WO2020259307A1 - Method and device for determining available capacity of grid-connected parking lot, and computing apparatus - Google Patents

Method and device for determining available capacity of grid-connected parking lot, and computing apparatus Download PDF

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Publication number
WO2020259307A1
WO2020259307A1 PCT/CN2020/095647 CN2020095647W WO2020259307A1 WO 2020259307 A1 WO2020259307 A1 WO 2020259307A1 CN 2020095647 W CN2020095647 W CN 2020095647W WO 2020259307 A1 WO2020259307 A1 WO 2020259307A1
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reliability index
grid
distribution system
power distribution
capacity
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PCT/CN2020/095647
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French (fr)
Chinese (zh)
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曾博
龚传正
徐富强
刘裕
孙博
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华北电力大学
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/20Design optimisation, verification or simulation

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  • the invention relates to the field of electric power systems, and in particular to a method, device and computing equipment for determining the available capacity of a grid-connected parking lot.
  • PEV plug-in electric vehicles
  • GPL grid-connected parking lot
  • GPL grid-connected parking lot
  • the GPL with a two-way charger can be used as a backup power source, and by extracting energy from the PEV battery, it can provide capacity support for the grid in an emergency. This can reduce the risk of load loss and significantly improve the power supply reliability of the Smart Power Distribution System (SDS).
  • SDS Smart Power Distribution System
  • the present invention proposes a new scheme for determining the available capacity (CV) of the grid-connected parking lot. Under the background of the intelligent power distribution system, the reliability benefit of the GPL can be approximated by the available capacity of the grid-connected parking lot.
  • the embodiments of the present invention provide a method, a device, and a computing device for determining the available capacity of a grid-connected parking lot, in an effort to solve or at least alleviate at least one of the above problems.
  • the method includes: comparing a first reliability index of a first intelligent power distribution system with a second reliability index of a second intelligent power distribution system, the first intelligent power distribution system does not include grid-connected parking lots, so The second smart power distribution system is obtained by adding the grid-connected parking lot to the first smart power distribution system, wherein the second reliability index is calculated according to the following steps: obtain the plug-in electric vehicle User behavior characteristics, the user behavior characteristics including the arrival time and parking time of the plug-in electric vehicle in the grid-connected parking lot, the required charging level when leaving the grid-connected parking lot, and the availability of V2G programs; Based on the user behavior characteristics, determine the charging and discharging time of the plug-in electric vehicle; determine the available power generation of the grid-connected parking lot for each moment of the simulation year;
  • the device for determining the available capacity of a grid-connected parking lot, which is suitable for parking plug-in electric vehicles and satisfies the charging of the plug-in electric vehicles.
  • the device includes: an index comparison unit adapted to compare the first reliability index of the first smart power distribution system with the second reliability index of the second smart power distribution system, and the first smart power distribution system does not Including a grid-connected parking lot, the second smart power distribution system is obtained by adding the grid-connected parking lot to the first smart power distribution system, wherein the index comparison unit further includes an index calculation unit, and the index calculation The unit is adapted to calculate the second reliability index according to the following steps: obtain user behavior characteristics of the plug-in electric vehicle, the user behavior characteristics including the plug-in electric vehicle in the grid-connected parking lot Arrival time and parking time, the required charging level when leaving the grid-connected parking lot, and V2G program availability; based on the user behavior characteristics, determine the charging and discharging time of the plug-in
  • a computing device including: one or more processors; and a memory; one or more programs, wherein one or more programs are stored in the memory and configured to be configured by One or more processors execute, and one or more programs include instructions for executing any one of the methods for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention.
  • a computer-readable storage medium storing one or more programs.
  • the one or more programs include instructions.
  • the computing device executes the Any of the methods for determining the available capacity of the grid-connected parking lot of the embodiment.
  • the solution for determining the available capacity of the grid-connected parking lot can objectively estimate and compare the contribution of the grid-connected parking lot to the capacity of the intelligent power distribution system by determining the available capacity of the grid-connected parking lot.
  • Conventional power generation resources Among them, the randomness of user behavior of plug-in electric vehicles and its potential dependence on externalities are considered.
  • the sequential Monte Carlo simulation method is used to calculate the reliability index, which can completely express the characteristics of the grid-connected parking lot.
  • Fig. 1 shows a schematic diagram of a computing device 100 according to an embodiment of the present invention
  • FIG. 2 shows a flowchart of a method 200 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention
  • Fig. 3 shows a structural block diagram of a device 300 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention.
  • Fig. 1 shows a schematic diagram of a computing device 100 according to an embodiment of the present invention.
  • the computing device 100 in a basic configuration 107, the computing device 100 typically includes a system memory 106 and one or more processors 104.
  • the memory bus 108 may be used for communication between the processor 104 and the system memory 106.
  • the processor 104 may be any type of processor, including but not limited to: a microprocessor ( ⁇ P), a microcontroller ( ⁇ C), a digital information processor (DSP), or any combination thereof.
  • the processor 104 may include one or more levels of cache, such as the first level cache 110 and the second level cache 112, the processor core 114, and the registers 116.
  • the exemplary processor core 114 may include an arithmetic logic unit (ALU), a floating point number unit (FPU), a digital signal processing core (DSP core), or any combination thereof.
  • the example memory controller 118 may be used with the processor 104, or in some implementations, the memory controller 118 may be an internal part of the processor 104.
  • the system memory 106 may be any type of memory, including but not limited to: volatile memory (such as RAM), non-volatile memory (such as ROM, flash memory, etc.), or any combination thereof.
  • the system memory 106 may include an operating system 120, one or more applications 122, and program data 124.
  • the application 122 may be arranged to be executed by one or more processors 104 using program data 124 on an operating system.
  • the computing device 100 may also include an interface bus 140 that facilitates communication from various interface devices (eg, output device 142, peripheral interface 144, and communication device 146) to the basic configuration 102 via the bus/interface controller 130.
  • the example output device 142 includes a graphics processing unit 148 and an audio processing unit 150. They can be configured to facilitate communication with various external devices such as displays or speakers via one or more A/V ports 152 or HDMI interfaces.
  • the example peripheral interface 144 may include a serial interface controller 154 and a parallel interface controller 156, which may be configured to facilitate communication via one or more I/O ports 158 and input devices such as keyboards, mice, pens, etc.
  • the example communication device 146 may include a network controller 160, which may be arranged to facilitate communication with one or more other computing devices 162 via a network communication link via one or more communication ports 164.
  • a network communication link may be an example of a communication medium.
  • the communication medium may generally be embodied as computer readable instructions, data structures, and program modules in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium.
  • a "modulated data signal" can be a signal, one or more of its data set or its change can be done in a way of encoding information in the signal.
  • communication media may include wired media such as a wired network or a dedicated line network, and various wireless media such as sound, radio frequency (RF), microwave, infrared (IR), or other wireless media.
  • RF radio frequency
  • IR infrared
  • the term computer readable media used herein may include both storage media and communication media.
  • the computing device 100 may be implemented as a server, such as a database server, an application server, a WEB server, etc., or may be implemented as a personal computer including a desktop computer and a notebook computer configuration. Of course, the computing device 100 can also be implemented as a small-sized portable (or mobile) electronic device.
  • the computing device 100 can be implemented at least as each component in the device 300 for determining the available capacity of the grid-connected parking lot, and is configured to execute the available capacity of the grid-connected parking lot according to the embodiment of the invention.
  • Determine method 200 the application 122 of the computing device 100 contains multiple instructions for executing the method 200 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention, and the program data 124 may also store the information of the device 300 for determining the available capacity of a grid-connected parking lot. Configuration information, etc.
  • Fig. 2 shows a flowchart of a method 200 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention.
  • the method 200 for determining the available capacity of a grid-connected parking lot is suitable to be executed in the device 300 for determining the available capacity of a grid-connected parking lot, and starts at step S210.
  • the available capacity of the grid-connected parking lot refers to the available capacity of the grid-connected parking lot during the process of plug-in electric vehicles participating in V2G (Vehicle-to-Grid).
  • grid-connected parking lot is suitable for parking plug-in electric vehicles (PEV) and meets the charging and discharging requirements of plug-in electric vehicles.
  • the grid-connected parking lot can charge plug-in electric vehicles and can also receive the discharge of plug-in electric vehicles.
  • the grid-connected parking lot can usually realize the two-way power exchange between the plug-in electric vehicle and the grid under the coordinated control of the grid-connected parking lot operator (GPL operator, GPLO).
  • the plug-in electric vehicle runs G2V (Grid-to-vehicle) mode.
  • the plug-in electric vehicle runs in V2G (Vehicle-to-Grid) mode.
  • step S210 the first reliability index of the first smart power distribution system is calculated, and the first smart power distribution system does not include the grid-connected parking lot.
  • the state duration time sequence of the first smart power distribution system component can be generated to obtain the state duration time sequence of the first smart power distribution system, and determine the first smart power distribution system.
  • the first smart power distribution system component may include power generating units, transformers, dual chargers, and other components, which are not limited in the present invention.
  • the available power generation of the power generation unit for:
  • a sequential Monte Carlo simulation method may be used to calculate the first reliability index of the first intelligent power distribution system.
  • the sequential Monte Carlo simulation method can realize the statistical calculation of reliability indicators by simulating the random process of the operation of the intelligent power distribution system. The calculation process is described below.
  • D(x ij ) represents the duration of the system state x ij
  • f(x ij ) represents the system performance measurement function with the system state as an independent variable
  • I i represents the annual reliability index of the i-th year. It should be noted that when f(x ij ) takes different measurement functions, I i also represent different reliability indicators.
  • step S220 It is also possible to calculate a second reliability index of the second intelligent power distribution system in step S220.
  • the second smart power distribution system can be obtained by adding a grid-connected parking lot to the above-mentioned first smart power distribution system.
  • the sequential Monte Carlo simulation method can be used to calculate the second reliability index of the second intelligent power distribution system.
  • the user behavior characteristics of the plug-in electric vehicle may be acquired first, and the user behavior characteristics may include at least one of the following characteristics: the arrival time of the plug-in electric vehicle in the grid-connected parking lot And parking time The charge level required when the plug-in electric vehicle leaves the grid-connected parking lot And the availability of V2G programs for plug-in electric vehicles
  • the charging and discharging time of the plug-in electric vehicle is determined.
  • the operating policy of the grid-connected parking lot operator can be as follows: when the plug-in electric vehicle PEV reaches the grid-connected parking lot GPL, the plug-in electric vehicle PEV will first be charged until the SOC of its battery reaches a predetermined value, for example, 90% . Then, the PEV will be eligible for V2G operation from now on until its SOC drops to the SOC target (ie, charge level) required by its owner.
  • the available power generation of the grid-connected parking lot and the total available power generation and total load demand of the second intelligent power distribution system can be determined for each moment of the simulation year.
  • the total available power generation of the second intelligent power distribution system at each moment can be determined according to the following formula And total load demand
  • P dg represents the available power generation of the power generation unit (DG)
  • P dt represents the available power generation of the transformer
  • P agc represents the available power generation of the grid-connected parking lot
  • ⁇ D represents the system bus set
  • P ch represents the plug-in type
  • the charging level of electric vehicles To indicate whether the plug-in electric vehicle k'is involved in the binary variable of the grid-connected parking lot at time t,
  • ⁇ CP represents the set of bilateral chargers
  • ⁇ EV represents the set of plug-in electric vehicles.
  • It is a binary variable used to indicate whether the plug-in electric vehicle k'is in a charging state at time t.
  • the arrival time of plug-in electric vehicles k'at the grid-connected parking lot can be determined from Random sampling in. Indicates the time when the SOC of plug-in electric vehicle k'reaches the threshold, which can be calculated according to the following formula:
  • P ch and ⁇ bc respectively represent the rated charging power and working efficiency of the bilateral charger, It is the threshold SoC value used by GPLO for V2G implementation, and is a given (known prior) parameter.
  • the plug-in electric vehicle k' is determined to be the charging demand of the grid-connected parking lot operator
  • I the size of the plug-in electric vehicle k'battery (unit: kWh)
  • SoC charge level
  • the power flow analysis method is used to determine whether the second intelligent power distribution system violates the constraints. And based on the judgment result, calculate the reliability index of the second intelligent power distribution system at this moment. For example, taking the expected value of insufficient power (ENNS) as an example, if the operating constraint is not violated, it indicates that the system is operating normally, and the unsupplied power (ENN) at this moment is 0. If the operating constraint is violated, it indicates that the system is in an emergency state and the optimal load reduction calculation is required. The unsupplied power (ENN) at this moment is among them Indicates that the load demand of bus i at time t is not met.
  • ENNS expected value of insufficient power
  • the annual reliability index for the simulation year based on the reliability index at multiple times.
  • calculate the second reliability index and variance coefficient based on the annual reliability index of each simulation year. Determine whether the variance coefficient meets the termination condition. If not, repeat the steps of obtaining user behavior characteristics, determining the charging and discharging time of plug-in electric vehicles, calculating the annual reliability index of the simulation year, and calculating the second reliability index and the variance coefficient, until the variance coefficient is satisfied Termination condition. Finally, the second reliability index when the termination condition is met is used as the final second reliability index.
  • the termination condition may be ⁇ 0.05.
  • the first reliability index and the second reliability index can be compared. If the first reliability index is less than the second reliability index, the available capacity of the grid-connected parking lot can be considered as zero.
  • the equivalent fixed capacity, or equivalent conventional capacity, or effective carrying capacity can be selected as the available capacity of the grid-connected parking lot.
  • step S230 when the first reliability index is not less than the second reliability index, if the equivalent fixed capacity or equivalent conventional capacity is selected to measure the available capacity of the grid-connected parking lot, then In step S230, the third reliability index of the third intelligent power distribution system is calculated, and the available capacity of the grid-connected parking lot is determined based on the second reliability index and the third reliability index.
  • the third smart power distribution system can be obtained by adding a generator set to the first smart power distribution system.
  • the process of calculating the third reliability index is similar to the process of calculating the first reliability index, and will not be repeated here.
  • the convergence coefficient may be calculated based on the second reliability and the third reliability index. For example, calculate the convergence coefficient ⁇ V-GPL according to the following formula:
  • V-GPL
  • I V is the third reliability index
  • I GPL is the second reliability index
  • the convergence condition may be ⁇ V-GPL ⁇ .
  • the capacity of the generator set is determined based on the first parameter and the second parameter. For example, determine the capacity C bm of the generator set according to the following formula:
  • C bm (C max +C min )/2
  • C max represents the first parameter
  • C min represents the second parameter.
  • C max C rat
  • C min 0
  • C rat is an arbitrarily selected positive value.
  • the process of adjusting the capacity of the generator set based on the second reliability and the third reliability index can be as follows:
  • the first parameter or the second parameter is adjusted according to the current capacity of the generator set, so as to adjust the capacity of the generator set accordingly.
  • the second parameter C min is adjusted according to the following formula to adjust the capacity C bm of the generator set:
  • the available capacity of the grid-connected parking lot is determined according to the capacity of the generator set when the convergence coefficient ⁇ V-GPL meets the convergence condition. That is, according to the capacity of the generator set, the equivalent fixed capacity or equivalent conventional capacity of the generator set is determined as the available capacity of the grid-connected parking lot. For example, determine the equivalent fixed capacity EFC or equivalent conventional capacity ECC of a generator set according to the following formula:
  • EFC/ECC C bm .
  • the second reliability index can be calculated.
  • the fourth reliability index of the intelligent power distribution system, and the available capacity of the grid-connected parking lot is determined based on the first reliability index and the fourth reliability index.
  • the fourth smart power distribution system can be obtained by adding a virtual load to the second smart power distribution system.
  • the process of calculating the fourth reliability index is similar to the process of calculating the first reliability index, and will not be repeated here.
  • the convergence coefficient may be calculated based on the first reliability and the fourth reliability index. For example, calculate the convergence coefficient according to the following formula
  • Is the fourth reliability index, and I base is the first reliability index.
  • the convergence condition can be
  • the steps of adjusting the capacity of the generator set based on the first reliability index and the fourth reliability index, calculating the fourth reliability index, and calculating the convergence coefficient are repeated until the convergence coefficient meets the convergence conditions.
  • the capacity of the virtual load is determined based on the third parameter and the fourth parameter. For example, determine the virtual load capacity D vl according to the following formula:
  • D vl (D max + D min )/2
  • D max represents the third parameter
  • D min represents the fourth parameter.
  • D max D rat
  • D min 0
  • D rat is an arbitrarily selected positive value.
  • the process of adjusting the capacity of the virtual load based on the first reliability index and the fourth reliability index may be as follows:
  • the third parameter or the fourth parameter is adjusted according to the current capacity of the virtual load, so as to adjust the capacity of the virtual load accordingly.
  • the fourth parameter D min is adjusted according to the following formula to adjust the virtual load capacity D vl :
  • the third parameter D max is adjusted according to the following formula, thereby adjusting the virtual load capacity D vl :
  • the effective carrying capacity of the virtual load is determined as the available capacity of the grid-connected parking lot. For example, determine the effective carrying capacity ELCC of the virtual load according to the following formula:
  • the aforementioned reliability indicators may include at least one of the following indicators: load shedding probability PLC, load shedding frequency EFLC, load shedding Duration EDLC, average load shedding duration ADLC, load shedding expected value ELC, system power outage index BPII, system power reduction index BPECI, severity index SI, and insufficient battery expected value EENS.
  • load shedding probability PLC load shedding probability PLC
  • load shedding frequency EFLC load shedding frequency EFLC
  • load EDLC load shedding Duration EDLC
  • average load shedding duration ADLC load shedding expected value ELC
  • system power outage index BPII system power outage index
  • BPECI system power reduction index
  • SI severity index SI
  • insufficient battery expected value EENS Preferably, the expected value of insufficient power EENS can be used to measure the reliability of the system.
  • Fig. 3 shows a structural block diagram of a device 300 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention.
  • the device 300 for determining the available capacity of a grid-connected parking lot includes an index comparison unit 310 and a capacity determination unit 320.
  • the index comparison unit 310 is adapted to compare the first reliability index of the first smart power distribution system with the second reliability index of the second smart power distribution system.
  • the first smart power distribution system does not include grid-connected parking lots and the second smart power distribution system
  • the electrical system is obtained by adding a grid-connected parking lot to the first intelligent power distribution system.
  • the index comparison unit 310 also includes an index calculation unit 311, which is adapted to calculate the second reliability index according to the following steps: obtain the user behavior characteristics of the plug-in electric vehicle, and the user behavior characteristics include the presence of the plug-in electric vehicle. Describe the arrival time and parking time of the grid-connected parking lot, the charging level required when leaving the grid-connected parking lot, and the availability of V2G programs. Then, based on the user's behavior characteristics, the charging and discharging time (ie, charging and discharging time) of the plug-in electric vehicle is determined.
  • the capacity determining unit 320 is adapted to calculate the third reliability index of the third intelligent power distribution system based on the second reliability index and the third reliability index when the first reliability index is not less than the second reliability index To determine the available capacity of the grid-connected parking lot, the third smart power distribution system is obtained by adding a generator set to the first smart power distribution system.
  • the capacity determination unit 320 is further adapted to calculate a fourth reliability index of the fourth intelligent power distribution system based on the first reliability index and the fourth reliability index when the first reliability index is not less than the second reliability index. Indicators to determine the available capacity of the grid-connected parking lot, the fourth intelligent power distribution system is obtained by adding a virtual load to the second intelligent power distribution system.
  • each unit in the device 300 for determining the available capacity of the grid-connected parking lot please refer to the previous description of the method 200 for determining the available capacity of the grid-connected parking lot in conjunction with Figures 1 and 2, which will not be repeated here. .
  • the available capacity determination scheme of the grid-connected parking lot can objectively estimate and compare the contribution of the grid-connected parking lot to the capacity of the intelligent power distribution system by determining the available capacity of the grid-connected parking lot. It serves as a conventional power generation resource in the market. Among them, the randomness of user behavior of plug-in electric vehicles and its potential dependence on externalities are considered. On this basis, the sequential Monte Carlo simulation method is used to calculate the reliability index, which can completely express the characteristics of the grid-connected parking lot.
  • modules or units or components of the device in the example disclosed herein can be arranged in the device as described in this embodiment, or alternatively can be positioned differently from the device in this example In one or more devices.
  • the modules in the foregoing examples can be combined into one module or further divided into multiple sub-modules.
  • modules or units or components in the embodiments can be combined into one module or unit or component, and in addition, they can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and/or processes or units are mutually exclusive, any combination can be used to compare all features disclosed in this specification (including the accompanying claims, abstract and drawings) and any method or methods disclosed in this manner or All the processes or units of the equipment are combined. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.
  • some of the embodiments are described herein as methods or combinations of method elements that can be implemented by a processor of a computer system or by other devices that perform the described functions. Therefore, a processor with the necessary instructions for implementing the method or method element forms a device for implementing the method or method element.
  • the elements described herein of the device embodiments are examples of devices for implementing functions performed by the elements for the purpose of implementing the invention.

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Abstract

Embodiments of the present invention disclose a method for determining the available capacity of a grid-connected parking lot. The method comprises: comparing a first reliability index of a first intelligent power distribution system with a second reliability index of a second intelligent power distribution system; if the first reliability index is not less than the second reliability index, calculating a third reliability index of a third intelligent power distribution system; and determining, on the basis of the second reliability index and the third reliability index, the available capacity of a grid-connected parking lot. The embodiments of the invention further disclose a corresponding device for determining the available capacity of a grid-connected parking lot, a computing apparatus, and a storage medium.

Description

一种并网停车场的可用容量确定方法、装置及计算设备Method, device and computing equipment for determining available capacity of grid-connected parking lot 技术领域Technical field
本发明涉及电力系统领域,特别涉及一种并网停车场的可用容量确定方法、装置及计算设备。The invention relates to the field of electric power systems, and in particular to a method, device and computing equipment for determining the available capacity of a grid-connected parking lot.
背景技术Background technique
随着由电力驱动的电动汽车的迅猛发展,插电式电动汽车(PEV)的能源需求问题受到广泛关注。With the rapid development of electric vehicles driven by electricity, the energy demand of plug-in electric vehicles (PEV) has received widespread attention.
通常地,可以采用类似并网停车场(GPL)的充电基础设施来满足。GPL一般位于人口稠密的地区,并配备了分布式充电点和低功耗充电/放电设施。通过这些设施,PEV用户不仅可以获得所需的车辆充电服务,还可以通过放电PEV电池来向电网提供电能。事实上,由于大多数国产汽车每天的停车时间都超过95%,一辆装有数百辆集成式电动汽车的GPL的总存储容量可作为充电期间的可控负载(即电网对车辆运行模式,G2V),或是电网对地的替代分布式能源(即车辆到电网运行模式,V2G)。正是因为具有这样的双向能力,GPL的出现为未来的能源系统提供了广阔的频谱范围,在运行过程中可以有效利用。因此对GPL的容量进行评估十分重要。Generally, a charging infrastructure similar to a grid-connected parking lot (GPL) can be used to meet the requirements. GPL is generally located in densely populated areas and is equipped with distributed charging points and low-power charging/discharging facilities. Through these facilities, PEV users can not only obtain the required vehicle charging services, but also provide electrical energy to the grid by discharging PEV batteries. In fact, since most domestically-produced cars spend more than 95% of their daily parking time, the total storage capacity of a GPL equipped with hundreds of integrated electric vehicles can be used as a controllable load during charging (that is, the grid-to-vehicle operation mode, G2V), or grid-to-ground alternative distributed energy (ie, vehicle-to-grid operation mode, V2G). It is precisely because of this two-way capability that the emergence of GPL provides a broad spectrum range for future energy systems, which can be effectively used during operation. Therefore, it is very important to evaluate the capacity of the GPL.
现今关于电力系统中GPL的潜在效益研究已经有了非常充分的铺垫工作。然而,在这些研究中,很少有人致力于探索GPL对系统可靠性的影响。在实际应用中,带双向充电器的GPL可以作为备用电源,并通过从PEV电池中提取能量,在紧急情况下为电网提供容量支持。这可以降低负载损失的风险,并显著提高智能配电系统(SDS)的供电可靠性。Nowadays, the research on the potential benefits of GPL in the power system has been very well laid. However, in these studies, few people are devoted to exploring the impact of GPL on system reliability. In practical applications, the GPL with a two-way charger can be used as a backup power source, and by extracting energy from the PEV battery, it can provide capacity support for the grid in an emergency. This can reduce the risk of load loss and significantly improve the power supply reliability of the Smart Power Distribution System (SDS).
鉴于此,GPL可靠性评估问题越来越受到研究者的关注。本发明提出了 一种新的并网停车场的可用容量(CV)确定方案,在智能配电系统的背景下,通过并网停车场的可用容量来近似地估计GPL的可靠性效益。In view of this, the issue of GPL reliability assessment has attracted more and more attention from researchers. The present invention proposes a new scheme for determining the available capacity (CV) of the grid-connected parking lot. Under the background of the intelligent power distribution system, the reliability benefit of the GPL can be approximated by the available capacity of the grid-connected parking lot.
发明内容Summary of the invention
为此,本发明实施例提供了一种并网停车场的可用容量确定方法、装置及计算设备,以力图解决或者至少缓解上面存在的至少一个问题。To this end, the embodiments of the present invention provide a method, a device, and a computing device for determining the available capacity of a grid-connected parking lot, in an effort to solve or at least alleviate at least one of the above problems.
根据本发明实施例的一个方面,提供了一种并网停车场的可用容量确定方法,所述并网停车场适于停放插电式电动汽车,并满足所述插电式电动汽车的充放电需求,所述方法包括:比较第一智能配电系统的第一可靠性指标和第二智能配电系统的第二可靠性指标,所述第一智能配电系统不包括并网停车场,所述第二智能配电系统通过在所述第一智能配电系统中添加所述并网停车场得到,其中所述第二可靠性指标按照以下步骤计算得到:获取所述插电式电动汽车的用户行为特征,所述用户行为特征包括所述插电式电动汽车在所述并网停车场的到达时间和停车时间、离开所述并网停车场时所需的充电水平、以及V2G程序可用性;基于所述用户行为特征,确定所述插电式电动汽车的充电和放电时间;对仿真年的每个时刻,确定并网停车场的可用发电量;确定所述第二智能配电系统的总可用发电量和总负荷需求;采用潮流分析方法,判断第二智能配电系统是否违反约束;基于判断结果,计算所述第二智能配电系统在该时刻的可靠性指标;根据多个时刻的可靠性指标,计算所述仿真年的年度可靠性指标;基于各个仿真年的年度可靠性指标计算所述第二可靠性指标;在第一可靠性指标不小于第二可靠性指标的情况下,计算第三智能配电系统的第三可靠性指标,并基于第二可靠性指标和第三可靠性指标来确定所述并网停车场的可用容量,所述第三智能配电系统通过在所述第一智能配电系统中添加发电机组得到。According to one aspect of the embodiments of the present invention, there is provided a method for determining the available capacity of a grid-connected parking lot, which is suitable for parking plug-in electric vehicles and meets the requirements for charging and discharging of the plug-in electric vehicles. As required, the method includes: comparing a first reliability index of a first intelligent power distribution system with a second reliability index of a second intelligent power distribution system, the first intelligent power distribution system does not include grid-connected parking lots, so The second smart power distribution system is obtained by adding the grid-connected parking lot to the first smart power distribution system, wherein the second reliability index is calculated according to the following steps: obtain the plug-in electric vehicle User behavior characteristics, the user behavior characteristics including the arrival time and parking time of the plug-in electric vehicle in the grid-connected parking lot, the required charging level when leaving the grid-connected parking lot, and the availability of V2G programs; Based on the user behavior characteristics, determine the charging and discharging time of the plug-in electric vehicle; determine the available power generation of the grid-connected parking lot for each moment of the simulation year; determine the total amount of the second intelligent power distribution system Available power generation and total load demand; use the power flow analysis method to determine whether the second smart power distribution system violates constraints; based on the judgment result, calculate the reliability index of the second smart power distribution system at that time; Reliability index, calculating the annual reliability index of the simulation year; calculating the second reliability index based on the annual reliability index of each simulation year; in the case that the first reliability index is not less than the second reliability index, Calculate the third reliability index of the third intelligent power distribution system, and determine the available capacity of the grid-connected parking lot based on the second reliability index and the third reliability index. It is obtained by adding a generator set to the first intelligent power distribution system.
根据本发明实施例的另一方面,提供了一种并网停车场的可用容量确定装置,所述并网停车场适于停放插电式电动汽车,并满足所述插电式电动汽 车的充放电需求,所述装置包括:指标比较单元,适于比较第一智能配电系统的第一可靠性指标和第二智能配电系统的第二可靠性指标,所述第一智能配电系统不包括并网停车场,所述第二智能配电系统通过在所述第一智能配电系统中添加所述并网停车场得到,其中所述指标比较单元还包括指标计算单元,所述指标计算单元适于按照以下步骤计算得到所述第二可靠性指标:获取所述插电式电动汽车的用户行为特征,所述用户行为特征包括所述插电式电动汽车在所述并网停车场的到达时间和停车时间、离开所述并网停车场时所需的充电水平、以及V2G程序可用性;基于所述用户行为特征,确定所述插电式电动汽车的充电和放电时间;对仿真年的每个时刻,确定并网停车场的可用发电量;确定所述第二智能配电系统的总可用发电量和总负荷需求;采用潮流分析方法,判断第二智能配电系统是否违反约束;基于判断结果,计算所述第二智能配电系统在该时刻的可靠性指标;根据多个时刻的可靠性指标,计算所述仿真年的年度可靠性指标;基于各个仿真年的年度可靠性指标计算所述第二可靠性指标;容量确定单元,适于在第一可靠性指标不小于第二可靠性指标的情况下,计算第三智能配电系统的第三可靠性指标,并基于第二可靠性指标和第三可靠性指标来确定所述并网停车场的可用容量,所述第三智能配电系统通过在所述第一智能配电系统中添加发电机组得到。According to another aspect of the embodiments of the present invention, there is provided a device for determining the available capacity of a grid-connected parking lot, which is suitable for parking plug-in electric vehicles and satisfies the charging of the plug-in electric vehicles. For discharge requirements, the device includes: an index comparison unit adapted to compare the first reliability index of the first smart power distribution system with the second reliability index of the second smart power distribution system, and the first smart power distribution system does not Including a grid-connected parking lot, the second smart power distribution system is obtained by adding the grid-connected parking lot to the first smart power distribution system, wherein the index comparison unit further includes an index calculation unit, and the index calculation The unit is adapted to calculate the second reliability index according to the following steps: obtain user behavior characteristics of the plug-in electric vehicle, the user behavior characteristics including the plug-in electric vehicle in the grid-connected parking lot Arrival time and parking time, the required charging level when leaving the grid-connected parking lot, and V2G program availability; based on the user behavior characteristics, determine the charging and discharging time of the plug-in electric vehicle; At each moment, determine the available power generation of the grid-connected parking lot; determine the total available power generation and total load demand of the second smart power distribution system; use the power flow analysis method to determine whether the second smart power distribution system violates constraints; According to the judgment result, calculate the reliability index of the second intelligent power distribution system at that moment; calculate the annual reliability index of the simulation year according to the reliability index of multiple moments; calculate the annual reliability index based on the simulation year The second reliability index; the capacity determining unit is adapted to calculate the third reliability index of the third intelligent power distribution system when the first reliability index is not less than the second reliability index, and based on the second reliability index And a third reliability index to determine the available capacity of the grid-connected parking lot, and the third intelligent power distribution system is obtained by adding a generator set to the first intelligent power distribution system.
根据本发明实施例的另一方面,提供了一种计算设备,包括:一个或多个处理器;和存储器;一个或多个程序,其中一个或多个程序存储在存储器中并被配置为由一个或多个处理器执行,一个或多个程序包括用于执行根据本发明实施例的并网停车场的可用容量确定方法中任一方法的指令。According to another aspect of the embodiments of the present invention, there is provided a computing device, including: one or more processors; and a memory; one or more programs, wherein one or more programs are stored in the memory and configured to be configured by One or more processors execute, and one or more programs include instructions for executing any one of the methods for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention.
根据本发明实施例的还有一个方面,提供了一种存储一个或多个程序的计算机可读存储介质,一个或多个程序包括指令,指令当计算设备执行时,使得计算设备执行根据本发明实施例的并网停车场的可用容量确定方法中的任一方法。According to another aspect of the embodiments of the present invention, there is provided a computer-readable storage medium storing one or more programs. The one or more programs include instructions. When the instructions are executed by a computing device, the computing device executes the Any of the methods for determining the available capacity of the grid-connected parking lot of the embodiment.
根据本发明实施例的并网停车场的可用容量确定方案通过确定并网停车场的可用容量,可以客观地估计和比较并网停车场对智能配电系统容量的贡献, 将其作为市场中的常规发电资源。其中,考虑了插电式电动汽车的用户行为的随机性及其与外部性的潜在依赖性。在此基础上,采用序贯蒙特卡洛仿真方法计算可靠性指标,可以完全地表示并网停车场的特性。The solution for determining the available capacity of the grid-connected parking lot according to the embodiment of the present invention can objectively estimate and compare the contribution of the grid-connected parking lot to the capacity of the intelligent power distribution system by determining the available capacity of the grid-connected parking lot. Conventional power generation resources. Among them, the randomness of user behavior of plug-in electric vehicles and its potential dependence on externalities are considered. On this basis, the sequential Monte Carlo simulation method is used to calculate the reliability index, which can completely express the characteristics of the grid-connected parking lot.
附图说明Description of the drawings
为了实现上述以及相关目的,本文结合下面的描述和附图来描述某些说明性方面,这些方面指示了可以实践本文所公开的原理的各种方式,并且所有方面及其等效方面旨在落入所要求保护的主题的范围内。通过结合附图阅读下面的详细描述,本公开的上述以及其它目的、特征和优势将变得更加明显。遍及本公开,相同的附图标记通常指代相同的部件或元素。In order to achieve the above and related purposes, this article describes certain illustrative aspects in conjunction with the following description and drawings. These aspects indicate various ways in which the principles disclosed herein can be practiced, and all aspects and their equivalents are intended to be Into the scope of the claimed subject matter. By reading the following detailed description in conjunction with the accompanying drawings, the above and other objectives, features and advantages of the present disclosure will become more apparent. Throughout this disclosure, the same reference numerals generally refer to the same parts or elements.
图1示出了根据本发明一个实施例的计算设备100的示意图;Fig. 1 shows a schematic diagram of a computing device 100 according to an embodiment of the present invention;
图2示出了根据本发明一个实施例的并网停车场的可用容量确定方法200的流程图;以及FIG. 2 shows a flowchart of a method 200 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention; and
图3示出了根据本发明一个实施例的并网停车场的可用容量确定装置300的结构框图。Fig. 3 shows a structural block diagram of a device 300 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention.
具体实施方式Detailed ways
下面将参照附图更详细地描述本公开的示例性实施例。虽然附图中显示了本公开的示例性实施例,然而应当理解,可以以各种形式实现本公开而不应被这里阐述的实施例所限制。相反,提供这些实施例是为了能够更透彻地理解本公开,并且能够将本公开的范围完整的传达给本领域的技术人员。Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
图1示出了根据本发明一个实施例的计算设备100的示意图。如图1所示,在基本的配置107中,计算设备100典型地包括系统存储器106和一个或者多个处理器104。存储器总线108可以用于在处理器104和系统存储器106之间的通信。Fig. 1 shows a schematic diagram of a computing device 100 according to an embodiment of the present invention. As shown in FIG. 1, in a basic configuration 107, the computing device 100 typically includes a system memory 106 and one or more processors 104. The memory bus 108 may be used for communication between the processor 104 and the system memory 106.
取决于期望的配置,处理器104可以是任何类型的处理器,包括但不限于:微处理器(μP)、微控制器(μC)、数字信息处理器(DSP)或者它们的任何组合。处理器104可以包括诸如一级高速缓存110和二级高速缓存112之类的一个或者多个级别的高速缓存、处理器核心114和寄存器116。示例的处理器核心114可以包括运算逻辑单元(ALU)、浮点数单元(FPU)、数字信号处理核心(DSP核心)或者它们的任何组合。示例的存储器控制器118可以与处理器104一起使用,或者在一些实现中,存储器控制器118可以是处理器104的一个内部部分。Depending on the desired configuration, the processor 104 may be any type of processor, including but not limited to: a microprocessor (μP), a microcontroller (μC), a digital information processor (DSP), or any combination thereof. The processor 104 may include one or more levels of cache, such as the first level cache 110 and the second level cache 112, the processor core 114, and the registers 116. The exemplary processor core 114 may include an arithmetic logic unit (ALU), a floating point number unit (FPU), a digital signal processing core (DSP core), or any combination thereof. The example memory controller 118 may be used with the processor 104, or in some implementations, the memory controller 118 may be an internal part of the processor 104.
取决于期望的配置,系统存储器106可以是任意类型的存储器,包括但不限于:易失性存储器(诸如RAM)、非易失性存储器(诸如ROM、闪存等)或者它们的任何组合。系统存储器106可以包括操作系统120、一个或者多个应用122以及程序数据124。在一些实施方式中,应用122可以布置为在操作系统上由一个或多个处理器104利用程序数据124执行指令。Depending on the desired configuration, the system memory 106 may be any type of memory, including but not limited to: volatile memory (such as RAM), non-volatile memory (such as ROM, flash memory, etc.), or any combination thereof. The system memory 106 may include an operating system 120, one or more applications 122, and program data 124. In some embodiments, the application 122 may be arranged to be executed by one or more processors 104 using program data 124 on an operating system.
计算设备100还可以包括有助于从各种接口设备(例如,输出设备142、外设接口144和通信设备146)到基本配置102经由总线/接口控制器130的通信的接口总线140。示例的输出设备142包括图形处理单元148和音频处理单元150。它们可以被配置为有助于经由一个或者多个A/V端口152或者HDMI接口与诸如显示器或者扬声器之类的各种外部设备进行通信。示例外设接口144可以包括串行接口控制器154和并行接口控制器156,它们可以被配置为有助于经由一个或者多个I/O端口158和诸如输入设备(例如,键盘、鼠标、笔、语音输入设备、触摸输入设备、遥控输入设备)或者其他外设(例如打印机、扫描仪等)之类的外部设备进行通信。示例的通信设备146可以包括网络控制器160,其可以被布置为便于经由一个或者多个通信端口164与一个或者多个其他计算设备162通过网络通信链路的通信。The computing device 100 may also include an interface bus 140 that facilitates communication from various interface devices (eg, output device 142, peripheral interface 144, and communication device 146) to the basic configuration 102 via the bus/interface controller 130. The example output device 142 includes a graphics processing unit 148 and an audio processing unit 150. They can be configured to facilitate communication with various external devices such as displays or speakers via one or more A/V ports 152 or HDMI interfaces. The example peripheral interface 144 may include a serial interface controller 154 and a parallel interface controller 156, which may be configured to facilitate communication via one or more I/O ports 158 and input devices such as keyboards, mice, pens, etc. , Voice input devices, touch input devices, remote control input devices) or other peripherals (such as printers, scanners, etc.) to communicate. The example communication device 146 may include a network controller 160, which may be arranged to facilitate communication with one or more other computing devices 162 via a network communication link via one or more communication ports 164.
网络通信链路可以是通信介质的一个示例。通信介质通常可以体现为在诸如载波或者其他传输机制之类的调制数据信号中的计算机可读指令、数据结构、程序模块,并且可以包括任何信息递送介质。“调制数据信号”可以是这样的信号,它的数据集中的一个或者多个或者它的改变可以在信号中编码信息的方式 进行。作为非限制性的示例,通信介质可以包括诸如有线网络或者专线网络之类的有线介质,以及诸如声音、射频(RF)、微波、红外(IR)或者其它无线介质在内的各种无线介质。这里使用的术语计算机可读介质可以包括存储介质和通信介质二者。A network communication link may be an example of a communication medium. The communication medium may generally be embodied as computer readable instructions, data structures, and program modules in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium. A "modulated data signal" can be a signal, one or more of its data set or its change can be done in a way of encoding information in the signal. As a non-limiting example, communication media may include wired media such as a wired network or a dedicated line network, and various wireless media such as sound, radio frequency (RF), microwave, infrared (IR), or other wireless media. The term computer readable media used herein may include both storage media and communication media.
计算设备100可以实现为服务器,例如数据库服务器、应用程序服务器和WEB服务器等,也可以实现为包括桌面计算机和笔记本计算机配置的个人计算机。当然,计算设备100也可以实现为小尺寸便携(或者移动)电子设备。The computing device 100 may be implemented as a server, such as a database server, an application server, a WEB server, etc., or may be implemented as a personal computer including a desktop computer and a notebook computer configuration. Of course, the computing device 100 can also be implemented as a small-sized portable (or mobile) electronic device.
在根据本发明的实施例中,计算设备100至少可以被实现为并网停车场的可用容量确定装置300中的各部件,并被配置为执行根据本发明实施例的并网停车场的可用容量确定方法200。其中,计算设备100的应用122中包含执行根据本发明实施例的并网停车场的可用容量确定方法200的多条指令,而程序数据124还可以存储并网停车场的可用容量确定装置300的配置信息等。In the embodiment according to the present invention, the computing device 100 can be implemented at least as each component in the device 300 for determining the available capacity of the grid-connected parking lot, and is configured to execute the available capacity of the grid-connected parking lot according to the embodiment of the invention. Determine method 200. Wherein, the application 122 of the computing device 100 contains multiple instructions for executing the method 200 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention, and the program data 124 may also store the information of the device 300 for determining the available capacity of a grid-connected parking lot. Configuration information, etc.
图2示出了根据本发明一个实施例的并网停车场的可用容量确定方法200的流程图。如图2所示,并网停车场的可用容量确定方法200适于在并网停车场的可用容量确定装置300中执行,并始于步骤S210。Fig. 2 shows a flowchart of a method 200 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention. As shown in FIG. 2, the method 200 for determining the available capacity of a grid-connected parking lot is suitable to be executed in the device 300 for determining the available capacity of a grid-connected parking lot, and starts at step S210.
其中,并网停车场的可用容量指的是插电式电动汽车在参与V2G(Vehicle-to-Grid)的过程中该并网停车场的可用容量。可以理解地,并网停车场(Grid-connected parking lot,GPL)适于停放插电式电动汽车(Plug-in electric vehicle,PEV),并满足插电式电动汽车的充放电需求。具体地,并网停车场可以对插电式电动汽车进行充电,也可以接收插电式电动汽车的放电。也就是说,并网停车场通常可以在并网停车场运营者(GPL operator,GPLO)的协调控制下实现插电式电动汽车与电网之间的双向电力交换。当并网停车场对插电式电动汽车进行充电时,插电式电动汽车运行G2V(Grid-to-vehicle)模式。当并网停车场接收插电式电动汽车的放电时,插电式电动汽车运行V2G(Vehicle-to-Grid)模式。Among them, the available capacity of the grid-connected parking lot refers to the available capacity of the grid-connected parking lot during the process of plug-in electric vehicles participating in V2G (Vehicle-to-Grid). Understandably, grid-connected parking lot (GPL) is suitable for parking plug-in electric vehicles (PEV) and meets the charging and discharging requirements of plug-in electric vehicles. Specifically, the grid-connected parking lot can charge plug-in electric vehicles and can also receive the discharge of plug-in electric vehicles. In other words, the grid-connected parking lot can usually realize the two-way power exchange between the plug-in electric vehicle and the grid under the coordinated control of the grid-connected parking lot operator (GPL operator, GPLO). When the grid-connected parking lot is charging the plug-in electric vehicle, the plug-in electric vehicle runs G2V (Grid-to-vehicle) mode. When the grid-connected parking lot receives the discharge of the plug-in electric vehicle, the plug-in electric vehicle runs in V2G (Vehicle-to-Grid) mode.
在步骤S210中,计算第一智能配电系统的第一可靠性指标,第一智能配电系统不包括并网停车场。In step S210, the first reliability index of the first smart power distribution system is calculated, and the first smart power distribution system does not include the grid-connected parking lot.
在计算第一智能配电系统组件的可靠性指标之前,可以先生成第一智能配电系统组件的状态持续时间序列,以得到第一智能配电系统的状态持续时间序列,并确定第一智能配电系统在状态持续时间序列中各个时刻的可用发电量。第一智能配电系统组件可以包括发电单元、变压器、双边充电器等等元件,本发明对此不做限制。Before calculating the reliability index of the first smart power distribution system component, the state duration time sequence of the first smart power distribution system component can be generated to obtain the state duration time sequence of the first smart power distribution system, and determine the first smart power distribution system. The available power generation of the power distribution system at each time in the state duration sequence. The first smart power distribution system component may include power generating units, transformers, dual chargers, and other components, which are not limited in the present invention.
在一些实施例中,发电单元的可用发电量
Figure PCTCN2020095647-appb-000001
为:
In some embodiments, the available power generation of the power generation unit
Figure PCTCN2020095647-appb-000001
for:
Figure PCTCN2020095647-appb-000002
Figure PCTCN2020095647-appb-000002
式中,
Figure PCTCN2020095647-appb-000003
是一个二元变量,表示时刻t时发电单元的机械状态。当发电单元在正常条件下工作时,
Figure PCTCN2020095647-appb-000004
否则,
Figure PCTCN2020095647-appb-000005
另外,
Figure PCTCN2020095647-appb-000006
表示周期t内处于额定状态的发电单元的潜在功率输出。
Where
Figure PCTCN2020095647-appb-000003
It is a binary variable that represents the mechanical state of the power generating unit at time t. When the power generation unit is working under normal conditions,
Figure PCTCN2020095647-appb-000004
otherwise,
Figure PCTCN2020095647-appb-000005
In addition,
Figure PCTCN2020095647-appb-000006
Represents the potential power output of the power generating unit in the rated state during the period t.
在时刻t时变压器的可用放电量
Figure PCTCN2020095647-appb-000007
可以表示为:
Available discharge capacity of the transformer at time t
Figure PCTCN2020095647-appb-000007
It can be expressed as:
Figure PCTCN2020095647-appb-000008
Figure PCTCN2020095647-appb-000008
式中,
Figure PCTCN2020095647-appb-000009
Figure PCTCN2020095647-appb-000010
分别表示时刻t时变压器的电网功率和机械可用性。
Where
Figure PCTCN2020095647-appb-000009
with
Figure PCTCN2020095647-appb-000010
Respectively represent the grid power and mechanical availability of the transformer at time t.
根据本发明的一些实施例,可以采用序贯蒙特卡洛仿真方法来计算第一智能配电系统的第一可靠性指标。According to some embodiments of the present invention, a sequential Monte Carlo simulation method may be used to calculate the first reliability index of the first intelligent power distribution system.
具体地,序贯蒙特卡洛仿真方法可以通过模拟智能配电系统运行的随机过程来实现可靠性指标的统计计算。下面描述此计算过程。Specifically, the sequential Monte Carlo simulation method can realize the statistical calculation of reliability indicators by simulating the random process of the operation of the intelligent power distribution system. The calculation process is described below.
首先给定仿真年数n,并令仿真起始年i=1。在时间跨度为1年,即8760个小时的条件下,对智能配电系统组件j(j=1,2,...,m)处于运行和修复状态的持续时间进行随机抽样,从而得到各组件第i年中的“运行-修复-运行-修复”的状态交替过程。First, specify the number of simulation years n, and set the simulation start year i=1. Under the condition that the time span is 1 year, that is, 8760 hours, the duration of the intelligent power distribution system component j (j = 1, 2,..., m) is randomly sampled to obtain each The "operation-repair-operation-repair" state alternate process of the component in the i-th year.
组合各组件的运行和修复过程,得到具有时间先后顺序的智能配电系统的状态持续时间序列
Figure PCTCN2020095647-appb-000011
对系统的状态持续时间序列
Figure PCTCN2020095647-appb-000012
中的每一个时刻的系统状态进行分析计算,包括潮流计算、最优负荷削减等。例如,先进行潮流计算以判断系统状态是否出现节点电压越限、线路过负荷等运行约束被违反的情况,如果运行约束被违反则进行最优负荷削减计算。
Combine the operation and repair process of each component to obtain the state duration time sequence of the intelligent power distribution system in chronological order
Figure PCTCN2020095647-appb-000011
Duration sequence of the state of the system
Figure PCTCN2020095647-appb-000012
Analyze and calculate the system status at each moment in the process, including power flow calculation, optimal load reduction, etc. For example, first perform a power flow calculation to determine whether the system state has a violation of operating constraints such as node voltage violations and line overloads. If the operating constraints are violated, the optimal load reduction calculation is performed.
接着,按以下公式计算第i年智能配电系统的年度可靠性指标;Then, calculate the annual reliability index of the intelligent power distribution system for the i-th year according to the following formula;
Figure PCTCN2020095647-appb-000013
Figure PCTCN2020095647-appb-000013
D(x ij)表示系统状态x ij的持续时间,f(x ij)表示以系统状态为自变量的系统性能测度函数,I i表示第i年的年度可靠性指标。应当指出,当f(x ij)取不同测度函数时,I i也就代表不同的可靠性指标。 D(x ij ) represents the duration of the system state x ij , f(x ij ) represents the system performance measurement function with the system state as an independent variable, and I i represents the annual reliability index of the i-th year. It should be noted that when f(x ij ) takes different measurement functions, I i also represent different reliability indicators.
按以下公式计算年度可靠性指标的期望值,也就是配电智能系统的可靠性指标
Figure PCTCN2020095647-appb-000014
Calculate the expected value of the annual reliability index according to the following formula, which is the reliability index of the distribution intelligent system
Figure PCTCN2020095647-appb-000014
Figure PCTCN2020095647-appb-000015
Figure PCTCN2020095647-appb-000015
按以下公式计算方差系数:Calculate the coefficient of variance according to the following formula:
Figure PCTCN2020095647-appb-000016
Figure PCTCN2020095647-appb-000016
Figure PCTCN2020095647-appb-000017
表示配电智能系统的可靠性指标
Figure PCTCN2020095647-appb-000018
的标准差,
Figure PCTCN2020095647-appb-000019
表示配电智能系统的可靠性指标
Figure PCTCN2020095647-appb-000020
的期望值。
Figure PCTCN2020095647-appb-000017
Indicates the reliability index of the distribution intelligent system
Figure PCTCN2020095647-appb-000018
Standard deviation,
Figure PCTCN2020095647-appb-000019
Indicates the reliability index of the distribution intelligent system
Figure PCTCN2020095647-appb-000020
Expectations.
接着,令i=i+1,如果i>n、或者方差系数β小于终止条件,则结束仿真,将本次仿真得到的可靠性指标作为最终值;否则重复采用序贯蒙特卡洛仿真方法来计算智能配电系统的可靠性指标。Then, let i=i+1, if i>n, or the variance coefficient β is less than the termination condition, the simulation ends, and the reliability index obtained in this simulation is used as the final value; otherwise, the sequential Monte Carlo simulation method is repeated Calculate the reliability index of the intelligent power distribution system.
还可以在步骤S220中,计算第二智能配电系统的第二可靠性指标。当然,在步骤S220之前,可以通过在上述第一智能配电系统中添加并网停车场得到该第二智能配电系统。It is also possible to calculate a second reliability index of the second intelligent power distribution system in step S220. Of course, before step S220, the second smart power distribution system can be obtained by adding a grid-connected parking lot to the above-mentioned first smart power distribution system.
同样地,可以采用序贯蒙特卡洛仿真方法来计算第二智能配电系统的第二可靠性指标。Similarly, the sequential Monte Carlo simulation method can be used to calculate the second reliability index of the second intelligent power distribution system.
具体来说,可以先获取插电式电动汽车的用户行为特征,用户行为特征可以包括以下特征中的至少一个:插电式电动汽车在并网停车场的到达时间
Figure PCTCN2020095647-appb-000021
和停车时间
Figure PCTCN2020095647-appb-000022
插电式电动汽车离开并网停车场时所需的充电水平
Figure PCTCN2020095647-appb-000023
以及插电式电动汽车的V2G程序可用性
Figure PCTCN2020095647-appb-000024
Specifically, the user behavior characteristics of the plug-in electric vehicle may be acquired first, and the user behavior characteristics may include at least one of the following characteristics: the arrival time of the plug-in electric vehicle in the grid-connected parking lot
Figure PCTCN2020095647-appb-000021
And parking time
Figure PCTCN2020095647-appb-000022
The charge level required when the plug-in electric vehicle leaves the grid-connected parking lot
Figure PCTCN2020095647-appb-000023
And the availability of V2G programs for plug-in electric vehicles
Figure PCTCN2020095647-appb-000024
接着,基于用户行为特征和并网停车场运营者(GPLO)的操作政策,确定插电式电动汽车的充放电时间。并网停车场运营者的操作政策可以如下:当插电式电动汽车PEV到达并网停车场GPL时,插电式电动汽车PEV将首先进行充电,直到其电池的SOC达到预定值,例如90%。然后,该PEV将从此有资格进行V2G操作,直到其SOC降至其所有者要求的SOC目标(即充电水平)。Then, based on the user behavior characteristics and the operation policy of the grid-connected parking lot operator (GPLO), the charging and discharging time of the plug-in electric vehicle is determined. The operating policy of the grid-connected parking lot operator can be as follows: when the plug-in electric vehicle PEV reaches the grid-connected parking lot GPL, the plug-in electric vehicle PEV will first be charged until the SOC of its battery reaches a predetermined value, for example, 90% . Then, the PEV will be eligible for V2G operation from now on until its SOC drops to the SOC target (ie, charge level) required by its owner.
接着,与第一可靠性指标相类似地,可以对仿真年的每个时刻,确定并网停车场的可用发电量、确定第二智能配电系统的总可用发电量和总负荷需求。例如,可以按照以下公式确定每个时刻第二智能配电系统的总可用发电量
Figure PCTCN2020095647-appb-000025
和总负荷需求
Figure PCTCN2020095647-appb-000026
Then, similar to the first reliability index, the available power generation of the grid-connected parking lot and the total available power generation and total load demand of the second intelligent power distribution system can be determined for each moment of the simulation year. For example, the total available power generation of the second intelligent power distribution system at each moment can be determined according to the following formula
Figure PCTCN2020095647-appb-000025
And total load demand
Figure PCTCN2020095647-appb-000026
Figure PCTCN2020095647-appb-000027
Figure PCTCN2020095647-appb-000027
Figure PCTCN2020095647-appb-000028
Figure PCTCN2020095647-appb-000028
式中,P dg表示发电单元(DG)的可用发电量,P dt表示变压器的可用发电量,P agc表示并网停车场的可用发电量,Ω D表示系统总线集合,P ch表示插电式电动汽车的充电水平,
Figure PCTCN2020095647-appb-000029
为指示插电式电动汽车k'在t时刻是否涉及并网停车场的二进制变量,
Figure PCTCN2020095647-appb-000030
为指示在时刻t双边充电器k的可用性的二进制变量,Ω CP表示双边充电器集合,Ω EV表示插电式电动汽车集合。
Figure PCTCN2020095647-appb-000031
表示时刻t内系统总线i的常规负荷需求,
Figure PCTCN2020095647-appb-000032
为一个二进制变量,用于指示插电式电动汽车k'在t时刻是否处于充电状态。
In the formula, P dg represents the available power generation of the power generation unit (DG), P dt represents the available power generation of the transformer, P agc represents the available power generation of the grid-connected parking lot, Ω D represents the system bus set, and P ch represents the plug-in type The charging level of electric vehicles,
Figure PCTCN2020095647-appb-000029
To indicate whether the plug-in electric vehicle k'is involved in the binary variable of the grid-connected parking lot at time t,
Figure PCTCN2020095647-appb-000030
As a binary variable indicating the availability of the bilateral charger k at time t, Ω CP represents the set of bilateral chargers, and Ω EV represents the set of plug-in electric vehicles.
Figure PCTCN2020095647-appb-000031
Represents the conventional load demand of system bus i at time t,
Figure PCTCN2020095647-appb-000032
It is a binary variable used to indicate whether the plug-in electric vehicle k'is in a charging state at time t.
Figure PCTCN2020095647-appb-000033
的结果可通过以下公式确定:
Figure PCTCN2020095647-appb-000033
The result of can be determined by the following formula:
Figure PCTCN2020095647-appb-000034
Figure PCTCN2020095647-appb-000034
Figure PCTCN2020095647-appb-000035
Figure PCTCN2020095647-appb-000035
其中,
Figure PCTCN2020095647-appb-000036
是用于指定插电式电动汽车k’在时刻t期间V2G程序可用性的二进制变量,P ch和η bc分别表示双边充电器的额定充电功率和工作效率,
Figure PCTCN2020095647-appb-000037
为插电式电动汽车k’在并网停车场的到达时间,可以从
Figure PCTCN2020095647-appb-000038
中随 机采样得到。
Figure PCTCN2020095647-appb-000039
表示插电式电动汽车k’的SOC达到阈值的时间,可以按照以下公式计算得到:
among them,
Figure PCTCN2020095647-appb-000036
It is a binary variable used to specify the availability of the V2G program of the plug-in electric vehicle k'at time t, P ch and η bc respectively represent the rated charging power and working efficiency of the bilateral charger,
Figure PCTCN2020095647-appb-000037
The arrival time of plug-in electric vehicles k'at the grid-connected parking lot can be determined from
Figure PCTCN2020095647-appb-000038
Random sampling in.
Figure PCTCN2020095647-appb-000039
Indicates the time when the SOC of plug-in electric vehicle k'reaches the threshold, which can be calculated according to the following formula:
Figure PCTCN2020095647-appb-000040
Figure PCTCN2020095647-appb-000040
P ch和η bc分别表示双边充电器的额定充电功率和工作效率,
Figure PCTCN2020095647-appb-000041
是GPLO用于V2G实现的阈值SoC值,为给定(已知先验)参数。
P ch and η bc respectively represent the rated charging power and working efficiency of the bilateral charger,
Figure PCTCN2020095647-appb-000041
It is the threshold SoC value used by GPLO for V2G implementation, and is a given (known prior) parameter.
根据车辆到达时的初始荷电状态及其在后续行程中的预期行驶距离来确定插电式电动汽车k’对并网停车场运营者的充电需求
Figure PCTCN2020095647-appb-000042
According to the initial state of charge when the vehicle arrives and the expected driving distance in the subsequent journey, the plug-in electric vehicle k'is determined to be the charging demand of the grid-connected parking lot operator
Figure PCTCN2020095647-appb-000042
Figure PCTCN2020095647-appb-000043
Figure PCTCN2020095647-appb-000043
式中,
Figure PCTCN2020095647-appb-000044
为插电式电动汽车k’电池的尺寸(单位:kWh),
Figure PCTCN2020095647-appb-000045
分别表示到达时插电式电动汽车k’的初始SoC和离开并网停车场时所需的SoC(充电水平)。其中
Figure PCTCN2020095647-appb-000046
Where
Figure PCTCN2020095647-appb-000044
Is the size of the plug-in electric vehicle k'battery (unit: kWh),
Figure PCTCN2020095647-appb-000045
Represent the initial SoC of the plug-in electric vehicle k'upon arrival and the SoC (charge level) required when leaving the grid-connected parking lot. among them
Figure PCTCN2020095647-appb-000046
而后,采用潮流分析方法,判断第二智能配电系统是否违反约束。并基于判断结果,计算第二智能配电系统在该时刻的可靠性指标。例如,以电量不足期望值(ENNS)为例,如果未违反运行约束,则表明系统运行正常,此时刻的未提供电量(ENN)为0。如果违反运行约束,表明系统处于应急状态,需要进行最优负荷削减计算,此时刻的未提供电量(ENN)为
Figure PCTCN2020095647-appb-000047
其中
Figure PCTCN2020095647-appb-000048
表示时刻t内总线i的不满足负荷需求。
Then, the power flow analysis method is used to determine whether the second intelligent power distribution system violates the constraints. And based on the judgment result, calculate the reliability index of the second intelligent power distribution system at this moment. For example, taking the expected value of insufficient power (ENNS) as an example, if the operating constraint is not violated, it indicates that the system is operating normally, and the unsupplied power (ENN) at this moment is 0. If the operating constraint is violated, it indicates that the system is in an emergency state and the optimal load reduction calculation is required. The unsupplied power (ENN) at this moment is
Figure PCTCN2020095647-appb-000047
among them
Figure PCTCN2020095647-appb-000048
Indicates that the load demand of bus i at time t is not met.
接着根据多个时刻的可靠性指标,计算该仿真年的年度可靠性指标。再基于各个仿真年的年度可靠性指标计算第二可靠性指标和方差系数。判断方差系数是否满足终止条件。如果不满足,则重复上述获取用户行为特征,确定插电式电动汽车的充电和放电时间,计算仿真年的年度可靠性指标,以及计算第二可靠性指标和方差系数的步骤,直至方差系数满足终止条件。最后将满足终止条件时的第二可靠性指标作为最终的第二可靠性指标。Then, calculate the annual reliability index for the simulation year based on the reliability index at multiple times. Then calculate the second reliability index and variance coefficient based on the annual reliability index of each simulation year. Determine whether the variance coefficient meets the termination condition. If not, repeat the steps of obtaining user behavior characteristics, determining the charging and discharging time of plug-in electric vehicles, calculating the annual reliability index of the simulation year, and calculating the second reliability index and the variance coefficient, until the variance coefficient is satisfied Termination condition. Finally, the second reliability index when the termination condition is met is used as the final second reliability index.
在一些实施例中,终止条件可以为β≤0.05。In some embodiments, the termination condition may be β≦0.05.
在得到第一可靠性指标和第二可靠性指标之后,可以比较第一可靠性指标和第二可靠性指标。如果第一可靠性指标小于第二可靠性指标的情况下,可 以认为并网停车场的可用容量为0。After the first reliability index and the second reliability index are obtained, the first reliability index and the second reliability index can be compared. If the first reliability index is less than the second reliability index, the available capacity of the grid-connected parking lot can be considered as zero.
如果第一可靠性指标不小于第二可靠性指标,可以选择等效固定容量、或者等效常规容量、或者有效承载能力来作为并网停车场的可用容量。If the first reliability index is not less than the second reliability index, the equivalent fixed capacity, or equivalent conventional capacity, or effective carrying capacity can be selected as the available capacity of the grid-connected parking lot.
根据本发明的一个实施例,在第一可靠性指标不小于第二可靠性指标的情况下,如果选择等效固定容量、或者等效常规容量来衡量并网停车场的可用容量,那么可以在步骤S230中,计算第三智能配电系统的第三可靠性指标,并基于第二可靠性指标和第三可靠性指标来确定并网停车场的可用容量。当然,在步骤S230之前,可以通过在第一智能配电系统中添加发电机组得到第三智能配电系统。According to an embodiment of the present invention, when the first reliability index is not less than the second reliability index, if the equivalent fixed capacity or equivalent conventional capacity is selected to measure the available capacity of the grid-connected parking lot, then In step S230, the third reliability index of the third intelligent power distribution system is calculated, and the available capacity of the grid-connected parking lot is determined based on the second reliability index and the third reliability index. Of course, before step S230, the third smart power distribution system can be obtained by adding a generator set to the first smart power distribution system.
其中,计算第三可靠性指标的过程与计算第一可靠性指标的过程相类似,此处不再赘述。The process of calculating the third reliability index is similar to the process of calculating the first reliability index, and will not be repeated here.
具体地,在得到第三可靠性指标之后,可以基于第二可靠性和第三可靠性指标计算收敛系数。例如按照以下公式计算收敛系数α V-GPLSpecifically, after the third reliability index is obtained, the convergence coefficient may be calculated based on the second reliability and the third reliability index. For example, calculate the convergence coefficient α V-GPL according to the following formula:
α V-GPL=|I V-I GPL|/I GPLα V-GPL =|I V -I GPL |/I GPL ,
I V为第三可靠性指标,I GPL为第二可靠性指标。 I V is the third reliability index, and I GPL is the second reliability index.
判断收敛系数α V-GPL是否满足收敛条件。在一些实施例中,收敛条件可以为α V-GPL<ζ。 Determine whether the convergence coefficient α V-GPL satisfies the convergence condition. In some embodiments, the convergence condition may be α V-GPL <ζ.
在收敛系数α V-GPL不满足收敛条件的情况下,重复基于第二可靠性和第三可靠性指标调整发电机组的容量,计算第三可靠性指标,以及计算收敛系数的步骤,直至收敛系数满足收敛条件。 When the convergence coefficient α V-GPL does not meet the convergence conditions, repeat the steps of adjusting the capacity of the generator set based on the second reliability and the third reliability index, calculating the third reliability index, and calculating the convergence coefficient until the convergence coefficient Meet the convergence condition.
其中,发电机组的容量基于第一参数和第二参数确定。例如,按照以下公式确定发电机组的容量C bmWherein, the capacity of the generator set is determined based on the first parameter and the second parameter. For example, determine the capacity C bm of the generator set according to the following formula:
C bm=(C max+C min)/2,C max表示第一参数,C min表示第二参数。初始情况下,令C max=C rat,C min=0,C rat是任意选择的正值。 C bm =(C max +C min )/2, C max represents the first parameter, and C min represents the second parameter. In the initial situation, let C max =C rat , C min =0, and C rat is an arbitrarily selected positive value.
如果收敛系数α V-GPL不满足收敛条件,基于第二可靠性和第三可靠性指标调整发电机组的容量的过程可以如下: If the convergence coefficient α V-GPL does not meet the convergence condition, the process of adjusting the capacity of the generator set based on the second reliability and the third reliability index can be as follows:
比较第二可靠性指标和第三可靠性指标。而后基于第二可靠性指标和第三可靠性指标的比较结果,根据发电机组的当前容量调整第一参数或者第二参数,以便相应调整发电机组的容量。Compare the second reliability index and the third reliability index. Then, based on the comparison result of the second reliability index and the third reliability index, the first parameter or the second parameter is adjusted according to the current capacity of the generator set, so as to adjust the capacity of the generator set accordingly.
例如,如果第三可靠性指标大于第二可靠性指标,则按照以下公式调整第二参数C min,从而调整发电机组的容量C bmFor example, if the third reliability index is greater than the second reliability index, the second parameter C min is adjusted according to the following formula to adjust the capacity C bm of the generator set:
C min=C bmC min =C bm .
如果第三可靠性指标不大于第二可靠性指标,则按照以下公式调整第一参数C max,从而调整发电机组的容量C bmIf the third reliability index is not greater than the second reliability index, adjust the first parameter C max according to the following formula to adjust the capacity C bm of the generator set:
C max=C bmC max =C bm .
最后,根据收敛系数α V-GPL满足收敛条件时发电机组的容量,确定并网停车场的可用容量。也就是,根据发电机组的容量,确定发电机组的等效固定容量或者等效常规容量,以作为并网停车场的可用容量。例如,按照以下公式确定发电机组的等效固定容量EFC或者等效常规容量ECC: Finally, the available capacity of the grid-connected parking lot is determined according to the capacity of the generator set when the convergence coefficient α V-GPL meets the convergence condition. That is, according to the capacity of the generator set, the equivalent fixed capacity or equivalent conventional capacity of the generator set is determined as the available capacity of the grid-connected parking lot. For example, determine the equivalent fixed capacity EFC or equivalent conventional capacity ECC of a generator set according to the following formula:
EFC/ECC=C bmEFC/ECC=C bm .
根据本发明的另一个实施例,在第一可靠性指标不小于第二可靠性指标的情况下,如果选择有效承载能力来衡量并网停车场的可用容量,那么可以在步骤S240中,计算第四智能配电系统的第四可靠性指标,并基于第一可靠性指标和第四可靠性指标来确定并网停车场的可用容量。当然,在步骤S240之前,可以通过在第二智能配电系统中添加虚拟负载得到第四智能配电系统。According to another embodiment of the present invention, in the case where the first reliability index is not less than the second reliability index, if the effective carrying capacity is selected to measure the available capacity of the grid-connected parking lot, then in step S240, the second reliability index can be calculated. 4. The fourth reliability index of the intelligent power distribution system, and the available capacity of the grid-connected parking lot is determined based on the first reliability index and the fourth reliability index. Of course, before step S240, the fourth smart power distribution system can be obtained by adding a virtual load to the second smart power distribution system.
其中,计算第四可靠性指标的过程与计算第一可靠性指标的过程相类似,此处不再赘述。The process of calculating the fourth reliability index is similar to the process of calculating the first reliability index, and will not be repeated here.
具体地,在得到第四可靠性指标之后,可以基于第一可靠性和第四可靠性指标计算收敛系数。例如按照以下公式计算收敛系数
Figure PCTCN2020095647-appb-000049
Specifically, after the fourth reliability index is obtained, the convergence coefficient may be calculated based on the first reliability and the fourth reliability index. For example, calculate the convergence coefficient according to the following formula
Figure PCTCN2020095647-appb-000049
Figure PCTCN2020095647-appb-000050
Figure PCTCN2020095647-appb-000050
Figure PCTCN2020095647-appb-000051
为第四可靠性指标,I base为第一可靠性指标。
Figure PCTCN2020095647-appb-000051
Is the fourth reliability index, and I base is the first reliability index.
判断收敛系数
Figure PCTCN2020095647-appb-000052
是否满足收敛条件。在一些实施例中,收敛条件可以 为
Figure PCTCN2020095647-appb-000053
Judging the convergence coefficient
Figure PCTCN2020095647-appb-000052
Whether the convergence condition is met. In some embodiments, the convergence condition can be
Figure PCTCN2020095647-appb-000053
在收敛系数
Figure PCTCN2020095647-appb-000054
不满足收敛条件的情况下,重复基于第一可靠性指标和第四可靠性指标调整发电机组的容量,计算第四可靠性指标,以及计算收敛系数的步骤,直至收敛系数满足收敛条件。
In convergence coefficient
Figure PCTCN2020095647-appb-000054
If the convergence condition is not met, the steps of adjusting the capacity of the generator set based on the first reliability index and the fourth reliability index, calculating the fourth reliability index, and calculating the convergence coefficient are repeated until the convergence coefficient meets the convergence conditions.
其中,虚拟负载的容量基于第三参数和第四参数确定。例如,按照以下公式确定虚拟负载的容量D vlAmong them, the capacity of the virtual load is determined based on the third parameter and the fourth parameter. For example, determine the virtual load capacity D vl according to the following formula:
D vl=(D max+D min)/2,D max表示第三参数,D min表示第四参数。初始情况下,令D max=D rat,D min=0,D rat是任意选择的正值。 D vl = (D max + D min )/2, D max represents the third parameter, and D min represents the fourth parameter. In the initial situation, let D max =D rat , D min =0, and D rat is an arbitrarily selected positive value.
如果收敛系数
Figure PCTCN2020095647-appb-000055
不满足收敛条件,基于第一可靠性指标和第四可靠性指标调整虚拟负载的容量的过程可以如下:
If the convergence coefficient
Figure PCTCN2020095647-appb-000055
If the convergence condition is not met, the process of adjusting the capacity of the virtual load based on the first reliability index and the fourth reliability index may be as follows:
比较第一可靠性指标和第四可靠性指标。而后基于第一可靠性指标和第四可靠性指标的比较结果,根据虚拟负载的当前容量调整第三参数或者第四参数,以便相应调整虚拟负载的容量。Compare the first reliability index and the fourth reliability index. Then, based on the comparison result of the first reliability index and the fourth reliability index, the third parameter or the fourth parameter is adjusted according to the current capacity of the virtual load, so as to adjust the capacity of the virtual load accordingly.
例如,如果第四可靠性指标小于第一可靠性指标,则按照以下公式调整第四参数D min,从而调整虚拟负载的容量D vlFor example, if the fourth reliability index is smaller than the first reliability index, the fourth parameter D min is adjusted according to the following formula to adjust the virtual load capacity D vl :
D min=D vlD min =D vl .
如果第四可靠性指标不小于第一可靠性指标,则按照以下公式调整第三参数D max,从而调整虚拟负载的容量D vlIf the fourth reliability index is not less than the first reliability index, the third parameter D max is adjusted according to the following formula, thereby adjusting the virtual load capacity D vl :
D max=D vlD max =D vl .
最后,根据收敛系数
Figure PCTCN2020095647-appb-000056
满足收敛条件时虚拟负载的容量,确定并网停车场的可用容量。也就是,根据虚拟负载的容量,确定虚拟负载的有效承载能力,以作为并网停车场的可用容量。例如,按照以下公式确定虚拟负载的有效承载能力ELCC:
Finally, according to the convergence coefficient
Figure PCTCN2020095647-appb-000056
The capacity of the virtual load when the convergence condition is met, and the available capacity of the grid-connected parking lot is determined. That is, according to the capacity of the virtual load, the effective carrying capacity of the virtual load is determined as the available capacity of the grid-connected parking lot. For example, determine the effective carrying capacity ELCC of the virtual load according to the following formula:
ELCC=D vlELCC=D vl .
根据本发明的各种实施方式,上述可靠性指标(第一、第二、第三和第四可靠性指标)可以包括以下指标中的至少一个:切负荷概率PLC、切负荷频率 EFLC、切负荷持续时间EDLC、平均切负荷持续时间ADLC、切负荷期望值ELC、系统停电指标BPII、系统削减电量指标BPECI、严重度指标SI和电量不足期望值EENS。优选地,可以采用电量不足期望值EENS来衡量系统的可靠性。According to various embodiments of the present invention, the aforementioned reliability indicators (first, second, third, and fourth reliability indicators) may include at least one of the following indicators: load shedding probability PLC, load shedding frequency EFLC, load shedding Duration EDLC, average load shedding duration ADLC, load shedding expected value ELC, system power outage index BPII, system power reduction index BPECI, severity index SI, and insufficient battery expected value EENS. Preferably, the expected value of insufficient power EENS can be used to measure the reliability of the system.
图3示出了根据本发明一个实施例的并网停车场的可用容量确定装置300的结构框图。如图3所示,并网停车场的可用容量确定装置300包括指标比较单元310和容量确定单元320。Fig. 3 shows a structural block diagram of a device 300 for determining the available capacity of a grid-connected parking lot according to an embodiment of the present invention. As shown in FIG. 3, the device 300 for determining the available capacity of a grid-connected parking lot includes an index comparison unit 310 and a capacity determination unit 320.
指标比较单元310适于比较第一智能配电系统的第一可靠性指标和第二智能配电系统的第二可靠性指标,第一智能配电系统不包括并网停车场,第二智能配电系统通过在第一智能配电系统中添加并网停车场得到。The index comparison unit 310 is adapted to compare the first reliability index of the first smart power distribution system with the second reliability index of the second smart power distribution system. The first smart power distribution system does not include grid-connected parking lots and the second smart power distribution system The electrical system is obtained by adding a grid-connected parking lot to the first intelligent power distribution system.
指标比较单元310还包括指标计算单元311,指标计算单元311适于按照以下步骤计算得到第二可靠性指标:获取插电式电动汽车的用户行为特征,用户行为特征包括插电式电动汽车在所述并网停车场的到达时间和停车时间、离开并网停车场时所需的充电水平、以及V2G程序可用性。接着基于用户行为特征,确定插电式电动汽车的充电和放电时间(即充放电时间)。接着对仿真年的每个时刻,确定并网停车场的可用发电量;确定第二智能配电系统的总可用发电量和总负荷需求;采用潮流分析方法,判断第二智能配电系统是否违反约束;基于判断结果,计算第二智能配电系统在该时刻的可靠性指标。接着根据多个时刻的可靠性指标,计算该仿真年的年度可靠性指标。最后基于各个仿真年的年度可靠性指标计算第二可靠性指标。The index comparison unit 310 also includes an index calculation unit 311, which is adapted to calculate the second reliability index according to the following steps: obtain the user behavior characteristics of the plug-in electric vehicle, and the user behavior characteristics include the presence of the plug-in electric vehicle. Describe the arrival time and parking time of the grid-connected parking lot, the charging level required when leaving the grid-connected parking lot, and the availability of V2G programs. Then, based on the user's behavior characteristics, the charging and discharging time (ie, charging and discharging time) of the plug-in electric vehicle is determined. Then for each moment of the simulation year, determine the available power generation of the grid-connected parking lot; determine the total available power generation and total load demand of the second intelligent power distribution system; use the power flow analysis method to determine whether the second intelligent power distribution system violates Constraint: Based on the judgment result, calculate the reliability index of the second intelligent power distribution system at this moment. Then, calculate the annual reliability index for the simulation year based on the reliability index at multiple times. Finally, the second reliability index is calculated based on the annual reliability index of each simulation year.
容量确定单元320适于在第一可靠性指标不小于第二可靠性指标的情况下,计算第三智能配电系统的第三可靠性指标,并基于第二可靠性指标和第三可靠性指标来确定并网停车场的可用容量,第三智能配电系统通过在第一智能配电系统中添加发电机组得到。The capacity determining unit 320 is adapted to calculate the third reliability index of the third intelligent power distribution system based on the second reliability index and the third reliability index when the first reliability index is not less than the second reliability index To determine the available capacity of the grid-connected parking lot, the third smart power distribution system is obtained by adding a generator set to the first smart power distribution system.
容量确定单元320还适于在第一可靠性指标不小于第二可靠性指标的情况下,计算第四智能配电系统的第四可靠性指标,并基于第一可靠性指标和第四可靠性指标来确定并网停车场的可用容量,第四智能配电系统通过在第二智能配电系统中添加虚拟负载得到。The capacity determination unit 320 is further adapted to calculate a fourth reliability index of the fourth intelligent power distribution system based on the first reliability index and the fourth reliability index when the first reliability index is not less than the second reliability index. Indicators to determine the available capacity of the grid-connected parking lot, the fourth intelligent power distribution system is obtained by adding a virtual load to the second intelligent power distribution system.
关于并网停车场的可用容量确定装置300中各单元的详细处理逻辑和实施过程可以参见前文结合图1-图2对并网停车场的可用容量确定方法200的相关描述,此处不再赘述。For the detailed processing logic and implementation process of each unit in the device 300 for determining the available capacity of the grid-connected parking lot, please refer to the previous description of the method 200 for determining the available capacity of the grid-connected parking lot in conjunction with Figures 1 and 2, which will not be repeated here. .
综上所述,根据本发明实施例的并网停车场的可用容量确定方案通过确定并网停车场的可用容量,可以客观地估计和比较并网停车场对智能配电系统容量的贡献,将其作为市场中的常规发电资源。其中,考虑了插电式电动汽车的用户行为的随机性及其与外部性的潜在依赖性。在此基础上,采用序贯蒙特卡洛仿真方法计算可靠性指标,可以完全地表示并网停车场的特性。In summary, the available capacity determination scheme of the grid-connected parking lot according to the embodiment of the present invention can objectively estimate and compare the contribution of the grid-connected parking lot to the capacity of the intelligent power distribution system by determining the available capacity of the grid-connected parking lot. It serves as a conventional power generation resource in the market. Among them, the randomness of user behavior of plug-in electric vehicles and its potential dependence on externalities are considered. On this basis, the sequential Monte Carlo simulation method is used to calculate the reliability index, which can completely express the characteristics of the grid-connected parking lot.
应当理解,为了精简本公开并帮助理解各个发明方面中的一个或多个,在上面对本发明的示例性实施例的描述中,本发明的各个特征有时被一起分组到单个实施例、图、或者对其的描述中。然而,并不应将该公开的方法解释成反映如下意图:即所要求保护的本发明要求比在每个权利要求中所明确记载的特征更多特征。更确切地说,如下面的权利要求书所反映的那样,发明方面在于少于前面公开的单个实施例的所有特征。因此,遵循具体实施方式的权利要求书由此明确地并入该具体实施方式,其中每个权利要求本身都作为本发明的单独实施例。It should be understood that, in order to simplify the present disclosure and help understand one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or In its description. However, the disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those explicitly stated in each claim. More precisely, as reflected in the following claims, the inventive aspect lies in less than all the features of a single embodiment disclosed previously. Therefore, the claims following the specific embodiment are thus explicitly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present invention.
本领域那些技术人员应当理解在本文所公开的示例中的设备的模块或单元或组件可以布置在如该实施例中所描述的设备中,或者可替换地可以定位在与该示例中的设备不同的一个或多个设备中。前述示例中的模块可以组合为一个模块或者此外可以分成多个子模块。Those skilled in the art should understand that the modules or units or components of the device in the example disclosed herein can be arranged in the device as described in this embodiment, or alternatively can be positioned differently from the device in this example In one or more devices. The modules in the foregoing examples can be combined into one module or further divided into multiple sub-modules.
本领域那些技术人员可以理解,可以对实施例中的设备中的模块进行自适应性地改变并且把它们设置在与该实施例不同的一个或多个设备中。可以把实施例中的模块或单元或组件组合成一个模块或单元或组件,以及此外可以把它们分成多个子模块或子单元或子组件。除了这样的特征和/或过程或者单元中的至少一些是相互排斥之外,可以采用任何组合对本说明书(包括伴随的权利要求、摘要和附图)中公开的所有特征以及如此公开的任何方法或者设备的所有过程或单元进行组合。除非另外明确陈述,本说明书(包括伴 随的权利要求、摘要和附图)中公开的每个特征可以由提供相同、等同或相似目的的替代特征来代替。Those skilled in the art can understand that it is possible to adaptively change the modules in the device in the embodiment and set them in one or more devices different from the embodiment. The modules or units or components in the embodiments can be combined into one module or unit or component, and in addition, they can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and/or processes or units are mutually exclusive, any combination can be used to compare all features disclosed in this specification (including the accompanying claims, abstract and drawings) and any method or methods disclosed in this manner or All the processes or units of the equipment are combined. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.
此外,本领域的技术人员能够理解,尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征,但是不同实施例的特征的组合意味着处于本发明的范围之内并且形成不同的实施例。例如,在下面的权利要求书中,所要求保护的实施例的任意之一都可以以任意的组合方式来使用。In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments means that they are within the scope of the present invention. Within and form different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination.
此外,所述实施例中的一些在此被描述成可以由计算机系统的处理器或者由执行所述功能的其它装置实施的方法或方法元素的组合。因此,具有用于实施所述方法或方法元素的必要指令的处理器形成用于实施该方法或方法元素的装置。此外,装置实施例的在此所述的元素是如下装置的例子:该装置用于实施由为了实施该发明的目的的元素所执行的功能。In addition, some of the embodiments are described herein as methods or combinations of method elements that can be implemented by a processor of a computer system or by other devices that perform the described functions. Therefore, a processor with the necessary instructions for implementing the method or method element forms a device for implementing the method or method element. In addition, the elements described herein of the device embodiments are examples of devices for implementing functions performed by the elements for the purpose of implementing the invention.
如在此所使用的那样,除非另行规定,使用序数词“第一”、“第二”、“第三”等等来描述普通对象仅仅表示涉及类似对象的不同实例,并且并不意图暗示这样被描述的对象必须具有时间上、空间上、排序方面或者以任意其它方式的给定顺序。As used herein, unless otherwise specified, the use of ordinal numbers "first", "second", "third", etc. to describe ordinary objects merely refers to different instances of similar objects, and is not intended to imply such The described objects must have a given order in terms of time, space, order, or in any other way.
尽管根据有限数量的实施例描述了本发明,但是受益于上面的描述,本技术领域内的技术人员明白,在由此描述的本发明的范围内,可以设想其它实施例。此外,应当注意,本说明书中使用的语言主要是为了可读性和教导的目的而选择的,而不是为了解释或者限定本发明的主题而选择的。因此,在不偏离所附权利要求书的范围和精神的情况下,对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。对于本发明的范围,对本发明所做的公开是说明性的,而非限制性的,本发明的范围由所附权利要求书限定。Although the present invention has been described in terms of a limited number of embodiments, benefiting from the above description, those skilled in the art understand that other embodiments can be envisaged within the scope of the invention thus described. In addition, it should be noted that the language used in this specification is mainly selected for the purpose of readability and teaching, not for explaining or limiting the subject of the present invention. Therefore, without departing from the scope and spirit of the appended claims, many modifications and alterations are obvious to those of ordinary skill in the art. For the scope of the present invention, the disclosure of the present invention is illustrative rather than restrictive, and the scope of the present invention is defined by the appended claims.

Claims (17)

  1. 一种并网停车场的可用容量确定方法,所述并网停车场适于停放插电式电动汽车,并满足所述插电式电动汽车的充放电需求,所述方法包括:A method for determining the available capacity of a grid-connected parking lot, which is suitable for parking plug-in electric vehicles and meets the charging and discharging requirements of the plug-in electric vehicles, the method comprising:
    比较第一智能配电系统的第一可靠性指标和第二智能配电系统的第二可靠性指标,所述第一智能配电系统不包括并网停车场,所述第二智能配电系统通过在所述第一智能配电系统中添加所述并网停车场得到,其中Compare the first reliability index of the first smart power distribution system with the second reliability index of the second smart power distribution system. The first smart power distribution system does not include grid-connected parking lots, and the second smart power distribution system Obtained by adding the grid-connected parking lot to the first intelligent power distribution system, where
    所述第二可靠性指标按照以下步骤计算得到:The second reliability index is calculated according to the following steps:
    获取所述插电式电动汽车的用户行为特征,所述用户行为特征包括所述插电式电动汽车在所述并网停车场的到达时间和停车时间、离开所述并网停车场时所需的充电水平、以及V2G程序可用性;Obtain the user behavior characteristics of the plug-in electric vehicle, and the user behavior characteristics include the arrival time and parking time of the plug-in electric vehicle in the grid-connected parking lot, and the required time when leaving the grid-connected parking lot. Charging level and V2G program availability;
    基于所述用户行为特征,确定所述插电式电动汽车的充电和放电时间;Determining the charging and discharging time of the plug-in electric vehicle based on the user behavior characteristics;
    对仿真年的每个时刻,确定并网停车场的可用发电量;确定所述第二智能配电系统的总可用发电量和总负荷需求;采用潮流分析方法,判断第二智能配电系统是否违反约束;基于判断结果,计算所述第二智能配电系统在该时刻的可靠性指标;For each moment of the simulation year, determine the available power generation of the grid-connected parking lot; determine the total available power generation and total load demand of the second intelligent power distribution system; determine whether the second intelligent power distribution system is Violation of constraints; based on the judgment result, calculating the reliability index of the second intelligent power distribution system at this moment;
    根据多个时刻的可靠性指标,计算所述仿真年的年度可靠性指标;Calculate the annual reliability index of the simulation year according to the reliability index at multiple times;
    基于各个仿真年的年度可靠性指标计算所述第二可靠性指标;Calculating the second reliability index based on the annual reliability index of each simulation year;
    在第一可靠性指标不小于第二可靠性指标的情况下,计算第三智能配电系统的第三可靠性指标,并基于第二可靠性指标和第三可靠性指标来确定所述并网停车场的可用容量,所述第三智能配电系统通过在所述第一智能配电系统中添加发电机组得到。In the case that the first reliability index is not less than the second reliability index, the third reliability index of the third intelligent power distribution system is calculated, and the grid connection is determined based on the second reliability index and the third reliability index The available capacity of the parking lot is obtained by the third smart power distribution system by adding a generator set to the first smart power distribution system.
  2. 如权利要求1所述的方法,其中,还包括:The method of claim 1, further comprising:
    在第一可靠性指标不小于第二可靠性指标的情况下,计算第四智能配电系统的第四可靠性指标,并基于第一可靠性指标和第四可靠性指标来确定所 述并网停车场的可用容量,所述第四智能配电系统通过在所述第二智能配电系统中添加虚拟负载得到。In the case that the first reliability index is not less than the second reliability index, the fourth reliability index of the fourth intelligent power distribution system is calculated, and the grid connection is determined based on the first reliability index and the fourth reliability index The available capacity of the parking lot is obtained by the fourth smart power distribution system by adding a virtual load to the second smart power distribution system.
  3. 如权利要求1所述的方法,其中,基于第二可靠性指标和第三可靠性指标来确定所述并网停车场的可用容量的步骤包括:The method of claim 1, wherein the step of determining the available capacity of the grid-connected parking lot based on the second reliability index and the third reliability index comprises:
    基于第二可靠性和第三可靠性指标计算收敛系数;Calculate the convergence coefficient based on the second reliability and the third reliability index;
    判断收敛系数是否满足收敛条件;Judge whether the convergence coefficient meets the convergence condition;
    在收敛系数不满足收敛条件的情况下,重复基于第二可靠性指标和第三可靠性指标调整所述发电机组的容量,计算第三可靠性指标,以及计算收敛系数的步骤,直至收敛系数满足收敛条件;In the case that the convergence coefficient does not meet the convergence condition, repeat the steps of adjusting the capacity of the generator set based on the second reliability index and the third reliability index, calculating the third reliability index, and calculating the convergence coefficient until the convergence coefficient meets Convergence condition
    根据满足收敛条件时所述发电机组的容量,确定所述并网停车场的可用容量。Determine the available capacity of the grid-connected parking lot according to the capacity of the generator set when the convergence condition is met.
  4. 如权利要求3所述的方法,其中,基于第二可靠性指标和第三可靠性指标按照以下公式计算得到收敛系数α V-GPLThe method according to claim 3, wherein the convergence coefficient α V-GPL is calculated according to the following formula based on the second reliability index and the third reliability index:
    α V-GPL=|I V-I GPL|/I GPL,其中I V为第三可靠性指标,I GPL为第二可靠性指标。 α V-GPL =|I V -I GPL |/I GPL , where I V is the third reliability index, and I GPL is the second reliability index.
  5. 如权利要求2所述的方法,其中,基于第一可靠性指标和第四可靠性指标来确定所述并网停车场的可用容量的步骤包括:The method according to claim 2, wherein the step of determining the available capacity of the grid-connected parking lot based on the first reliability index and the fourth reliability index comprises:
    基于第一可靠性和第四可靠性指标计算收敛系数;Calculate the convergence coefficient based on the first reliability and the fourth reliability index;
    判断收敛系数是否满足收敛条件;Judge whether the convergence coefficient meets the convergence condition;
    在收敛系数不满足收敛条件的情况下,重复基于第一可靠性指标和第四可靠性指标调整所述虚拟负载的容量,计算第四可靠性指标,以及计算收敛系数的步骤,直至收敛系数满足收敛条件;In the case that the convergence coefficient does not meet the convergence condition, repeat the steps of adjusting the capacity of the virtual load based on the first reliability index and the fourth reliability index, calculating the fourth reliability index, and calculating the convergence coefficient until the convergence coefficient meets Convergence condition
    根据满足收敛条件时所述虚拟负载的容量,确定所述并网停车场的可用容量。Determine the available capacity of the grid-connected parking lot according to the capacity of the virtual load when the convergence condition is met.
  6. 如权利要求5所述的方法,其中,基于第一可靠性指标和第四可靠性指标按照以下公式计算得到收敛系数
    Figure PCTCN2020095647-appb-100001
    The method of claim 5, wherein the convergence coefficient is calculated according to the following formula based on the first reliability index and the fourth reliability index
    Figure PCTCN2020095647-appb-100001
    Figure PCTCN2020095647-appb-100002
    其中
    Figure PCTCN2020095647-appb-100003
    为第四可靠性指标,I base为第一可靠性指标。
    Figure PCTCN2020095647-appb-100002
    among them
    Figure PCTCN2020095647-appb-100003
    Is the fourth reliability index, and I base is the first reliability index.
  7. 如权利要求3所述的方法,其中,所述发电机组的容量基于第一参数和第二参数确定,基于第二可靠性指标和第三可靠性指标调整所述发电机组的容量的步骤包括:The method of claim 3, wherein the capacity of the generator set is determined based on the first parameter and the second parameter, and the step of adjusting the capacity of the generator set based on the second reliability index and the third reliability index comprises:
    比较第二可靠性指标和第三可靠性指标;Compare the second reliability index and the third reliability index;
    基于比较结果,根据所述发电机组的当前容量调整所述第一参数或者所述第二参数,以便相应调整所述发电机组的容量。Based on the comparison result, the first parameter or the second parameter is adjusted according to the current capacity of the generator set, so as to adjust the capacity of the generator set accordingly.
  8. 如权利要求5所述的方法,其中,所述发电机组的容量基于第三参数和第四参数确定,基于第一可靠性指标和第四可靠性指标调整所述虚拟负载的容量的步骤包括:The method according to claim 5, wherein the capacity of the generator set is determined based on the third parameter and the fourth parameter, and the step of adjusting the capacity of the virtual load based on the first reliability index and the fourth reliability index comprises:
    比较第一可靠性指标和第四可靠性指标;Compare the first reliability index and the fourth reliability index;
    基于比较结果,基于所述虚拟负载的当前容量修改所述第三参数或者所述第四参数,以便相应调整所述虚拟负载的容量。Based on the comparison result, the third parameter or the fourth parameter is modified based on the current capacity of the virtual load, so as to adjust the capacity of the virtual load accordingly.
  9. 如权利要求3所述的方法,其中,根据满足收敛条件时所述发电机组的容量,确定所述并网停车场的可用容量的步骤包括:The method of claim 3, wherein the step of determining the available capacity of the grid-connected parking lot according to the capacity of the generator set when the convergence condition is met comprises:
    根据所述发电机组的容量,确定所述发电机组的等效固定容量或者等效常规容量,以作为所述并网停车场的可用容量。According to the capacity of the generator set, the equivalent fixed capacity or equivalent conventional capacity of the generator set is determined as the available capacity of the grid-connected parking lot.
  10. 如权利要求5所述的方法,其中,根据满足收敛条件时所述虚拟负载的容量,确定所述并网停车场的可用容量的步骤包括:The method according to claim 5, wherein the step of determining the available capacity of the grid-connected parking lot according to the capacity of the virtual load when the convergence condition is met comprises:
    根据所述虚拟负载的容量,确定所述虚拟负载的有效承载能力,以作为所述并网停车场的可用容量。According to the capacity of the virtual load, the effective carrying capacity of the virtual load is determined as the available capacity of the grid-connected parking lot.
  11. 如权利要求1所述的方法,其中,基于各个仿真年的年度可靠性指标计算所述第二可靠性指标的步骤还包括:The method of claim 1, wherein the step of calculating the second reliability index based on the annual reliability index of each simulation year further comprises:
    基于各个仿真年的年度可靠性指标计算方差系数;Calculate the variance coefficient based on the annual reliability index of each simulation year;
    判断所述方差系数是否满足终止条件;Determine whether the variance coefficient meets the termination condition;
    如果不满足,重复上述获取用户行为特征,确定所述插电式电动汽车的充电和放电时间,计算仿真年的年度可靠性指标,以及计算第二可靠性指标和方差系数的步骤,直至方差系数满足终止条件;If not, repeat the steps of obtaining user behavior characteristics, determining the charging and discharging time of the plug-in electric vehicle, calculating the annual reliability index of the simulation year, and calculating the second reliability index and the coefficient of variance, until the coefficient of variance Meet the termination conditions;
    将满足终止条件时的第二可靠性指标作为最终的第二可靠性指标。The second reliability index when the termination condition is satisfied is used as the final second reliability index.
  12. 如权利要求1所述的方法,其中,还包括:The method of claim 1, further comprising:
    生成所述第一智能配电系统组件的状态持续时间序列;Generating a state duration sequence of the first intelligent power distribution system component;
    确定所述第一智能配电系统在状态持续时间序列中各个时刻的可用发电量。The available power generation of the first intelligent power distribution system at each time in the state duration time sequence is determined.
  13. 如权利要求1-12中任一项所述的方法,其中,采用序贯抽样蒙特卡洛仿真方法来计算第一可靠性指标、第二可靠性指标、第三可靠性指标、以及第四可靠性指标。The method according to any one of claims 1-12, wherein a sequential sampling Monte Carlo simulation method is used to calculate the first reliability index, the second reliability index, the third reliability index, and the fourth reliability index. Sexual indicators.
  14. 如权利要求1-12中任一项所述的方法,其中,所述可靠性指标包括以下中的至少一个:切负荷概率PLC、切负荷频率EFLC、切负荷持续时间EDLC、平均切负荷持续时间ADLC、切负荷期望值ELC、系统停电指标BPII、系统削减电量指标BPECI、严重度指标SI和电量不足期望值EENS。The method according to any one of claims 1-12, wherein the reliability index comprises at least one of the following: load shedding probability PLC, load shedding frequency EFLC, load shedding duration EDLC, average load shedding duration ADLC, load shedding expected value ELC, system power outage indicator BPII, system power reduction indicator BPECI, severity indicator SI, and insufficient battery expected value EENS.
  15. 一种并网停车场的可用容量确定装置,所述并网停车场适于停放插电式电动汽车,并满足所述插电式电动汽车的充放电需求,所述装置包括:A device for determining the available capacity of a grid-connected parking lot, which is suitable for parking plug-in electric vehicles and meets the charging and discharging requirements of the plug-in electric vehicles, the device comprising:
    指标比较单元,适于比较第一智能配电系统的第一可靠性指标和第二智能配电系统的第二可靠性指标,所述第一智能配电系统不包括并网停车场,所述第二智能配电系统通过在所述第一智能配电系统中添加所述并网停车场得到,其中所述指标比较单元还包括指标计算单元,An index comparison unit, adapted to compare the first reliability index of the first smart power distribution system with the second reliability index of the second smart power distribution system, the first smart power distribution system does not include a grid-connected parking lot, the The second smart power distribution system is obtained by adding the grid-connected parking lot to the first smart power distribution system, wherein the index comparison unit further includes an index calculation unit,
    所述指标计算单元适于按照以下步骤计算得到所述第二可靠性指标:The index calculation unit is adapted to calculate the second reliability index according to the following steps:
    获取所述插电式电动汽车的用户行为特征,所述用户行为特征包括所述插电式电动汽车在所述并网停车场的到达时间和停车时间、离开所述并网停车场时所需的充电水平、以及V2G程序可用性;Obtain user behavior characteristics of the plug-in electric vehicle, the user behavior characteristics including the plug-in electric vehicle's arrival time and parking time in the grid-connected parking lot, and the required time when leaving the grid-connected parking lot Charging level and V2G program availability;
    基于所述用户行为特征,确定所述插电式电动汽车的充电和放电时间;Determining the charging and discharging time of the plug-in electric vehicle based on the user behavior characteristics;
    对仿真年的每个时刻,确定并网停车场的可用发电量;确定所述第二智能配电系统的总可用发电量和总负荷需求;采用潮流分析方法,判断第二智能配电系统是否违反约束;基于判断结果,计算所述第二智能 配电系统在该时刻的可靠性指标;For each moment of the simulation year, determine the available power generation of the grid-connected parking lot; determine the total available power generation and total load demand of the second smart power distribution system; use the power flow analysis method to determine whether the second smart power distribution system is Violation of constraints; based on the judgment result, calculating the reliability index of the second intelligent power distribution system at this moment;
    根据多个时刻的可靠性指标,计算所述仿真年的年度可靠性指标;Calculate the annual reliability index of the simulation year according to the reliability index at multiple times;
    基于各个仿真年的年度可靠性指标计算所述第二可靠性指标;Calculating the second reliability index based on the annual reliability index of each simulation year;
    容量确定单元,适于在第一可靠性指标不小于第二可靠性指标的情况下,计算第三智能配电系统的第三可靠性指标,并基于第二可靠性指标和第三可靠性指标来确定所述并网停车场的可用容量,所述第三智能配电系统通过在所述第一智能配电系统中添加发电机组得到。The capacity determining unit is adapted to calculate the third reliability index of the third intelligent power distribution system when the first reliability index is not less than the second reliability index, and based on the second reliability index and the third reliability index To determine the available capacity of the grid-connected parking lot, the third smart power distribution system is obtained by adding a generator set to the first smart power distribution system.
  16. 一种计算设备,包括:A computing device including:
    一个或多个处理器;和One or more processors; and
    存储器;Memory
    一个或多个程序,其中所述一个或多个程序存储在所述存储器中并被配置为由所述一个或多个处理器执行,所述一个或多个程序包括用于执行根据权利要求1-14所述方法中的任一方法的指令。One or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include a program for executing according to claim 1 -14 Instructions for any of the methods described.
  17. 一种存储一个或多个程序的计算机可读存储介质,所述一个或多个程序包括指令,所述指令当计算设备执行时,使得所述计算设备执行根据权利要求1-14所述方法中的任一方法。A computer-readable storage medium storing one or more programs, the one or more programs including instructions, which when executed by a computing device, cause the computing device to perform the method according to claims 1-14 Any method.
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