CN104332990B - A Method for Obtaining Real-time Backup Calibration Quantity of Regional Power Grid - Google Patents

A Method for Obtaining Real-time Backup Calibration Quantity of Regional Power Grid Download PDF

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CN104332990B
CN104332990B CN201410588158.5A CN201410588158A CN104332990B CN 104332990 B CN104332990 B CN 104332990B CN 201410588158 A CN201410588158 A CN 201410588158A CN 104332990 B CN104332990 B CN 104332990B
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励刚
唐拢军
韩俊
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East China Grid Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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Abstract

The invention provides a kind of acquisition real-time standby gauged method of regional power grid, comprise the following steps: obtain standby evaluation index according to standby maximum vacancy value and standby vacancy persistent period;Standby measurement index is obtained according to static frequency mediating effect+6 coefficient, the frequency influence factor, load modifying factor and primary frequency modulation corrected output;The first standby maximum vacancy value and the second standby maximum vacancy value is obtained respectively according to first frequency factor of influence and second frequency factor of influence;With described standby evaluation index, non-firm power maximum vacancy value, standby vacancy persistent period as variable, five regions are set in conjunction with the first standby maximum vacancy value, the second standby maximum vacancy value, regulation backed-up value, the first standby vacancy persistent period and the second standby vacancy persistent period, and set calibration coefficient respectively in these five regions, the corresponding scalar quantity of final acquisition.Present invention achieves and Utilities Electric Co. of provinces and cities is demarcated, promote the lifting of standby working level and efficiency.

Description

一种获取区域电网实时备用标定量的方法A Method for Obtaining Real-time Backup Calibration Quantity of Regional Power Grid

技术领域technical field

本发明涉及电网备用管理领域,尤其是一种获取区域电网实时备用标定量的方法。The invention relates to the field of power grid backup management, in particular to a method for obtaining real-time backup calibration quantities of regional power grids.

背景技术Background technique

为保证电网安全运行和可靠供电,平衡电网负荷偏差、机组跳闸、直流闭锁、电网事故等未来不确定事件引起的电网功率缺额,电力系统实时运行中必须设置一定的备用容量。In order to ensure the safe operation and reliable power supply of the power grid, and to balance the grid power shortage caused by future uncertain events such as grid load deviation, unit tripping, DC blocking, and grid accidents, a certain reserve capacity must be set in the real-time operation of the power system.

随着现代电网步入特高压、远距离、大功率输送时代,大功率电能通过特高压交、直流通道进行大范围输送,将给电网频率控制带来较大的风险隐患。国内外各个区域电网针对运行备用管理的规定中均对备用要求、备用监视、备用调用提出了相应原则和执行标准,但对备用考核却少有具体有效的方法。目前广泛施行的运行备用考核方法包括一次调频考核、DCS考核等。该类考核方法注重于电网发生频率异常或事故后,考察电网调集备用进行支援的能力,采取的是被动管理方式,而对于电网正常运行情况下各主体是否实时满足备用预留要求,现行备用考核方法存在空白。As the modern power grid enters the era of ultra-high voltage, long-distance, and high-power transmission, large-scale transmission of high-power electric energy through UHV AC and DC channels will bring greater risks to grid frequency control. Domestic and foreign regional power grids have put forward corresponding principles and implementation standards for backup requirements, backup monitoring, and backup call in the regulations for operation backup management, but there are few specific and effective methods for backup assessment. At present, the widely implemented operation standby assessment methods include primary frequency modulation assessment, DCS assessment and so on. This type of assessment method focuses on the ability of the power grid to mobilize backup for support after frequency abnormalities or accidents occur, and adopts a passive management method. However, when the power grid is in normal operation, whether each entity meets the requirements for reserve reservation in real time, the current backup assessment Method has gaps.

科学、合理的实时备用考核方法,是备用管理的关键一环,是确保备用相关规定得到严格执行的保障。本发明依据现行区域电网备用管理规定、结合区域电网运行特点和管理模式,提出一种区域电网实时备用考核方法。A scientific and reasonable real-time reserve assessment method is a key part of reserve management and a guarantee to ensure that relevant provisions on reserve are strictly implemented. The present invention proposes a real-time backup assessment method for regional power grids based on the current regional power grid backup management regulations and in combination with regional power grid operation characteristics and management modes.

发明内容Contents of the invention

本发明的目的在于提供一种根据违规事件严重程度划分区域电网并进行相应的标定。The purpose of the present invention is to provide a method for dividing regional power grids according to the severity of violation events and performing corresponding calibration.

为了达到上述目的,本发明提供了一种获取区域电网实时备用标定量的方法,包括以下步骤:In order to achieve the above object, the present invention provides a method for obtaining the real-time standby calibration quantity of the regional power grid, comprising the following steps:

根据备用最大缺额值和备用缺额持续时间获得备用评价指标,以所述备用最大缺额值、备用缺额持续时间和备用评价指标为变量建立备用评价模型;Obtain the backup evaluation index according to the backup maximum gap value and the backup gap duration, and establish a backup evaluation model with the backup maximum gap value, the backup gap duration and the backup evaluation index as variables;

根据静态频率调节效应系数、频率影响因子、负荷修正因子和一次调频修正功率获得备用测量指标;According to the static frequency adjustment effect coefficient, frequency influence factor, load correction factor and primary frequency adjustment correction power, the backup measurement index is obtained;

获得频率影响因子为第一频率影响因子时的第一备用测量指标,所述第一备用测量指标为第一备用最大缺额值,获得频率影响因子为第二频率影响因子时的第二备用测量指标,所述第二备用测量指标为第二备用最大缺额值,设定第一备用缺额持续时间和第二备用缺额持续时间;Obtain the first backup measurement index when the frequency impact factor is the first frequency impact factor, the first backup measurement index is the first backup maximum shortfall value, and obtain the second backup measurement index when the frequency impact factor is the second frequency impact factor , the second backup measurement indicator is the second backup maximum shortfall value, and the first spare shortfall duration and the second spare shortfall duration are set;

当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积、备用功率最大缺额值小于第一备用最大缺额值以及备用缺额持续时间小于第一备用缺额持续时间时,设定第一标定系数,并根据该标定系数和所述备用评价指标获得相应的第一标定量;When the backup evaluation index is less than the product of the first backup maximum shortfall value and the first spare shortfall duration, the maximum spare power shortfall value is less than the first spare maximum shortfall value, and the spare shortfall duration is less than the first spare shortfall duration, the device Determine the first calibration coefficient, and obtain the corresponding first calibration amount according to the calibration coefficient and the standby evaluation index;

当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积且备用功率最大缺额值大于等于第一备用最大缺额值且小于第二备用最大缺额值时,或者当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积且备用缺额持续时间大于等于第一备用缺额持续时间且小于第二备用缺额持续时间时,设定第二标定系数,并根据该标定系数和所述备用评价指标获得相应的第二标定量;When the backup evaluation index is less than the product of the first backup maximum shortfall value and the first backup shortfall duration and the standby power maximum shortfall value is greater than or equal to the first spare maximum shortfall value and less than the second spare maximum shortfall value, or when the When the backup evaluation index is less than the product of the first backup maximum deficit value and the first backup gap duration and the backup gap duration is greater than or equal to the first backup gap duration and less than the second backup gap duration, set the second calibration coefficient, and Obtaining a corresponding second calibration amount according to the calibration coefficient and the backup evaluation index;

当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积、备用功率最大缺额值大于等于第一备用最大缺额值且小于等于规定备用值时,或者当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积、备用缺额持续时间大于等于第二备用缺额持续时间时,又或者当所述备用评价指标大于等于第一备用最大缺额值与第一备用缺额持续时间的乘积且小于第二备用最大缺额值与第二备用缺额持续时间的乘积、备用功率最大缺额值小于第二备用最大缺额值、备用缺额持续时间小于第二备用缺额持续时间时,设定第三标定系数,并根据该标定系数和所述备用评价指标获得相应的第三标定量;When the backup evaluation index is less than the product of the first backup maximum deficit value and the first backup gap duration, the maximum backup power gap value is greater than or equal to the first backup maximum gap value and less than or equal to the specified backup value, or when the backup evaluation When the index is less than the product of the first reserve maximum shortfall value and the first spare shortfall duration, the spare shortfall duration is greater than or equal to the second spare shortfall duration, or when the spare evaluation index is greater than or equal to the first spare maximum shortfall value and the first spare shortfall duration When the product of the first reserve shortfall duration is less than the product of the second spare maximum shortfall value and the second spare shortfall duration, the spare power maximum shortfall value is less than the second spare maximum shortfall value, and the spare shortfall duration is less than the second spare shortfall duration , setting a third calibration coefficient, and obtaining a corresponding third calibration amount according to the calibration coefficient and the backup evaluation index;

当所述备用评价指标大于等于第一备用最大缺额值与第一备用缺额持续时间的乘积且小于第二备用最大缺额值与第二备用缺额持续时间的乘积、备用功率最大缺额值大于等于第一备用最大缺额值且小于等于规定备用值时,或者当所述备用评价指标大于等于第一备用最大缺额值与第一备用缺额持续时间的乘积且小于第二备用最大缺额值与第二备用缺额持续时间的乘积、备用缺额持续时间大于等于第二备用缺额持续时间时,设定第四标定系数,并根据该标定系数和所述备用评价指标获得相应的第四标定量;When the backup evaluation index is greater than or equal to the product of the first backup maximum deficit value and the first backup gap duration and less than the product of the second backup maximum gap value and the second backup gap duration, the maximum backup power gap value is greater than or equal to the first When the reserve maximum deficit value is less than or equal to the specified reserve value, or when the reserve evaluation index is greater than or equal to the product of the first reserve maximum limit value and the first reserve limit duration and is less than the second reserve maximum limit value and the second reserve limit duration When the product of the time and the duration of the reserve gap are greater than or equal to the second duration of the reserve gap, a fourth calibration coefficient is set, and a corresponding fourth calibration amount is obtained according to the calibration coefficient and the backup evaluation index;

当所述备用评价指标大于等于第二备用最大缺额值与第二备用缺额持续时间的乘积时,设定第五标定系数,并根据该标定系数和所述备用评价指标获得相应的第五标定量。When the backup evaluation index is greater than or equal to the product of the second backup maximum shortfall value and the second backup shortfall duration, a fifth calibration coefficient is set, and a corresponding fifth calibration amount is obtained according to the calibration coefficient and the backup evaluation index .

进一步地,所述备用评价指标为RSS,且Further, the backup evaluation index is RSS, and

RSS=Rshortage*TdurationRSS= Rshortage * Tduration ,

其中,Rshortage和Tduration分别为所述备用最大缺额值和备用缺额持续时间。Wherein, R shortage and T duration are respectively the maximum reserve shortfall value and the spare shortfall duration.

进一步地,所述备用测量指标为Rmeasure,且Further, the backup measurement index is R measure , and

Rmeasure=KffL-ε*PcompR measure =K ffL -ε*P comp ,

其中,Kf、αf分别为所述机组静态频率调节系数以及频率影响因子,βL=Lreal/Lforecast,βL为所述负荷修正因子,Lreal为实时负荷,Lforecast为最大预计负荷,ε*Pcomp为所述一次调频修正功率, &epsiv; = 1 f < f d 0 f &GreaterEqual; f d , f为机组频率,fd为死区频率,Pcomp=Kf*(f0-f),f0为基准频率。Among them, K f and α f are the static frequency adjustment coefficient and frequency impact factor of the unit respectively, β L =L real /L forecast , β L is the load correction factor, L real is the real-time load, and L forecast is the maximum forecast load, ε*P comp is the primary frequency modulation correction power, &epsiv; = 1 f < f d 0 f &Greater Equal; f d , f is the unit frequency, f d is the dead zone frequency, P comp =K f *(f 0 -f), and f 0 is the reference frequency.

进一步地,所述第一频率影响因子为αf1,且αf1=0.05,所述第一频率影响因子为αf2,且αf2=0.1,所述第一备用最大缺额值和第二备用最大缺额值分别为Rmeasure1和Rmeasure2,且Further, the first frequency influencing factor is α f1 , and α f1 =0.05, the first frequency influencing factor is α f2 , and α f2 =0.1, the first backup maximum deficit value and the second backup maximum The shortfall values are R measure1 and R measure2 respectively , and

Rmeasure1=Kff1L-ε*Pcomp,Rmeasure2=Kff2L-ε*PcompR measure1 =K ff1L -ε*P comp , R measure2 =K ff2L -ε*P comp .

进一步地,当RSS<Rmeasure1*Tduration1、Rshortage<Rmeasure1、Tduration<Tduration1时,所述第一标定量为:Further, when RSS<R measure1 *T duration1 , R shortage <R measure1 , T duration <T duration1 , the first calibration amount is:

Cp1=Pp1*RSS,C p1 =P p1 *RSS,

其中,Tduration1为所述第一备用缺额持续时间,Tduration1=10分钟,fd=49.967赫兹,f0=50赫兹,Pp1为所述第一标定系数,且Pp1=0。Wherein, T duration1 is the duration of the first backup shortfall, T duration1 =10 minutes, f d =49.967 Hz, f 0 =50 Hz, P p1 is the first calibration coefficient, and P p1 =0.

进一步地,当RSS<Rmeasure1*Tduration1、Rmeasure1≤Rshortage<Rmeasure2Further, when RSS<R measure1 *T duration1 , R measure1 ≤R shortage <R measure2 or

RSS<Rmeasure1*Tduration1、Tduration1≤Tduration<Tduration2时,所述第二标定量为:When RSS<R measure1 *T duration1 , T duration1 ≤T duration <T duration2 , the second calibration value is:

Cp2=Pp2*RSS,C p2 =P p2 *RSS,

其中,Tduration1和Tduration2分别为所述第一备用缺额持续时间和第二备用缺额持续时间,Tduration1=10分钟,Tduration2=30分钟,fd=49.967赫兹,f0=50赫兹,Pp2为所述第二标定系数,且Pp1=0.5。Wherein, T duration1 and T duration2 are respectively the duration of the first backup gap and the duration of the second backup gap, T duration1 = 10 minutes, T duration2 = 30 minutes, f d = 49.967 Hz, f 0 = 50 Hz, P p2 is the second calibration coefficient, and P p1 =0.5.

进一步地,当RSS<Rmeasure1*Tduration1、Rmeasure2≤Rshortage≤RmandatoryFurther, when RSS<R measure1 *T duration1 , R measure2 ≤R shortage ≤R mandatory or

RSS<Rmeasure1*Tduration1、Tduration≥Tduration2RSS<R measure1 *T duration1 , T duration ≥T duration2 or

Rmeasure1*Tduration1≤RSS<Rmeasure2*Tduration2、Rshortage Rmeasure2、Tduration<Tduration2时,所述第三标定量为:When R measure1 *T duration1 ≤ RSS<R measure2 *T duration2 , R shortage R measure2 , and T duration <T duration2 , the third calibration value is:

Cp3=Pp3*RSS,C p3 =P p3 *RSS,

其中,Tduration1和Tduration2分别为所述第一备用缺额持续时间和第二备用缺额持续时间,Rmandatory为所述规定备用值,Tduration1=10分钟,Tduration2=30分钟,fd=49.967赫兹,f0=50赫兹,Pp3为所述第三标定系数,且Pp3=1。Wherein, T duration1 and T duration2 are respectively the duration of the first backup shortage and the duration of the second backup gap, R mandatory is the specified backup value, T duration1 = 10 minutes, T duration2 = 30 minutes, f d = 49.967 Hertz, f 0 =50 Hz, P p3 is the third calibration coefficient, and P p3 =1.

进一步地,当Rmeasure1*Tduration1≤RSS<Rmeasure2*Tduration2、Rmeasure2≤Rshortage≤RmandatoryFurther, when R measure1 *T duration1 ≤RSS<R measure2 *T duration2 , R measure2 ≤R shortage ≤R mandatory or

Rmeasure1*Tduration1≤RSS<Rmeasure2*Tduration2、Tduration≥Tduration2时,所述第四标定量为:When R measure1 *T duration1 ≤RSS<R measure2 *T duration2 and T duration ≥T duration2 , the fourth calibration value is:

Cp4=Pp4*RSS,C p4 =P p4 *RSS,

其中,Tduration1和Tduration2分别为所述第一备用缺额持续时间和第二备用缺额持续时间,Rmandatory为所述规定备用值,Tduration1=10分钟,Tduration2=30分钟,fd=49.967赫兹,f0=50赫兹,Pp4为所述第四标定系数,且Pp4=2。Wherein, T duration1 and T duration2 are respectively the duration of the first backup shortage and the duration of the second backup gap, R mandatory is the specified backup value, T duration1 = 10 minutes, T duration2 = 30 minutes, f d = 49.967 Hertz, f 0 =50 Hz, P p4 is the fourth calibration coefficient, and P p4 =2.

进一步地,当RSS≥Rmeasure2*Tduration2时,所述第五标定量为:Further, when RSS≥R measure2 *T duration2 , the fifth calibration value is:

Cp5=Pp5*RSS,C p5 =P p5 *RSS,

其中,Tduration2为所述第二备用缺额持续时间,Tduration2=30分钟,fd=49.967赫兹,f0=50赫兹,Pp5为所述第五标定系数,且Pp5=3。Wherein, T duration2 is the duration of the second backup shortfall, T duration2 =30 minutes, f d =49.967 Hz, f 0 =50 Hz, P p5 is the fifth calibration coefficient, and P p5 =3.

针对电网现行备用考核体系中实时备用考核方面的空缺,本发明提出一种获取区域电网实时备用标定量的方法。该方法依照电网运行备用相关规定,以时间和备用缺额数据为基础绘制反函数的考核曲线,通过自动化监测手段,实现在考核周期内,对省市电力公司进行标定,能够规范并指导各电网主体进一步重视并做好备用工作,促进备用工作水平和效率的提升。Aiming at the lack of real-time backup assessment in the current backup assessment system of the power grid, the invention proposes a method for obtaining the real-time backup calibration quantity of the regional power grid. In accordance with the relevant regulations on power grid operation and backup, the method draws the assessment curve of the inverse function based on time and reserve gap data, and realizes the calibration of provincial and municipal power companies within the assessment cycle through automatic monitoring methods, which can regulate and guide the main body of the power grid Further pay attention to and do a good job in backup work, and promote the improvement of backup work level and efficiency.

附图说明Description of drawings

图1为本发明实施例提供的标定区域示意图。FIG. 1 is a schematic diagram of a calibration area provided by an embodiment of the present invention.

其中,Ⅰ:第一区域,Ⅱ:第二区域,Ⅲ:第三区域,Ⅴ:第四区域,Ⅵ:第五区域。Among them, I: the first area, II: the second area, III: the third area, V: the fourth area, and VI: the fifth area.

具体实施方式detailed description

下面将结合示意图对本发明的具体实施方式进行更详细的描述。根据下列描述和权利要求书,本发明的优点和特征将更清楚。需说明的是,附图均采用非常简化的形式且均使用非精准的比例,仅用以方便、明晰地辅助说明本发明实施例的目的。The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

在本实施例中,考核备用指各省市控制区实时备用值,考核事件指各省市控制区考核备用值低于规定备用值,考核周期指规定某一时间段内对考核情况进行统计,按月为最小周期单位,备用恢复期为考核事件发生后,备用值恢复至规定备用的最长允许时间。In this embodiment, the assessment reserve refers to the real-time reserve value of each province and city control area, the assessment event refers to the assessment reserve value of each province and city control area is lower than the specified reserve value, and the assessment cycle refers to the statistics of the assessment situation within a specified period of time, monthly It is the smallest cycle unit, and the backup recovery period is the maximum allowable time for the backup value to return to the specified backup after the assessment event occurs.

本发明提供了一种获取区域电网实时备用标定量的方法,包括以下步骤:The invention provides a method for obtaining the real-time standby calibration quantity of the regional power grid, comprising the following steps:

根据备用最大缺额值和备用缺额持续时间获得备用评价指标,以所述备用最大缺额值、备用缺额持续时间和备用评价指标为变量建立备用评价模型;Obtain the backup evaluation index according to the backup maximum gap value and the backup gap duration, and establish a backup evaluation model with the backup maximum gap value, the backup gap duration and the backup evaluation index as variables;

根据静态频率调节效应系数、频率影响因子、负荷修正因子和一次调频修正功率获得备用测量指标;According to the static frequency adjustment effect coefficient, frequency influence factor, load correction factor and primary frequency adjustment correction power, the backup measurement index is obtained;

获得频率影响因子为第一频率影响因子时的第一备用测量指标,所述第一备用测量指标为第一备用最大缺额值,获得频率影响因子为第二频率影响因子时的第二备用测量指标,所述第二备用测量指标为第二备用最大缺额值,设定第一备用缺额持续时间和第二备用缺额持续时间;Obtain the first backup measurement index when the frequency impact factor is the first frequency impact factor, the first backup measurement index is the first backup maximum shortfall value, and obtain the second backup measurement index when the frequency impact factor is the second frequency impact factor , the second backup measurement indicator is the second backup maximum shortfall value, and the first spare shortfall duration and the second spare shortfall duration are set;

当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积、备用功率最大缺额值小于第一备用最大缺额值以及备用缺额持续时间小于第一备用缺额持续时间时,设定第一标定系数,并根据该标定系数和所述备用评价指标获得相应的第一标定量;When the backup evaluation index is less than the product of the first backup maximum shortfall value and the first spare shortfall duration, the maximum spare power shortfall value is less than the first spare maximum shortfall value, and the spare shortfall duration is less than the first spare shortfall duration, the device Determine the first calibration coefficient, and obtain the corresponding first calibration amount according to the calibration coefficient and the standby evaluation index;

当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积且备用功率最大缺额值大于等于第一备用最大缺额值且小于第二备用最大缺额值时,或者当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积且备用缺额持续时间大于等于第一备用缺额持续时间且小于第二备用缺额持续时间时,设定第二标定系数,并根据该标定系数和所述备用评价指标获得相应的第二标定量;When the backup evaluation index is less than the product of the first backup maximum shortfall value and the first backup shortfall duration and the standby power maximum shortfall value is greater than or equal to the first spare maximum shortfall value and less than the second spare maximum shortfall value, or when the When the backup evaluation index is less than the product of the first backup maximum deficit value and the first backup gap duration and the backup gap duration is greater than or equal to the first backup gap duration and less than the second backup gap duration, set the second calibration coefficient, and Obtaining a corresponding second calibration amount according to the calibration coefficient and the backup evaluation index;

当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积、备用功率最大缺额值大于等于第一备用最大缺额值且小于等于规定备用值时,或者当所述备用评价指标小于第一备用最大缺额值与第一备用缺额持续时间的乘积、备用缺额持续时间大于等于第二备用缺额持续时间时,又或者当所述备用评价指标大于等于第一备用最大缺额值与第一备用缺额持续时间的乘积且小于第二备用最大缺额值与第二备用缺额持续时间的乘积、备用功率最大缺额值小于第二备用最大缺额值、备用缺额持续时间小于第二备用缺额持续时间时,设定第三标定系数,并根据该标定系数和所述备用评价指标获得相应的第三标定量;When the backup evaluation index is less than the product of the first backup maximum deficit value and the first backup gap duration, the maximum backup power gap value is greater than or equal to the first backup maximum gap value and less than or equal to the specified backup value, or when the backup evaluation When the index is less than the product of the first reserve maximum shortfall value and the first spare shortfall duration, the spare shortfall duration is greater than or equal to the second spare shortfall duration, or when the spare evaluation index is greater than or equal to the first spare maximum shortfall value and the first spare shortfall duration When the product of the first reserve shortfall duration is less than the product of the second spare maximum shortfall value and the second spare shortfall duration, the spare power maximum shortfall value is less than the second spare maximum shortfall value, and the spare shortfall duration is less than the second spare shortfall duration , setting a third calibration coefficient, and obtaining a corresponding third calibration amount according to the calibration coefficient and the backup evaluation index;

当所述备用评价指标大于等于第一备用最大缺额值与第一备用缺额持续时间的乘积且小于第二备用最大缺额值与第二备用缺额持续时间的乘积、备用功率最大缺额值大于等于第一备用最大缺额值且小于等于规定备用值时,或者当所述备用评价指标大于等于第一备用最大缺额值与第一备用缺额持续时间的乘积且小于第二备用最大缺额值与第二备用缺额持续时间的乘积、备用缺额持续时间大于等于第二备用缺额持续时间时,设定第四标定系数,并根据该标定系数和所述备用评价指标获得相应的第四标定量;When the backup evaluation index is greater than or equal to the product of the first backup maximum deficit value and the first backup gap duration and less than the product of the second backup maximum gap value and the second backup gap duration, the maximum backup power gap value is greater than or equal to the first When the reserve maximum deficit value is less than or equal to the specified reserve value, or when the reserve evaluation index is greater than or equal to the product of the first reserve maximum limit value and the first reserve limit duration and is less than the second reserve maximum limit value and the second reserve limit duration When the product of the time and the duration of the reserve gap are greater than or equal to the second duration of the reserve gap, a fourth calibration coefficient is set, and a corresponding fourth calibration amount is obtained according to the calibration coefficient and the backup evaluation index;

当所述备用评价指标大于等于第二备用最大缺额值与第二备用缺额持续时间的乘积时,设定第五标定系数,并根据该标定系数和所述备用评价指标获得相应的第五标定量。When the backup evaluation index is greater than or equal to the product of the second backup maximum shortfall value and the second backup shortfall duration, a fifth calibration coefficient is set, and a corresponding fifth calibration amount is obtained according to the calibration coefficient and the backup evaluation index .

所述备用评价指标为RSS,且The backup evaluation index is RSS, and

RSS=Rshortage*TdurationRSS= Rshortage * Tduration ,

其中,Rshortage和Tduration分别为所述备用功率最大缺额值和备用缺额持续时间。Wherein, Rshortage and Tduration are respectively the maximum shortfall value of the standby power and the duration of the shortfall.

所述备用测量指标为Rmeasure,且The backup measurement index is R measure , and

Rmeasure=KffL-ε*PcompR measure =K ffL -ε*P comp ,

其中,Kf、αf分别为所述机组静态频率调节系数以及频率影响因子,βL=Lreal/Lforecast,βL为所述负荷修正因子,Lreal为实时负荷,Lforecast为最大预计负荷,ε*Pcomp为所述一次调频修正功率, &epsiv; = 1 f < f d 0 f &GreaterEqual; f d , f为机组频率,fd为死区频率,Pcomp=Kf*(f0-f),f0为基准频率。Among them, K f and α f are the static frequency adjustment coefficient and frequency impact factor of the unit respectively, β L =L real /L forecast , β L is the load correction factor, L real is the real-time load, and L forecast is the maximum forecast load, ε*P comp is the primary frequency modulation correction power, &epsiv; = 1 f < f d 0 f &Greater Equal; f d , f is the unit frequency, f d is the dead zone frequency, P comp =K f *(f 0 -f), and f 0 is the reference frequency.

所述第一频率影响因子为αf1,且αf1=0.05,所述第一频率影响因子为αf2,且αf2=0.1,所述第一备用最大缺额值和第二备用最大缺额值分别为Rmeasure1和Rmeasure2,且The first frequency influencing factor is α f1 , and α f1 =0.05, the first frequency influencing factor is α f2 , and α f2 =0.1, and the first backup maximum deficit value and the second backup maximum deficit value are respectively for R measure1 and R measure2 , and

Rmeasure1=Kff1L-ε*Pcomp,Rmeasure2=Kff2L-ε*PcompR measure1 =K ff1L -ε*P comp , R measure2 =K ff2L -ε*P comp .

所述第一备用缺额持续时间和第二备用缺额持续时间分别为Tduration1和Tduration2,Rmandatory为已知的所述规定备用值,Tduration1=10分钟,Tduration2=30分钟,fd=49.967赫兹,f0=50赫兹。The first standby short duration and the second spare short duration are T duration1 and T duration2 respectively, R mandatory is the known specified spare value, T duration1 = 10 minutes, T duration2 = 30 minutes, f d = 49.967 Hz, f 0 =50 Hz.

以Tduration为x轴、Rshortage为y轴、RSS为z轴建立三维空间直角坐标系,结合Rmeasure1、Rmeasure2、Tduration1、Tduration2和Rmandatory将空间划分出若干个区域,如图1所示,这些区域在xy平面第一象限上的投影会被划分出5个区域,即为第一区域Ⅰ、第二区域Ⅱ、第三区域Ⅲ、第四区域Ⅴ和第五区域Ⅵ。此外,图1中的两条曲线即为本发明以时间(即为Tduration)和备用缺额数据(即为Rshortage)为基础绘制反函数的考核曲线(即为RSS在xy平面的投影曲线),T1即为Tduration1,T2即为Tduration2Take T duration as the x-axis, R shortage as the y-axis, and RSS as the z-axis to establish a three-dimensional space Cartesian coordinate system, and combine R measure1 , R measure2 , T duration1 , T duration2 and R mandatory to divide the space into several areas, as shown in Figure 1 As shown, the projection of these areas on the first quadrant of the xy plane will be divided into five areas, namely the first area I, the second area II, the third area III, the fourth area V and the fifth area VI. In addition, the two curves in Fig. 1 are the evaluation curves (that is, the projection curve of RSS on the xy plane) based on the time (that is, T duration ) and the spare shortage data (that is, R shortage ) to draw the inverse function of the present invention. , T 1 is T duration1 , and T 2 is T duration2 .

当RSS<Rmeasure1*Tduration1、Rshortage<Rmeasure1、Tduration<Tduration1时(其划分的区域在xy平面第一象限的投影为图1中的第一区域Ⅰ),所述第一标定量为:When RSS<R measure1 *T duration1 , R shortage <R measure1 , T duration <T duration1 (the projection of the divided area on the first quadrant of the xy plane is the first area I in Figure 1), the first standard Quantified as:

Cp1=Pp1*RSS,C p1 =P p1 *RSS,

其中,Pp1为所述第一标定系数,且Pp1=0。Wherein, P p1 is the first calibration coefficient, and P p1 =0.

当RSS<Rmeasure1*Tduration1、Rmeasure1≤Rshortage<Rmeasure2When RSS<R measure1 *T duration1 , R measure1 ≤R shortage <R measure2 or

RSS<Rmeasure1*Tduration1、Tduration1≤Tduration<Tduration2时(其划分的区域在xy平面第一象限的投影为图1中的第二区域Ⅱ),所述第二标定量为:When RSS<R measure1 *T duration1 , T duration1 ≤T duration <T duration2 (the projection of the divided area on the first quadrant of the xy plane is the second area II in Figure 1), the second calibration amount is:

Cp2=Pp2*RSS,C p2 =P p2 *RSS,

其中,Pp2为所述第二标定系数,且Pp1=0.5。Wherein, P p2 is the second calibration coefficient, and P p1 =0.5.

当RSS<Rmeasure1*Tduration1、Rmeasure2≤Rshortage≤RmandatoryWhen RSS<R measure1 *T duration1 , R measure2 ≤R shortage ≤R mandatory or

RSS<Rmeasure1*Tduration1、Tduration≥Tduration2RSS<R measure1 *T duration1 , T duration ≥T duration2 or

Rmeasure1*Tduration1≤RSS<Rmeasure2*Tduration2、Rshortage<Rmesuree2、Tduration<Tduration2时(其划分的区域在xy平面第一象限的投影为图1中的第三区域Ⅲ),所述第三标定量为:When R measure1 *T duration1 ≤RSS<R measure2 *T duration2 , R shortage <R mesuree2 , T duration <T duration2 (the projection of the divided area on the first quadrant of the xy plane is the third area III in Figure 1), The third calibration quantity is:

Cp3=Pp3*RSS,C p3 =P p3 *RSS,

其中,Pp3为所述第三标定系数,且Pp3=1。Wherein, P p3 is the third calibration coefficient, and P p3 =1.

当Rmeasure1*Tduration1≤RSS<Rmeasure2*Tduration2、Rmeasure2≤Rshortage≤RmandatoryWhen R measure1 *T duration1 ≤RSS<R measure2 *T duration2 , R measure2 ≤R shortage ≤R mandatory or

Rmeasure1*Tduration1≤RSS<Rmeasure2*Tduration2、Tduration≥Tduration2时(其划分的区域在xy平面第一象限的投影为图1中的第四区域Ⅴ),所述第四标定量为:When R measure1 *T duration1 ≤RSS<R measure2 *T duration2 , T duration ≥T duration2 (the projection of the divided area on the first quadrant of the xy plane is the fourth area V in Figure 1), the fourth calibration amount for:

Cp4=Pp4*RSS,C p4 =P p4 *RSS,

其中,Pp4为所述第四标定系数,且Pp4=2。Wherein, P p4 is the fourth calibration coefficient, and P p4 =2.

当RSS≥Rmeasure2*Tduration2时(其划分的区域在xy平面第一象限的投影为图1中的第五区域Ⅵ),所述第五标定量为:When RSS≥R measure2 *T duration2 (the projection of the divided area on the first quadrant of the xy plane is the fifth area VI in Figure 1), the fifth calibration quantity is:

Cp5=Pp5*RSS,C p5 =P p5 *RSS,

其中,Pp5为所述第五标定系数,且Pp5=3。Wherein, P p5 is the fifth calibration coefficient, and P p5 =3.

根据省市电力公司的实际运行情况,获得第一区域Ⅰ、第二区域Ⅱ、第三区域Ⅲ、第四区域Ⅴ和第五区域Ⅵ的标定量,当标定量越小时,则该省市电力公司电网调集备用进行支援的能力越好,发生严重违规事件的概率越小。According to the actual operation conditions of provincial and municipal power companies, the calibration quantities of the first area I, the second area II, the third area III, the fourth area V and the fifth area VI are obtained. The better the ability of the company's power grid to mobilize backup for support, the lower the probability of serious violations.

综上,针对电网现行备用考核体系中实时备用考核方面的空缺,本发明提出一种获取区域电网实时备用标定量的方法。该方法依照电网运行备用相关规定,以时间和备用缺额数据为基础绘制反函数的考核曲线,通过自动化监测手段,实现在考核周期内,对省市电力公司进行标定,能够规范并指导各电网主体进一步重视并做好备用工作,促进备用工作水平和效率的提升。To sum up, aiming at the lack of real-time backup evaluation in the current backup evaluation system of the power grid, the present invention proposes a method for obtaining the real-time backup calibration amount of the regional power grid. In accordance with the relevant regulations on power grid operation and backup, the method draws the assessment curve of the inverse function based on time and reserve gap data, and realizes the calibration of provincial and municipal power companies within the assessment cycle through automatic monitoring methods, which can regulate and guide the main body of the power grid Further pay attention to and do a good job in backup work, and promote the improvement of backup work level and efficiency.

上述仅为本发明的优选实施例而已,并不对本发明起到任何限制作用。任何所属技术领域的技术人员,在不脱离本发明的技术方案的范围内,对本发明揭露的技术方案和技术内容做任何形式的等同替换或修改等变动,均属未脱离本发明的技术方案的内容,仍属于本发明的保护范围之内。The foregoing are only preferred embodiments of the present invention, and do not limit the present invention in any way. Any person skilled in the technical field, without departing from the scope of the technical solution of the present invention, makes any form of equivalent replacement or modification to the technical solution and technical content disclosed in the present invention, which does not depart from the technical solution of the present invention. The content still belongs to the protection scope of the present invention.

Claims (9)

1. one kind obtains the real-time standby gauged method of regional power grid, it is characterised in that comprise the following steps:
According to standby PowerMaximum vacancy value and standby vacancy persistent period obtain standby evaluation index, with described standby PowerMaximum vacancy value, standby vacancy persistent period and standby evaluation index are that variable sets up standby evaluation model;
Standby measurement index is obtained according to static frequency mediating effect+6 coefficient, the frequency influence factor, load modifying factor and primary frequency modulation corrected output;
Obtaining the frequency influence factor is the standby measurement index of first during first frequency factor of influence, described first standby measurement index is the first standby maximum vacancy value, obtaining the frequency influence factor is the standby measurement index of second during second frequency factor of influence, described second standby measurement index is the second standby maximum vacancy value, sets the first standby vacancy persistent period and the second standby vacancy persistent period;
When described standby evaluation index is less than the first standby maximum vacancy value and the product of the first standby vacancy persistent period, non-firm power maximum vacancy value maximum vacancy value standby less than first and standby vacancy persistent period were less than for the first standby vacancy persistent period, set the first calibration coefficient, and obtain corresponding first scalar quantity according to this calibration coefficient and described standby evaluation index;
When described standby evaluation index maximum vacancy value standby less than first maximum vacancy value standby more than or equal to first with the product of the first standby vacancy persistent period and non-firm power maximum vacancy value and maximum vacancy value standby less than second, or when described standby evaluation index maximum vacancy value standby less than first was more than or equal to for the first standby vacancy persistent period with the product of the first standby vacancy persistent period and standby vacancy persistent period and was less than for the second standby vacancy persistent period, set the second calibration coefficient, and obtain corresponding second scalar quantity according to this calibration coefficient and described standby evaluation index;
nullProduct when described standby evaluation index maximum vacancy value standby less than first with the first standby vacancy persistent period、Non-firm power maximum vacancy value is more than or equal to the first standby maximum vacancy value and less than or equal to when specifying backed-up value,Or the product when described standby evaluation index maximum vacancy value standby less than first with the first standby vacancy persistent period、When the standby vacancy persistent period is more than or equal to the second standby vacancy persistent period,Or when described standby evaluation index is more than or equal to the first standby maximum vacancy value and the product of the first standby vacancy persistent period and maximum vacancy value standby less than second and the product of the second standby vacancy persistent period、Non-firm power maximum vacancy value maximum vacancy value standby less than second、When the standby vacancy persistent period is less than the second standby vacancy persistent period,Set the 3rd calibration coefficient,And obtain corresponding 3rd scalar quantity according to this calibration coefficient and described standby evaluation index;
When described standby evaluation index is more than or equal to the first standby maximum vacancy value and the product of the first standby vacancy persistent period and maximum vacancy value standby less than second and the product of the second standby vacancy persistent period, non-firm power maximum vacancy value is more than or equal to the first standby maximum vacancy value and less than or equal to when specifying backed-up value, or when described standby evaluation index is more than or equal to the first standby maximum vacancy value and the product of the first standby vacancy persistent period and maximum vacancy value standby less than second and the product of the second standby vacancy persistent period, when the standby vacancy persistent period is more than or equal to the second standby vacancy persistent period, set the 4th calibration coefficient, and obtain corresponding 4th scalar quantity according to this calibration coefficient and described standby evaluation index;
When described standby evaluation index maximum vacancy value standby more than or equal to second and the product of the second standby vacancy persistent period, set the 5th calibration coefficient, and obtain corresponding 5th scalar quantity according to this calibration coefficient and described standby evaluation index.
2. the acquisition real-time standby gauged method of regional power grid as claimed in claim 1, it is characterised in that described standby evaluation index is RSS, and
RSS=Rshortage*Tduration,
Wherein, RshortageAnd TdurationIt is respectively described standbyPowerMaximum vacancy value and standby vacancy persistent period.
3. the acquisition real-time standby gauged method of regional power grid as claimed in claim 2, it is characterised in that described standby measurement index is Rmeasure, and
Rmeasure=KffL-ε*Pcomp,
Wherein, Kf、αfIt is respectively unit static frequency adjustment factor and the frequency influence factor, βL=Lreal/Lforecast, βLFor described load modifying factor, LrealFor Real-time Load, LforecastFor largest anticipated load, ε * PcompFor described primary frequency modulation corrected output,F is machine class frequency, fdFor dead band frequency, Pcomp=Kf*(f0-f), f0On the basis of frequency.
4. the acquisition real-time standby gauged method of regional power grid as claimed in claim 3, it is characterised in that described first frequency factor of influence is αf1, and αf1=0.05, described second frequency factor of influence is αf2, and αf2=0.1, described first standby maximum vacancy value and the second standby maximum vacancy value are respectively Rmeasure1And Rmeasure2, and
Rmeasure1=Kff1L-ε*Pcomp, Rmeasure2=Kff2L-ε*Pcomp
5. the acquisition real-time standby gauged method of regional power grid as claimed in claim 4, it is characterised in that as RSS < Rmeasure1*Tduration1、Rshortage< Rmeasure1And Tduration<Tduration1Time, described first scalar quantity is:
Cp1=Pp1* RSS,
Wherein, Tduration1For described first standby vacancy persistent period, Tduration1=10 minutes, fd=49.967 hertz, f0=50 hertz, Pp1For described first calibration coefficient, and Pp1=0.
6. the acquisition real-time standby gauged method of regional power grid as claimed in claim 4, it is characterised in that as RSS < Rmeasure1*Tduration1、Rmeasure1≤Rshortage< Rmeasure2Or
RSS<Rmeasure1*Tduration1、Tduration1≤Tduration<Tduration2Time, described second scalar quantity is:
Cp2=Pp2* RSS,
Wherein, Tduration1And Tduration2It is respectively described first standby vacancy persistent period and the second standby vacancy persistent period, Tduration1=10 minutes, Tduration2=30 minutes, fd=49.967 hertz, f0=50 hertz, Pp2For described second calibration coefficient, and Pp1=0.5.
7. the acquisition real-time standby gauged method of regional power grid as claimed in claim 4, it is characterised in that as RSS < Rmeasure1*Tduration1、Rmeasure2≤Rshortage≤RmandatoryOr
RSS<Rmeasure1*Tduration1、Tduration≥Tduration2Or
Rmeasure1*Tduration1≤RSS<Rmeasure2*Tduration2、Rshortage< Rmeasure2、Tduration<Tduration2Time, described 3rd scalar quantity is:
Cp3=Pp3* RSS,
Wherein, Tduration1And Tduration2It is respectively described first standby vacancy persistent period and the second standby vacancy persistent period, RmandatoryFor described regulation backed-up value, Tduration1=10 minutes, Tduration2=30 minutes, fd=49.967 hertz, f0=50 hertz, Pp3For described 3rd calibration coefficient, and Pp3=1.
8. the acquisition real-time standby gauged method of regional power grid as claimed in claim 4, it is characterised in that work as Rmeasure1*Tduration1≤RSS<Rmeasure2*Tduration2、Rmeasure2≤Rshortage≤RmandatoryOr
Rmeasure1*Tduration1≤RSS<Rmeasure2*Tduration2、Tduration≥Tduration2Time, described 4th scalar quantity is:
Cp4=Pp4* RSS,
Wherein, Tduration1And Tduration2It is respectively described first standby vacancy persistent period and the second standby vacancy persistent period, RmandatoryFor described regulation backed-up value, Tduration1=10 minutes, Tduration2=30 minutes, fd=49.967 hertz, f0=50 hertz, Pp4For described 4th calibration coefficient, and Pp4=2.
9. the acquisition real-time standby gauged method of regional power grid as claimed in claim 4, it is characterised in that as RSS >=Rmeasure2*Tduration2Time, described 5th scalar quantity is:
Cp5=Pp5* RSS,
Wherein, Tduration2For described second standby vacancy persistent period, Tduration2=30 minutes, fd=49.967 hertz, f0=50 hertz, Pp5For described 5th calibration coefficient, and Pp5=3.
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