CN103762619A - Nuclear power involvement grid peak shaving judging method based on grid peak shaving capacity balancing - Google Patents

Abstract

The invention discloses a nuclear power involvement grid peak shaving judging method based on grid peak shaving capacity balancing. The method is based on operation data of a system and the characteristic quantity of the system is extracted. The characteristic quantity comprises a unit involvement grid peak shaving sequence, different peak shaving means force outputting conditions, the adjustable capacity, the load level of the grid and the like. The peak shaving capacity conditions which have peak shaving priority over all peak shaving means of a nuclear power unit are calculated and whether the peak shaving capacity conditions meet the requirements of the grid or not is judged. The requirements for the mode of the nuclear power involvement grid and the peak shaving depth are determined. Finally, the nuclear power involvement grid peak shaving depth range is determined by combining with nuclear power self power adjusting constraints. By combining with actual requirements of the grid and according to the peak shaving priority, nuclear power is brought into grid peak shaving. Factors such as grid economy, safety, reliability and the like are considered and the peak shaving pressure of the grid is relieved.

Description

A kind of nuclear power based on peak load regulation network capacitance balance participates in peak load regulation network determination methods

Technical field

The invention belongs to field of power, be specifically related to a kind of nuclear power based on peak load regulation network capacitance balance and participate in peak load regulation network determination methods.

Background technology

It is predicted, the nuclear power installed capacity of the year two thousand twenty China will be over 7,500 ten thousand kilowatts, and energy output will reach 8%; At subregion electrical network, nuclear power energy output reaches more than 15%, and nuclear power is generally with basic load operation, along with its ratio in electric power system continues to increase, grows with each passing day to the pressure that the peaking operation of electrical network brings.In addition, along with the variation of China's electricity market relation between supply and demand, power load characteristic gradually changes, and electrical network peak-valley difference continues to expand, and peak load regulation network pressure also increases thereupon; Interconnected along with electrical network simultaneously, the increasing rapidly of power load, some electrical networks are accepted outskirt electric power increasing year by year, and outskirt power peak regulation is limited in one's ability, has more aggravated the peak regulation pressure of electrical network.Therefore,, along with the rapid growth of Analyzing Total Electricity Consumption and the continuation of electrical network peak-valley difference expand, peak shaving pressure further aggravates.

The research in China's nuclear power participation peak load regulation network field is substantially blank.In nuclear power installation large percentage country, as France, Korea S, Japan, the U.S., Germany etc., nuclear power generating sets all participate in peak load regulation network operation.Especially in France, nuclear power installation ratio nearly 80%, most of nuclear power generating sets need participate in peaking operation; China's nuclear power generating sets are generally with basic load operation, and theoretical research and practical experience that it is participated in to peak load regulation network comparatively lack, substantially blank aspect the theoretical research of nuclear power participation peak load regulation network, based on this, have proposed the present invention.

Summary of the invention

In order to overcome the defect of prior art, the object of the invention is to propose a kind of nuclear power based on peak load regulation network capacitance balance and participate in peak load regulation network determination methods, the method can be calculated pattern and the degree of depth that nuclear power participates in peak load regulation network, apply to power system operation, can be each power plant's operational mode of system call personnel placement reference is provided, for nuclear power generating sets participate in peak load regulation network, provide foundation.

For achieving the above object, the present invention is achieved through the following technical solutions:

Nuclear power based on peak load regulation network capacitance balance participates in a peak load regulation network determination methods, comprises the steps:

A, by each peak load regulation means that determine to participate in peak load regulation network and the nuclear power generating sets peak regulation means following sequence X of formation that sorts:

X＝{G ₁，…，G _i，…，G _n}

In formula, G _ifor peak regulation means i; N is that regional power grid comprises that nuclear power generating sets are at the sum of interior all peak load regulation means.

The situation of the exerting oneself P of each unit in B, sequence of calculation X _gi, adjustable exerting oneself and network load level, the size of the situation of relatively exerting oneself and network load level, carries out upper peak regulation or lower peak regulation to judge to electrical network; All units adjustable exerted oneself and comprises the maximum adjustable Δ P that exerts oneself that makes progress _giwith the downward adjustable δ P that exerts oneself of maximum _gi, network load level comprises electrical network peak load P _ljmaxwith electrical network minimum load P _ljmin;

In C, sequence of calculation X, be arranged in the peak of the front all peak load regulation means of nuclear power generating sets;

D, judge that peak is whether sufficient, as abundance, do not need nuclear power generating sets to participate in peak load regulation network; As inadequate, need nuclear power generating sets participate in peak load regulation network and continue step e;

E, according to the vacancy of peak and nuclear power generating sets power, adjust constraints, definite kernel group of motors participates in the peak regulation degree of depth of peak load regulation network.

Further, in described steps A, each peak load regulation means that determine to participate in peak load regulation network comprise gets in touch with any or all of in section peak regulation between Hydropower Unit peak regulation, fired power generating unit peak regulation, pumped storage peak load regulation, nuclear power generating sets peak regulation, coal-fired peak load regulation, combustion gas peak load regulation, fuel oil peak load regulation and regional power grid.

Further, in described step B, in sequence X, the situation of exerting oneself of all units is:

$P_G=\{P_{G1},...,P_{\mathrm{Gi}},...,P_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{P}_{\mathrm{Gi}}$

In formula, P _gfor the per day gross capability of plan of all peak load regulation means, P _gibe a peak load regulation means G _iper day the exerting oneself of plan;

The maximum of all units adjustable the exerting oneself and maximum adjustable exerting oneself downwards that make progress, is respectively:

${\mathrm{\ΔP}}_G=\{{\mathrm{\ΔP}}_{G1},...,{\mathrm{\ΔP}}_{\mathrm{Gi}},...,{\mathrm{\ΔP}}_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\mathrm{\ΔP}}_{\mathrm{Gi}}$

${\mathrm{\δP}}_G=\{{\mathrm{\δP}}_{G1},...,{\mathrm{\δP}}_{\mathrm{Gi}},...,{\mathrm{\δP}}_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\Σ}}}{\mathrm{\δP}}_{\mathrm{Gi}}$

In formula, Δ P _gfor the maximum of all peak load regulation means in network load peak period adjustable the exerting oneself that make progress, Δ P _gifor network load peak period one peak load regulation means G _imaximum adjustable the exerting oneself that make progress; δ P _gfor downward adjustable the exerting oneself of maximum of all peak load regulation means of network load low ebb phase, δ P _gifor network load low ebb phase one peak load regulation means G _idownward adjustable the exerting oneself of maximum;

Described electrical network peak load and electrical network minimum load, be respectively:

$P_{L\max }=\{P_{L1\max },...,P_{\mathrm{Lj}\max },...,P_{\mathrm{Lm}\max }\}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}{P}_{\mathrm{Lj}\max }$

$P_{L\min }=\{P_{L1\min },...,P_{\mathrm{Lj}\min },...,P_{\mathrm{Lm}\min }\}=\underset{j=1}{\overset{m}{\mathrm{\Σ}}}{P}_{\mathrm{Lj}\min }$

In formula, m is the sum of all provinces net in regional power grid; P _lmaxfor electrical network peak load; P _ljmaxfor economizing net j peak load in electrical network; P _lminfor electrical network minimum load, P _ljminfor economizing net j minimum load in electrical network.

Further, in described step B, the method that judgement is carried out upper peak regulation or lower peak regulation to electrical network comprises:

Work as P _g< P _lmaxtime, need electrical network to carry out upper peak regulation;

Work as P _g> P _lmintime, need electrical network to carry out lower peak regulation.

Further, the method for described step C comprises:

In C-1, consideration sequence X, each the peak load regulation means collating sequence X ' of sequence before nuclear power generating sets peak regulation means is:

X′＝{g ₁，…，G _k，…，G _h}

In formula, G _kfor the peak load regulation means k of sequence before nuclear power generating sets peak regulation means in sequence X; H is all peak load regulation means sums of sequence before nuclear power generating sets peak regulation means;

C-2, when electrical network is carried out to upper peak regulation, the upper peak D of calculated permutations all peak load regulation means before nuclear power generating sets by the following method _u:

First, the maximum of all peak load regulation means of calculated permutations before nuclear power generating sets adjustable the exerting oneself that make progress:

${{\mathrm{\&Delta;P}}_G}^{\&prime;}=\{{\mathrm{\&Delta;P}}_{G1},...,{\mathrm{\&Delta;P}}_{\mathrm{Gk}},...,{\mathrm{\&Delta;P}}_{\mathrm{Gh}}\}=\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}$

Secondly, the upper peak D of all peak load regulation means of calculated permutations before nuclear power generating sets _ufor:

$D_U=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}-\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }$

In formula, α is network load peak period spinning reserve coefficient, Δ P _gkfor the maximum of the peak load regulation means k of sequence before nuclear power generating sets adjustable the exerting oneself that make progress;

C-3, when electrical network is carried out to lower peak regulation, the lower peak D of calculated permutations all peak load regulation means before nuclear power generating sets by the following method _l:

First, downward adjustable the exerting oneself of the maximum of all peak load regulation means of calculated permutations before nuclear power generating sets:

${{\mathrm{\&delta;P}}_G}^{\&prime;}=\{{\mathrm{\&delta;P}}_{G1},...,{\mathrm{\&delta;P}}_{\mathrm{Gk}},...,{\mathrm{\&delta;P}}_{\mathrm{Gh}}\}=\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}$

Secondly, the lower peak of all peak load regulation means of calculated permutations before nuclear power generating sets is:

$D_L=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}$

In formula, β is network load low ebb phase spinning reserve coefficient, δ P _gkdownward adjustable the exerting oneself of maximum for the peak load regulation means k of sequence before nuclear power generating sets.

Further, in described step D, judge whether sufficient method is peak:

D-1, when electrical network is carried out to upper peak regulation, if be arranged in the upper peak D of all peak load regulation means before nuclear power generating sets _u< 0, represents that on electrical network, peak is not enough, needs nuclear power generating sets to participate in peak regulation on electrical network, and nuclear power generating sets need to increase the operation of exerting oneself;

D-2, when electrical network is carried out to lower peak regulation, if be arranged in the lower peak D of all peak load regulation means before nuclear power generating sets _l< 0, represents that under electrical network, peak is not enough, needs nuclear power generating sets to participate in peak regulation under electrical network, and nuclear power generating sets need to reduce the operation of exerting oneself.

Further, in described step e, the peak regulation degree of depth method that definite kernel group of motors participates in peak load regulation network comprises:

E-1, when electrical network is carried out to upper peak regulation, first, consider the vacancy of peak, even D ' _u=D _u+ Δ P>=0;

In formula, D ' _ufor the upper peak of all peak load regulation means after nuclear power generating sets participation peak load regulation network, the vacancy that Δ P is peak, Δ P=μ γ ₁p _n, μ is regional power grid nuclear power generating sets number of units, P _nfor nuclear power generating sets nominal operation power, $D_U=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}-\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max },$ Nuclear power generating sets participate in peak regulation degree of depth γ in the minimum of electrical network ₁for:

${\mathrm{\&gamma;}}_1\&GreaterEqual;\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }+\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}-\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}}{{\mathrm{\&mu;P}}_n}$

Secondly, consider nuclear power generating sets power adjustment constraints, the maximum operate power of nuclear power generating sets is no more than its rated power, peak regulation degree of depth γ in the maximum of nuclear power generating sets participation electrical network ₂for:

${\mathrm{\&gamma;}}_2\&le;\frac{P_n-P_0}{P_n}=\frac{P_n-{\mathrm{\&xi;P}}_n}{P_n}=1-\mathrm{\&xi;}$

In formula, P ₀for nuclear power generating sets operate power, P ₀=ξ P _n, ξ is the share that nuclear power generating sets operate power accounts for nominal operation power;

Finally, according to γ ₁and γ ₂the degree of depth γ that draws peak regulation on nuclear power generating sets participation electrical network is:

$\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }+\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\max }-\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}}{{\mathrm{\&mu;P}}_n}\&le;\mathrm{\&gamma;}\&le;1-\mathrm{\&xi;}$

E-2, when electrical network is carried out to lower peak regulation, first, consider the vacancy of peak, even D ' _l=D _l+ δ P>=0;

In formula, D ' _lfor the lower peak of all peak load regulation means after nuclear power generating sets participation peak load regulation network, the vacancy that δ P is peak, $D_L=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}},$ δ P=μ η ₁p _n, nuclear power generating sets participate in peak regulation degree of depth η under the minimum of electrical network ₁for:

${\mathrm{\&eta;}}_1\&GreaterEqual;\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}}{{\mathrm{\&mu;P}}_n}$

Secondly, peak regulation degree of depth η under the maximum that nuclear power generating sets participate in electrical network is set ₂for:

${\mathrm{\&eta;}}_2\&le;\frac{P_0-P_{\min }}{P_n}=\frac{{\mathrm{\&xi;P}}_n-{\mathrm{\&tau;P}}_n}{P_n}=\mathrm{\&xi;}-\mathrm{\&tau;}$

In formula, P _minfor nuclear power generating sets are minimum, allow operate power, P _min=τ P, τ is the minimum shares that allow operate power to account for nominal operation power of nuclear power generating sets.

Finally, according to η ₁and η ₂the degree of depth η that draws peak regulation under nuclear power generating sets participation electrical network is::

$\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\min }}{{\mathrm{\&mu;P}}_n}\&le;\mathrm{\&eta;}\&le;\mathrm{\&xi;}-\mathrm{\&tau;}.$

Compared with prior art, the beneficial effect that the present invention reaches is:

Nuclear power based on peak load regulation network capacitance balance of the present invention participates in peak load regulation network method of discrimination, can obtain pattern and the degree of depth that nuclear power participates in peak load regulation network, for electric power system unit operation mode arranges to provide reference frame; The present invention, in conjunction with electrical network actual demand, according to peak regulation priority, includes nuclear power in peak load regulation network, has both considered the factors such as electrical network economy, fail safe, reliability, has alleviated again peak load regulation network pressure.

Accompanying drawing explanation

Fig. 1 is the flow chart that the nuclear power based on peak load regulation network capacitance balance of the present invention participates in peak load regulation network determination methods.

Embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.

The invention provides a kind of nuclear power based on peak load regulation network capacitance balance and participate in peak load regulation network determination methods, Fig. 1 is the flow chart that the nuclear power based on peak load regulation network capacitance balance of the present invention participates in peak load regulation network determination methods, and the method comprises the steps:

Steps A, each peak load regulation means of peak load regulation network and the nuclear power generating sets peak regulation means formation sequence X that sorts will determine be participated in.

Dissimilar unit participates in peak load regulation network sequence, can, with reference to the sequence of energy-saving power generation dispatching and the size of dissimilar power supply peak modulation capacity, determine peak load regulation network collating sequence.Each peak load regulation means that determine to participate in peak load regulation network comprise gets in touch with any or all of in section peak regulation between Hydropower Unit peak regulation, fired power generating unit peak regulation, pumped storage peak load regulation, nuclear power generating sets peak regulation, coal-fired peak load regulation, combustion gas peak load regulation, fuel oil peak load regulation and regional power grid.This regional power grid considers the factors such as economy, fail safe, reliability, can determine that the peak regulation collating sequence of electrical network is:

X＝{G ₁，…，G _i，…，G _n} (1)

In formula, G _ifor peak regulation means i; N is that regional power grid comprises that nuclear power generating sets are at the sum of interior all peak load regulation means.

The situation of the exerting oneself P of each unit in step B, sequence of calculation X _gi, adjustable exerting oneself and network load level, the size of the situation of relatively exerting oneself and network load level, carries out upper peak regulation or lower peak regulation to judge to electrical network.

In sequence X, the situation of exerting oneself of all units is:

$P_G=\{P_{G1},...,P_{\mathrm{Gi}},...,P_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}---\left(2\right)$

In formula, P _gfor the per day gross capability of plan of all peak load regulation means, P _gibe a peak load regulation means G _iper day the exerting oneself of plan;

All units adjustable exerted oneself and comprises the maximum adjustable Δ P that exerts oneself that makes progress _giwith the downward adjustable δ P that exerts oneself of maximum _gi, be respectively:

${\mathrm{\&Delta;P}}_G=\{{\mathrm{\&Delta;P}}_{G1},...,{\mathrm{\&Delta;P}}_{\mathrm{Gi}},...,{\mathrm{\&Delta;P}}_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gi}}---\left(3\right)$

${\mathrm{\&delta;P}}_G=\{{\mathrm{\&delta;P}}_{G1},...,{\mathrm{\&delta;P}}_{\mathrm{Gi}},...,{\mathrm{\&delta;P}}_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gi}}---\left(4\right)$

In formula, Δ P _gfor the maximum of all peak load regulation means in network load peak period adjustable the exerting oneself that make progress, Δ P _gifor network load peak period one peak load regulation means G _imaximum adjustable the exerting oneself that make progress; δ P _gfor downward adjustable the exerting oneself of maximum of all peak load regulation means of network load low ebb phase, δ P _gifor network load low ebb phase one peak load regulation means G _idownward adjustable the exerting oneself of maximum;

Network load level comprises electrical network peak load P _ljmaxwith electrical network minimum load P _ljminbe respectively:

$P_{L\max }=\{P_{L1\max },...,P_{\mathrm{Lj}\max },...,P_{\mathrm{Lm}\max }\}=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }---\left(5\right)$

$P_{L\min }=\{P_{L1\min },...,P_{\mathrm{Lj}\min },...,P_{\mathrm{Lm}\min }\}=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }---\left(6\right)$

In formula, m is the sum of all provinces net in regional power grid; P _lmaxfor electrical network peak load; P _ljmaxfor economizing net j peak load in electrical network; P _lminfor electrical network minimum load, P _ljminfor economizing net j minimum load in electrical network.

Work as P _g< P _lmaxtime, need electrical network to carry out upper peak regulation;

Work as P _g> P _lmintime, need electrical network to carry out lower peak regulation.

The peak of step C, calculating sequence all peak load regulation means before nuclear power generating sets, concrete grammar comprises:

In C-1, consideration sequence X, each the peak load regulation means collating sequence X of sequence before nuclear power generating sets peak regulation means is:

X′＝{G ₁，…，G _k，…，G _h} (7)

In formula, G _kfor the peak load regulation means k of sequence before nuclear power generating sets peak regulation means in sequence X; H is all peak load regulation means sums of sequence before nuclear power generating sets peak regulation means;

C-2, when electrical network is carried out to upper peak regulation, the upper peak D of calculated permutations all peak load regulation means before nuclear power generating sets by the following method _u:

First, the maximum of all peak load regulation means of calculated permutations before the nuclear power generating sets adjustable Δ P that exerts oneself that makes progress _g' be:

${{\mathrm{\&Delta;P}}_G}^{\&prime;}=\{{\mathrm{\&Delta;P}}_{G1},...,{\mathrm{\&Delta;P}}_{\mathrm{Gk}},...,{\mathrm{\&Delta;P}}_{\mathrm{Gh}}\}=\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}---\left(8\right)$

Secondly, calculate the upper peak D of sequence all peak load regulation means before nuclear power generating sets _ufor:

D _U＝P′ _Gmax-P′ _Lmax (9)

In formula, P ' _gmaxfor the maximum output of all peak regulation means of system loading peak period sequence before nuclear power generating sets, P ' _lmaxfor system loading peak period, consider the peak load demand after standby, can be expressed as:

P _Gmax＝P _G+ΔP _G′ (10)

P′ _Lmax＝P _Lmax+αP _Lmax (11)

In formula, α is system loading peak period spinning reserve coefficient.

Composite type (2), (3), (5), (8), (9), (10), (11), can obtain D _ufor:

$D_U=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}-\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }---\left(12\right)$

In formula, α is network load peak period spinning reserve coefficient, Δ P _gkfor the maximum of the peak load regulation means k of sequence before nuclear power generating sets adjustable the exerting oneself that make progress;

C-3, when electrical network is carried out to lower peak regulation, the lower peak D of calculated permutations all peak load regulation means before nuclear power generating sets by the following method _l:

First, the downward adjustable δ P that exerts oneself of the maximum of all peak load regulation means of calculated permutations before nuclear power generating sets _g' be:

${{\mathrm{\&delta;P}}_G}^{\&prime;}=\{{\mathrm{\&delta;P}}_{G1},...,{\mathrm{\&delta;P}}_{\mathrm{Gk}},...,{\mathrm{\&delta;P}}_{\mathrm{Gh}}\}=\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}---\left(13\right)$

Secondly, the lower peak D of all peak load regulation means of calculated permutations before nuclear power generating sets _lfor:

D _L＝P′ _Lmin-P′ _Gmin (14)

In formula, P ' _gminfor the minimum load of all peak regulation means of system loading low ebb phase sequence before nuclear power generating sets, P ' _lminfor the end-of-term examination of system loading low ebb, consider the minimum load demand after standby, can be expressed as:

P′ _Gmin＝P _G-δP _G′ (15)

P′ _Lmin＝P _Lmin-βP _Lmin (16)

In formula, β is system loading low ebb phase spinning reserve coefficient.

Composite type (2), (4), (6), (13), (14), (15), (16), can obtain D _lfor:

$D_L=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}---\left(17\right)$

In formula, β is network load low ebb phase spinning reserve coefficient, δ P _gKdownward adjustable the exerting oneself of maximum for the peak load regulation means k of sequence before nuclear power generating sets.

Step D, judge that peak is whether sufficient, as abundance, do not need nuclear power generating sets to participate in peak load regulation network; As inadequate, need nuclear power generating sets participate in peak load regulation network and continue step e.Detailed process is:

D-1, when electrical network is carried out to upper peak regulation, if be arranged in the upper peak D of all peak load regulation means before nuclear power generating sets _u< 0, represents that on electrical network, peak is not enough, needs nuclear power generating sets to participate in peak regulation on electrical network, and nuclear power generating sets need to increase the operation of exerting oneself;

D-2, when electrical network is carried out to lower peak regulation, if be arranged in the lower peak D of all peak load regulation means before nuclear power generating sets _l< 0, represents that under electrical network, peak is not enough, needs nuclear power generating sets to participate in peak regulation under electrical network, and nuclear power generating sets need to reduce the operation of exerting oneself.

Step e, according to the vacancy of peak and nuclear power generating sets power, adjust constraints, definite kernel group of motors participates in the peak regulation degree of depth of peak load regulation network.Detailed process is:

E-1, when electrical network is carried out to upper peak regulation

First, if the upper peak of considering sequence all peak load regulation means before nuclear power generating sets whether not enough (being the vacancy of peak), nuclear power participates in, after the upper peaking operation of electrical network, should be able to meeting D ' _u>=0, that is:

D′ _U＝D _U+ΔP≥0 (18)

In formula, Δ P=μ γ ₁p _n, μ is regional power grid nuclear power generating sets number of units, γ ₁for the peak regulation degree of depth in the minimum of nuclear power generating sets participation electrical network, P _nfor nuclear power generating sets nominal operation power.:

${D^{\&prime;}}_U=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\max }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}-\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }+{\mathrm{\&mu;\&gamma;}}_1{P}_n\&GreaterEqual;0---\left(19\right)$

Can obtain thus, for meeting peak regulation demand on electrical network, nuclear power need to participate in peak regulation degree of depth γ in the minimum of peak load regulation network ₁should meet:

${\mathrm{\&gamma;}}_1\&GreaterEqual;\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }+\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\max }-\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}}{{\mathrm{\&mu;P}}_n}---\left(20\right)$

Secondly, consider the constraint that nuclear power generating sets self power is adjusted, the maximum operate power of general kernel group of motors is no more than its rated power, peak regulation degree of depth γ in the maximum of charged unit participation electrical network ₂should meet:

${\mathrm{\&gamma;}}_2\&le;\frac{P_n-P_0}{P_n}=\frac{P_n-{\mathrm{\&xi;P}}_n}{P_n}=1-\mathrm{\&xi;}---\left(21\right)$

In formula, P ₀for nuclear power generating sets operate power, P ₀=ξ P _n, ξ is the share that nuclear power generating sets operate power accounts for nominal operation power.

Finally, composite type (20) and (21), the degree of depth γ that can obtain peak regulation on nuclear power generating sets participation electrical network is:

$\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }+\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\max }-\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}}{{\mathrm{\&mu;P}}_n}\&le;\mathrm{\&gamma;}\&le;1-\mathrm{\&xi;}---\left(22\right)$

E-2, when electrical network is carried out to lower peak regulation

First, if consider the lower peak not enough (being the vacancy of peak) of sequence all peak load regulation means before nuclear power generating sets, nuclear power participates in, after the lower peaking operation of electrical network, should be able to meeting D ' _l>=0, that is:

D′ _L＝D _L+δP≥0 (23)

In formula, δ P=μ η ₁p _n, η ₁for the peak regulation degree of depth under the minimum of nuclear power generating sets participation electrical network:

${D^{\&prime;}}_L=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\min }+{\mathrm{\&mu;\&eta;}}_1{P}_n\&GreaterEqual;0---\left(24\right)$

Can obtain thus, for meeting peak regulation demand under electrical network, peak regulation degree of depth η under the minimum of nuclear power generating sets participation peak load regulation network ₁should meet:

${\mathrm{\&eta;}}_1\&GreaterEqual;\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\min }}{{\mathrm{\&mu;P}}_n}---\left(25\right)$

Secondly, consider the constraint that nuclear power generating sets self power is adjusted, general kernel group of motors has minimum operate power constraint, and therefore peak regulation degree of depth η under the maximum that nuclear power generating sets participate in electrical network is set ₂should meet:

${\mathrm{\&eta;}}_2\&le;\frac{P_0-P_{\min }}{P_n}=\frac{{\mathrm{\&xi;P}}_n-{\mathrm{\&tau;P}}_n}{P_n}=\mathrm{\&xi;}-\mathrm{\&tau;}---\left(26\right)$

In formula, P _minfor nuclear power generating sets are minimum, allow operate power, P _min=τ P, τ is the minimum shares that allow operate power to account for nominal operation power of nuclear power generating sets.

Finally, composite type (25) and (26), the degree of depth η that can obtain peak regulation under nuclear power generating sets participation electrical network is:

$\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\min }}{{\mathrm{\&mu;P}}_n}\&le;\mathrm{\&eta;}\&le;\mathrm{\&xi;}-\mathrm{\&tau;}---\left(27\right)$

Below by an example, further illustrate determination methods of the present invention:

The downward peak of all peak regulation means of regional power grid, comprise between hydroelectric peak, thermoelectricity degree of depth peak regulation, pumped storage peak regulation, nuclear power generating sets peak regulation and regional power grid and get in touch with section peak regulation, wherein nuclear power generating sets minimum load is single-machine capacity 50%, this regional power grid is totally 4 nuclear power generating sets that single-machine capacity is 1200MW, refers to following table 1:

The downward peak of all peak regulation means of table 1 regional power grid (unit: MW)

Nuclear power generating sets participate in peak load regulation network pattern and the degree of depth takes following steps to obtain:

In example, regional power grid nuclear power is generally with base load operation, and the present invention will be described therefore with peak regulation under consideration nuclear power participation electrical network, to operate to example.

The first step: according to different unit operation features, economy, reliability etc., determine that in conjunction with electrical network actual conditions different units or dissimilar peak regulation means participate in peak load regulation network sequence X.

Certain regional power grid peak regulation means mainly comprises between hydroelectric peak, thermoelectricity peak regulation, pumped storage peak regulation, nuclear power generating sets peak regulation and regional power grid gets in touch with section peak regulation, comprehensively can consider the requirements such as economy, security reliability, determines that peak regulation sequence is:

X={ hydroelectric peak, thermoelectricity peak regulation, pumped storage peak regulation, gets in touch with section peak regulation between regional power grid, nuclear power generating sets peak regulation }

Second step: extract electrical network feature, obtain different unit output situation P _gi, downward adjustable capacity δ P _gi, and the dissimilar or horizontal P of region minimum load _ljmin.

$P_G=\{P_{G1},...,P_{\mathrm{Gi}},...,P_{\mathrm{Gn}}\}=\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}=49000\mathrm{MW}$

${\mathrm{\&delta;P}}_G=\{{\mathrm{\&delta;P}}_{G1},...,{\mathrm{\&delta;P}}_{\mathrm{Gi}},...,{\mathrm{\&delta;P}}_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gi}}=18215\mathrm{MW}$

$P_{L\min }=\{P_{L1\min },...,P_{\mathrm{Lj}\min },...,P_{\mathrm{Lm}\min }\}=\underset{i=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }=34905\mathrm{MW}$

The 3rd step: calculate the lower peak D that comprises sequence all peak regulation means before nuclear power generating sets _l.

Consider that the peak load regulation network collating sequence of sequence before nuclear power peak regulation is:

X '={ pumped storage peak regulation, gets in touch with section peak regulation between regional power grid for hydroelectric peak, thermoelectricity peak regulation }

According to table 1, can calculate the dissimilar peak regulation means variable capacity of sequence before nuclear power generating sets:

${{\mathrm{\&delta;P}}_G}^{\&prime;}=\{{\mathrm{\&delta;P}}_{G1},...,{\mathrm{\&delta;P}}_{\mathrm{Gk}},...,{\mathrm{\&delta;P}}_{\mathrm{Gh}}\}=\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}=3204+8471+2450+1690=15815\mathrm{MW}$

The minimum load of all peak regulation means of system loading low ebb phase sequence before nuclear power generating sets:

P′ _Gmin＝P _G-δP _G′＝49000-15815＝33185MW

5% minimum load demand after standby is considered in the end-of-term examination of system loading low ebb, can be expressed as:

P′ _Lmin＝P _Lmin-βP _Lmin＝34905-5％×34905＝33159.75MW

Sequence lower peak of all peak regulation means before nuclear power generating sets is:

D _L＝P _Lmin-P _Gmin＝33159.75-33185＝-25.25MW

The 4th step: peak D under criterion system _lwhether sufficient, according to peak shaving capacity situation, judge whether nuclear power needs to participate in peak load regulation network.

D _l< 0, and under expression system, peak is not enough, needs nuclear power generating sets to participate in the lower peaking operation of electrical network, and nuclear power need to reduce the operation of exerting oneself.

The 5th step: adjust constraints according to exert oneself situation and power of nuclear power, determine that nuclear power participates in peak regulation degree of depth η under electrical network.

For meeting peak regulation demand under electrical network, the degree of depth that nuclear power need to participate in peak load regulation network is:

${\mathrm{\&eta;}}_1\&GreaterEqual;\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}}{{\mathrm{\&mu;P}}_n}=\frac{25.25}{4*1200}=0.526\%$

In addition, regional power grid nuclear power generating sets are generally with base load operation, i.e. P ₀=P _n:

${\mathrm{\&eta;}}_2\&le;\frac{P_0-P_{\min }}{P_n}=\frac{P_n-50\%\&CenterDot;P_n}{P_n}=50\%$

To sum up can obtain, the degree of depth that nuclear power generating sets participate in peak regulation under electrical network is:

0.526％≤η≤50％

Finally should be noted that: above embodiment is only in order to illustrate the application's technical scheme but not restriction to its protection range; although the application is had been described in detail with reference to above-described embodiment; those of ordinary skill in the field are to be understood that: those skilled in the art still can carry out all changes, revise or be equal to replacement to the embodiment of application after reading the application; these change, revise or be equal to replacement, within the claim scope that it all awaits the reply in its application.

Claims (7)

1. the nuclear power based on peak load regulation network capacitance balance participates in a peak load regulation network determination methods, it is characterized in that, described method comprises the steps:

A, by each peak load regulation means that determine to participate in peak load regulation network and the nuclear power generating sets peak regulation means following sequence X of formation that sorts:

X＝{G ₁，…，G _i，…，G _n}

In formula, G _ifor peak regulation means i; N is that regional power grid comprises that nuclear power generating sets are at the sum of interior all peak load regulation means.

The situation of the exerting oneself P of each unit in B, sequence of calculation X _gi, adjustable exerting oneself and network load level, the size of the situation of relatively exerting oneself and network load level, carries out upper peak regulation or lower peak regulation to judge to electrical network; All units adjustable exerted oneself and comprises the maximum adjustable Δ P that exerts oneself that makes progress _giwith the downward adjustable δ P that exerts oneself of maximum _gi, network load level comprises electrical network peak load P _ljmaxwith electrical network minimum load P _ljmin;

In C, sequence of calculation X, be arranged in the peak of the front all peak load regulation means of nuclear power generating sets;

D, judge that peak is whether sufficient, as abundance, do not need nuclear power generating sets to participate in peak load regulation network; As inadequate, need nuclear power generating sets participate in peak load regulation network and continue step e;

E, according to the vacancy of peak and nuclear power generating sets power, adjust constraints, definite kernel group of motors participates in the peak regulation degree of depth of peak load regulation network.

2. the nuclear power based on peak load regulation network capacitance balance as claimed in claim 1 participates in peak load regulation network determination methods, it is characterized in that, in described steps A, each peak load regulation means that determine to participate in peak load regulation network comprise gets in touch with any or all of in section peak regulation between Hydropower Unit peak regulation, fired power generating unit peak regulation, pumped storage peak load regulation, nuclear power generating sets peak regulation, coal-fired peak load regulation, combustion gas peak load regulation, fuel oil peak load regulation and regional power grid.

3. the nuclear power based on peak load regulation network capacitance balance as claimed in claim 1 participates in peak load regulation network determination methods, it is characterized in that, in described step B, in sequence X, the situation of exerting oneself of all units is:

$P_G=\{P_{G1},...,P_{\mathrm{Gi}},...,P_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}$

In formula, P _gfor the per day gross capability of plan of all peak load regulation means, P _gibe a peak load regulation means G _iper day the exerting oneself of plan;

The maximum of all units adjustable the exerting oneself and maximum adjustable exerting oneself downwards that make progress, is respectively:

${\mathrm{\&Delta;P}}_G=\{{\mathrm{\&Delta;P}}_{G1},...,{\mathrm{\&Delta;P}}_{\mathrm{Gi}},...,{\mathrm{\&Delta;P}}_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gi}}$

${\mathrm{\&delta;P}}_G=\{{\mathrm{\&delta;P}}_{G1},...,{\mathrm{\&delta;P}}_{\mathrm{Gi}},...,{\mathrm{\&delta;P}}_{\mathrm{Gn}}\}=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gi}}$

In formula, Δ P _gfor the maximum of all peak load regulation means in network load peak period adjustable the exerting oneself that make progress, Δ P _gifor network load peak period one peak load regulation means G _imaximum adjustable the exerting oneself that make progress; δ P _gfor downward adjustable the exerting oneself of maximum of all peak load regulation means of network load low ebb phase, δ P _gifor network load low ebb phase one peak load regulation means G _idownward adjustable the exerting oneself of maximum;

Described electrical network peak load and electrical network minimum load, be respectively:

$P_{L\max }=\{P_{L1\max },...,P_{\mathrm{Lj}\max },...,P_{\mathrm{Lm}\max }\}=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }$

$P_{L\min }=\{P_{L1\min },...,P_{\mathrm{Lj}\min },...,P_{\mathrm{Lm}\min }\}=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }$

In formula, m is the sum of all provinces net in regional power grid; P _lmaxfor electrical network peak load; P _ljmaxfor economizing net j peak load in electrical network; P _lminfor electrical network minimum load, P _ljminfor economizing net j minimum load in electrical network.

4. the nuclear power based on peak load regulation network capacitance balance as claimed in claim 1 participates in peak load regulation network determination methods, it is characterized in that, in described step B, the method that judgement is carried out upper peak regulation or lower peak regulation to electrical network comprises:

Work as P _g< P _lmaxtime, need electrical network to carry out upper peak regulation;

Work as P _g> P _lmintime, need electrical network to carry out lower peak regulation.

5. the nuclear power based on peak load regulation network capacitance balance as claimed in claim 1 participates in peak load regulation network determination methods, it is characterized in that, the method for described step C comprises:

In C-1, consideration sequence X, each the peak load regulation means collating sequence X ' of sequence before nuclear power generating sets peak regulation means is:

X′＝{G ₁，…，G _k，…，G _h}

In formula, G _kfor the peak load regulation means k of sequence before nuclear power generating sets peak regulation means in sequence X; H is all peak load regulation means sums of sequence before nuclear power generating sets peak regulation means;

C-2, when electrical network is carried out to upper peak regulation, the upper peak D of calculated permutations all peak load regulation means before nuclear power generating sets by the following method _u:

First, the maximum of all peak load regulation means of calculated permutations before nuclear power generating sets adjustable the exerting oneself that make progress:

${{\mathrm{\&Delta;P}}_G}^{\&prime;}=\{{\mathrm{\&Delta;P}}_{G1},...,{\mathrm{\&Delta;P}}_{\mathrm{Gk}},...,{\mathrm{\&Delta;P}}_{\mathrm{Gh}}\}=\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}$

Secondly, the upper peak D of all peak load regulation means of calculated permutations before nuclear power generating sets _ufor:

$D_U=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}-\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }$

In formula, α is network load peak period spinning reserve coefficient, Δ P _gkfor the maximum of the peak load regulation means k of sequence before nuclear power generating sets adjustable the exerting oneself that make progress;

C-3, when electrical network is carried out to lower peak regulation, the lower peak D of calculated permutations all peak load regulation means before nuclear power generating sets by the following method _l:

First, downward adjustable the exerting oneself of the maximum of all peak load regulation means of calculated permutations before nuclear power generating sets:

${{\mathrm{\&delta;P}}_G}^{\&prime;}=\{{\mathrm{\&delta;P}}_{G1},...,{\mathrm{\&delta;P}}_{\mathrm{Gk}},...,{\mathrm{\&delta;P}}_{\mathrm{Gh}}\}=\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}$

Secondly, the lower peak of all peak load regulation means of calculated permutations before nuclear power generating sets is:

$D_L=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}$

In formula, β is network load low ebb phase spinning reserve coefficient, δ P _gkdownward adjustable the exerting oneself of maximum for the peak load regulation means k of sequence before nuclear power generating sets.

6. the nuclear power based on peak load regulation network capacitance balance as claimed in claim 1 participates in peak load regulation network determination methods, it is characterized in that, in described step D, judges whether sufficient method is peak:

D-1, when electrical network is carried out to upper peak regulation, if be arranged in the upper peak D of all peak load regulation means before nuclear power generating sets _u< 0, represents that on electrical network, peak is not enough, needs nuclear power generating sets to participate in peak regulation on electrical network, and nuclear power generating sets need to increase the operation of exerting oneself;

D-2, when electrical network is carried out to lower peak regulation, if be arranged in the lower peak D of all peak load regulation means before nuclear power generating sets _l< 0, represents that under electrical network, peak is not enough, needs nuclear power generating sets to participate in peak regulation under electrical network, and nuclear power generating sets need to reduce the operation of exerting oneself.

7. the nuclear power based on peak load regulation network capacitance balance as claimed in claim 1 participates in peak load regulation network determination methods, it is characterized in that, in described step e, the peak regulation degree of depth method that definite kernel group of motors participates in peak load regulation network comprises:

E-1, when electrical network is carried out to upper peak regulation, first, consider the vacancy of peak, even D ' _u=D _u+ Δ P>=0;

In formula, D ' _ufor the upper peak of all peak load regulation means after nuclear power generating sets participation peak load regulation network, the vacancy that Δ P is peak, Δ P=μ γ ₁p _n, μ is regional power grid nuclear power generating sets number of units, P _nfor nuclear power generating sets nominal operation power, $D_U=\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}-\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max },$ Nuclear power generating sets participate in peak regulation degree of depth γ in the minimum of electrical network ₁for:

${\mathrm{\&gamma;}}_1\&GreaterEqual;\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }+\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}-\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}}{{\mathrm{\&mu;P}}_n}$

Secondly, consider nuclear power generating sets power adjustment constraints, the maximum operate power of nuclear power generating sets is no more than its rated power, peak regulation degree of depth γ in the maximum of nuclear power generating sets participation electrical network ₂for:

${\mathrm{\&gamma;}}_2\&le;\frac{P_n-P_0}{P_n}=\frac{P_n-{\mathrm{\&xi;P}}_n}{P_n}=1-\mathrm{\&xi;}$

In formula, P ₀for nuclear power generating sets operate power, P ₀=ξ P _n, ξ is the share that nuclear power generating sets operate power accounts for nominal operation power;

Finally, according to γ ₁and γ ₂the degree of depth γ that draws peak regulation on nuclear power generating sets participation electrical network is:

$\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }+\mathrm{\&alpha;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\max }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\max }-\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&Delta;P}}_{\mathrm{Gk}}}{{\mathrm{\&mu;P}}_n}\&le;\mathrm{\&gamma;}\&le;1-\mathrm{\&xi;}$

E-2, when electrical network is carried out to lower peak regulation, first, consider the vacancy of peak, even D ' _l=D _l+ δ P>=0;

In formula, D ' _lfor the lower peak of all peak load regulation means after nuclear power generating sets participation peak load regulation network, the vacancy that δ P is peak, $D_L=\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}},$ δ P=μ η ₁p _n, nuclear power generating sets participate in peak regulation degree of depth η under the minimum of electrical network ₁for:

${\mathrm{\&eta;}}_1\&GreaterEqual;\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}}}{{\mathrm{\&mu;P}}_n}$

Secondly, peak regulation degree of depth η under the maximum that nuclear power generating sets participate in electrical network is set ₂for:

${\mathrm{\&eta;}}_2\&le;\frac{P_0-P_{\min }}{P_n}=\frac{{\mathrm{\&xi;P}}_n-{\mathrm{\&tau;P}}_n}{P_n}=\mathrm{\&xi;}-\mathrm{\&tau;}$

In formula, P _minfor nuclear power generating sets are minimum, allow operate power, P _min=τ P, τ is the minimum shares that allow operate power to account for nominal operation power of nuclear power generating sets;

Finally, according to η ₁and η ₂the degree of depth η that draws peak regulation under nuclear power generating sets participation electrical network is::

$\frac{\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }+\underset{k=1}{\overset{h}{\mathrm{\&Sigma;}}}{\mathrm{\&delta;P}}_{\mathrm{Gk}}-\mathrm{\&beta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Lj}\min }-\underset{i=1}{\overset{n}{\mathrm{\&Sigma;}}}{P}_{\mathrm{Gi}\min }}{{\mathrm{\&mu;P}}_n}\&le;\mathrm{\&eta;}\&le;\mathrm{\&xi;}-\mathrm{\&tau;}.$

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