CN115483692A - Coordination control method and system based on electrolytic aluminum and polycrystalline silicon load polymerization - Google Patents
Coordination control method and system based on electrolytic aluminum and polycrystalline silicon load polymerization Download PDFInfo
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 title claims abstract description 315
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 313
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 313
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 61
- 238000012887 quadratic function Methods 0.000 claims abstract description 38
- 229920005591 polysilicon Polymers 0.000 claims description 92
- 238000004364 calculation method Methods 0.000 claims description 43
- 238000004519 manufacturing process Methods 0.000 claims description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 6
- 238000005868 electrolysis reaction Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000004445 quantitative analysis Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/004—Generation forecast, e.g. methods or systems for forecasting future energy generation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
The invention provides a coordination control method and a system based on electrolytic aluminum and polycrystalline silicon load polymerization, which comprises the following steps: collecting the load voltage of electrolytic aluminum and polycrystalline silicon in an industrial park; obtaining the actual maximum upward power regulating quantity and the actual maximum downward power regulating quantity of each load of the electrolytic aluminum and the polycrystalline silicon according to the load voltage quantities of the electrolytic aluminum and the polycrystalline silicon, the voltage regulating ranges of each electrolytic aluminum and the polycrystalline silicon load calculated in advance and a power voltage quadratic function model established in advance; distributing the unbalanced power of the industrial park according to the power grid requirement based on the proportion of the actual maximum upward power regulating quantity or the actual maximum downward power regulating quantity between each electrolytic aluminum and each polycrystalline silicon to obtain the load actual power regulating quantity of each electrolytic aluminum and each polycrystalline silicon; the method and the device evaluate the actual control quantity of the polycrystalline silicon and the electrolytic aluminum in the industrial load, ensure the power balance requirement of the power grid in the process of executing the distributed power supply consumption and the resource management of the demand side, and indirectly improve the stability of the power system.
Description
Technical Field
The invention belongs to the field of combination of planning and scheduling of an electric power system and demand side management, and particularly relates to a coordination control method and system based on electrolytic aluminum and polycrystalline silicon load aggregation.
Background
The supply and demand of the power grid mainly depend on power plants and demand side management means, but the installed capacity of industrial loads is large, the great potential is also hidden when the power grid participates in power fluctuation, and effective exploitation and utilization are not yet realized. The industrial load can improve the comprehensive utilization efficiency of energy resources, and the annual power consumption of the aluminum load and the steel load is about 1.1 trillion kilowatt-hour, so that the industrial load is an important resource for improving the operation flexibility of a power grid.
In the current research, the modes of industrial load participating in power grid optimization scheduling can be mainly divided into two types: one is to adjust the power generation schedule of the self-contained power plant. Many enterprises such as electrolytic aluminum plants and iron and steel plants are equipped with self-prepared power plants to reduce the power consumption cost. From the grid side, the industrial load and its own power plant can be considered as an equivalent load. And secondly, adjusting the start and stop of the industrial load. On the premise of ensuring that the production benefit of industrial users is not changed, the industrial load is fully enabled to participate in the trend that the power grid regulation and control operation such as power grid peak regulation and frequency regulation is not changed. In a word, no clear conclusion is provided for the problems of modes, legal status, specific measures and the like of industrial load participating in power grid supply and demand interaction implementation, a quantitative analysis model is lacked, and the regulation and control potential of the industrial load is difficult to fully excavate. In order to develop the adjustable potential of industrial load, the problems of wind and light abandonment of new energy sources need to be solved, and a perfect market mechanism is established to improve the problems of unbalanced supply and demand of regional power grids and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a coordination control method based on electrolytic aluminum and polycrystalline silicon load polymerization, which comprises the following steps:
collecting the load voltage of electrolytic aluminum and polycrystalline silicon in an industrial park;
obtaining the actual maximum upward power regulating quantity and the actual maximum downward power regulating quantity of each load of the electrolytic aluminum and the polycrystalline silicon according to the load voltage quantities of the electrolytic aluminum and the polycrystalline silicon, the voltage regulating ranges of each electrolytic aluminum and the polycrystalline silicon load calculated in advance and a power voltage quadratic function model established in advance;
distributing the unbalanced power of the industrial park according to the power grid requirement based on the proportion of the actual maximum upward power regulating quantity or the actual maximum downward power regulating quantity between each electrolytic aluminum and each polycrystalline silicon to obtain the load actual power regulating quantity of each electrolytic aluminum and each polycrystalline silicon;
wherein the voltage regulation range of each electrolytic aluminum and polysilicon load is obtained by utilizing the constraint calculation of the production process; the power voltage quadratic function model is determined according to the relation between the load voltage quantity and the load power of the electrolytic aluminum and the polycrystalline silicon.
Preferably, the step of distributing the unbalanced power of the industrial park according to the power grid requirement based on the actual maximum upward power regulating quantity or the actual maximum downward power regulating quantity ratio between each electrolytic aluminum and each polycrystalline silicon to obtain the actual load power regulating quantity of each electrolytic aluminum and each polycrystalline silicon comprises the following steps:
when the unbalanced power in the industrial park is larger than or equal to a preset value, the actual load power of each electrolytic aluminum and the polycrystalline silicon is adjusted upwards based on the proportion of the actual maximum upward power adjustment quantity between each electrolytic aluminum and the polycrystalline silicon, and the upward adjustment quantity of the actual load power of each electrolytic aluminum and the polycrystalline silicon is obtained;
when the unbalanced power in the industrial park is smaller than a preset value, downward adjustment is carried out on the actual load power of each electrolytic aluminum and each polycrystalline silicon based on the proportion of the actual maximum downward power adjustment quantity between each electrolytic aluminum and each polycrystalline silicon, and the downward adjustment quantity of the actual load power of each electrolytic aluminum and each polycrystalline silicon is obtained;
and the unbalanced power in the industrial park is obtained by subtracting the load power of the electrolytic aluminum and the polycrystalline silicon in the industrial park from the load power required by the power grid.
Preferably, the calculation formula of the load actual power upward adjustment amount of each of the electrolytic aluminum and the polycrystalline silicon is as follows:
the calculation formula of the downward adjustment quantity of the load actual power of each electrolytic aluminum and polysilicon is as follows:
in the formula,. DELTA.P Σ Unbalanced power for the industrial park; delta P loadi,up Is when Δ P Σ The load actual power of the ith electrolytic aluminum and the polycrystalline silicon is adjusted upwards by an amount which is more than or equal to 0; delta P loadi,down Is when Δ P Σ When the power is less than 0, the load actual power of the ith electrolytic aluminum and the polycrystalline silicon is adjusted downwards; i is the load of electrolytic aluminum and polysilicon in the industrial park;
the upward power adjustment quantity which is the actual maximum load of the ith electrolytic aluminum and the polycrystalline silicon;
the downward power adjustment quantity which is the actual maximum load of the ith electrolytic aluminum and the polycrystalline silicon; n is a radical of AL The number of electrolytic aluminum loads in the industrial park; n is a radical of hydrogen PCS The number of the polysilicon loads in the industrial park.
Preferably, the power voltage quadratic function model is a quadratic equation determined by the relationship between the load voltage amount and the load power according to the electrolytic aluminum and the polycrystalline silicon;
the first term and the second term coefficient of the power voltage quadratic function model are obtained by fitting the voltage and the resistance of electrolytic aluminum and polycrystalline silicon;
the determination of the first term coefficient and the second term coefficient of the electrolytic aluminum is obtained by fitting a direct current bus voltage rated value of an electrolytic cell for electrolyzing the aluminum and the series equivalent resistance of the electrolytic cell for electrolyzing the aluminum;
the first term coefficient and the second term coefficient of the polysilicon are determined by fitting the single-phase resistance of the polysilicon rod and the single-phase voltage of the polysilicon load.
Preferably, the power-voltage quadratic function model is calculated as follows:
in the formula, P Σ The load power of the electrolytic aluminum and the polycrystalline silicon for the industrial park;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon; n is a radical of hydrogen AL The number of electrolytic aluminum loads in the industrial park; n is a radical of hydrogen PCS The number of the polysilicon loads in the industrial park; a. The i The load voltage first-order coefficient of the ith electrolytic aluminum and the polycrystalline silicon; b is i Is the load voltage quadratic term coefficient of the ith electrolytic aluminum and the polycrystalline silicon;
the calculation formula of the load voltage first-term coefficient of the electrolytic aluminum and the polycrystalline silicon is as follows:
the calculation formula of the load voltage quadratic term coefficient of the electrolytic aluminum and the polycrystalline silicon is as follows:
in the formula, V BN，i A cell dc bus voltage rating for electrolytic aluminum electrolysis in the ith electrolytic aluminum and polycrystalline silicon; r EC,i The electrolytic bath for the ith electrolytic aluminum and the electrolytic aluminum in the polycrystalline silicon is connected with the equivalent resistance in series; r PCS,i The resistance is the single-phase resistance of a polysilicon rod in the ith electrolytic aluminum and polysilicon; i represents the total load of the electrolytic aluminum and the polycrystalline load,
a single phase voltage is applied to the ith of the electrolytic aluminum and the polysilicon.
Preferably, the obtaining the actually maximum upward power adjustment amount and the actual maximum downward power adjustment amount of each load of the electrolytic aluminum and the polycrystalline silicon according to the load voltage amounts of the electrolytic aluminum and the polycrystalline silicon, the voltage adjustment ranges of each load of the electrolytic aluminum and the polycrystalline silicon calculated in advance, and the pre-established power-voltage quadratic function model includes:
calculating the upward adjustable capacity and the downward adjustable capacity of the load voltage of each electrolytic aluminum and polycrystalline silicon according to the load voltage quantity of the electrolytic aluminum and the polycrystalline silicon and the voltage adjusting range of each electrolytic aluminum and polycrystalline silicon load calculated in advance;
and obtaining the actual maximum upward power regulating quantity and the actual maximum downward power regulating quantity of the load of each electrolytic aluminum and each electrolytic polysilicon according to the upward adjustable capacity and the downward adjustable capacity of each electrolytic aluminum and each electrolytic polysilicon load voltage and a pre-established power voltage quadratic function model.
Preferably, the calculation formula of the upward power adjustment amount for the actual maximum load of each of the electrolytic aluminum and the polycrystalline silicon is as follows:
the calculation formula of the downward power regulating quantity with the actually maximum load of each electrolytic aluminum and each polycrystalline silicon is as follows:
in the formula (I), the compound is shown in the specification,
the upward power adjustment for the actual maximum load of the ith electrolytic aluminum and polysilicon;
the downward power adjustment quantity which is the actual maximum load of the ith electrolytic aluminum and the polycrystalline silicon;
the capacity of the load voltage of the ith electrolytic aluminum and the polycrystalline silicon can be adjusted upwards;
the capacity is adjusted downwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon;
the maximum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon;
the minimum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon; a. The i The load voltage first-order coefficient of the ith electrolytic aluminum and the polycrystalline silicon in the power voltage quadratic function model is obtained; b is i Is the load voltage quadratic term coefficient of the ith electrolytic aluminum and the polycrystalline silicon in the power voltage quadratic function model.
Preferably, the upward adjustable capacity of each load voltage is calculated as follows;
the calculation formula of the downward adjustable capacity of each load voltage is as follows:
in the formula (I), the compound is shown in the specification,
the capacity is upward adjustable for the ith electrolytic aluminum and polysilicon load voltage;
the capacity is adjusted downwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon;
the maximum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon;
is the minimum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon.
Preferably, the calculation of the voltage regulation range of the electrolytic aluminum includes:
and calculating the voltage regulation range of the electrolytic aluminum based on the corresponding relation between the load voltage of the electrolytic aluminum and the voltage of the connected high-voltage bus and the regulation range of the reactance equivalent value of the reactor in the production process constraint.
Preferably, the calculation of the voltage regulation range of the polysilicon includes:
calculating the adjusting range of the load power of the polycrystalline silicon according to the corresponding relation between the heat for maintaining the endothermic reaction and the load power of the polycrystalline silicon, the surface temperature adjusting range of the silicon rod in the production process constraint and the flow rate adjusting rate of cooling water;
and calculating the voltage regulation range of the polysilicon according to the regulation range of the polysilicon load power and the corresponding relation between the power and the load.
Based on the same inventive concept, the invention also provides a coordination control system based on electrolytic aluminum and polysilicon load polymerization, which comprises: the system comprises an acquisition module, a calculation module and a distribution module;
the acquisition module is used for acquiring the load voltage of electrolytic aluminum and polycrystalline silicon in the industrial park;
the calculation module is used for obtaining the actual maximum upward power adjustment quantity and the actual maximum downward power adjustment quantity of each load of the electrolytic aluminum and the polycrystalline silicon according to the load voltage quantities of the electrolytic aluminum and the polycrystalline silicon, the voltage adjustment ranges of each electrolytic aluminum and the polycrystalline silicon load which are calculated in advance and a power voltage quadratic function model which is established in advance;
the distribution module is used for distributing the unbalanced power of the industrial park according to the power grid requirement based on the proportion of the actual maximum upward power regulating quantity or the actual maximum downward power regulating quantity between each electrolytic aluminum and each polycrystalline silicon to obtain the load actual power regulating quantity of each electrolytic aluminum and each polycrystalline silicon;
wherein, the voltage regulation range of each electrolytic aluminum and polysilicon load is obtained by utilizing the constraint calculation of the production process; the power voltage quadratic function model is determined according to the relation between the load voltage quantity and the load power of the electrolytic aluminum and the polycrystalline silicon.
Compared with the closest prior art, the invention has the following beneficial effects:
the invention provides a coordination control method and a system based on electrolytic aluminum and polycrystalline silicon load polymerization, which comprises the following steps: collecting the load voltage of electrolytic aluminum and polycrystalline silicon in an industrial park; obtaining the actual maximum upward power regulating quantity and the actual maximum downward power regulating quantity of each load of the electrolytic aluminum and the polycrystalline silicon according to the load voltage quantities of the electrolytic aluminum and the polycrystalline silicon, the voltage regulating ranges of each electrolytic aluminum and the polycrystalline silicon load calculated in advance and a power voltage quadratic function model established in advance; distributing the unbalanced power of the industrial park according to the power grid requirement based on the proportion of the actual maximum upward power regulating quantity or the actual maximum downward power regulating quantity between each electrolytic aluminum and each polycrystalline silicon to obtain the load actual power regulating quantity of each electrolytic aluminum and each polycrystalline silicon; wherein the voltage regulation range of each electrolytic aluminum and polysilicon load is obtained by utilizing the constraint calculation of the production process; the power voltage quadratic function model is determined according to the relation between the load voltage quantity and the load power of the electrolytic aluminum and the polycrystalline silicon; the method and the device evaluate the actual control quantity of the polycrystalline silicon and the electrolytic aluminum in the industrial load, can perform quantitative analysis at the same time, provide corresponding basis for load adjustment, ensure the power balance requirement of a power grid in the process of executing distributed power supply consumption and demand side resource management, and indirectly improve the stability of a power system.
Drawings
FIG. 1 is a schematic flow chart of a coordination control method based on load polymerization of electrolytic aluminum and polysilicon according to the present invention;
FIG. 2 is a flow chart of evaluation of a power distribution area decentralized energy storage optimization scheduling scheme based on an analytic hierarchy process;
FIG. 3 is a schematic diagram of a coordination control system framework based on load polymerization of electrolytic aluminum and polysilicon according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example 1:
the invention provides a coordination control method based on electrolytic aluminum and polysilicon load polymerization, as shown in figure 1, comprising the following steps:
s1: collecting the load voltage of electrolytic aluminum and polycrystalline silicon in an industrial park;
s2: obtaining the actual maximum upward power regulating quantity and the actual maximum downward power regulating quantity of each load of the electrolytic aluminum and the polycrystalline silicon according to the load voltage quantities of the electrolytic aluminum and the polycrystalline silicon, the voltage regulating ranges of each electrolytic aluminum and the polycrystalline silicon load calculated in advance and a power voltage quadratic function model established in advance;
s3: distributing the unbalanced power of the industrial park according to the power grid requirement based on the proportion of the actual maximum upward power regulating quantity or the actual maximum downward power regulating quantity between each electrolytic aluminum and each polycrystalline silicon to obtain the load actual power regulating quantity of each electrolytic aluminum and each polycrystalline silicon;
wherein the voltage regulation range of each electrolytic aluminum and polysilicon load is obtained by utilizing the constraint calculation of the production process; the power voltage quadratic function model is determined according to the relation between the load voltage quantity and the load power of the electrolytic aluminum and the polycrystalline silicon.
In particular, the method comprises the following steps of,
in order to excavate the adjustable potential of the industrial load, the problems of wind and light abandonment of new energy resources and unbalanced supply and demand of a regional power grid need to be solved, and a perfect market mechanism is established to improve the problems, so that the total load adjustment target of the industrial park is effectively distributed, and the specific optimal load adjustment share of each decision unit is obtained. The load power characteristic of each decision unit is solved based on field operation data, the adjustment boundary of the power and the voltage of the load is solved, the total load quantity of electrolytic aluminum and polycrystalline silicon is obtained, and then the adjustable quantity of each load in different states is determined based on bus voltage constraint, as shown in fig. 2.
S1 specifically comprises the following steps: collecting real-time operation data of electrolytic aluminum and polysilicon loads in an industrial park, and assuming that the number of the electrolytic aluminum and the number of the polysilicon loads in the industrial park are N respectively AL 、N PCS The rated voltage of each load is taken as a voltage reference value, and the voltage quantity of each load is U i * (i＝1,2,…,N AL +N PCS )。
S2 specifically comprises the following steps: calculating the voltage regulation range of the electrolytic aluminum and polysilicon loads, wherein the regulation upper limit and the regulation lower limit (4), (5) and (6) of the voltage per unit of the direct current bus are determined based on the adjustable range of the saturable reactor of the electrolytic aluminum loads; polysilicon load-based silicon rod surface temperature T x Determining the adjusting ranges (16) and (17) of the polysilicon load power by the control range (12) and the cooling water flow rate adjusting rate alpha (14), thereby obtaining the variation range (19) of the single-phase voltage per unit of the polysilicon load;
for the electrolytic aluminum load, the load power characteristics are as follows:
wherein, P AL For power of electrolysis of aluminum, V B Is the DC bus voltage of the electrolyzer I B Is direct current of the electrolytic cell, R EC The equivalent resistance of the electrolytic cell in series connection, and E is the equivalent potential of the electrolytic cell.
Electrolytic aluminum DC bus voltage V B Voltage V of high-voltage bus connected with electrolytic aluminum load AL-AH The relationship of (c) is:
in the formula, L SR Is the equivalent value of the saturable reactor, V AL-AH Is the high voltage bus voltage, omega is the voltage angular frequency, k AL Is the transformation ratio of a load voltage regulator for electrolyzing aluminum.
The maximum power regulation range of the electrolytic aluminum load is therefore:
when the saturable reactor is adjusted within the range of
M (m = {1, 2., N) AL ) } change ratio of load of electrolytic aluminum to k AL-m In time, the adjustment range of the direct current bus voltage is as follows:
DC bus voltage per unit value of electrolytic aluminum load
The limiting variation range of (A) is as follows:
in the formula, V BN,m The voltage rating of the direct current bus of the electrolytic cell for the mth electrolytic aluminum,
is the maximum value of the voltage per unit of the direct current bus of the electrolytic cell for the m-th electrolytic aluminum,
is the minimum value of the per unit value of the direct current bus voltage of the electrolytic cell for the m-th electrolytic aluminum.
So that m = {1, 2., N for electrolytic aluminum load AL When the position is right:
in the formula, P AL,m Power of the m-th electrolytic aluminum load, R EC,m The m-th electrolytic cell is connected with an equivalent resistance in series, E m The cell equivalent potential for the m-th electrolytic aluminum, A AL,m 、B AL,m The load voltage secondary term and the load voltage primary term coefficient are respectively.
For a polysilicon load, the load power satisfies the following electrical relationship:
in the formula, P PCS For polysilicon load AC total power, U val For loading polycrystalline silicon with a single-phase voltage, R PCS Is a polysilicon rod single-phase resistor.
The energy conversion relation of the production process of a polycrystalline silicon rod in the delta t time is as follows:
in the formula,. DELTA.Q out1 V represents the amount of heat used to heat the reactant gas, and is given by the gas specific heat capacity formula 1 ·Δt·s 1 ·ρ g ·c·(T x -T g ) Wherein v is 1 、s 1 、ρ g 、c、T g Respectively is the gas inlet rate, the gas inlet area, the density of the mixed gas and the mixed gasThe specific heat capacity and the air inlet temperature are constant; t is x Surface temperature, Δ Q, of the silicon rod out2 And Δ Q out3 Respectively, the heat quantity which sustains the endothermic reaction and which is dissipated through the hearth and the wall of the reduction furnace by thermal radiation
Corresponds to (Δ Q) out2 +ΔQ out3 ) Wherein, eta, K, L, T out The reaction heat absorption ratio, the total heat transfer coefficient of the silicon rod and the mixed gas, the total length of the silicon rod, and the equivalent temperature of the chassis and the furnace wall surface are all constants; r is the radius of the polysilicon rod, and r is regarded as a constant in a short time.
The power characteristic equation of the polysilicon with radius r obtained by equations (9) and (10) is as follows:
in the formula, A, B, C, D, G and H are polysilicon power characteristic fitting coefficients which are constants and are obtained by fitting actual production rated operation data; i is polysilicon load single-phase current;
for the surface temperature T of the silicon rod x The control range is as follows:
when the temperature is less than or equal to 1000 ℃ T x Can ensure production at the temperature of less than or equal to 1100 ℃, and can ensure the production at T x ＝T xN The temperature is the optimum temperature at 1080 ℃; when engaged in regulation, the polysilicon load generally participates in regulating power downward, then
The flow rate of the cooling water is generally adjusted, and if the flow rate adjustment rate of the cooling water is alpha, the following steps are provided:
α min ≤α≤α max (14)
wherein alpha is min ＝90％，α max =100%. At nominal operation, α =100%;
the following equations (9) and (10) can be obtained:
from equations (12) and (15), the adjustment range of the polysilicon load power can be determined as follows:
polysilicon load single phase voltage U val The adjusting range of (2) is as follows:
so for the nth (N = {1, 2., N) PCS }) the variation range of the single-phase voltage per unit value of the polysilicon load is as follows:
in the formula (I), the compound is shown in the specification,
is the maximum value of the voltage per unit of the electrolytic bath direct current bus of the nth polysilicon,
for the n-th polysiliconAnd solving the minimum value of the per unit value of the DC bus voltage of the cell.
Thus, N = {1, 2., N for polysilicon loading PCS }：
In the formula, B PCS,n Is the nth polysilicon load voltage quadratic coefficient. P is PCS,n The nth polysilicon is loaded with ac total power,
for loading the nth polysilicon with a single-phase voltage, R PCS,n Is the single-phase resistance of the nth polysilicon rod.
The actual maximum allowable upward and downward adjustment amounts of each load voltage are respectively as follows:
in the formula:
the capacity is upward adjustable for the ith electrolytic aluminum and polysilicon load voltage;
the capacity is adjusted downwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon;
the maximum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon;
the minimum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon.
Performing polymerization construction on the power voltage quadratic function model, and determining each secondary coefficient;
the total load characteristic of an industrial park is therefore:
in the formula, P Σ The load power of the electrolytic aluminum and the polycrystalline silicon for the industrial park;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon; n is a radical of AL The number of electrolytic aluminum loads in the industrial park; n is a radical of PCS The number of the polysilicon loads in the industrial park; a. The i Is the load voltage first order coefficient of the ith electrolytic aluminum and the polycrystalline silicon; b i Is the load voltage quadratic term coefficient of the ith electrolytic aluminum and the polycrystalline silicon; v BN，i A cell dc bus voltage rating for electrolytic aluminum electrolysis in the ith electrolytic aluminum and polycrystalline silicon; r EC,i The electrolytic bath for the ith electrolytic aluminum and the electrolytic aluminum in the polycrystalline silicon is connected with the equivalent resistance in series; r is PCS,i The resistance is the single-phase resistance of a polysilicon rod in the ith electrolytic aluminum and polysilicon; i represents the total load of the electrolytic aluminum and the polycrystalline load,
for loading the i-th electrolytic aluminum and polysiliconSingle phase voltage.
The actual maximum allowable up and down power regulation capacities of each load are respectively:
in the formula:
the upward power adjustment for the actual maximum load of the ith electrolytic aluminum and polysilicon;
the downward power adjustment quantity which is the actual maximum load of the ith electrolytic aluminum and the polycrystalline silicon;
the capacity can be adjusted upwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the capacity can be adjusted downwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon;
the maximum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon;
the minimum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon; a. The i The load voltage first-order coefficient of the ith electrolytic aluminum and the polycrystalline silicon in the power voltage quadratic function model is obtained; b is i Is the load voltage quadratic term coefficient of the ith electrolytic aluminum and the polycrystalline silicon in the power voltage quadratic function model.
S3 specifically comprises the following steps: and calculating the actual load power regulating quantity of each electrolytic aluminum and polycrystalline silicon based on the actual maximum upward power regulating quantity or downward power regulating quantity ratio between each electrolytic aluminum and polycrystalline silicon.
The actual adjustment amounts of the respective loads are:
in the formula,. DELTA.P Σ The unbalanced power of the industrial park is obtained by subtracting the load power of the electrolytic aluminum and the polycrystalline silicon of the industrial park from the load power required by the power grid; delta P loadi,up Is when Δ P Σ When the power is more than or equal to 0, the power of the ith load is adjusted upwards; delta P loadi,down Is when Δ P Σ When the power is less than or equal to 0, the power of the ith load is adjusted downwards. i is the load of electrolytic aluminum and polysilicon in the industrial park;
when Δ P Σ The maximum value of the downward adjustment power of the ith load is more than or equal to 0;
is when Δ P Σ When the power is less than or equal to 0, the maximum value of the upward adjustment power of the ith load is obtained; n is a radical of AL The number of electrolytic aluminum loads in the industrial park; n is a radical of hydrogen PCS The number of polysilicon loads in the industrial park.
Example 2:
based on the same inventive concept, the invention also provides a coordination control system based on electrolytic aluminum and polysilicon load polymerization, as shown in fig. 3: the system comprises an acquisition module, a calculation module and a distribution module;
the acquisition module is used for acquiring the load voltage of electrolytic aluminum and polycrystalline silicon in the industrial park;
the calculation module is used for obtaining the actually maximum upward power regulating quantity and the actual maximum downward power regulating quantity of each load of the electrolytic aluminum and the polycrystalline silicon according to the load voltage quantity of the electrolytic aluminum and the polycrystalline silicon, the voltage regulating range of each electrolytic aluminum and polycrystalline silicon load which is calculated in advance and a power voltage quadratic function model which is established in advance;
the distribution module is used for distributing the unbalanced power of the industrial park according to the power grid requirement based on the proportion of the actual maximum upward power regulating quantity or the actual maximum downward power regulating quantity between each electrolytic aluminum and each polycrystalline silicon to obtain the load actual power regulating quantity of each electrolytic aluminum and each polycrystalline silicon;
wherein the voltage regulation range of each electrolytic aluminum and polysilicon load is obtained by utilizing the constraint calculation of the production process; the power voltage quadratic function model is determined according to the relation between the load voltage quantity and the load power of the electrolytic aluminum and the polycrystalline silicon.
The distribution module includes: an upward adjustment quantum module and a downward adjustment quantum module;
the upward adjustment quantum module is used for adjusting the actual load power of each electrolytic aluminum and polycrystalline silicon upward based on the proportion of the actual maximum upward power adjustment quantity between each electrolytic aluminum and polycrystalline silicon when the unbalanced power in the industrial park is larger than or equal to a preset value, so as to obtain the upward adjustment quantity of the actual load power of each electrolytic aluminum and polycrystalline silicon;
the downward adjustment quantum module is used for adjusting the actual load power of each electrolytic aluminum and polycrystalline silicon downward based on the proportion of the actual maximum downward power adjustment quantity between each electrolytic aluminum and each polycrystalline silicon when the unbalanced power in the industrial park is smaller than a preset value, so as to obtain the downward adjustment quantity of the actual load power of each electrolytic aluminum and each polycrystalline silicon;
and the unbalanced power in the industrial park is obtained by subtracting the load power of the electrolytic aluminum and the polycrystalline silicon in the industrial park from the load power required by the power grid.
The calculation formula of the upward adjustment quantity of the actual load power of each electrolytic aluminum and polysilicon is as follows:
the calculation formula of the downward adjustment quantity of the load actual power of each electrolytic aluminum and polysilicon is as follows:
in the formula,. DELTA.P Σ Unbalanced power for industrial park; delta P loadi,up Is when Δ P Σ The load actual power of the ith electrolytic aluminum and the polycrystalline silicon is adjusted upwards by an amount which is more than or equal to 0; delta P loadi,down Is when Δ P Σ When the power is less than 0, the load actual power of the ith electrolytic aluminum and the polycrystalline silicon is adjusted downwards; i is the load of electrolytic aluminum and polysilicon in the industrial park;
the upward power adjustment for the actual maximum load of the ith electrolytic aluminum and polysilicon;
the downward power adjustment quantity which is the actual maximum load of the ith electrolytic aluminum and the polycrystalline silicon; n is a radical of AL The number of electrolytic aluminum loads in the industrial park; n is a radical of PCS The number of polysilicon loads in the industrial park.
The power voltage quadratic function model is a quadratic equation determined according to the relationship between the load voltage quantity and the load power of the electrolytic aluminum and the polycrystalline silicon;
the first-order term and the second-order term coefficient of the power voltage quadratic function model are obtained by fitting the voltage and the resistance of electrolytic aluminum and polycrystalline silicon;
the determination of the coefficients of the first term and the second term of the electrolytic aluminum is obtained by fitting the rated value of the direct current bus voltage of the electrolytic cell of the electrolytic aluminum and the equivalent resistance of the electrolytic cell of the electrolytic aluminum in series;
the first term coefficient and the second term coefficient of the polysilicon are determined by fitting the single-phase resistance of the polysilicon rod and the single-phase voltage of the polysilicon load.
The power voltage quadratic function model is calculated as follows:
in the formula, P Σ The load power of the electrolytic aluminum and the polycrystalline silicon for the industrial park;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon; n is a radical of hydrogen AL The number of electrolytic aluminum loads in the industrial park; n is a radical of PCS The number of the polysilicon loads in the industrial park; a. The i Is the load voltage first order coefficient of the ith electrolytic aluminum and the polycrystalline silicon; b is i Is the load voltage quadratic term coefficient of the ith electrolytic aluminum and the polycrystalline silicon;
the calculation formula of the load voltage first-term coefficient of the electrolytic aluminum and the polycrystalline silicon is as follows:
the calculation formula of the load voltage quadratic term coefficient of the electrolytic aluminum and the polycrystalline silicon is as follows:
in the formula, V BN，i A cell dc bus voltage rating for electrolytic aluminum electrolysis in the ith electrolytic aluminum and polycrystalline silicon; r EC,i Equivalent resistance is connected in series with an electrolytic cell for electrolyzing aluminum in the ith electrolytic aluminum and polycrystalline silicon; r PCS,i The resistance is the single-phase resistance of a polysilicon rod in the ith electrolytic aluminum and polysilicon; i represents the total load of the electrolytic aluminum and the polycrystalline load,
a single phase voltage is applied to the ith of the electrolytic aluminum and the polysilicon.
The calculation module comprises: the adjustable capacity calculation submodule and the actual adjustment calculation quantum module are both arranged;
the capacity-adjustable calculation quantum module is used for calculating the upward adjustable capacity and the downward adjustable capacity of the load voltage of each electrolytic aluminum and polycrystalline silicon according to the load voltage quantity of the electrolytic aluminum and the polycrystalline silicon and the voltage adjusting range of each electrolytic aluminum and polycrystalline silicon load calculated in advance;
and the actual regulating quantum module is used for obtaining the actual maximum upward power regulating quantity and the actual maximum downward power regulating quantity of the load of each electrolytic aluminum and polycrystalline silicon according to the upward adjustable capacity and the downward adjustable capacity of the load voltage of each electrolytic aluminum and polycrystalline silicon and a pre-established power voltage quadratic function model.
The calculation formula of the upward power regulating amount with the actually maximum load of each electrolytic aluminum and each polycrystalline silicon is as follows:
the calculation formula of the downward power regulating quantity with the actually maximum load of each electrolytic aluminum and each polycrystalline silicon is as follows:
in the formula (I), the compound is shown in the specification,
the upward power adjustment for the actual maximum load of the ith electrolytic aluminum and polysilicon;
a downward power adjustment for the actual maximum load of the ith electrolytic aluminum and polysilicon;
the capacity can be adjusted upwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the capacity can be adjusted downwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon;
the maximum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon;
the minimum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon; a. The i The load voltage first-order coefficient of the ith electrolytic aluminum and the polycrystalline silicon in the power voltage quadratic function model is obtained; b i Is the load voltage quadratic term coefficient of the ith electrolytic aluminum and the polycrystalline silicon in the power voltage quadratic function model.
The upward adjustable capacity of each load voltage is calculated as follows;
the calculation formula of the downward adjustable capacity of each load voltage is as follows:
in the formula (I), the compound is shown in the specification,
the capacity of the ith electrolytic aluminum and polycrystalline silicon load voltage can be adjusted upwards;
the capacity can be adjusted downwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon;
the maximum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon;
the minimum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon.
The calculation of the voltage regulation range of the electrolytic aluminum comprises the following steps:
and calculating the voltage regulation range of the electrolytic aluminum based on the corresponding relation between the load voltage of the electrolytic aluminum and the voltage of the connected high-voltage bus and the regulation range of the reactance equivalent value of the reactor in the production process constraint.
The calculation of the voltage regulation range of the polysilicon comprises the following steps:
calculating the adjustment range of the load power of the polycrystalline silicon according to the corresponding relation between the heat quantity for maintaining the endothermic reaction and the load power of the polycrystalline silicon, the surface temperature adjustment range of the silicon rod in the production process constraint and the flow rate adjustment rate of cooling water;
and calculating the voltage regulation range of the polycrystalline silicon according to the regulation range of the load power of the polycrystalline silicon and the corresponding relation between the power and the load.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting the protection scope thereof, and although the present invention has been described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that after reading the present invention, they can make various changes, modifications or equivalents to the specific embodiments of the present invention, but these changes, modifications or equivalents are within the protection scope of the appended claims.
Claims (11)
1. A coordination control method based on electrolytic aluminum and polycrystalline silicon load polymerization is characterized by comprising the following steps:
collecting the load voltage of electrolytic aluminum and polycrystalline silicon in an industrial park;
obtaining the actual maximum upward power regulating quantity and the actual maximum downward power regulating quantity of each load of the electrolytic aluminum and the polycrystalline silicon according to the load voltage quantities of the electrolytic aluminum and the polycrystalline silicon, the voltage regulating ranges of each electrolytic aluminum and the polycrystalline silicon load calculated in advance and a power voltage quadratic function model established in advance;
distributing the unbalanced power of the industrial park according to the power grid requirement based on the proportion of the actual maximum upward power regulating quantity or the actual maximum downward power regulating quantity between each electrolytic aluminum and each polycrystalline silicon to obtain the load actual power regulating quantity of each electrolytic aluminum and each polycrystalline silicon;
wherein, the voltage regulation range of each electrolytic aluminum and polysilicon load is obtained by utilizing the constraint calculation of the production process; the power voltage quadratic function model is determined according to the relation between the load voltage quantity and the load power of the electrolytic aluminum and the polycrystalline silicon.
2. The method of claim 1, wherein the distributing the unbalanced power of the industrial park according to the grid demand based on the actual maximum upward power adjustment or downward power adjustment ratio between each of the electrolytic aluminum and the polycrystalline silicon to obtain the actual power adjustment of the load of each of the electrolytic aluminum and the polycrystalline silicon comprises:
when the unbalanced power in the industrial park is larger than or equal to a preset value, upward adjusting the actual load power of each electrolytic aluminum and each polycrystalline silicon based on the proportion of the actual maximum upward power adjustment quantity between each electrolytic aluminum and each polycrystalline silicon to obtain the upward adjustment quantity of the actual load power of each electrolytic aluminum and each polycrystalline silicon;
when the unbalanced power in the industrial park is smaller than a preset value, downward adjustment is carried out on the actual load power of each electrolytic aluminum and each polycrystalline silicon based on the proportion of the actual maximum downward power adjustment quantity between each electrolytic aluminum and each polycrystalline silicon, and the downward adjustment quantity of the actual load power of each electrolytic aluminum and each polycrystalline silicon is obtained;
and the unbalanced power in the industrial park is obtained by subtracting the load power of the electrolytic aluminum and the polycrystalline silicon in the industrial park from the load power required by the power grid.
3. The method of claim 2,
the calculation formula of the upward adjustment quantity of the actual load power of each electrolytic aluminum and polysilicon is as follows:
the calculation formula of the downward adjustment quantity of the load actual power of each electrolytic aluminum and polysilicon is as follows:
in the formula,. DELTA.P Σ Unbalanced power for industrial park; delta P loadi,up Is when Δ P Σ The load actual power of the ith electrolytic aluminum and the polycrystalline silicon is adjusted upwards by an amount which is more than or equal to 0; delta P loadi,down Is when Δ P Σ When the current load actual power of the ith electrolytic aluminum and the polycrystalline silicon is less than 0, the load actual power is downwards adjusted; i is the load of electrolytic aluminum and polysilicon in the industrial park;
the upward power adjustment quantity which is the actual maximum load of the ith electrolytic aluminum and the polycrystalline silicon;
the downward power adjustment quantity which is the actual maximum load of the ith electrolytic aluminum and the polycrystalline silicon; n is a radical of AL The number of electrolytic aluminum loads in the industrial park; n is a radical of PCS The number of the polysilicon loads in the industrial park.
4. The method according to claim 1, wherein the power-voltage quadratic function model is a quadratic equation determined from a relationship between load voltage amounts and load powers according to the electrolytic aluminum and the polycrystalline silicon;
the first term and the second term coefficient of the power voltage quadratic function model are obtained by fitting the voltage and the resistance of electrolytic aluminum and polycrystalline silicon;
the determination of the coefficients of the first term and the second term of the electrolytic aluminum is obtained by fitting the rated value of the direct current bus voltage of the electrolytic cell of the electrolytic aluminum and the equivalent resistance of the electrolytic cell of the electrolytic aluminum in series;
the primary term coefficient and the secondary term coefficient of the polycrystalline silicon are determined by fitting the single-phase resistance of the polycrystalline silicon rod and the single-phase voltage of the polycrystalline silicon load.
5. The method of claim 4,
the calculation formula of the power voltage quadratic function model is as follows:
in the formula, P Σ The load power of the electrolytic aluminum and the polycrystalline silicon for the industrial park;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon; n is a radical of AL The number of electrolytic aluminum loads in the industrial park; n is a radical of PCS The number of the polysilicon loads in the industrial park; a. The i Is the load voltage first order coefficient of the ith electrolytic aluminum and the polycrystalline silicon; b is i Is the load voltage quadratic term coefficient of the ith electrolytic aluminum and the polycrystalline silicon;
the calculation formula of the load voltage first-order term coefficient of the electrolytic aluminum and the polycrystalline silicon is as follows:
the calculation formula of the load voltage quadratic term coefficient of the electrolytic aluminum and the polycrystalline silicon is as follows:
in the formula, V BN，i A cell dc bus voltage rating for electrolytic aluminum electrolysis in the ith electrolytic aluminum and polycrystalline silicon; r is EC,i Equivalent resistance is connected in series with an electrolytic cell for electrolyzing aluminum in the ith electrolytic aluminum and polycrystalline silicon; r PCS,i The resistance is the single-phase resistance of a polysilicon rod in the ith electrolytic aluminum and polysilicon; i represents the total load of the electrolytic aluminum and the polycrystalline load,
a single phase voltage is applied to the ith of the electrolytic aluminum and the polysilicon.
6. The method of claim 1, wherein obtaining the upward power adjustment amount and the downward power adjustment amount of each load of the electrolytic aluminum and the polysilicon with the actual maximum load according to the load voltage amounts of the electrolytic aluminum and the polysilicon, the pre-calculated voltage adjustment ranges of each load of the electrolytic aluminum and the polysilicon, and the pre-established power voltage quadratic function model comprises:
calculating the upward adjustable capacity and the downward adjustable capacity of the load voltage of each electrolytic aluminum and polycrystalline silicon according to the load voltage quantity of the electrolytic aluminum and the polycrystalline silicon and the voltage adjusting range of each electrolytic aluminum and polycrystalline silicon load calculated in advance;
and obtaining the actual maximum upward power regulating quantity and the actual maximum downward power regulating quantity of the load of each electrolytic aluminum and each electrolytic polysilicon according to the upward adjustable capacity and the downward adjustable capacity of each electrolytic aluminum and each electrolytic polysilicon load voltage and a pre-established power voltage quadratic function model.
7. The method of claim 6,
the calculation formula of the upward power regulating amount with the actually maximum load of each electrolytic aluminum and polysilicon is as follows:
the calculation formula of the downward power regulating quantity with the actually maximum load of each electrolytic aluminum and each polycrystalline silicon is as follows:
in the formula (I), the compound is shown in the specification,
upward power adjustment for the actual maximum load of the ith electrolytic aluminum and polysilicon
The downward power adjustment quantity which is the actual maximum load of the ith electrolytic aluminum and the polycrystalline silicon;
the capacity can be adjusted upwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the capacity is adjusted downwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon;
the maximum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon;
the minimum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon; a. The i The load voltage first-order coefficient of the ith electrolytic aluminum and the polycrystalline silicon in the power voltage quadratic function model is obtained;B i is the load voltage quadratic term coefficient of the ith electrolytic aluminum and the polycrystalline silicon in the power voltage quadratic function model.
8. The method of claim 6,
the up-adjustable capacity of each load voltage is calculated as follows;
the calculation formula of the downward adjustable capacity of each load voltage is as follows:
in the formula (I), the compound is shown in the specification,
the capacity is upward adjustable for the ith electrolytic aluminum and polysilicon load voltage;
the capacity can be adjusted downwards for the load voltage of the ith electrolytic aluminum and the polycrystalline silicon;
the load voltage quantity of the ith electrolytic aluminum and the polycrystalline silicon;
the maximum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon;
is the minimum value of the voltage regulation range of the ith electrolytic aluminum and the polycrystalline silicon.
9. The method of claim 1, wherein the calculating of the voltage regulation range of the electrolytic aluminum comprises:
and calculating the voltage regulation range of the electrolytic aluminum based on the corresponding relation between the load voltage of the electrolytic aluminum and the voltage of the connected high-voltage bus and the regulation range of the reactance equivalent value of the reactor in the production process constraint.
10. The method of claim 1, wherein the calculating of the voltage regulation range of the polysilicon comprises:
calculating the adjustment range of the load power of the polycrystalline silicon according to the corresponding relation between the heat quantity for maintaining the endothermic reaction and the load power of the polycrystalline silicon, the surface temperature adjustment range of the silicon rod in the production process constraint and the flow rate adjustment rate of cooling water;
and calculating the voltage regulation range of the polysilicon according to the regulation range of the polysilicon load power and the corresponding relation between the power and the load.
11. A coordinated control system based on electrolytic aluminum and polycrystalline silicon load polymerization is characterized by comprising: the system comprises an acquisition module, a calculation module and a distribution module;
the acquisition module is used for acquiring the load voltage of electrolytic aluminum and polycrystalline silicon in the industrial park;
the calculation module is used for obtaining the actual maximum upward power adjustment quantity and the actual maximum downward power adjustment quantity of each load of the electrolytic aluminum and the polycrystalline silicon according to the load voltage quantities of the electrolytic aluminum and the polycrystalline silicon, the voltage adjustment ranges of each electrolytic aluminum and the polycrystalline silicon load which are calculated in advance and a power voltage quadratic function model which is established in advance;
the distribution module is used for distributing the unbalanced power of the industrial park according to the power grid requirement based on the proportion of the actual maximum upward power regulating quantity or the actual maximum downward power regulating quantity between each electrolytic aluminum and each polycrystalline silicon to obtain the actual load power regulating quantity of each electrolytic aluminum and each polycrystalline silicon;
wherein, the voltage regulation range of each electrolytic aluminum and polysilicon load is obtained by utilizing the constraint calculation of the production process; the power voltage quadratic function model is determined according to the relation between the load voltage quantity and the load power of the electrolytic aluminum and the polycrystalline silicon.
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