CN103824155A - Method of energy-saving technology differentiation planning for basic-level power grid company - Google Patents

Abstract

The invention relates to a method of energy-saving technology differentiation planning for a basic-level power grid company. According to the method, basic requirements and general steps of energy conservation and emission reduction of a power grid company are summarized; ground-state data and optimized data of energy-saving indexes are compared; and then a power grid energy-saving potential analysis method is formulated. On the basis of summarization of the energy-saving technology and equipment, an energy-saving technology differentiation planning model is established; and the model is solved to complete an energy-saving technology planning scheme of the power grid company. With the method, feasibility and operability of energy-saving technology work development of the basic-level unit under the grand strategy of energy conservation and emission reduction are enhanced. The provided method is suitable for the energy-saving technology work development of the power grid basic-level unit.

Description

A kind of method for basic unit's grid company power-saving technology differentiation planning

Technical field

The present invention relates to a kind of method for basic unit's grid company power-saving technology differentiation planning, belong to electric system energy conservation plan technical field.

Background technology

Electric power energy problem is a Vital Strategic Problems that is related to China's socio-economic development, and State Statistics Bureau's communique points out, China's electricity consumption has accounted for 39.5% of total energy consumption.As the grid company that is user's transmission of electric energy; on existing basis, further improve strengthening energy conservation; can guarantee electrical network economy, high-quality operation, make significant contribution to reducing the required prime energy consumption of China's electrical production, ecology and environmental protection and sustainable development.

For deeply carrying out the requirement of " State Council is about the notice of printing and distributing the comprehensive programme of work of " 12 " energy-saving and emission-reduction ", each For Provincial Power Grid Corporation has successively formulated the comprehensive programme of work of " 12 " energy-saving and emission-reduction, has all obtained good effect instructing aspect energy saving technical reconstruction.Although but above scheme can be implemented every energy-saving index, completely for instructing the concrete energy conservation of grass-roots unit still to have difficulties.

Under existing conditions, for the concrete energy-saving index of higher level's grid company, how each basic unit grid company carries out energy conservation more in order and efficiently according to electrical network actual conditions is a difficulties urgently to be resolved hurrily.Differentiation planning is the important means of efficiently carrying out energy conservation in order, adhere to advanced technology, economical rationality, the principle of giving prominence to the key points, take regional power grid as object, specifically study the impact of different decision variables on power-saving technology, solve the concrete implementing measure problem of electrical network power-saving technology.

The present invention is according to the foundation of differential model, by adopting the contribution degree value of energy-saving potential of each main decision variables, from applicability, the cost performance equal angles of power-saving technology or equipment, the energy-saving technical scheme that higher level government or Utilities Electric Co. formulate is for instructing, promote carrying out in order of energy conservation, improve the actual effect that the energy conservation of electric company of basic unit is carried out.

Summary of the invention

The object of the invention is, a difficult problem of how to carry out more in order and efficiently energy conservation according to electrical network actual conditions in order to solve basic unit's grid company, the utility model provides a kind of power-economizing method of the planning of the differentiation for grid company.

The technical scheme that the present invention solves the problems of the technologies described above is as follows:

The present invention, by the analysis of the energy-saving potential to each main decision variables, sets up differentiation plan model.

It is object that power-saving technology differential model of the present invention refers to generally to improve electric company's energy-saving effect, the principle that employing is treated with a certain discrimination, by analyzing the energy-saving potential of the each major parameter of electric company, from applicability, the cost performance equal angles of power-saving technology or equipment, the energy-saving technical scheme that higher level government or Utilities Electric Co. formulate is for instructing, suiting measures to local conditions of research same category of device power-saving technology, selects inhomogeneity device energy conservation effect optimization order, has the energy conservation of carrying out of distinctiveness.

The power-economizing method of a kind of planning of the differentiation for grid company of the present invention, comprises the steps:

Step 1: according to basic unit's grid company jurisdiction electrical network practical operation situation, complete the ground state Energy-saving Data { α that in basic unit's grid company, energy-saving index i is corresponding ₁..., α _i..., α _ncollection;

Step 2: collect respectively the energy-saving index of country and higher level's grid company aspect, in conjunction with basic unit's electrical network reality, determine the Optimization of Energy Saving data { β corresponding with energy-saving index i ₁..., β _i..., β _n;

Step 3: by the ground state Energy-saving Data of each index i and Optimization of Energy Saving Data Comparison, use tidal current computing method to carry out energy-saving potential quantitative test, determine the energy-saving potential quantitative values c of each index i _i, draw and have the energy-saving potential set A of each index:

A＝{c ₁,...,c _i,...,c _n} (1)

Step 4: by collecting the existing energy-saving technical scheme of energy-saving index i, determine energy-saving index i power-saving technology possibility set D _i, that is:

D _i＝{d ₁,...,d _i,...,d _n} (2)

Reducing energy consumption cost set corresponding to power-saving technology means is

Step 5: pair set D _iin each scheme analyze, determine the energy-saving effect value of each scheme, count { η ₁..., η _i..., η _n, calculating formula is suc as formula (4):

${\mathrm{\η}}_i=\frac{{\mathrm{\ΔE}}_0-{\mathrm{\ΔE}}_i}{{\mathrm{\ΔE}}_0}---\left(4\right)$

Wherein Δ E _irepresent index i to carry out the improved Network Loss Rate of energy-saving scheme, Δ E ₀represent the ground state Network Loss Rate before reducing energy consumption;

Step 6: repeating step 1～5, analyze successively reducing energy consumption cost and the energy-saving effect value of each circuit according to formula (3) and formula (4), determine power-saving technology differential model, adopt the reducing energy consumption pogo plan of point circuit offshoot program, to solve whole energy index and the Investment Allocation problem of electric company of basic unit, model is as follows:

Meet:

$\begin{array}{cc}s.t& \underset{j=1}{\overset{m}{\mathrm{\Σ}}}\left(\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\mathrm{\ρ}}_j{\mathrm{\η}}_{\mathrm{ij}}\right)\≥Q---\left(6\right)\end{array}$

In formula, f is the whole structure of power-saving technology differentiation planning,

represent the improvement cost of i kind energy-saving technical scheme under j article of circuit, ρ _jbe the discount factor under the various energy-saving technical schemes of j article of circuit, the energy-saving effect lap causing for rejecting kinds of schemes combined action, η _ijrepresent the energy-saving effect value of i kind energy-saving technical scheme under j article of circuit, Q be basic unit electrical network formulate damage desired value falls;

Step 7: adopt genetic algorithm to solve power-saving technology planning differential model, draw energy-saving technical scheme suggestion.

The useful technique effect of the present invention is, supvr can pass through the application to the method, grasp the most effective, the power-saving technology that cost is minimum.In real energy-saving analysis, the method for adopting factor comparative analysis, by each index in energy-saving index system and corresponding reference value comparison, tries to achieve difference, thereby finds energy-conservation possibility.Staff can, according to model analysis, further be applied to electric company of basic unit, carries out efficiently in order energy conservation, forms differentiation management.The power-saving technology differentiation planing method that the present invention proposes, has increased actuality, operability that the grass-roots unit's energy-saving work under energy-saving and emission-reduction great strategy is carried out.

The inventive method is applicable to electrical network grass-roots unit and carries out energy-saving work.

Accompanying drawing explanation

Fig. 1 is the operational flowchart that the present invention is directed to the power-saving technology differentiation planing method of basic unit's grid company.

Embodiment

Below in conjunction with accompanying drawing and example, the present invention is further illustrated.Should be emphasized that, following explanation is only exemplary, rather than in order to limit the scope of the invention and to apply.

Take the power distribution network in somewhere as the present embodiment carries out power-saving technology planning, complete energy-conservation network loss target and investment for trnasforming urban land fund allocation.First in power distribution network, choose operation time limit circuit of a specified duration, that radius of electricity supply is grown, line loss per unit is higher and carried out reducing energy consumption tentative calculation, finally determined 6 circuits that have larger transformation space and economic benefit.Carry out the process description of energy conservation plan below as an example of 6 circuit L1～L6 example.

As Fig. 1, be the process flow diagram of power-saving technology differentiation planing method, detailed process is:

Step 1: access line L1 is example, according to basic unit's grid company jurisdiction electrical network practical operation situation, completes the collection of energy-saving index in basic unit's grid company and corresponding Energy-saving Data thereof.

Step 2: collect respectively the energy-saving index of country and higher level's grid company aspect, in conjunction with basic unit's electrical network reality, determine and energy-saving index and corresponding energy saving optimizing data thereof, as shown in table 1.

The each energy-saving index data of table 1 distribution line and energy-saving potential value

Energy-saving index	Circuit L1 energy-saving index data	Optimize achievement data	Energy-saving potential value
				Average day line loss per unit (%)	1.96	---	---
Average busbar voltage (kV)	10.4	10.6	0.728
				Average radius of electricity supply (km)	4.52	3.5	0.885
Wire diameter qualification rate (%)	80.2	90	0.766
				Average power factor (%)	0.93	0.95	0.743
The high distribution transforming ratio (%) of damaging	11.2	5	0.595
				Daily load fluctuating degree	0.3662	0.2000	0.842

Step 3: by the ground state Energy-saving Data of each index and Optimization of Energy Saving Data Comparison, use tidal current computing method to carry out energy-saving potential quantitative test, determine the energy-saving potential quantitative values of each index, as shown in table 1.

Step 4: by collecting the existing energy-saving technical scheme of energy-saving index, determine the power-saving technology possibility set of energy-saving index, and analyze reducing energy consumption cost corresponding to its power-saving technology means, as shown in table 2.

The energy-conservation cost (ten thousand yuan) of the each modification scheme of table 2

Step 5: pair set D _iin each scheme analyze, determine the energy-saving effect value of each scheme, count { η ₁..., η _i..., η _n, as shown in table 3, calculating formula is suc as formula (4):

${\mathrm{\η}}_i=\frac{{\mathrm{\ΔE}}_0-{\mathrm{\ΔE}}_i}{{\mathrm{\ΔE}}_0}---\left(4\right)$

Wherein Δ E _irepresent index i to carry out the improved Network Loss Rate of energy-saving scheme, Δ E ₀represent the ground state Network Loss Rate before reducing energy consumption.

Step 6: repeating step 1～5, analyze successively reducing energy consumption cost and the energy-saving effect value of each circuit according to formula (3) and formula (4), as shown in table 2 and table 3.Determine power-saving technology differential model, adopt the reducing energy consumption pogo plan of point circuit offshoot program, to solve whole energy index and the Investment Allocation problem of electric company of basic unit, model is as follows:

Meet:

$\begin{array}{cc}s.t& \underset{j=1}{\overset{m}{\mathrm{\Σ}}}\left(\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\mathrm{\ρ}}_j{\mathrm{\η}}_{\mathrm{ij}}\right)\≥Q\end{array}---\left(6\right)$

In formula, f is the whole structure of power-saving technology differentiation planning,

represent the improvement cost of i kind energy-saving technical scheme under j article of circuit, ρ _jbe the discount factor under the various energy-saving technical schemes of j article of circuit, the energy-saving effect lap causing for rejecting kinds of schemes combined action, η _ijrepresent the energy-saving effect value of i kind energy-saving technical scheme under j article of circuit, Q be basic unit electrical network formulate damage desired value falls.

The energy-saving effect value (%) of the each modification scheme of table 3

Step 7: adopt genetic algorithm to solve power-saving technology planning differential model, draw energy-saving technical scheme suggestion:

(1) circuit 1

Adjust voltage---adopt AVC system to carry out pressure regulation operation;

Circuit---the circuit that is JKYJ-150 by former circuit model is changed to JKYJ-240 in replacing;

(2) circuit 2

Adjust voltage---adopt AVC system to carry out pressure regulation operation;

Restringing---the circuit that is JKYJ-150 by former circuit model is changed to JKYJ-240;

Reactive-load compensation---the reactive-load compensation equipment that 6 groups of * 20kVar capacity are installed in distribution low-voltage side carries out low pressure dynamic compensation;

(3) circuit 3

Reactive-load compensation---the reactive-load compensation equipment that 2 groups of * 20kVar capacity are installed in distribution low-voltage side carries out low pressure dynamic compensation;

Change the high distribution transforming of damaging---the old high damage substation transformer of S7 series is replaced by the S13 Novel series distribution transforming of same capacity;

(4) circuit 4

Adjust voltage---adopt AVC system to carry out pressure regulation operation;

Circuit---the circuit that is JKYJ-185 by former circuit model is changed to JKYJ-240 in replacing;

(5) circuit 5

Adjust voltage---adopt AVC system to carry out pressure regulation operation;

Circuit---the circuit that is JKYJ-150 by former circuit model is changed to JKYJ-240 in replacing;

Reactive-load compensation---the reactive-load compensation equipment that 8 groups of * 20kVar capacity are installed in distribution low-voltage side carries out low pressure dynamic compensation;

(6) circuit 6

Adjust voltage---adopt AVC system to carry out pressure regulation operation;

Restringing---the circuit that is JKYJ-150 by former circuit model is changed to JKYJ-240;

This energy conservation plan is to carry out with falling to damage under the set prerequisite of target in gross investment, falls damage target and need to force, and the fund that is not allocated for transformation gathers as fund vacancy rate.Known planning investment amount is 5,000,000 yuan, and the line loss range of decrease that need to reach is 5%, by power-saving technology planning differential model is solved, obtain a set of reducing energy consumption scheme, after estimating transformation, average line loss decreases by 5.26%, 405.5 ten thousand yuan of uses of funds, and fund vacancy rate is 18.9%.

Method provided by the invention, take basic unit's grid company as starting point, by the investigation to energy-saving index ground state data, formulate Optimization of Energy Saving data, adopt trend to calculate comparative analysis energy-saving potential value, formulate thus energy saving retrofit technology scheme, damage effect and cost of investment take falling of its correspondence and set up power-saving technology differentiation plan model as variable, solving model draws concrete reducing energy consumption scheme, for the energy conservation plan of electrical network provides reliable operation scheme.

Claims (2)

1. for a method for basic unit's grid company power-saving technology differentiation planning, it is characterized in that, said method comprising the steps of:

Step 1: according to basic unit's grid company jurisdiction electrical network practical operation situation, complete the ground state Energy-saving Data { α that in basic unit's grid company, energy-saving index i is corresponding ₁..., α _i..., α _ncollection;

Step 2: collect respectively the energy-saving index of country and higher level's grid company aspect, in conjunction with basic unit's electrical network reality, determine the Optimization of Energy Saving data { β corresponding with energy-saving index i ₁..., β _i..., β _n;

Step 3: by the ground state Energy-saving Data of each index i and Optimization of Energy Saving Data Comparison, use tidal current computing method to carry out energy-saving potential quantitative test, determine the energy-saving potential quantitative values c of each index i _i, draw and have the energy-saving potential set A of each index:

A＝{c ₁,...,c _i,...,c _n} (1)

Step 4: by collecting the existing energy-saving technical scheme of energy-saving index i, determine energy-saving index i power-saving technology possibility set D _i, that is:

D _i＝{d ₁,...,d _i,...,d _n} (2)

Reducing energy consumption cost set corresponding to power-saving technology means is

Step 5: pair set D _iin each scheme analyze, determine the energy-saving effect value of each scheme, count { η ₁..., η _i..., η _n, calculating formula is as follows:

${\mathrm{\η}}_i=\frac{{\mathrm{\ΔE}}_0-{\mathrm{\ΔE}}_i}{{\mathrm{\ΔE}}_0}---\left(4\right)$

Wherein, Δ E _irepresent index i to carry out the improved Network Loss Rate of energy-saving scheme, Δ E ₀represent the ground state Network Loss Rate before reducing energy consumption;

Step 6: repeating step 1～5, analyze successively reducing energy consumption cost and the energy-saving effect value of each circuit according to formula (3) and formula (4), determine power-saving technology differential model, adopt the reducing energy consumption pogo plan of point circuit offshoot program, to solve whole energy index and the Investment Allocation problem of electric company of basic unit, model is as follows:

Meet:

$\begin{array}{cc}s.t& \underset{j=1}{\overset{m}{\mathrm{\Σ}}}\left(\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\mathrm{\ρ}}_j{\mathrm{\η}}_{\mathrm{ij}}\right)\≥Q---\left(6\right)\end{array}$

In formula, f is the whole structure of power-saving technology differentiation planning,

represent the improvement cost of i kind energy-saving technical scheme under j article of circuit, ρ _jbe the discount factor under the various energy-saving technical schemes of j article of circuit, the energy-saving effect lap causing for rejecting kinds of schemes combined action, η _ijrepresent the energy-saving effect value of i kind energy-saving technical scheme under j article of circuit, Q be basic unit electrical network formulate damage desired value falls;

Step 7: adopt genetic algorithm to solve power-saving technology planning differential model, draw energy-saving technical scheme suggestion.

2. a kind of method for basic unit's grid company power-saving technology differentiation planning according to claim 1, it is characterized in that, described power-saving technology differentiation is that generally to improve electric company's energy-saving effect be object, the principle that employing is treated with a certain discrimination, by analyzing the energy-saving potential of the each major parameter of electric company, from the applicability of power-saving technology or equipment, cost performance equal angles, the energy-saving technical scheme that higher level government or Utilities Electric Co. formulate is for instructing, suiting measures to local conditions of research same category of device power-saving technology, select inhomogeneity device energy conservation effect optimization order, there is the energy conservation of carrying out of distinctiveness.

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