CN104269889A - Decentralized coordination AGC control method considering switching-in of various energy sources - Google Patents

Abstract

The invention particularly relates to a decentralized coordination AGC (Automatic Generation Control) control method considering switching-in of various energy sources. Implementation of the decentralized coordination AGC control method comprises the following links: 1, respectively carrying out cluster AGC control on decentralized ground-level units with a certain adjustable capacity in each area; 2, according to intermittent energy sources and normal distribution characteristics, dividing and determining decentralized coordination regions of AGC; 3, in each divided decentralized coordination region, determining a decentralized coordination unit; 4, when each decentralized coordination region executes whole network AGC control, aiming at the decentralized coordination unit in the region, regulating output to carry out coordination optimization; and 5, transmitting a regulation command subjected to coordination and optimization to each decentralized coordination unit. The decentralized coordination AGC control method considers the condition that various energy sources are switched into a power network, and has effects of improving frequency control performance of AGC and reinforcing adaptability of the power network to switching-in of the intermittent energy sources.

Description

A kind of decentralized coordinating AGC control method taking into account various energy resources access

Technical field

The present invention relates to electric power system and automatic field, especially relate to a kind of decentralized coordinating AGC control method taking into account various energy resources access.

Background technology

The automatic generation control (AGC) of interconnected network as the major control means for Power Systems and frequency, be mainly devoted to maintain system frequency and Tie line Power constant.The power generation energy resource in the past comprised in electric power system is mainly the conventional energy resource such as thermoelectricity and water power, and this type of energy in automatic electricity generation control system, be easy to regulation and control and changed power is comparatively mild.But along with the intermittent energy source such as current wind-powered electricity generation, photovoltaic, small power station are grid-connected in a large number, in system, there is power generation energy resource multiple style.The access of intermittent energy source brings following problem will to current automatic electricity generation control system: exerting oneself due to intermittent energy source has uncertainty, intermittent energy source power fluctuation in short-term makes electric network active amount of unbalance increase, thus cause FREQUENCY CONTROL hydraulic performance decline, simultaneously, when the power fluctuation that cluster intermittent energy source causes in some areas be difficult to dissolve stabilize time, stable cross section between area power grid will be affected, giving up for ensureing that safe operation of electric network need be exerted oneself to the intermittent power supply in this region, causing the utilance of intermittent energy source to reduce.

For the situation of the access of current various energy resources, the automatic power generation control method proposed at present mainly contains two kinds: method one concentrates the intermittent energy source of the whole network to consider as negative direction load, utilize in routine and adjust AGC unit, carry out unifying to coordinate to reduce meritorious amount of unbalance in network-wide basis; Method two is in network-wide basis, the section situation of key monitoring arranges corresponding sub-controlled area as required, controlled by the AGC adjusting the coordination of AGC unit to complete the whole network in the routine of master control district and sub-controlled area, ensureing to reduce district control deviation under the prerequisite that section is not out-of-limit, the relative first method of the method improves to some extent.But along with the grid connection capacity of intermittent energy source in each area increases, the reply demand that the regulating power of conventional AGC unit also will be difficult to meet intermittent energy source and causes meritorious amount of unbalance to increase, this pressure increase that will the whole network frequency adjustment caused to control, and above-mentioned two kinds of methods lack adaptive solution for this problem, simultaneously, above-mentioned two kinds of methods do not consider the spatial distribution differences of various intermittent energy source at the whole network in AGC control procedure yet, the potential potential safety hazard of some areas operation of power networks is caused to increase, and above-mentioned two kinds of methods also fail reasonably to distribute regulation and control resource according to the fluctuation situation of intermittent power supply.

Summary of the invention

The present invention is the technical problem solving prior art existence, provide a kind of situation having taken into account various energy resources access electrical network, adjust in making in AGC controls that the unit of (county's tunes) is coordinated mutually, reasonable distribution harmonically, intermittent energy source is accessed a kind of decentralized coordinating AGC control method taken into account various energy resources and access that the problem produced carries out solving on the cooperation control in each decentralized coordinating district

Technical problem of the present invention is mainly solved by following technical proposals:

Take into account a decentralized coordinating AGC control method for various energy resources access, it is characterized in that, comprise the following steps:

Step 1: the region unit with adjustability that each department disperse is carried out clustered control respectively, is divided into some cluster V ₁, V ₂, V ₃.。。V _n, each cluster is equivalent to a Virtual Access Gateway C unit, makes it participate in AGC and control;

Step 2: according to intermittent power supply and normal power supplies characteristic distributions, the whole network is divided multiple decentralized coordinating district A ₁, A ₂, A ₃.。。A _n, after division, each decentralized coordinated control district the whole network AGC control in be equivalent to an AGC unit, possess AGC unit attribute and accept in adjust AGC regulation and control instruction; Wherein, the division in decentralized coordinating district need meet constraints:

Intermittent power supply must be comprised in condition one, the decentralized coordinating district that divides;

Middle tune AGC unit must be comprised in condition two, the decentralized coordinating district that divides;

Step 3: according to the decentralized coordinating district situation divided, by A in step 2 ₁, A ₂, A ₃.。。A _nmiddle tune unit in decentralized coordinating district and A ₁, A ₂, A ₃.。。A _ncluster Virtual Access Gateway C unit described in the step 1 of interior correspondence is selected as decentralized coordinating unit, participates in the cooperation control in this decentralized coordinating district; Corresponding decentralized coordinating district A arbitrarily _n, internal adjustable control unit meets following constraints:

Condition one, decentralized coordinating district A _nthe regulatable conventional AGC unit a inside had _n, conventional AGC unit a _ncomprise middle tune thermoelectricity and middle water transfer electricity;

Condition two, decentralized coordinating district A _ninside have and assemble crowd unit b regulatablely _n, crowd unit b is assembled on this ground _ni.e. cluster Virtual Access Gateway C unit, comprise have regulating power ground adjust thermoelectricity, turn water power power supply down;

Step 4: each decentralized coordinating district according in adjust the control command issued, in encircled area, each decentralized coordinating unit is optimized coordination, concrete grammar is: each decentralized coordinating district is as Equivalent A GC unit, and control centre distributes the total regulated quantity issued to each decentralized coordinating district and is the coordination unit of each decentralized coordinating district again in encircled area carries out coordinated allocation, by coordinating between dissimilar unit, reaching and reducing the meritorious amount of unbalance in local, as far as possible the object of the intermittent power supply of on-site elimination; Each decentralized coordinating district for coordinated allocation method, namely coordination area on the spot multilevel coordination optimization method describe as follows:

The unit of different stage and type is by setting up certain target function in coordination area, and carry out coordination optimization meeting under corresponding constraints, its model is as follows:

$\min G(\stackrel{\·}{\mathrm{\β}}\left(t\right),\stackrel{\·}{\mathrm{\γ}}\left(t\right),\stackrel{\·}{\mathrm{\θ}}\left(t\right))$

$\stackrel{\·}{\mathrm{\β}}\left(t\right)=[{\mathrm{\β}}_1\left(t\right),{\mathrm{\β}}_2\left(t\right)......{\mathrm{\β}}_i\left(t\right)]$

$\stackrel{\·}{\mathrm{\γ}}\left(t\right)=[{\mathrm{\γ}}_1\left(t\right),{\mathrm{\γ}}_2\left(t\right)......{\mathrm{\γ}}_i\left(t\right)]$ Formula one

$\stackrel{\·}{\mathrm{\θ}}\left(t\right)=[{\mathrm{\θ}}_1\left(t\right),{\mathrm{\θ}}_2\left(t\right)......{\mathrm{\θ}}_i\left(t\right)]$

β in formula ₁(t), β ₂(t) ... β _it () is respectively the coordinated allocation coefficient adjusting AGC fired power generating unit in t coordination area in i-th, γ ₁(t), γ ₂(t) ... γ _it () is respectively the coordinated allocation coefficient adjusting AGC Hydropower Unit in t coordination area in i-th, θ ₁(t), θ ₂(t) ... θ _it () is respectively the distribution coefficient of i-th cluster Virtual Access Gateway C unit in t coordination area;

Consider the uniformity of distribution coefficient, meet equality constraint:

β ₁(t)+β ₂(t)+...+β _i(t)+γ ₁(t)+γ ₂(t)+...+γ _i(t)+θ ₁(t)+θ ₂(t)+...+θ _i(t)=1 formula two

Meanwhile, in region, each decentralized coordinating unit need meet the constraint of certain pondage and regulations speed;

$\underset{\‾}{R_i^{\mathrm{STR}}}\·T\≤(\mathrm{\Δ}{P}_i^{\mathrm{STR}}\left(t\right)={\mathrm{\β}}_i\left(t\right)\·\mathrm{\Δ}{P}_{\mathrm{An}})\≤\stackrel{\‾}{R_i^{\mathrm{STR}}}\·T$ Formula three

$\underset{\‾}{R_i^{\mathrm{HYD}}}\·T\≤(\mathrm{\Δ}{P}_i^{\mathrm{HYD}}\left(t\right)={\mathrm{\γ}}_i\left(t\right)\·\mathrm{\Δ}{P}_{\mathrm{An}})\≤\stackrel{\‾}{R_i^{\mathrm{HYD}}}\·T$ Formula four

$\underset{\‾}{R_i^{\mathrm{VIR}}}\·T\≤(\mathrm{\Δ}{P}_i^{\mathrm{VIR}}\left(t\right)={\mathrm{\γ}}_i\left(t\right)\·\mathrm{\Δ}{P}_{\mathrm{An}})\≤\stackrel{\‾}{R_i^{\mathrm{VIR}}}\·T$ Formula five

$\underset{\‾}{P_i^{\mathrm{STR}}}\≤P_i^{\mathrm{STR}}(t-T)+\mathrm{\Δ}{P}_i^{\mathrm{STR}}\left(t\right)\≤\stackrel{\‾}{P_i^{\mathrm{STR}}}$ Formula six

$\underset{\‾}{P_i^{\mathrm{HYD}}}\≤P_i^{\mathrm{HYD}}(t-T)+\mathrm{\Δ}{P}_i^{\mathrm{HYD}}\left(t\right)\≤\stackrel{\‾}{P_i^{\mathrm{HYD}}}$ Formula seven

$\underset{\‾}{P_i^{\mathrm{VIR}}}\≤P_i^{\mathrm{VIR}}(t-T)+\mathrm{\Δ}{P}_i^{\mathrm{VIR}}\left(t\right)\≤\stackrel{\‾}{P_i^{\mathrm{VIR}}}$ Formula eight

In above formula, T is that AGC control command issues the cycle, with for being respectively each middle tune thermoelectricity AGC unit in decentralized coordinating district, middle water transfer electricity AGC unit and the cluster Virtual Access Gateway C unit regulated quantity of exerting oneself in t; speed change rate in the maximum permission being respectively all kinds of coordination unit, be respectively speed change rate under the maximum permission of all kinds of coordination unit, be respectively the meritorious upper limit of exerting oneself of all kinds of coordination unit; be respectively the meritorious lower limit of exerting oneself of all kinds of coordination unit;

Step 5: after calculating the AGC regulated quantity of all kinds of coordination unit in decentralized coordinating district, optimization is coordinated result and is formed AGC regulation and control instruction by each decentralized coordinating district, is handed down to each decentralized coordinating unit.

In above-mentioned a kind of decentralized coordinating AGC control method taking into account various energy resources access, described step 5 need be followed to give an order to issue condition:

Condition one, assembles group Virtual Access Gateway C unit for ground, and its AGC regulating command is passed on to give by middle tune EMS and adjusted EMS accordingly, then issues after adjusting EMS system to perform lower Layer assignment to this cluster Virtual Access Gateway C unit by ground;

Condition two, for the thermoelectricity, the water power AGC unit that belong to middle tune, its AGC regulating command is directly issued by middle tune EMS.

The present invention accesses electrical network around various energy resources, for the intermittence and uncertain and meritorious amount of unbalance that is that cause increases and be difficult to the problem that on-site elimination is stabilized of exerting oneself due to intermittent energy source itself, utilizing on original conventional energy resource regulating measure basis, proposing a kind of decentralized coordinating AGC control method taking into account various energy resources access.

The present invention is in the process of automatic generation control, consider and there is the probabilistic intermittent energy source distribution situation of interval, fully excavate in this type of energy intensive Distribution Area the ability of regulation and control of unit of adjusting a wage scale, the unit of partial electric grid different stage is combined and forms decentralized coordinating district, make it participate in the whole network AGC to regulate with retentive control consistency, simultaneously reducing the effect in meritorious amount of unbalance that intermittent energy source causes and increase intermittent energy source on-site elimination in order to decentralized coordinating district can be played, further distribution is optimized to the unit in decentralized coordinating district, the FREQUENCY CONTROL performance strengthening entire system with this and the ability that local having a rest property of interzone energy consumption is stabilized.

The present invention has set forth the utilization of distributed generation resource, the choosing of decentralized coordinating unit, the coordinating of decentralized coordinating district and the whole network AGC, decentralized coordinating district optimal control method respectively and has coordinated unit instruction and issued passage, sums up and defines following technical scheme.

By adopting above-mentioned decentralized coordinating AGC control method, take into account the situation of various energy resources access electrical network, adjust in making in AGC controls that the unit of (county's tune) is coordinated mutually, reasonable distribution harmonically, intermittent energy source is accessed the problem produced and solve on the cooperation control in each decentralized coordinating district.So can reduce the meritorious amount of unbalance of electrical network, enhance the adaptability of electrical network to intermittent plant-grid connection.

Accompanying drawing explanation

Accompanying drawing 1 is adjusted on ground unit clustering to participate in AGC in embodiments of the invention to regulate schematic diagram.

Accompanying drawing 2 be in embodiments of the invention decentralized coordinating district composition and with middle tune joining relation schematic diagram.

Accompanying drawing 3 is schematic diagrames that in embodiments of the invention, decentralized coordinating unit is chosen.

Accompanying drawing 4 is that in embodiments of the invention, in decentralized coordinating district, unit cooperative distributes schematic diagram.

Accompanying drawing 5 is that in embodiments of the invention, the instruction of decentralized coordinating unit issues access diagram.

Simulation model schematic diagram before this control method adopted in embodiments of the invention by accompanying drawing 6.

Accompanying drawing 7 adopts this control method post-simulation model schematic in embodiments of the invention.

Accompanying drawing 8 adopts emulation experiment frequency departure schematic diagram before this method in embodiments of the invention.

Accompanying drawing 9 adopts this method post-simulation test frequency deviation schematic diagram in embodiments of the invention.

Accompanying drawing 10 adopts emulation experiment CPS index schematic diagram before this method in embodiments of the invention.

Accompanying drawing 11 adopts this method post-simulation to test CPS index schematic diagram in embodiments of the invention.

Accompanying drawing 12 is emulation experiment contrast form schematic diagrames in embodiments of the invention.

Accompanying drawing 13 is method flow schematic diagrames of the present invention.

Embodiment

Below by Case Simulation, and by reference to the accompanying drawings, technical scheme of the present invention is clearly and completely described.

One, first, method of the present invention is introduced:

Step 1: the region unit with adjustability that each department disperse is carried out clustered control respectively, each cluster is equivalent to a Virtual Access Gateway C unit, makes it participate in AGC and controls, in the system of setting, define V as shown in Figure 1 ₁, V ₂, V ₃, V ₄four clusters, namely have four clusters to can be used as Virtual Access Gateway C unit and participate in AGC adjustment;

Step 2: the feature distributed according to intermittent energy source and conventional energy resource, marks off decentralized coordinating district A ₁, on this basis, decentralized coordinating district A ₁the whole network AGC control in be equivalent to an AGC unit, possess AGC unit attribute and accept in adjust AGC regulation and control instruction.Decentralized coordinating district A ₁composition and with wherein adjust the joining relation of AGC as shown in Figure 2;

Step 3: at determined decentralized coordinating district A ₁in, in wherein, adjust unit using regional cluster AGC unit as decentralized coordinating unit, as shown in accompanying drawing 2, accompanying drawing 3, have selected fired power generating unit G ₁, G ₂, Hydropower Unit G ₃, G ₄and regional cluster Virtual Access Gateway C unit G ₅participate in the decentralized coordinated control of local;

For decentralized coordinating district A ₁, its internal adjustable control unit is configured with following relation: wherein, a ₁for the regulatable conventional AGC unit in decentralized coordinating district, namely selected fired power generating unit G ₁, G ₂, Hydropower Unit G ₃, G ₄; b ₁for in decentralized coordinating district each assemble group unit (i.e. cluster Virtual Access Gateway C unit), namely selected unit G ₅.

Step 4: decentralized coordinating district A ₁as Equivalent A GC unit, control centre distributes total regulated quantity issued to it and is decentralized coordinating district A ₁coordination unit G again in encircled area ₁, G ₂, G ₃, G ₄and G ₅carry out coordinated allocation, by coordinating between dissimilar unit, reaching and reducing the meritorious amount of unbalance in local, as far as possible the object of the intermittent power supply of on-site elimination, as shown in Figure 4.Decentralized coordinating district A ₁for coordinated allocation method, namely coordination area on the spot multilevel coordination optimization method describe as follows:

The unit of different stage and type is by setting up certain target function in coordination area, and carry out coordination optimization meeting under corresponding constraints, its model is as follows:

$\min G(\stackrel{\·}{\mathrm{\β}}\left(t\right),\stackrel{\·}{\mathrm{\γ}}\left(t\right),\stackrel{\·}{\mathrm{\θ}}\left(t\right))$

$\stackrel{\·}{\mathrm{\β}}\left(t\right)=[{\mathrm{\β}}_1\left(t\right),{\mathrm{\β}}_2\left(t\right)]$

$\stackrel{\·}{\mathrm{\γ}}\left(t\right)=[{\mathrm{\γ}}_1\left(t\right),{\mathrm{\γ}}_2\left(t\right)]---\left(1\right)$

$\stackrel{\·}{\mathrm{\θ}}\left(t\right)=\left[{\mathrm{\θ}}_1\left(t\right)\right]$

β in formula ₁(t), β ₂t () is respectively in t coordination area and adjusts AGC fired power generating unit (i.e. G ₁, G ₂) coordinated allocation coefficient, γ ₁(t), γ ₂t () is respectively in t coordination area and adjusts AGC Hydropower Unit (i.e. G ₃, G ₄) coordinated allocation coefficient, θ ₁t () is respectively cluster Virtual Access Gateway C unit G in t coordination area ₅distribution coefficient.

Consider the uniformity of distribution coefficient, meet equality constraint:

β ₁(t)+β ₂(t)+γ ₁(t)+γ ₂(t)+θ ₁(t)＝1 (2)

Meanwhile, in region, each decentralized coordinating unit need meet the constraint of certain pondage and regulations speed.

$\underset{\‾}{R_i^{\mathrm{STR}}}\·T\≤(\mathrm{\Δ}{P}_i^{\mathrm{STR}}\left(t\right)={\mathrm{\β}}_i\left(t\right)\·\mathrm{\Δ}{P}_{\mathrm{An}})\≤\stackrel{\‾}{R_i^{\mathrm{STR}}}\·T---\left(3\right)$

$\underset{\‾}{R_i^{\mathrm{HYD}}}\·T\≤(\mathrm{\Δ}{P}_i^{\mathrm{HYD}}\left(t\right)={\mathrm{\γ}}_i\left(t\right)\·\mathrm{\Δ}{P}_{\mathrm{An}})\≤\stackrel{\‾}{R_i^{\mathrm{HYD}}}\·T---\left(4\right)$

$\underset{\‾}{R_i^{\mathrm{VIR}}}\·T\≤(\mathrm{\Δ}{P}_i^{\mathrm{VIR}}\left(t\right)={\mathrm{\γ}}_i\left(t\right)\·\mathrm{\Δ}{P}_{\mathrm{An}})\≤\stackrel{\‾}{R_i^{\mathrm{VIR}}}\·T---\left(5\right)$

$\underset{\‾}{P_i^{\mathrm{STR}}}\≤P_i^{\mathrm{STR}}(t-T)+\mathrm{\Δ}{P}_i^{\mathrm{STR}}\left(t\right)\≤\stackrel{\‾}{P_i^{\mathrm{STR}}}---\left(6\right)$

$\underset{\‾}{P_i^{\mathrm{HYD}}}\≤P_i^{\mathrm{HYD}}(t-T)+\mathrm{\Δ}{P}_i^{\mathrm{HYD}}\left(t\right)\≤\stackrel{\‾}{P_i^{\mathrm{HYD}}}---\left(7\right)$

$\underset{\‾}{P_i^{\mathrm{VIR}}}\≤P_i^{\mathrm{VIR}}(t-T)+\mathrm{\Δ}{P}_i^{\mathrm{VIR}}\left(t\right)\≤\stackrel{\‾}{P_i^{\mathrm{VIR}}}---\left(8\right)$

In above formula, T is that AGC control command issues the cycle, with for being respectively each middle tune thermoelectricity AGC unit in decentralized coordinating district, middle water transfer electricity AGC unit and the cluster Virtual Access Gateway C unit regulated quantity of exerting oneself in t; speed change rate in the maximum permission being respectively all kinds of coordination unit, be respectively speed change rate under the maximum permission of all kinds of coordination unit, be respectively the meritorious upper limit of exerting oneself of all kinds of coordination unit; be respectively the meritorious lower limit of exerting oneself of all kinds of coordination unit.

Step 5: calculate decentralized coordinating district A ₁after the AGC regulated quantity of all kinds of coordination unit, need follow gives an order issues principle: one, group Virtual Access Gateway C unit is assembled for ground, its AGC regulating command is given by the reception and registration of middle tune EMS (EMS) and is adjusted EMS (EMS) accordingly, issue after adjusting EMS system to perform lower Layer assignment to this cluster Virtual Access Gateway C unit by ground again, G ₅regulating command is accepted according to this principle; Its two, for the thermoelectricity, the water power AGC unit that belong to middle tune, its AGC regulating command is directly issued by middle tune EMS, G ₁, G ₂, G ₃, G ₄namely regulating command is accepted according to this principle.Specifically can with reference to shown in accompanying drawing 5.

Two, be the concrete simulation example adopting said method below:

For the electrical network of a regional internet, MATLAB/SIMULINK is utilized to establish the model of AGC control, wherein according to the model partition Chu Liaoyige decentralized coordinating district A constructed by this control method ₁.Simulating, verifying has been carried out respectively below for (accompanying drawing 7) after (accompanying drawing 6) before this control method of employing and this control method of employing.Contrasted by simulation result, choosing of the important simulation parameter of part is as follows: PI controller parameter is chosen as: K _p=0.09, K _i=0.15, R ₁=R ₂=R ₃=0.0526Hz/p.u.MW, β ₁, γ ₁, θ ₁be respectively in coordination area the adjustment proportionality coefficient coordinated fired power generating unit, coordination Hydropower Unit and cluster Virtual Access Gateway C unit and distribute, in concrete unit modeling, fired power generating unit parameter gets T _g1=0.2s, K _r1=0.3, T _r1=7s, T _t1=0.3s, gets T for Hydropower Unit _g=5s, T _w=1s, (T _t* R)/T _r=0.0526s, T _r=5s.The intermittent energy of fluctuating range 4% is accessed in emulation, and fluctuating range 5% load, simulation result is as shown in legend 8, legend 9, legend 10, legend 11.

Specific embodiment described in the present invention is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.

Claims (2)

1. take into account a decentralized coordinating AGC control method for various energy resources access, it is characterized in that, comprise the following steps:

Step 1: the region unit with adjustability that each department disperse is carried out clustered control respectively, is divided into some cluster V ₁, V ₂, V ₃.。。V _n, each cluster is equivalent to a Virtual Access Gateway C unit, makes it participate in AGC and control;

Step 2: according to intermittent power supply and normal power supplies characteristic distributions, the whole network is divided multiple decentralized coordinating district A ₁, A ₂, A ₃.。。A _n, after division, each decentralized coordinated control district the whole network AGC control in be equivalent to an AGC unit, possess AGC unit attribute and accept in adjust AGC regulation and control instruction; Wherein, the division in decentralized coordinating district need meet constraints:

Intermittent power supply must be comprised in condition one, the decentralized coordinating district that divides;

Middle tune AGC unit must be comprised in condition two, the decentralized coordinating district that divides;

Step 3: according to the decentralized coordinating district situation divided, by A in step 2 ₁, A ₂, A ₃.。。A _nmiddle tune unit in decentralized coordinating district and A ₁, A ₂, A ₃.。。A _ncluster Virtual Access Gateway C unit described in the step 1 of interior correspondence is selected as decentralized coordinating unit, participates in the cooperation control in this decentralized coordinating district; Corresponding decentralized coordinating district A arbitrarily _n, internal adjustable control unit meets following constraints:

Condition one, decentralized coordinating district A _nthe regulatable conventional AGC unit a inside had _n, conventional AGC unit a _ncomprise middle tune thermoelectricity and middle water transfer electricity;

Condition two, decentralized coordinating district A _ninside have and assemble crowd unit b regulatablely _n, crowd unit b is assembled on this ground _ni.e. cluster Virtual Access Gateway C unit, comprise have regulating power ground adjust thermoelectricity, turn water power power supply down;

Step 4: each decentralized coordinating district according in adjust the control command issued, in encircled area, each decentralized coordinating unit is optimized coordination, concrete grammar is: each decentralized coordinating district is as Equivalent A GC unit, and control centre distributes the total regulated quantity issued to each decentralized coordinating district and is , the coordination unit of each decentralized coordinating district again in encircled area carries out coordinated allocation, by coordinating between dissimilar unit, reaching and reducing the meritorious amount of unbalance in local, as far as possible the object of the intermittent power supply of on-site elimination; Each decentralized coordinating district for coordinated allocation method, namely coordination area on the spot multilevel coordination optimization method describe as follows:

The unit of different stage and type is by setting up certain target function in coordination area, and carry out coordination optimization meeting under corresponding constraints, its model is as follows:

$\begin{array}{cc}\min & G(\stackrel{.}{\mathrm{\β}}\left(t\right),\stackrel{.}{\mathrm{\γ}}\left(t\right),\stackrel{.}{\mathrm{\θ}}\left(t\right))\end{array}$

$\stackrel{.}{\mathrm{\β}}\left(t\right)=[{\mathrm{\β}}_1\left(t\right),{\mathrm{\β}}_2\left(t\right)......{\mathrm{\β}}_i\left(t\right)]$

$\stackrel{.}{\mathrm{\γ}}\left(t\right)=[{\mathrm{\γ}}_1\left(t\right),{\mathrm{\γ}}_2\left(t\right)......{\mathrm{\γ}}_i\left(t\right)]$ Formula one

$\stackrel{.}{\mathrm{\θ}}\left(t\right)=[{\mathrm{\θ}}_1\left(t\right),{\mathrm{\θ}}_2\left(t\right)......{\mathrm{\θ}}_i\left(t\right)]$

β in formula ₁(t), β ₂(t) ... β _it () is respectively the coordinated allocation coefficient adjusting AGC fired power generating unit in t coordination area in i-th, γ ₁(t), γ ₂(t) ... γ _it () is respectively the coordinated allocation coefficient adjusting AGC Hydropower Unit in t coordination area in i-th, θ ₁(t), θ ₂(t) ... θ _it () is respectively the distribution coefficient of i-th cluster Virtual Access Gateway C unit in t coordination area;

Consider the uniformity of distribution coefficient, meet equality constraint:

β ₁(t)+β ₂(t)+...+β _i(t)+γ ₁(t)+γ ₂(t)+...+γ _i(t)+θ ₁(t)+θ ₂(t)+...+θ _i(t)=1 formula two

Meanwhile, in region, each decentralized coordinating unit need meet the constraint of certain pondage and regulations speed;

$\underset{\‾}{R_i^{\mathrm{STR}}}\·T\≤(\mathrm{\Δ}{P}_i^{\mathrm{STR}}\left(t\right)={\mathrm{\β}}_i\left(t\right)\·\mathrm{\Δ}{P}_{\mathrm{An}})\≤\stackrel{\‾}{R_i^{\mathrm{STR}}}\·T$ Formula three

$\underset{\‾}{R_i^{\mathrm{HYD}}}\·T\≤(\mathrm{\Δ}{P}_i^{\mathrm{HYD}}\left(t\right)={\mathrm{\γ}}_i\left(t\right)\·\mathrm{\Δ}{P}_{\mathrm{An}})\≤\stackrel{\‾}{R_i^{\mathrm{HYD}}}\·T$ Formula four

$\underset{\‾}{R_i^{\mathrm{VIR}}}\·T\≤(\mathrm{\Δ}{P}_i^{\mathrm{VIR}}\left(t\right)={\mathrm{\θ}}_i\left(t\right)\·\mathrm{\Δ}{P}_{\mathrm{An}})\≤\stackrel{\‾}{R_i^{\mathrm{VIR}}}\·T$ Formula five

$\underset{\‾}{P_i^{\mathrm{STR}}}\≤P_i^{\mathrm{STR}}(t-T)+\mathrm{\Δ}{P}_i^{\mathrm{STR}}\left(t\right)\≤\stackrel{\‾}{P_i^{\mathrm{STR}}}$ Formula six

$\underset{\‾}{P_i^{\mathrm{HYD}}}\≤P_i^{\mathrm{HYD}}(t-T)+\mathrm{\Δ}{P}_i^{\mathrm{HYD}}\left(t\right)\≤\stackrel{\‾}{P_i^{\mathrm{HYD}}}$ Formula seven

$\underset{\‾}{P_i^{\mathrm{VIR}}}\≤P_i^{\mathrm{VIR}}(t-T)+\mathrm{\Δ}{P}_i^{\mathrm{VIR}}\left(t\right)\≤\stackrel{\‾}{P_i^{\mathrm{VIR}}}$ Formula eight

In above formula, T is that AGC control command issues the cycle, for being respectively each middle tune thermoelectricity AGC unit in decentralized coordinating district, middle water transfer electricity AGC unit and the cluster Virtual Access Gateway C unit regulated quantity of exerting oneself in t; speed change rate in the maximum permission being respectively all kinds of coordination unit, be respectively speed change rate under the maximum permission of all kinds of coordination unit, be respectively the meritorious upper limit of exerting oneself of all kinds of coordination unit; be respectively the meritorious lower limit of exerting oneself of all kinds of coordination unit;

Step 5: after calculating the AGC regulated quantity of all kinds of coordination unit in decentralized coordinating district, optimization is coordinated result and is formed AGC regulation and control instruction by each decentralized coordinating district, is handed down to each decentralized coordinating unit.

2. a kind of decentralized coordinating AGC control method taking into account various energy resources access according to claim 1, it is characterized in that, described step 5 need be followed to give an order to issue condition:

Condition one, assembles group Virtual Access Gateway C unit for ground, and its AGC regulating command is passed on to give by middle tune EMS and adjusted EMS accordingly, then issues after adjusting EMS system to perform lower Layer assignment to this cluster Virtual Access Gateway C unit by ground;

Condition two, for the thermoelectricity, the water power AGC unit that belong to middle tune, its AGC regulating command is directly issued by middle tune EMS.