CN103259291B - Photovoltaic active control method of concentration output of large-scale wind power plants and photovoltaic power stations - Google Patents

Abstract

The invention discloses a photovoltaic active control method of concentration output of large-scale wind power plants and photovoltaic power stations, and belongs to the technical field of electric power systems and automation thereof. According to the photovoltaic active control method, an output plan of various photovoltaic power stations is calculated according to limitation, for the output section, of a current dispatching mode and an operation type of a power grid, and according to a current plan and real-time output of the wind power plants. The photovoltaic active control method can guarantee the fact that the power grid can stably and reliably operate in various operation types and various fault conditions, and meanwhile improves transmission ability of the power grid to the maximum. When wind power and photoelectric power share an output channel, by means of coordination control of output of the wind power plants and the photovoltaic power stations, wind sources and photoelectric sources are reasonably used, and the overall using rate of new energy resources is improved.

Description

A kind of large-scale wind power field photovoltaic plant is concentrated the photovoltaic real power control method of sending

Technical field

The invention belongs to control technique in power system field, more precisely, the present invention relates to a kind of large-scale wind power field and photovoltaic plant of being applicable to and concentrate and send the photovoltaic control method in real power control.

Background technology

Along with large-scale wind power is concentrated grid-connected, realized the real power control to wind-electricity integration.And photovoltaic generation scale is less at the beginning, in existing power grid control, consider not control photovoltaic.But along with the extensive development of photovoltaic generation, wind-powered electricity generation and photovoltaic generation meeting co-extrusion electrical network Transmission Corridor, there will be " traffic congestion " often.

Therefore, for rationally utilizing wind, light resources, improve the overall utilization rate of new forms of energy, improve the security and stability of electrical network.Need to jointly control scene, by exerting oneself according to the plan of exerting oneself of wind energy turbine set, control the meritorious of photovoltaic plant.

Summary of the invention

The object of the invention is: for the deficiency of the wind-powered electricity generation existing in prior art and photovoltaic generation meeting co-extrusion electrical network Transmission Corridor, provide a kind of large-scale wind power field photovoltaic plant to concentrate the photovoltaic real power control method of sending, thereby realize according to electrical network current scheduling pattern, operational mode sending limit and the wind energy turbine set current planning of section and exerting oneself in real time to calculate the plan of exerting oneself that issues photovoltaic plant.

Specifically, the present invention adopts following technical scheme to realize, and comprises the following steps:

1) calculate the plan of initially exerting oneself of each photovoltaic plant, and issue the plan of exerting oneself to each photovoltaic plant and wind energy turbine set;

2) will concentrate all wind energy turbine set of grid-connected public same Transmission Corridor and photovoltaic plant as an overall region, then be divided into a plurality of subregions according to the online of wind energy turbine set, the photovoltaic plant overall region of naming a person for a particular job;

3) the wind-powered electricity generation situation of exerting oneself in judgement overall region, then judge each subregion wind-powered electricity generation situation of exerting oneself, each photovoltaic plant is controlled to calculating, obtain the plan of newly exerting oneself of each photovoltaic plant;

4) Centre De Controle Mixte station is issued to each photovoltaic plant by the plan of newly exerting oneself of each photovoltaic plant;

5) carry out the calculating of next computing cycle, repeating step 2) to 4).

Of the present invention being further characterized in that: described step 1), the plan of initially exerting oneself of each photovoltaic plant is:

P _{A_PV_initPlan}＝P _{A_PV_ZJ}-P _{A_PV_JX}

In formula, P _{a_PV_initPlan}represent the plan of initially exerting oneself of each photovoltaic plant, P _{a_PV_ZJ}represent the installed capacity of each photovoltaic plant, P _{a_PV_JX}represent the maintenance capacity of each photovoltaic plant.

Of the present invention being further characterized in that: described step 3), the computational methods of the plan of newly exerting oneself of each photovoltaic plant are as follows:

3-1) first whether limited according to the whole wind-powered electricity generation of following condition judgment, when condition 1., 2., while 3. meeting, think that whole wind-powered electricity generation is limited simultaneously; Otherwise, think that whole wind-powered electricity generation is not limited:

1. the P of certain wind energy turbine set _{w_Cur}+ Δ P _set> P _{w_Plan}

2. the wind energy turbine set number satisfying condition is 1. more than or equal to NUM _{w_All_min}

③(P _{LF_max}-P _{LF_cur})＜P _{LF_Limit}

P wherein _{w_Cur}for the current of this wind energy turbine set exerted oneself, Δ P _setfor the meritorious deviation definite value of exerting oneself of this wind energy turbine set, P _{w_Plan}for the current planning of this wind energy turbine set, NUM _{w_All_min}for meeting the limited wind energy turbine set minimum number definite value of whole wind-powered electricity generation, P _{lF_max}for the maximum of honourable Transmission Corridor in overall region is sent limit definite value, P _{lF_cur}for the current of honourable Transmission Corridor in overall region gained merit, P _{lF_Limit}for the not limited Transmission Corridor nargin of whole wind-powered electricity generation minimum value definite value;

Whether limited according to wind-powered electricity generation in each subregion of following condition judgment again, when condition 4., 5., while 6. meeting, think that wind-powered electricity generation is limited in this subregion simultaneously; Otherwise, think that the interior wind-powered electricity generation of this subregion is not limited:

4. the P of certain wind energy turbine set in this subregion _{w_Area_Cur}+ Δ P _set> P _{w_Area_Plan}

5. the wind energy turbine set number satisfying condition in this subregion is 4. more than or equal to NUM _{w_Area_min}

⑥(P _{LF_area_max}-P _{LF_area_cur})＜P _{LF_area_Limit}

P wherein _{wArea_Cur}for the current of this wind energy turbine set exerted oneself, Δ P _setthe meritorious deviation definite value of exerting oneself of this wind energy turbine set, P _{w_Area_Plan}for the current planning of this wind energy turbine set, NUM _{w_Area_min}for meeting the limited wind energy turbine set minimum number definite value of this subregion wind-powered electricity generation, P _{lF_area_max}for the maximum of this subregion scene Transmission Corridor is sent limit definite value, P _{lF_area_cur}for current the gaining merit of this subregion scene Transmission Corridor, P _{lF_area_Limit}for the not limited Transmission Corridor nargin of this subregion wind-powered electricity generation minimum value definite value;

If 3-2) according to above judgement, show that in the limited and all subregions of whole wind-powered electricity generation, wind-powered electricity generation is not subject to, to enter step 3-3 in limited time);

If according to above judgement, show that the limited while of whole wind-powered electricity generation also exists wind-powered electricity generation in subregion to be subject to, to enter step 3-4 in limited time);

If according to above judgement, show that in the limited and not all subregions of whole wind-powered electricity generation, wind-powered electricity generation is not subject in limited time yet,, enter step 3-5);

If according to above judgement, show that whole wind-powered electricity generation is not limited but exist wind-powered electricity generation in subregion to be subject to, to enter step 3-6 in limited time);

3-3) first count the photovoltaic plant number Num that meets the condition of subduing in overall region: if current the exerting oneself of certain photovoltaic plant is greater than the minimum planned limit definite value of this photovoltaic plant in overall region, this photovoltaic plant is the photovoltaic plant that meets the condition of subduing in overall region;

Then, calculate the total amount of the subduing P of photovoltaic plant that meets the condition of subduing in overall region _reduce:

$P_{\mathrm{Reduce}}=\mathrm{Min}\left(P_{\mathrm{Reduce}\_\max \_\mathrm{set},}\underset{i=1}{\overset{\mathrm{Num}}{\mathrm{\Σ}}}(P_{{\mathrm{PV}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\min }_i})\right)$

In formula, P _{reduce_max_set}for single in overall region is subdued maximum total amount definite value, for meeting the current of i photovoltaic plant of the condition of subduing in overall region, exert oneself, for meeting the minimum planned limit definite value of i photovoltaic plant of the condition of subduing in overall region;

Then, calculate the plan of newly exerting oneself that meets each photovoltaic plant of the condition of subduing in overall region:

$P_{A\_\mathrm{NewPlan}}=P_{\mathrm{PV}\_A\_\mathrm{Cur}}-P_{\mathrm{Reduce}}*((P_{\mathrm{PV}\_A\_\mathrm{Cur}}-P_{\mathrm{PV}\_A\_\min })/\underset{i=1}{\overset{\mathrm{Num}}{\mathrm{\Σ}}}(P_{{\mathrm{PV}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\min }_i}))$

In formula, P _{a_NewPlan}represent the plan of newly exerting oneself separately of each photovoltaic plant that meets the condition of subduing in overall region, P _{pV_A_Cur}represent current the exerting oneself separately of each photovoltaic plant that meets the condition of subduing in overall region, P _{pV_A_min}represent and meet each photovoltaic plant of subduing under condition minimum planned limit definite value separately in overall region;

Finally, calculate the plan of newly exerting oneself that does not meet each photovoltaic plant of the condition of subduing in overall region:

P _{B_NewPlan}＝P _{B_Cur_Plan}

In formula, P _{b_NewPlan}represent in overall region the plan of newly exerting oneself separately of each photovoltaic plant that does not meet the condition of subduing, P _{b_Cur_Plan}represent in overall region the current planning separately of each photovoltaic plant that does not meet the condition of subduing;

When 3-4) if current control type is whole control, according to step 3-3) the method plan of newly exerting oneself of calculating each photovoltaic plant;

If current control type is subregion while controlling, according to the plan of newly exerting oneself of following each photovoltaic plant of process computation:

First, count the photovoltaic plant number Num_area that meets the condition of subduing in the limited subregion of each wind-powered electricity generation: if current the exerting oneself of certain photovoltaic plant is greater than the minimum planned limit definite value of this photovoltaic plant in the limited subregion of certain wind-powered electricity generation, this photovoltaic plant is the photovoltaic plant that meets the condition of subduing in the limited subregion of this wind-powered electricity generation;

Then, calculate the satisfied total amount of subduing of photovoltaic plant of subduing condition of the limited subregion of each wind-powered electricity generation:

$P_{\mathrm{Reduce}\_\mathrm{Area}}=\mathrm{Min}(P_{\mathrm{Reduce}\_\max \_\mathrm{area}\_\mathrm{set}},\underset{i=1}{\overset{\mathrm{Num}\_\mathrm{area}}{\mathrm{\Σ}}}(P_{{\mathrm{PV}\_\mathrm{area}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\mathrm{area}\_\min }_i}))$

In formula, P _{reduce_Area}represent the limited subregion of each wind-powered electricity generation satisfied total amount of subduing of photovoltaic plant of subduing condition separately, P _{reduce_max_area_set}represent that the limited subregion of each wind-powered electricity generation single separately subdues maximum total amount definite value, represent that in the limited subregion of each wind-powered electricity generation, satisfied the current of i photovoltaic plant of subduing condition exerted oneself, represent the minimum planned limit that meets i photovoltaic plant of the condition of subduing in the limited subregion of each wind-powered electricity generation;

Then, calculating the satisfied photovoltaic plant of subduing condition in the limited subregion of each wind-powered electricity generation newly plans:

$P_{A\_\mathrm{Area}\_\mathrm{NewPlan}}=P_{\mathrm{PV}\_A\_\mathrm{Area}\_\mathrm{Cur}}-P_{\mathrm{Reduce}\_\mathrm{Area}}*\left(\frac{P_{\mathrm{PV}\_A\_\mathrm{Area}\_\mathrm{Cur}}-P_{\mathrm{PV}\_A\_\mathrm{Area}\_\min }}{{\mathrm{\Σ}}_{i=1}^{\mathrm{Num}\_\mathrm{area}}(P_{{\mathrm{PV}\_\mathrm{area}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\mathrm{area}\_\min }_i})}\right)$

In formula, P _{a_Area_NewPlan}represent the plan of newly exerting oneself separately of each photovoltaic plant that meets the condition of subduing in the limited subregion of each wind-powered electricity generation, P _{pV_A_Area_Cur}represent current the exerting oneself separately of each photovoltaic plant that meets the condition of subduing in the limited subregion of each wind-powered electricity generation, P _{pV_A_Area_min}represent the minimum planned limit definite value separately of each photovoltaic plant that meets the condition of subduing in the limited subregion of each wind-powered electricity generation;

Then, calculate the new plan that does not meet the photovoltaic plant of the condition of subduing in the limited subregion of each wind-powered electricity generation:

P _{B_Area_NewPlan}＝P _{B_Area_Cur_Plan}

In formula, P _{b_Area_NewPlan}represent in the limited subregion of each wind-powered electricity generation the plan of newly exerting oneself separately of each photovoltaic plant that does not meet the condition of subduing, P _{b_Area_Cur_Plan}represent in the limited subregion of each wind-powered electricity generation the current planning separately of each photovoltaic plant that does not meet the condition of subduing;

Finally, calculate the new plan of each photovoltaic plant in the not limited subregion of each wind-powered electricity generation:

P _{C_NewPlan}＝P _{C_Cur_Plan}

P in formula _{c_NewPlan}represent each photovoltaic plant plan of newly exerting oneself separately in the not limited subregion of each wind-powered electricity generation, P _{c_Cur_Plan}represent each photovoltaic plant current planning separately in the not limited subregion of each wind-powered electricity generation;

3-5) current planning in overall region is less than to the photovoltaic plant of working capacity, by its working capacity ratio, promotes, calculate the plan of newly exerting oneself of the photovoltaic plant that each current planning is less than working capacity:

$P_{D\_\mathrm{NewPlan}}=\min (P_{D\_\mathrm{Cur}\_\mathrm{Plan}}+\frac{P_{\mathrm{Set}\_\mathrm{Area}\_\mathrm{Add}}*(P_{D\_\mathrm{PV}\_\mathrm{Run}}-P_{D\_\mathrm{Cur}\_\mathrm{Plan}})}{{\mathrm{\Σ}}_{i=1}^n(P_{i\_\mathrm{PV}\_\mathrm{Run}}-P_{i\_\mathrm{Cur}\_\mathrm{Plan}})},P_{D\_\mathrm{PV}\_\mathrm{Run}})$

In formula, P _{d_NewPlan}represent the plan of newly exerting oneself separately of photovoltaic plant that each current planning in overall region is less than working capacity, P _{d_Cur_Plan}represent the current planning separately of photovoltaic plant that each current planning in overall region is less than working capacity, P _{set_Area_Add}represent that each current planning is less than the single lift total amount definite value of the photovoltaic plant place subregion of working capacity, P _{d_PV_Run}represent photovoltaic plant that each current planning in overall region is less than working capacity working capacity separately, n is the total number of photovoltaic plant that in overall region, current planning is less than working capacity, P _{i_PV_Run}represent that interior i the current planning of overall region is less than the working capacity of the photovoltaic plant of working capacity, P _{i_Cur_Plan}represent that interior i the current planning of overall region is less than the current planning of the photovoltaic plant of working capacity;

Current planning in overall region is not less than to the photovoltaic plant of working capacity, it is constant that its plan of newly exerting oneself maintains its current planning;

3-6) for the limited subregion of each wind-powered electricity generation, according to step 3-4) in current control type be the plan of newly exerting oneself that the computational methods of subregion while controlling are calculated each photovoltaic plant;

For the not limited subregion of each wind-powered electricity generation, the photovoltaic plant to wherein current planning is less than working capacity, calculates its plan of newly exerting oneself as follows:

$P_{E\_\mathrm{NewPlan}}=\min (P_{E\_\mathrm{Cur}\_\mathrm{Plan}}+\frac{P_{\mathrm{Set}\_\mathrm{Area}\_\mathrm{Add}}*(P_{E\_\mathrm{PV}\_\mathrm{Run}}-P_{E\_\mathrm{Cur}\_\mathrm{Plan}})}{{\mathrm{\Σ}}_{i=1}^m(P_{i\_\mathrm{Area}\_\mathrm{PV}\_\mathrm{Run}}-P_{i\_\mathrm{Area}\_\mathrm{Cur}\_\mathrm{Plan}})},P_{E\_\mathrm{PV}\_\mathrm{Run}})$

In formula, P _{e_NewPlan}represent the plan of newly exerting oneself separately of photovoltaic plant that each current planning in the not limited subregion of each wind-powered electricity generation is less than working capacity, P _{e_Cur_Plan}represent the current planning separately of photovoltaic plant that each current planning in the not limited subregion of each wind-powered electricity generation is less than working capacity, P _{e_PV_Run}represent photovoltaic plant that each current planning in the not limited subregion of each wind-powered electricity generation is less than working capacity working capacity separately, m represents in the not limited subregion of each wind-powered electricity generation that current planning is separately less than the total number of photovoltaic plant of working capacity, P _{i_Area_PV_Run}represent that interior i the current planning of the not limited subregion of each wind-powered electricity generation is less than the working capacity of the photovoltaic plant of working capacity, P _{i_Area_Cur_Plan}represent that interior i the current planning of the not limited subregion of each wind-powered electricity generation is less than the current planning of the photovoltaic plant of working capacity;

For the not limited subregion of each wind-powered electricity generation, current planning is wherein not less than to the photovoltaic plant of working capacity, it is constant that its plan of newly exerting oneself maintains its current planning.

Beneficial effect of the present invention is as follows: the present invention according to electrical network current scheduling pattern, operational mode to sending limit and the wind energy turbine set current planning of section and exerting oneself in real time to calculate the plan of exerting oneself that issues each photovoltaic plant, guarantee electrical network reliable and stable operation under various operational modes and failure condition, improved to greatest extent the conveying capacity of electrical network simultaneously, when wind-powered electricity generation, photoelectricity co-extrusion Transmission Corridor, by coordination, control exerting oneself of wind energy turbine set, photovoltaic plant, rationally utilize wind, light resources, improve the overall utilization rate of new forms of energy.

Accompanying drawing explanation

Fig. 1 is the flow chart of the inventive method.

Embodiment

With reference to the accompanying drawings and in conjunction with example the present invention is described in further detail.

As shown in Figure 1, method of the present invention, comprises the following steps:

While A. starting to calculate for the first time, calculate the original plan of photovoltaic plant, and the plan that issues is to each photovoltaic plant and wind energy turbine set.

B. will concentrate all wind energy turbine set of grid-connected public same Transmission Corridor and photovoltaic plant as an overall region, then be divided into a plurality of subregions according to the online of wind energy turbine set, the photovoltaic plant overall region of naming a person for a particular job.

C. the wind-powered electricity generation situation of exerting oneself in per fixed cycle judgement overall region, then judge each subregion wind-powered electricity generation situation of exerting oneself, photovoltaic plant is controlled to calculating, obtain the new plan of exerting oneself of next computing cycle of each photovoltaic plant;

D. Centre De Controle Mixte station is issued to each photovoltaic plant by the new plan of photovoltaic plant.

E. next computing cycle, repeating step B-D.

In above-mentioned steps A, the original plan of certain the photovoltaic plant A in combined control system is:

P _{A_PV_initPlan}＝P _{A_PV_ZJ}-P _{A_PV_JX}

In formula, P _{a_PV_initPlan}for the original plan of photovoltaic plant A, P _{a_PV_ZJ}for the installed capacity of photovoltaic plant A, P _{a_PV_JX}maintenance capacity for photovoltaic plant A.

In above-mentioned steps C, calculate each photovoltaic plant Active Generation plan concrete grammar as follows:

C.1 judge the condition that whole wind-powered electricity generation is limited:

1. the P of certain wind energy turbine set _{w_Cur}+ Δ P _set> P _{w_Plan};

2. the wind energy turbine set number satisfying condition is 1. more than or equal to NUM _{w_All_min};

③(P _{LF_max}-P _{LF_cur})＜P _{LF_Limit}；

1., 2. and 3. condition needs to meet simultaneously, wherein: P _{w_Cur}for the current of wind energy turbine set exerted oneself; Δ P _setit is the meritorious deviation definite value of exerting oneself of wind energy turbine set; P _{w_Plan}for the current planning of wind energy turbine set, NUM _{w_All_min}for meeting the limited wind energy turbine set minimum number definite value of whole wind-powered electricity generation; P _{lF_max}for the maximum of honourable Transmission Corridor in overall region is sent limit definite value; P _{lF_cur}for the current of honourable Transmission Corridor in overall region gained merit; P _{lF_Limit}for the not limited Transmission Corridor nargin of whole wind-powered electricity generation minimum value definite value.

C.2 judge the limited condition of wind-powered electricity generation in subregion:

1. the P of certain wind energy turbine set in this subregion _{w_Area_Cur}+ Δ P _set> P _{w_Area_Plan};

2. the wind energy turbine set number satisfying condition in this subregion is 1. more than or equal to NUM _{w_Area_min};

③(P _{LF_area_max}-P _{LF_area_cur})＜P _{LF_area_Limit}；

1., 2. and 3. condition needs to meet simultaneously, wherein: P _{w_Area_Cur}for the current of wind energy turbine set in this subregion exerted oneself; Δ P _setit is the meritorious deviation definite value of exerting oneself of wind energy turbine set; P _{w_Area_Plan}current planning for wind energy turbine set in this subregion; NUM _{w_Area_min}for meeting the limited wind energy turbine set minimum number definite value of this subregion wind-powered electricity generation; P _{lF_area_max}for the maximum of subregion scene Transmission Corridor is sent limit definite value; P _{lF_area_cur}current gaining merit for subregion scene Transmission Corridor; P _{lF_area_Limit}for the not limited Transmission Corridor nargin of subregion wind-powered electricity generation minimum value definite value.

C.3 according to condition judgment C.1 and C.2, go out whole wind-powered electricity generation limited, all subregion wind-powered electricity generations are not subject in limited time, to meeting the photovoltaic plant of the condition of subduing in overall region, subdue, and calculation process is as follows:

Calculate the photovoltaic plant number Num that meets the condition of subduing: current the exerting oneself of photovoltaic plant is greater than the minimum planned limit definite value of photovoltaic plant, and this photovoltaic plant P is the photovoltaic plant that meets the condition of subduing.

Calculate the total amount of the subduing P of photovoltaic plant that meets the condition of subduing _reduce:

$P_{\mathrm{Reduce}}=\mathrm{Min}\left(P_{\mathrm{Reduce}\_\max \_\mathrm{set},}\underset{i=1}{\overset{\mathrm{Num}}{\mathrm{\Σ}}}(P_{{\mathrm{PV}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\min }_i})\right)$

In formula, P _{reduce_max_set}for whole single is subdued maximum total amount definite value, for meeting current the exerting oneself of photovoltaic plant i of the condition of subduing, for the minimum planned limit definite value of photovoltaic plant i.

Calculate and meet the new plan (photovoltaic plant A is example) of subduing each photovoltaic plant under condition:

$P_{A\_\mathrm{NewPlan}}=P_{\mathrm{PV}\_A\_\mathrm{Cur}}-P_{\mathrm{Reduce}}*((P_{\mathrm{PV}\_A\_\mathrm{Cur}}-P_{\mathrm{PV}\_A\_\min })/\underset{i=1}{\overset{\mathrm{Num}}{\mathrm{\Σ}}}(P_{{\mathrm{PV}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\min }_i}))$

In formula, P _{a_NewPlan}for photovoltaic plant, A newly plans, P _{pV_A_Cur}for photovoltaic plant A is current, exert oneself, P _{pV_A_min}for the minimum planned limit definite value of photovoltaic plant A.

Calculate the satisfied photovoltaic plant of subduing condition of overall region and newly plan (take photovoltaic plant B as example):

P _{B_NewPlan}＝P _{B_Cur_Plan}

In formula, P _{b_NewPlan}for photovoltaic plant, B newly plans, P _{b_Cur_Plan}for photovoltaic plant B current planning.

C.4 according to condition judgment C.1 and C.2, go out whole wind-powered electricity generation limited, also exist subregion wind-powered electricity generation to be subject in limited time, calculation procedure is as follows:

Read and control type definite value SET _{ctr_type}, according to definite value judgement control method;

SET _{ctr_type}value be method one (whole control), each photovoltaic plant is exerted oneself plan calculation procedure referring to C.3.

SET _{ctr_type}value be method two (subregion control), each photovoltaic plant plan calculation process of exerting oneself is in the limited subregion of wind-powered electricity generation:

Add up the photovoltaic plant number Num_area that meets the condition of subduing in the limited subregion of each wind-powered electricity generation: in subregion, the current of certain photovoltaic plant exerted oneself in the minimum planned limit definite value of photovoltaic plant, and this photovoltaic plant is the photovoltaic plant that meets the condition of subduing.

Calculate the total amount of subduing of photovoltaic plant that the limited subregion of each wind-powered electricity generation meets the condition of subduing:

$P_{\mathrm{Reduce}\_\mathrm{Area}}=\mathrm{Min}(P_{\mathrm{Reduce}\_\max \_\mathrm{area}\_\mathrm{set}},\underset{i=1}{\overset{\mathrm{Num}\_\mathrm{area}}{\mathrm{\Σ}}}(P_{{\mathrm{PV}\_\mathrm{area}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\mathrm{area}\_\min }_i}))$

In formula, P _{reduce_max_area_set}for the limited subregion of each wind-powered electricity generation single is separately subdued maximum total amount definite value, represent that in the limited subregion of each wind-powered electricity generation, satisfied the current of i photovoltaic plant of subduing condition exerted oneself, represent the minimum planned limit that meets i photovoltaic plant of the condition of subduing in the limited subregion of each wind-powered electricity generation.

Calculating the satisfied photovoltaic plant of subduing condition in the limited subregion of wind-powered electricity generation newly plans:

$P_{A\_\mathrm{Area}\_\mathrm{NewPlan}}=P_{\mathrm{PV}\_A\_\mathrm{Area}\_\mathrm{Cur}}-P_{\mathrm{Reduce}\_\mathrm{Area}}*\left(\frac{P_{\mathrm{PV}\_A\_\mathrm{Area}\_\mathrm{Cur}}-P_{\mathrm{PV}\_A\_\mathrm{Area}\_\min }}{{\mathrm{\Σ}}_{i=1}^{\mathrm{Num}\_\mathrm{area}}(P_{{\mathrm{PV}\_\mathrm{area}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\mathrm{area}\_\min }_i})}\right)$

In formula, P _{a_Area_NewPlan}represent the plan of newly exerting oneself separately of each photovoltaic plant that meets the condition of subduing in the limited subregion of each wind-powered electricity generation, P _{pV_A_Area_Cur}represent current the exerting oneself separately of each photovoltaic plant that meets the condition of subduing in the limited subregion of each wind-powered electricity generation, P _{pV_A_Area_min}represent the minimum planned limit definite value separately of each photovoltaic plant that meets the condition of subduing in the limited subregion of each wind-powered electricity generation;

Then, calculate the new plan that does not meet the photovoltaic plant of the condition of subduing in the limited subregion of each wind-powered electricity generation:

P _{B_Area_NewPlan}＝P _{B_Area_Cur_Plan}

In formula, P _{b_Area_NewPlan}represent in the limited subregion of each wind-powered electricity generation the plan of newly exerting oneself separately of each photovoltaic plant that does not meet the condition of subduing, P _{b_Area_Cur_Plan}represent in the limited subregion of each wind-powered electricity generation the current planning separately of each photovoltaic plant that does not meet the condition of subduing.

SET _{ctr_type}value be method two (subregion control), calculate the new plan of each photovoltaic plant in the not limited subregion of each wind-powered electricity generation:

P _{C_NewPlan}＝P _{C_Cur_Plan}

P in formula _{c_NewPlan}represent each photovoltaic plant plan of newly exerting oneself separately in the not limited subregion of each wind-powered electricity generation, P _{c_Cur_Plan}represent each photovoltaic plant current planning separately in the not limited subregion of each wind-powered electricity generation;

C.5 according to condition judgment C.1 and C.2, go out whole wind-powered electricity generation not limited, all subregion wind-powered electricity generations are not limited yet, current planning in overall region is less than to the photovoltaic plant of working capacity, by its working capacity ratio, promote, calculate the plan of newly exerting oneself of the photovoltaic plant that each current planning is less than working capacity:

$P_{D\_\mathrm{NewPlan}}=\min (P_{D\_\mathrm{Cur}\_\mathrm{Plan}}+\frac{P_{\mathrm{Set}\_\mathrm{Area}\_\mathrm{Add}}*(P_{D\_\mathrm{PV}\_\mathrm{Run}}-P_{D\_\mathrm{Cur}\_\mathrm{Plan}})}{{\mathrm{\Σ}}_{i=1}^n(P_{i\_\mathrm{PV}\_\mathrm{Run}}-P_{i\_\mathrm{Cur}\_\mathrm{Plan}})},P_{D\_\mathrm{PV}\_\mathrm{Run}})$

In formula, P _{d_NewPlan}represent the plan of newly exerting oneself separately of photovoltaic plant that each current planning in overall region is less than working capacity, P _{d_Cur_Plan}represent the current planning separately of photovoltaic plant that each current planning in overall region is less than working capacity, P _{set_Area_Add}represent that each current planning is less than the single lift total amount definite value of the photovoltaic plant place subregion of working capacity, P _{d_PV_Run}represent photovoltaic plant that each current planning in overall region is less than working capacity working capacity separately, n is the total number of photovoltaic plant that in overall region, current planning is less than working capacity, P _{i_PV_Run}represent that interior i the current planning of overall region is less than the working capacity of the photovoltaic plant of working capacity, P _{i_Cur_Plan}represent that interior i the current planning of overall region is less than the current planning of the photovoltaic plant of working capacity.

P wherein _{d_PV_Run}=P _{d_PV_ZJ}-P _{d_PV_JX}, P _{d_PV_ZJ}the photovoltaic plant that is less than working capacity for each current planning in overall region installed capacity separately, P _{d_PV_JX}the photovoltaic plant that is less than working capacity for each current planning in overall region maintenance capacity separately.

Current planning in overall region is not less than to the photovoltaic plant of working capacity, it is constant that its plan of newly exerting oneself maintains its current planning.

C.6 according to condition judgment C.1 and C.2, go out whole wind-powered electricity generation not limited, exist subregion wind-powered electricity generation limited, each photovoltaic plant plan computational methods of exerting oneself are as follows:

In the limited subregion of wind-powered electricity generation, the new plan calculation procedure of photovoltaic plant is as 3 in C.4) sub-step.

For the not limited subregion of each wind-powered electricity generation, the photovoltaic plant to wherein current planning is less than working capacity, calculates its plan of newly exerting oneself as follows:

$P_{E\_\mathrm{NewPlan}}=\min (P_{E\_\mathrm{Cur}\_\mathrm{Plan}}+\frac{P_{\mathrm{Set}\_\mathrm{Area}\_\mathrm{Add}}*(P_{E\_\mathrm{PV}\_\mathrm{Run}}-P_{E\_\mathrm{Cur}\_\mathrm{Plan}})}{{\mathrm{\Σ}}_{i=1}^m(P_{i\_\mathrm{Area}\_\mathrm{PV}\_\mathrm{Run}}-P_{i\_\mathrm{Area}\_\mathrm{Cur}\_\mathrm{Plan}})},P_{E\_\mathrm{PV}\_\mathrm{Run}})$

In formula, P _{e_NewPlan}represent the plan of newly exerting oneself separately of photovoltaic plant that each current planning in the not limited subregion of each wind-powered electricity generation is less than working capacity, P _{e_Cur_Plan}represent the current planning separately of photovoltaic plant that each current planning in the not limited subregion of each wind-powered electricity generation is less than working capacity, P _{e_PV_Run}represent photovoltaic plant that each current planning in the not limited subregion of each wind-powered electricity generation is less than working capacity working capacity separately, m represents in the not limited subregion of each wind-powered electricity generation that current planning is separately less than the total number of photovoltaic plant of working capacity, P _{i_Area_PV_Run}represent that interior i the current planning of the not limited subregion of each wind-powered electricity generation is less than the working capacity of the photovoltaic plant of working capacity, P _{i_Area_Cur_Plan}represent that interior i the current planning of the not limited subregion of each wind-powered electricity generation is less than the current planning of the photovoltaic plant of working capacity;

For the not limited subregion of each wind-powered electricity generation, current planning is wherein not less than to the photovoltaic plant of working capacity, it is constant that its plan of newly exerting oneself maintains its current planning.

Although the present invention with preferred embodiment openly as above, embodiment is not of the present invention for limiting.Without departing from the spirit and scope of the invention, any equivalence of doing changes or retouching, belongs to equally the present invention's protection range.Therefore should to take the application's the content that claim was defined be standard to protection scope of the present invention.

Claims (1)

1. large-scale wind power field photovoltaic plant is concentrated a photovoltaic real power control method of sending, and it is characterized in that, comprises the steps:

1) calculate the plan of initially exerting oneself of each photovoltaic plant, and issue the plan of exerting oneself to each photovoltaic plant and wind energy turbine set;

2) will concentrate all wind energy turbine set of grid-connected public same Transmission Corridor and photovoltaic plant as an overall region, then be divided into a plurality of subregions according to the online of wind energy turbine set, the photovoltaic plant overall region of naming a person for a particular job;

3) the wind-powered electricity generation situation of exerting oneself in judgement overall region, then judge each subregion wind-powered electricity generation situation of exerting oneself, each photovoltaic plant is controlled to calculating, obtain the plan of newly exerting oneself of each photovoltaic plant;

4) Centre De Controle Mixte station is issued to each photovoltaic plant by the plan of newly exerting oneself of each photovoltaic plant;

5) carry out the calculating of next computing cycle, repeating step 2) to 4);

Wherein, described step 1) in, the plan of initially exerting oneself of each photovoltaic plant is:

P _{A_PV_initPlan}＝P _{A_PV_ZJ}-P _{A_PV_JX}

In formula, P _{a_PV_initPlan}represent the plan of initially exerting oneself of each photovoltaic plant, P _{a_PV_ZJ}represent the installed capacity of each photovoltaic plant, P _{a_PV_JX}represent the maintenance capacity of each photovoltaic plant;

Described step 3) in, the computational methods of the plan of newly exerting oneself of each photovoltaic plant are as follows:

3-1) first whether limited according to the whole wind-powered electricity generation of following condition judgment, when condition 1., 2., while 3. meeting, think that whole wind-powered electricity generation is limited simultaneously; Otherwise, think that whole wind-powered electricity generation is not limited:

1. the P of certain wind energy turbine set _{w_Cur}+ Δ P _set> P _{w_Plan}

2. the wind energy turbine set number satisfying condition is 1. more than or equal to NUM _{w_All_min}

③(P _{LF_max}-P _{LF_cur})＜P _{LF_Limit}

P wherein _{w_Cur}for the current of this wind energy turbine set exerted oneself, Δ P _setfor the meritorious deviation definite value of exerting oneself of this wind energy turbine set, P _{w_Plan}for the current planning of this wind energy turbine set, NUM _{w_All_min}for meeting the limited wind energy turbine set minimum number definite value of whole wind-powered electricity generation, P _{lF_max}for the maximum of honourable Transmission Corridor in overall region is sent limit definite value, P _{lF_cur}for the current of honourable Transmission Corridor in overall region gained merit, P _{lF_Limit}for the not limited Transmission Corridor nargin of whole wind-powered electricity generation minimum value definite value;

Whether limited according to wind-powered electricity generation in each subregion of following condition judgment again, when condition 4., 5., while 6. meeting, think that wind-powered electricity generation is limited in this subregion simultaneously; Otherwise, think that the interior wind-powered electricity generation of this subregion is not limited:

4. the P of certain wind energy turbine set in this subregion _{w_Area_Cur}+ Δ P _set> P _{w_Area_Plan}

5. the wind energy turbine set number satisfying condition in this subregion is 4. more than or equal to NUM _{w_Area_min}

⑥(P _{LF_area_max}-P _{LF_area_cur})＜P _{LF_area_Limit}

P wherein _{w_Area_Cur}for the current of this wind energy turbine set in subregion exerted oneself, Δ P _setthe meritorious deviation definite value of exerting oneself of this wind energy turbine set, P _{w_Area_Plan}for the current planning of this wind energy turbine set in subregion, NUM _{w_Area_min}for meeting the limited wind energy turbine set minimum number definite value of this subregion wind-powered electricity generation, P _{lF_area_max}for the maximum of this subregion scene Transmission Corridor is sent limit definite value, P _{lF_area_cur}for current the gaining merit of this subregion scene Transmission Corridor, P _{lF_area_Limit}for the not limited Transmission Corridor nargin of this subregion wind-powered electricity generation minimum value definite value;

If 3-2) according to above judgement, show that in the limited and all subregions of whole wind-powered electricity generation, wind-powered electricity generation is not subject to, to enter step 3-3 in limited time);

If according to above judgement, show that the limited while of whole wind-powered electricity generation also exists wind-powered electricity generation in subregion to be subject to, to enter step 3-4 in limited time);

If according to above judgement, show that in the limited and not all subregions of whole wind-powered electricity generation, wind-powered electricity generation is not subject to, to enter step 3-5 in limited time yet);

If according to above judgement, show that whole wind-powered electricity generation is not limited but exist wind-powered electricity generation in subregion to be subject to, to enter step 3-6 in limited time);

3-3) first count the photovoltaic plant number Num that meets the condition of subduing in overall region: if current the exerting oneself of certain photovoltaic plant is greater than the minimum planned limit definite value of this photovoltaic plant in overall region, this photovoltaic plant is the photovoltaic plant that meets the condition of subduing in overall region;

Then, calculate the total amount of the subduing P of photovoltaic plant that meets the condition of subduing in overall region _reduce:

$P_{\mathrm{Reduce}}=\mathrm{Min}\left(P_{\mathrm{Reduce}\_\max \_\mathrm{set},}\underset{i=1}{\overset{\mathrm{Num}}{\mathrm{\Σ}}}(P_{{\mathrm{PV}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\min }_i})\right)$

In formula, P _{reduce_max_set}for single in overall region is subdued maximum total amount definite value, for meeting the current of i photovoltaic plant of the condition of subduing in overall region, exert oneself, for meeting the minimum planned limit definite value of i photovoltaic plant of the condition of subduing in overall region;

Then, calculate the plan of newly exerting oneself that meets each photovoltaic plant of the condition of subduing in overall region:

$P_{A\_\mathrm{NewPlan}}=P_{\mathrm{PV}\_A\_\mathrm{Cur}}-P_{\mathrm{Reduce}}*((P_{\mathrm{PV}\_A\_\mathrm{Cur}}-P_{\mathrm{PV}\_A\_\min })/\underset{i=1}{\overset{\mathrm{Num}}{\mathrm{\Σ}}}(P_{{\mathrm{PV}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\min }_i}))$

In formula, P _{a_NewPlan}represent the plan of newly exerting oneself separately of each photovoltaic plant that meets the condition of subduing in overall region, P _{pV_A_Cur}represent current the exerting oneself separately of each photovoltaic plant that meets the condition of subduing in overall region, P _{pV_A_min}represent and meet each photovoltaic plant of subduing under condition minimum planned limit definite value separately in overall region;

Finally, calculate the plan of newly exerting oneself that does not meet each photovoltaic plant of the condition of subduing in overall region:

P _{B_NewPlan}＝P _{B_Cur_Plan}

In formula, P _{b_NewPlan}represent in overall region the plan of newly exerting oneself separately of each photovoltaic plant that does not meet the condition of subduing, P _{b_Cur_Plan}represent in overall region the current planning separately of each photovoltaic plant that does not meet the condition of subduing;

When 3-4) if current control type is whole control, according to step 3-3) the method plan of newly exerting oneself of calculating each photovoltaic plant;

If current control type is subregion while controlling, according to the plan of newly exerting oneself of following each photovoltaic plant of process computation:

First, count the photovoltaic plant number Num_area that meets the condition of subduing in the limited subregion of each wind-powered electricity generation: if current the exerting oneself of certain photovoltaic plant is greater than the minimum planned limit definite value of this photovoltaic plant in the limited subregion of certain wind-powered electricity generation, this photovoltaic plant is the photovoltaic plant that meets the condition of subduing in the limited subregion of this wind-powered electricity generation;

Then, calculate the satisfied total amount of subduing of photovoltaic plant of subduing condition of the limited subregion of each wind-powered electricity generation:

$P_{\mathrm{Reduce}\_\mathrm{Area}}=\mathrm{Min}(P_{\mathrm{Reduce}\_\max \_\mathrm{area}\_\mathrm{set}},\underset{i=1}{\overset{\mathrm{Num}\_\mathrm{area}}{\mathrm{\Σ}}}(P_{{\mathrm{PV}\_\mathrm{area}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\mathrm{area}\_\min }_i}))$

In formula, P _{reduce_Area}represent the limited subregion of each wind-powered electricity generation satisfied total amount of subduing of photovoltaic plant of subduing condition separately, P _{reduce_max_area_set}represent that the limited subregion of each wind-powered electricity generation single separately subdues maximum total amount definite value, represent that in the limited subregion of each wind-powered electricity generation, satisfied the current of i photovoltaic plant of subduing condition exerted oneself, represent the minimum planned limit that meets i photovoltaic plant of the condition of subduing in the limited subregion of each wind-powered electricity generation;

Then, calculating the satisfied photovoltaic plant of subduing condition in the limited subregion of each wind-powered electricity generation newly plans:

$P_{A\_\mathrm{Area}\_\mathrm{NewPlan}}=P_{\mathrm{PV}\_A\_\mathrm{Area}\_\mathrm{Cur}}-P_{\mathrm{Reduce}\_\mathrm{Area}}*\left(\frac{P_{\mathrm{PV}\_A\_\mathrm{Area}\_\mathrm{Cur}}-P_{\mathrm{PV}\_A\_\mathrm{Area}\_\min }}{{\mathrm{\Σ}}_{i=1}^{\mathrm{Num}\_\mathrm{area}}(P_{{\mathrm{PV}\_\mathrm{area}\_\mathrm{cur}}_i}-P_{{\mathrm{PV}\_\mathrm{area}\_\min }_i})}\right)$

In formula, P _{a_Area_NewPlan}represent the plan of newly exerting oneself separately of each photovoltaic plant that meets the condition of subduing in the limited subregion of each wind-powered electricity generation, P _{pV_A_Area_Cur}represent current the exerting oneself separately of each photovoltaic plant that meets the condition of subduing in the limited subregion of each wind-powered electricity generation, P _{pV_A_Area_min}represent the minimum planned limit definite value separately of each photovoltaic plant that meets the condition of subduing in the limited subregion of each wind-powered electricity generation;

Then, calculate the new plan that does not meet the photovoltaic plant of the condition of subduing in the limited subregion of each wind-powered electricity generation:

P _{B_Area_NewPlan}＝P _{B_Area_Cur_Plan}

In formula, P _{b_Area_NewPlan}represent in the limited subregion of each wind-powered electricity generation the plan of newly exerting oneself separately of each photovoltaic plant that does not meet the condition of subduing, P _{b_Area_Cur_Plan}represent in the limited subregion of each wind-powered electricity generation the current planning separately of each photovoltaic plant that does not meet the condition of subduing;

Finally, calculate the new plan of each photovoltaic plant in the not limited subregion of each wind-powered electricity generation:

P _{C_NewPlan}＝P _{C_Cur_Plan}

P in formula _{c_NewPlan}represent each photovoltaic plant plan of newly exerting oneself separately in the not limited subregion of each wind-powered electricity generation, P _{c_Cur_Plan}represent each photovoltaic plant current planning separately in the not limited subregion of each wind-powered electricity generation;

3-5) current planning in overall region is less than to the photovoltaic plant of working capacity, by its working capacity ratio, promotes, calculate the plan of newly exerting oneself of the photovoltaic plant that each current planning is less than working capacity:

$P_{D\_\mathrm{NewPlan}}=\min (P_{D\_\mathrm{Cur}\_\mathrm{Plan}}+\frac{P_{\mathrm{Set}\_\mathrm{Area}\_\mathrm{Add}}*(P_{D\_\mathrm{PV}\_\mathrm{Run}}-P_{D\_\mathrm{Cur}\_\mathrm{Plan}})}{{\mathrm{\Σ}}_{i=1}^n(P_{i\_\mathrm{PV}\_\mathrm{Run}}-P_{i\_\mathrm{Cur}\_\mathrm{Plan}})},P_{D\_\mathrm{PV}\_\mathrm{Run}})$

In formula, P _{d_NewPlan}represent the plan of newly exerting oneself separately of photovoltaic plant that each current planning in overall region is less than working capacity, P _{d_Cur_Plan}represent the current planning separately of photovoltaic plant that each current planning in overall region is less than working capacity, P _{set_Area_Add}represent that each current planning is less than the single lift total amount definite value of the photovoltaic plant place subregion of working capacity, P _{d_PV_Run}represent photovoltaic plant that each current planning in overall region is less than working capacity working capacity separately, n is the total number of photovoltaic plant that in overall region, current planning is less than working capacity, P _{i_PV_Run}represent that interior i the current planning of overall region is less than the working capacity of the photovoltaic plant of working capacity, P _{i_Cur_Plan}represent that interior i the current planning of overall region is less than the current planning of the photovoltaic plant of working capacity;

Current planning in overall region is not less than to the photovoltaic plant of working capacity, it is constant that its plan of newly exerting oneself maintains its current planning;

3-6) for the limited subregion of each wind-powered electricity generation, according to step 3-4) in current control type be the plan of newly exerting oneself that the computational methods of subregion while controlling are calculated each photovoltaic plant;

For the not limited subregion of each wind-powered electricity generation, the photovoltaic plant to wherein current planning is less than working capacity, calculates its plan of newly exerting oneself as follows:

$P_{E\_\mathrm{NewPlan}}=\min (P_{E\_\mathrm{Cur}\_\mathrm{Plan}}+\frac{P_{\mathrm{Set}\_\mathrm{Area}\_\mathrm{Add}}*(P_{E\_\mathrm{PV}\_\mathrm{Run}}-P_{E\_\mathrm{Cur}\_\mathrm{Plan}})}{{\mathrm{\Σ}}_{i=1}^m(P_{i\_\mathrm{Area}\_\mathrm{PV}\_\mathrm{Run}}-P_{i\_\mathrm{Area}\_\mathrm{Cur}\_\mathrm{Plan}})},P_{E\_\mathrm{PV}\_\mathrm{Run}})$

In formula, P _{e_NewPlan}represent the plan of newly exerting oneself separately of photovoltaic plant that each current planning in the not limited subregion of each wind-powered electricity generation is less than working capacity, P _{e_Cur_Plan}represent the current planning separately of photovoltaic plant that each current planning in the not limited subregion of each wind-powered electricity generation is less than working capacity, P _{e_PV_Run}represent photovoltaic plant that each current planning in the not limited subregion of each wind-powered electricity generation is less than working capacity working capacity separately, m represents in the not limited subregion of each wind-powered electricity generation that current planning is separately less than the total number of photovoltaic plant of working capacity, P _{i_Area_PV_Run}represent that interior i the current planning of the not limited subregion of each wind-powered electricity generation is less than the working capacity of the photovoltaic plant of working capacity, P _{i_Area_Cur_Plan}represent that interior i the current planning of the not limited subregion of each wind-powered electricity generation is less than the current planning of the photovoltaic plant of working capacity;

For the not limited subregion of each wind-powered electricity generation, current planning is wherein not less than to the photovoltaic plant of working capacity, it is constant that its plan of newly exerting oneself maintains its current planning.