Virtual power plant auxiliary peak shaving power distribution method based on transformer area regulation resource information

Abstract

The application provides a virtual power plant auxiliary peak shaving power distribution method based on transformer area adjustable resource information, which comprises the following steps: step 1: first, a transformer area adjustable load resource information array is established to record the adjustable and interruptible load information downstream of the transformer area; step 2: then, a transformer area adjustable energy resource information array is established to record the adjustable distributed power and energy storage information downstream of the transformer area; step 3: secondly, according to the load adjustment plan and the power generation adjustment plan released by the auxiliary service market, the load adjustment total amount and the power generation adjustment total amount of each transformer area are distributed and calculated; step 4: finally, according to the load adjustment total amount and the power generation adjustment total amount of the transformer area, the adjustable load resource and the distributed energy resource in the transformer area are distributed and calculated in terms of the adjustable load amount and the adjustable power generation amount; the application of the technical scheme can realize simple and accurate calculation of the adjustable load and power generation plan distribution of the distribution transformer area in the virtual power plant, and provide strong support for the auxiliary peak shaving of the power grid.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of virtual power plant auxiliary peak shaving technology in power distribution network, and particularly relates to a virtual power plant auxiliary peak shaving power distribution method based on transformer area regulation resource information. BACKGROUND

[0002] At present, with the rapid development of new power systems, a large number of distributed power sources, energy storage and adjustable loads are connected to the power distribution network. In the environment of the vigorous development of the energy internet, a large number of producers and consumers appear in the energy system, and the randomness and volatility of a large number of distributed resources increase the complexity and control difficulty of the power grid, which has a significant impact on the safe and reliable operation of the power grid. The main manifestations are as follows:

[0003] (1) The types of distributed energy are diverse, the access amount is large, and the fluctuation is large. A large number of distributed power sources such as large and medium-sized photovoltaic power stations, small household photovoltaic power stations, large and medium-sized wind turbines, energy storage power stations, small energy storage, charging piles, mobile energy storage vehicles, AC-DC hybrid microgrids and diesel generators are connected to the power grid. A large number of high-voltage, medium-voltage and low-voltage distributed power sources are connected to the power grid, and the power fluctuation is large.

[0004] (2) The types of loads are diverse and the characteristics are diverse. A large number of industrial loads, commercial loads, residential loads, enterprise and institution loads, demonstration park loads, interruptible loads, adjustable loads, sensitive loads, lifeline loads and power supply loads are connected to the power grid. The power gap is caused by different load time periods and different power behaviors in peak periods.

[0005] (3) The demand side control is loose and the aggregation force is weak. A large number of distributed energy and loads are connected to the system in the form of "plug and forget", the adjustable potential is not fully tapped, the market means are not fully applied to mobilize the enthusiasm of users to participate in the aggregation regulation, and the combined force is not effectively formed.

[0006] By aggregating various adjustable loads and energy through the virtual power plant and participating in the peak shaving and frequency modulation of the power grid in the form of a whole, one of the measures to solve the above problems is achieved. However, due to the diversity of distributed power sources and adjustable loads, the dispatching range of the power distribution network is different from the jurisdiction range of the virtual power plant, and the calculation of the regulation amount of the adjustable distributed energy and loads becomes one of the problems, so it is of great practical significance to study the virtual power plant auxiliary peak shaving power distribution method. SUMMARY

[0007] Therefore, the present application aims to provide a virtual power plant auxiliary peak shaving power distribution method based on transformer area regulation resource information, which can simply and accurately calculate the distribution of the adjustable load and power generation plan of the power distribution transformer area in the virtual power plant, can calculate the distribution of the adjustable load and distributed energy regulation power in the transformer area, and can provide strong support for power grid auxiliary peak shaving.

[0008] To achieve the above object, the application adopts the following technical scheme: a virtual power plant auxiliary peak shaving power distribution method based on transformer area regulation resource information, which comprises the following steps:

[0009] Step 1: First, establish a transformer area adjustable load resource information array to record the adjustable and interruptible load information downstream of the transformer area;

[0010] Step 2: Then, establish a transformer area adjustable energy resource information array to record the adjustable distributed power and energy storage information downstream of the transformer area;

[0011] Step 3: Next, according to the load regulation plan and power generation regulation plan published by the auxiliary service market, the total load regulation amount and the total power generation regulation amount of each transformer area are calculated;

[0012] Step 4: Finally, according to the total load regulation amount and the total power generation regulation amount of the transformer area, the adjustable load resources and distributed energy resources in the transformer area are distributed and calculated for the load regulation amount and the power generation regulation amount.

[0013] In a preferred embodiment, step 1 establishes a transformer area adjustable load resource information array SLRM to record all the adjustable and interruptible load resource information downstream of the transformer area in the virtual power plant management area, specifically:

[0014]

[0015] In the formula, each row is the adjustable load information contained in a transformer area, LR ij represents the information of the jth adjustable load contained in the ith transformer area, i=1,2,…,n, j=1,2,…,m, m is the maximum value of the number of adjustable loads contained in the transformer area in the area managed by the virtual power plant, n is the total number of transformer areas in the area managed by the virtual power plant; if LR ij does not exist, use -1 to represent;

[0016] LR ij =[lm ij,1 ,lm ij,2 ,lm ij,3 ,lm ij,4 ,lm ij,5 ,lm ij,6 ,lm ij,7 ]

[0017] In the formula, lm ij,1 is the unique identification number of the adjustable load; lm ij,2 is the type of the adjustable load, 1 represents air conditioner, 2 represents water heater, 3 represents charging energy storage, and 4 represents other adjustable load; lm ij,3 is the maximum power consumption of the adjustable load, unit: kW; lm ij,4is the minimum power of the adjustable load, in kW; lm ij,5 is the planned adjustment power of the adjustable load, in kW, positive value represents load increase power, negative value represents load reduction power; lm ij,6 is the adjustment start time, in day-hour: minute: second; lm ij,7 is the adjustment end time, in day-hour: minute: second.

[0018] In a preferred embodiment, the establishment of the substation adjustable energy resource information array SERM record in step 2 contains all the adjustable distributed power and energy storage information downstream of the virtual power plant management area, specifically:

[0019]

[0020] In the formula, each row is the adjustable distributed energy information contained in a substation, ER ik represents the information of the kth adjustable energy contained in the ith substation, i=1,2,…,n, k=1,2,…,h, h is the maximum value of the number of adjustable energy contained in the substation in the virtual power plant management area, n is the total number of substations in the virtual power plant management area; if ER ik does not exist, use -1 to represent;

[0021] ER ik =[em ik,1 ,em ik,2 ,em ik,3 ,em ik,4 ,em ik,5 ,em ik,6 ,em ik,7 ]

[0022] In the formula, em ik,1 is the unique identification number of the adjustable energy; em ik,2 is the type of adjustable energy, 1 represents distributed photovoltaic, 2 represents fan, 3 represents discharge energy storage, 4 represents diesel engine, and 5 represents other adjustable energy; em ik,3 is the maximum discharge power of the adjustable energy, in kW; em ik,4 is the minimum discharge power of the adjustable energy, in kW; em ik,5 is the planned adjustment power of the adjustable energy, in kW, positive value represents power generation increase function, negative value represents power generation reduction power; em ik,6 is the adjustment start time, in day-hour: minute: second; em ik,7 is the adjustment end time, in day-hour: minute: second.

[0023] In a preferred embodiment, the step 3 of distributing the total load adjustment and the total generation adjustment of each substation according to the load adjustment plan and the generation adjustment plan published by the ancillary service market specifically comprises:

[0024] (1) Establishing a load peak shaving demand matrix LPDM to describe the load peak shaving demand of the virtual power plant in response to the ancillary service market in a time period, specifically:

[0025] LPDM = [LP1, LP2, LP3]

[0026] In the formula, LP1 is the total power demand of the virtual power plant in response to the ancillary service market in a time period, with the unit of kW, and a positive value represents an increase in load power and a negative value represents a decrease in load power; LP2 is the start time of the peak shaving demand, with the unit of day-hour: minute: second; and LP3 is the end time of the peak shaving demand, with the unit of day-hour: minute: second.

[0027] Establishing a generation peak shaving demand matrix GPDM to describe the generation peak shaving demand of the virtual power plant in response to the ancillary service market in a time period, specifically:

[0028] GPDM = [GP1, GP2, GP3]

[0029] In the formula, GP1 is the total power demand of the virtual power plant in response to the ancillary service market in a time period, with the unit of kW, and a positive value represents an increase in generation power and a negative value represents a decrease in generation power; GP2 is the start time of the peak shaving demand, with the unit of day-hour: minute: second; and GP3 is the end time of the peak shaving demand, with the unit of day-hour: minute: second.

[0030] (2) Establishing a total adjustable load matrix TALM of the distribution network substation to describe the total adjustable load power of all substations in a time period, specifically:

[0031] TALM = [TL1, TL2, …, TL i ,…, TL n ]

[0032]

[0033] LT ij = lm ij,3 -lm ij,4 (LR ij ≠-1)

[0034] In the formula, TL i is the total adjustable load power of the i-th substation, with the unit of kW; CP i1 is the rated power of the distribution transformer of the i-th substation, with the unit of kW; and LT ijPij is the adjustable power of the jth adjustable load in the ith substation, unit: kW, j = 1, 2, …, m; min[] is the minimum value operator;

[0035] The adjustable generation total array TAGM is established to describe the total generation power of all adjustable energy in all substations in a time period, specifically:

[0036] TAGM = [TG1, TG2, …, TG i ,…, TG n ]

[0037]

[0038] GT ik = em ik,3 -em ik,4 (ER ik ≠-1)

[0039] In the formula, TG i is the total adjustable generation power of all adjustable energy in the ith substation, unit: kW; CP i1 is the rated power of the distribution transformer in the ith substation, unit: kW; GT ik is the adjustable generation power of the kth adjustable energy in the ith substation, unit: kW, k = 1, 2, …, h; min[] is the minimum value operator;

[0040] (3) The planned load adjustment distribution array SPLM is established to describe the total planned load adjustment power of all substations in a time period, specifically:

[0041] SPLM = [SL1, SL2, …, SL i ,…, SL n ]

[0042]

[0043] In the formula, SL i is the planned load adjustment power of the ith substation in response to the peak regulation demand, unit: kW, positive value represents load increase power, and negative value represents load reduction power;

[0044] The planned generation adjustment distribution array SPGM is established to describe the total planned generation adjustment power of all substations in a time period, specifically:

[0045] SPGM = [SG1, SG2, …, SG i ,…, SG n ]

[0046]

[0047] SGi = SGi-1 + SGi-1 i SGi is the planned adjustment power of the i-th substation for responding to the peak demand, unit: kW, positive value represents power generation increase, negative value represents power generation reduction.

[0048] In a preferred embodiment, step 4 is the distribution calculation of the adjustable load quantity and the adjustable power generation quantity of the adjustable load resource and the distributed energy resource in the substation according to the total load adjustment quantity and the total power generation adjustment quantity of the substation, specifically:

[0049] (1) determining the planned adjustment power, adjustment start time and adjustment end time of each adjustable load in each substation in the substation adjustable load resource information array SLRM;

[0050]

[0051]

[0052] (2) determining the planned adjustment power, adjustment start time and adjustment end time of each adjustable energy in each substation in the substation adjustable energy resource information array SERM;

[0053]

[0054]

[0055] Finally, based on the planned adjustment quantity and the adjustment time of each load and energy in the substation adjustable load resource information array SLRM and the substation adjustable energy resource information array SERM, the adjustable load and energy resource in the substation are remotely adjusted through the fusion terminal, and the virtual power plant auxiliary peak shaving is realized.

[0056] Compared with the prior art, the present application has the following beneficial effects: firstly, the substation adjustable load resource information array is established to record the adjustable and interruptible load information downstream of the substation. Then the substation adjustable energy resource information array is established to record the adjustable distributed power and energy storage and other energy information downstream of the substation. Secondly, according to the load adjustment plan and the power generation adjustment plan published by the auxiliary service market, the total load adjustment quantity and the total power generation adjustment quantity of each substation are distributed and calculated. Finally, according to the total load adjustment quantity and the total power generation adjustment quantity of the substation, the distribution calculation of the adjustable load quantity and the adjustable power generation quantity of the adjustable load resource and the distributed energy resource in the substation is carried out. This method can simply and accurately calculate the distribution of the adjustable load and power generation plan of the distribution substation in the virtual power plant, and can calculate the adjustable load and distributed energy adjustment power distribution in the substation, which provides strong support for the auxiliary peak shaving of the power grid. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 A typical distribution network feeder diagram for a preferred embodiment of the present application. DETAILED DESCRIPTION

[0058] The present application is further described in the detailed description that follows, in connection with the accompanying drawings and examples.

[0059] It should be noted that the following detailed description is intended to provide further description of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0060] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application; as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0061] The virtual power plant auxiliary peak shaving power distribution method based on the substation adjustment resource information, the method comprises the following steps:

[0062] Step 1: First, establish a substation adjustable load resource information array to record the adjustable and interruptible load information downstream of the substation;

[0063] Step 2: Then establish a substation adjustable energy resource information array to record the adjustable distributed power, energy storage and other energy information downstream of the substation;

[0064] Step 3: Secondly, according to the load adjustment plan and power generation adjustment plan issued by the auxiliary service market, the total load adjustment and total power generation adjustment of each substation are calculated;

[0065] Step 4: Finally, according to the total load adjustment and total power generation adjustment of the substation, the adjustable load resources and distributed energy resources in the substation are distributed and calculated for the load adjustment amount and the power generation adjustment amount.

[0066] Step 1 establishes a substation adjustable load resource information array SLRM to record all the adjustable and interruptible load resource information downstream of the virtual power plant management area, specifically:

[0067]

[0068] In the formula, each row is the adjustable load information contained in a substation, LR ijThis represents the information of the j-th adjustable load contained in the i-th transformer area, where i = 1, 2, ..., n, j = 1, 2, ..., m, m is the maximum number of adjustable loads contained in the transformer areas within the virtual power plant's managed area, and n is the total number of transformer areas within the virtual power plant's managed area; if LR ij If it does not exist, use -1 to represent it;

[0069] LR ij =[lm ij,1 ,lm ij,2 ,lm ij,3 ,lm ij,4 ,lm ij,5 ,lm ij,6 ,lm ij,7 ]

[0070] In the formula, lm ij,1 A unique identifier for adjustable loads; lm ij,2 For adjustable load types, 1 represents air conditioning, 2 represents water heater, 3 represents charging energy storage, and 4 represents other adjustable loads; 1m ij,3 The maximum power consumption of the adjustable load, measured in kW; lm ij,4 The minimum electrical power required for an adjustable load, measured in kW; lm ij,5 This refers to the planned adjustment power of the adjustable load, measured in kW. A positive value indicates an increase in load power, while a negative value indicates a decrease in load power. (lm) ij,6 To adjust the start time, the unit is day-hour:minute:second; lm ij,7 To adjust the end time, the unit is day-hour:minute:second.

[0071] Step 2 involves establishing a SERM (Self-Regulated Energy Resource Information Array) to record the downstream adjustable distributed power sources and energy storage information of all transformer substations within the virtual power plant management area. Specifically:

[0072]

[0073] In the formula, each row represents the adjustable distributed energy information contained within a single distribution area, ER. ik This represents the information of the k-th adjustable energy source contained in the i-th transformer area, where i = 1, 2, ..., n, k = 1, 2, ..., h, h is the maximum number of adjustable energy sources contained in the transformer areas within the area managed by the virtual power plant, and n is the total number of transformer areas within the area managed by the virtual power plant; if ER ik If it does not exist, use -1 to represent it;

[0074] ER ik =[em ik,1 ,em ik,2 ,em ik,3 ,em ik,4 ,emik,5 ,em ik,6 ,em ik,7 ]

[0075] em ik,1 is the unique identification number of the adjustable energy source;em ik,2 is the type of the adjustable energy source, 1 represents distributed photovoltaic, 2 represents wind turbine, 3 represents discharge energy storage, 4 represents diesel engine, and 5 represents other adjustable energy source;em ik,3 is the maximum discharge power of the adjustable energy source, in units of kW;em ik,4 is the minimum discharge power of the adjustable energy source, in units of kW;em ik,5 is the planned regulation power of the adjustable energy source, in units of kW, a positive value represents power generation increase function, and a negative value represents power generation reduction power;em ik,6 is the regulation start time, in units of day-hour: minute: second;em ik,7 is the regulation end time, in units of day-hour: minute: second.

[0076] The load regulation plan and the power generation regulation plan published by the auxiliary service market in step 3 are used to calculate the total load regulation and the total power generation regulation of each area, which specifically includes:

[0077] (1) A load peak shaving demand array LPDM is established to describe the response of the virtual power plant to the load peak shaving demand published by the auxiliary service market in a time period, which is specifically:

[0078] LPDM = [LP1, LP2, LP3]

[0079] In the formula, LP1 is the total power demand of the virtual power plant responding to the load peak shaving demand published by the auxiliary service market in a time period, in units of kW, a positive value represents load increase power, and a negative value represents load reduction power; LP2 is the peak demand start time, in units of day-hour: minute: second; and LP3 is the peak demand end time, in units of day-hour: minute: second;

[0080] A generation peak shaving demand array GPDM is established to describe the response of the virtual power plant to the generation peak shaving demand published by the auxiliary service market in a time period, which is specifically:

[0081] GPDM = [GP1, GP2, GP3]

[0082] In the formula, GP1 is the total power demand of the virtual power plant responding to the generation plan published by the auxiliary service market in a time period, in units of kW, a positive value represents power generation increase power, and a negative value represents power generation reduction power; GP2 is the peak demand start time, in units of day-hour: minute: second; and GP3 is the peak demand end time, in units of day-hour: minute: second;

[0083] (2) Establish the total adjustable load matrix TALM of the distribution network area to describe the total power of all adjustable loads in a time period, specifically:

[0084] TALM = [TL1, TL2, …, TL i ,…,TL n ]

[0085]

[0086] LT ij =lm ij,3 -lm ij,4 (LR ij ≠-1)

[0087] In the formula, TL i is the total power of all adjustable loads of the i-th area, with the unit of kW; CP i1 is the rated power of the distribution transformer of the i-th area, with the unit of kW; LT ij is the adjustable power of the j-th adjustable load in the i-th area, with the unit of kW, j = 1, 2, …, m; min[] is the minimum value operator;

[0088] Establish the total adjustable generation matrix TAGM of the distribution network area to describe the total power of all adjustable energy generation in a time period, specifically:

[0089] TAGM = [TG1, TG2, …, TG i ,…,TG n ]

[0090]

[0091] GT ik =em ik,3 -em ik,4 (ER ik ≠-1)

[0092] In the formula, TG i is the total power of all adjustable energy generation of the i-th area, with the unit of kW; CP i1 is the rated power of the distribution transformer of the i-th area, with the unit of kW; GT ik is the adjustable power of the k-th adjustable energy generation in the i-th area, with the unit of kW, k = 1, 2, …, h; min[] is the minimum value operator;

[0093] (3) Establish the planned adjustable load distribution matrix SPLM of the distribution network area to describe the total power of all planned adjustable loads distributed in a time period to respond to the peak shaving demand, specifically:

[0094] SPLM = [SL1, SL2, …, SL i ,…, SL n ]

[0095]

[0096] wherein, SL i is the planned regulation load power of the i-th substation for responding to the peak regulation demand, unit: kW, positive value represents load increase power, negative value represents load reduction power;

[0097] The distribution network substation planned regulation generation distribution array SPGM is established to describe the total amount of planned regulation generation power of all substation for responding to the peak regulation demand in a time period, specifically:

[0098] SPGM = [SG1, SG2, …, SG i ,…, SG n ]

[0099]

[0100] wherein, SG i is the planned regulation generation power of the i-th substation for responding to the peak regulation demand, unit: kW, positive value represents generation increase power, negative value represents generation reduction power.

[0101] Step 4: According to the total amount of load regulation and the total amount of generation regulation of the substation, the distribution calculation of the adjustable load resource and the distributed energy resource in the substation is carried out, specifically:

[0102] (1) Determine the planned regulation power, regulation start time and regulation end time of each adjustable load in each substation in the substation adjustable load resource information array SLRM;

[0103]

[0104]

[0105] (2) Determine the planned regulation power, regulation start time and regulation end time of each adjustable energy in each substation in the substation adjustable energy resource information array SERM;

[0106]

[0107]

[0108] Finally, based on the planned adjustment amount and adjustment time of each load and energy in the adjustable load resource information array (SLRM) and adjustable energy resource information array (SERM) of the distribution area, the adjustable load and energy resources in the distribution area are remotely adjusted through the fusion terminal to realize virtual power plant auxiliary peak shaving.

[0109] like Figure 1 The power distribution network shown is as follows: #Bus1 is the 10kV busbar of the substation; S1 is the outgoing switch of the substation; T1 and T2 are distribution transformers with a rated power of 400kW; G1 and G2 are adjustable photovoltaic power sources; F1 and F2 are adjustable wind turbine power sources; C1 and C2 are adjustable energy storage power sources; K1, K2, and K3 are adjustable air conditioning loads; and L1 and L2 are adjustable heat loads. The parameters of each adjustable load and distributed power source are shown in the figure. The peak load demand of the ancillary service market responding to the virtual power plant is 200kW, starting at 2:10:00 on the 7th and ending at 3:10:00 on the 7th; the peak generation demand is 360kW, starting at 14:00:00 on the 7th and ending at 15:00:00 on the 7th.

[0110] Specifically, the establishment of the adjustable load resource information array (SLRM) for the distribution area is as follows:

[0111]

[0112] LR 11 =[K1,1,64,12,lm 11,5 ,lm 11,6 ,lm 11,7 ]

[0113] LR 12 =[L1,2,124,48,lm] 12,5 ,lm 12,6 ,lm 12,7 ]

[0114] LR 13 =[K2,1,89,32,lm] 13,5 ,lm 13,6 ,lm 13,7 ]

[0115] LR 21 =[K3,1,75,31,lm] 21,5 ,lm 21,6 ,lm 21,7 ]

[0116] LR 22 =[L2,2,104,68,lm] 22,5 ,lm 22,6 ,lm 22,7 ]

[0117] LR 23 = -1

[0118] The adjustable energy resource information array SERM of the transformer area is established as:

[0119]

[0120] ER 11 = [G1,1,126,0,em 11,5 ,em 11,6 ,em 11,7 ]

[0121] ER 12 = [F1,2,152,0,em 12,5 ,em 12,6 ,em 12,7 ]

[0122] ER 13 = [C1,3,82,0,em 13,5 ,em 13,6 ,em 13,7 ]

[0123] ER 21 = [G2,1,114,0,em 21,5 ,em 21,6 ,em 21,7 ]

[0124] ER 22 = [F2,2,133,0,em 22,5 ,em 22,6 ,em 22,7 ]

[0125] ER 23 = [C2,3,54,0,em 23,5 ,em 23,6 ,em 23,7 ]

[0126] The load peak shaving demand array LPDM is established as:

[0127] LPDM = [200,7-2:10:00,7-3:10:00] The generation peak shaving demand array GPDM is established as:

[0128] GPDM = [360,7-14:00:00,7-15:00:00] The total adjustable load array TALM of the distribution network transformer area is established as:

[0129] TALM = [185,80]

[0130] The total adjustable generation array TAGM of the distribution network area is established as:

[0131] TAGM = [360, 301]

[0132] The planned load distribution array SPLM of the distribution network area is established as:

[0133] SPLM = [139.6, 60.4]

[0134] The planned generation distribution array SPGM of the distribution network area is established as:

[0135] SPGM = [196.1, 163.9]

[0136] Each element in the adjustable load resource information array SLMR of the area is:

[0137]

[0138] LR 11 = [K1, 1, 64, 12, 39.2, 7-2:10:00, 7-3:10:00]

[0139] LR 12 = [L1, 2, 124, 48, 57.3, 7-2:10:00, 7-3:10:00]

[0140] LR 13 = [K2, 1, 89, 32, 43.1, 7-2:10:00, 7-3:10:00]

[0141] LR 21 = [K3, 1, 75, 31, 33.22, 7-2:10:00, 7-3:10:00]

[0142] LR 22 = [L2, 2, 104, 68, 27.18, 7-2:10:00, 7-3:10:00]

[0143] LR 23 = -1

[0144] Each element in the adjustable energy resource information array SERM of the area is:

[0145]

[0146] ER 11 = [G1, 1, 126, 0, 68.6, 7-14:00:00, 7-15:00:00]

[0147] ER 12= [F1, 2, 152, 0, 82.8, 7-14:00:00, 7-15:00:00]

[0148] ER 13 = [C1, 3, 82, 0, 44.7, 7-14:00:00, 7-15:00:00]

[0149] ER 21 = [G2, 1, 114, 0, 62.1, 7-14:00:00, 7-15:00:00]

[0150] ER 22 = [F2, 2, 133, 0, 72.4, 7-14:00:00, 7-15:00:00]

[0151] ER 23 = [C2, 3, 54, 0, 29.4, 7-14:00:00, 7-15:00:00]

[0152] Based on the planned adjustment amount and adjustment time of each load and energy in the transformer area adjustable load resource information array SLRM and transformer area adjustable energy resource information array SERM, the remote adjustment of the adjustable load and energy resources in the transformer area is carried out through the fusion terminal, and the virtual power plant auxiliary peak shaving is realized.

Claims

1. A virtual power plant auxiliary peak shaving power distribution method based on substation adjustment resource information, characterized in that: The method comprises the following steps: Step 1: First, establish the substation adjustable load resource information array record downstream of the substation adjustable and interruptible load information; Step 2: Then establish the substation adjustable energy resource information array record downstream of the substation adjustable distributed power, energy storage information; Step 3: Secondly, according to the load adjustment plan and power generation adjustment plan released by the auxiliary service market, the total load adjustment and the total power generation adjustment of each substation are calculated; Step 4: Finally, according to the total load adjustment and the total power generation adjustment of the substation, the adjustable load resources and distributed energy resources in the substation are calculated.

2. The virtual power plant auxiliary peak shaving power distribution method based on substation adjustment resource information according to claim 1, characterized in that: Step 1 of establishing the substation adjustable load resource information array SLRM records all the downstream adjustable and interruptible load resource information in the virtual power plant management area, specifically: In the formula, each row is the adjustable load information contained in a substation, LR ij represents the information of the jth adjustable load contained in the ith substation, i = 1, 2, …, n, j = 1, 2, …, m, m is the maximum value of the number of adjustable loads contained in the substations in the region managed by the virtual power plant, n is the total number of substations in the region managed by the virtual power plant; if LR ij does not exist, -1 is represented. LR ij = [lm ij,1 , lm ij,2 , lm ij,3 , lm ij,4 , lm ij,5 , lm ij,6 , lm ij,7 ] In the formula, lm ij,1 is the unique identifier of the adjustable load; lm ij,2 is the type of the adjustable load, 1 represents air conditioning, 2 represents water heater, 3 represents charging energy storage, and 4 represents other adjustable load; lm ij,3 is the maximum power consumption of the adjustable load, in units of kW; lm ij,4 is the minimum power consumption of the adjustable load, in units of kW; lm ij,5 is the planned adjustment power of the adjustable load, in units of kW, a positive value represents load increase power, and a negative value represents load reduction power; lm ij,6 is the adjustment start time, in units of day-hour: minute: second; lm ij,7 is the adjustment end time, in units of day-hour: minute: second.

3. The virtual power plant auxiliary peak shaving power distribution method based on substation adjustment resource information according to claim 1, characterized in that: Step 2 of establishing the substation adjustable energy resource information array SERM records all the downstream adjustable distributed power and energy storage information in the virtual power plant management area, specifically: In the formula, each row is the adjustable distributed energy information contained in a substation, ER ik represents the information of the kth adjustable energy contained in the ith substation, i = 1, 2, …, n, k = 1, 2, …, h, h is the maximum value of the number of adjustable energies contained in the substations in the region managed by the virtual power plant, n is the total number of substations in the region managed by the virtual power plant; if ER ik does not exist, -1 is represented. ER ik = [em ik,1 , em ik,2 , em ik,3 , em ik,4 , em ik,5 , em ik,6 , em ik,7 ] em ik,1 is the unique identification number of the adjustable energy source;em ik,2 is the type of the adjustable energy source, 1 represents distributed photovoltaic, 2 represents wind turbine, 3 represents discharge energy storage, 4 represents diesel engine, 5 represents other adjustable energy source;em ik,3 is the maximum discharge power of the adjustable energy source, unit: kW;em ik,4 is the minimum discharge power of the adjustable energy source, unit: kW;em ik,5 is the planned regulation power of the adjustable energy source, unit: kW, positive value represents power generation increase function, negative value represents power generation reduction function;em ik,6 is the regulation start time, unit: day-hour: minute: second;em ik,7 is the regulation end time, unit: day-hour: minute: second.

4. The virtual power plant auxiliary peak shaving power distribution method based on substation adjustment resource information according to claim 1, characterized in that: Step 3 of calculating the total load adjustment and the total power generation adjustment of each substation according to the load adjustment plan and the power generation adjustment plan released by the auxiliary service market specifically includes: (1) Establishing the load peak demand array LPDM to describe the load peak demand of the virtual power plant responding to the auxiliary service market in a time period, specifically: LPDM = [LP1, LP2, LP3] In the formula, LP1 is the total power demand of the virtual power plant responding to the auxiliary service market in a time period, with a unit of kW, a positive value indicating an increase in load power and a negative value indicating a decrease in load power; LP2 is the start time of the peak demand, with a unit of day-hour: minute: second; and LP3 is the end time of the peak demand, with a unit of day-hour: minute: second; Establishing the power generation peak demand array GPDM to describe the power generation peak demand of the virtual power plant responding to the auxiliary service market in a time period, specifically: GPDM = [GP1, GP2, GP3] In the formula, GP1 is the total power demand of the virtual power plant responding to the auxiliary service market in a time period, with a unit of kW, a positive value indicating an increase in power generation and a negative value indicating a decrease in power generation; GP2 is the start time of the peak demand, with a unit of day-hour: minute: second; and GP3 is the end time of the peak demand, with a unit of day-hour: minute: second; (2) Establishing the total adjustable load amount array TALM of the distribution network substation to describe the total amount of adjustable load power of all substations in a time period, specifically: TALM = [TL1, TL2,..., TL i ,…,TL n ] LT ij = lm ij,3 - lm ij,4 (LR ij ≠ -1) TL = ∑LTj, i = 1, 2, …, n i TL = ∑LTj, i = 1, 2, …, n i1 TL = ∑LTj, i = 1, 2, …, n ij TL = ∑LTj, i = 1, 2, …, n Establishing the total adjustable power generation amount array TAGM of the distribution network substation to describe the total amount of power generation of all adjustable energy resources in a time period, specifically: TAGM = [TG1, TG2,..., TG i ,…,TG n ] GT ik = em ik,3 -em ik,4 (ER ik ≠ -1) In the formula, TG i is the total amount of adjustable power generation of all adjustable energy sources in the i-th station area, with the unit of kW; CP i1 is the rated power of the distribution transformer in the i-th station area, with the unit of kW; GT ik is the adjustable power generation of the k-th adjustable energy source in the i-th station area, with the unit of kW, k = 1, 2, …, h; min[] is the minimum value operator; (3) Establishing the distribution network substation plan regulation load distribution array SPLM to describe the total amount of planned regulation load power distributed by all substations in a time period in response to peak shaving demand, specifically: SPLM = [SL1, SL2,..., SL i ,…,SL n ] In the formula, SL i is the planned regulated load power allocated to the ith substation in response to the peak-shaving demand, in kW, with a positive value indicating an increase in load power and a negative value indicating a decrease in load power; Establishing the distribution network substation plan regulation generation distribution array SPGM to describe the total amount of planned regulation generation power distributed by all substations in a time period in response to peak shaving demand, specifically: SPGM = [SG1, SG2,..., SG i ,…,SG n ] In the formula, SG i is the planned adjustment power of the i-th substation in response to the peak demand, in kW, with a positive value indicating an increase in power generation and a negative value indicating a decrease in power generation.

5. The virtual power plant auxiliary peak shaving power distribution method based on substation regulation resource information according to claim 1, characterized in that: Step 4: According to the total amount of load regulation and the total amount of generation regulation of the substation, the distribution and calculation of the regulation load and the regulation generation of the adjustable load resource and the distributed energy resource in the substation are carried out, specifically: (1) Determine the planned regulation power, regulation start time and regulation end time of each adjustable load in each substation in the substation adjustable load resource information array SLRM; (2) Determine the planned regulation power, regulation start time and regulation end time of each adjustable energy in each substation in the substation adjustable energy resource information array SERM; Finally, based on the planned regulation amount and regulation time of each load and energy in the substation adjustable load resource information array SLRM and the substation adjustable energy resource information array SERM, the adjustable load and energy resources in the substation are remotely regulated through the fusion terminal, and the virtual power plant auxiliary peak shaving is realized.

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