power plant optimal configuration and plant network coordination planning method based on market benefits |
| CN107316112B (en) * | 2017-07-05 | 2020-12-25 | 国网能源研究院有限公司 | Thermal power generating unit emission reduction scheme customization method and system with optimal cost benefit |
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