CN101615795B - Method for determining setting parameter in VQC system - Google Patents
Method for determining setting parameter in VQC system Download PDFInfo
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- CN101615795B CN101615795B CN2008100396592A CN200810039659A CN101615795B CN 101615795 B CN101615795 B CN 101615795B CN 2008100396592 A CN2008100396592 A CN 2008100396592A CN 200810039659 A CN200810039659 A CN 200810039659A CN 101615795 B CN101615795 B CN 101615795B
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Abstract
The invention discloses a method for determining a setting parameter in a VQC system. The VQC system is used for controlling a main variational joint and a capacitor by using a 17-area chart control policy. The coordinates of a 17-area chart are a coordinates in a first quadrant of a coordinate taking voltage U as a vertical coordinate and reactive power Q as a horizontal ordinate. The area is divided into 17 parts which are 1st to 17th areas respectively. A lower limit value, an auxiliary lower limit value, an auxiliary upper value and an upper value are set for the horizontal ordinate from minimum to maximum in sequence; and a lower limit value, an auxiliary lower limit value, an auxiliary upper value and an upper value are set for the vertical ordinate from the lower side to the upper side in sequence. The method comprises the following steps of: setting a boundary of the voltage U; setting boundary of the reactive power Q; determining action parameters of the main variational joint; and determining parameters of the capacitor. The method can set the setting parameter of the VQC system and can ensure the accuracy and the stability of the control.
Description
Technical field
The present invention relates to a kind of definite method of setting parameter, relate in particular to definite method of the setting parameter of a kind of VQC (voltage and reactive power control) system.
Technical background
The direct control that influences the substation bus bar voltage of VQC of adjusting of the lower voltage limit in 17 districts, the auxiliary lower limit of voltage, the auxiliary upper limit of voltage, upper voltage limit is very important; Idle lower limit, idle auxiliary lower limit, the idle auxiliary upper limit, the idle upper limit have then determined VQC for the idle optimal control of transformer station; Allowing the effect of action frequency and loaded switch action blanking time loaded switch day is a setting of taking in order to prevent the loaded switch frequent movement, how to prevent the loaded switch frequent movement and don't influence VQC for load tapchanging function, need us to determine the rational and effective setting value according to the ruuning situation of transformer station's reality, same capacitor also will be adjusted accordingly.
Summary of the invention
The object of the present invention is to provide definite method of the setting parameter of a kind of VQC system, this method setting parameter of VQC system of can adjusting guarantees accuracy and the stability of control.
The technical scheme that realizes above-mentioned purpose is: definite method of setting parameter in a kind of VQC system, this VQC system is used for main transformer tap and capacitor are controlled, it is controlled by 17 district's figure control strategies, described 17 district figure are voltage U by ordinate, abscissa is the coordinate that reactive power Q constitutes in first quartile, this zone is divided into 17, be respectively 1～17 district, abscissa is from the little lower limit Qmin that extremely is disposed with greatly, auxiliary lower limit Qmif, auxiliary higher limit Qmxf and higher limit Qmxn, ordinate is disposed with lower limit Vmin from bottom to up, auxiliary lower limit Vmif, auxiliary higher limit Vmxf and higher limit Vmxn, wherein, it may further comprise the steps:
The border of setting voltage U, the border of voltage U are set and are comprised capping value Vmxn, lower limit Vmin, auxiliary higher limit Vmxf and auxiliary lower limit Vmif, wherein:
Vmin＝10.1KV； Vmxn＝10.6KV；
Vmif＝10.2KV； Vmxf＝10.5KV；
Set the border of reactive power Q, the border of reactive power Q is set and is comprised preset lower limit Qmin, auxiliary lower limit Qmif, auxiliary higher limit Qmxf and higher limit Qmxn, wherein:
Qmin=0Mvar; Qmxn=Q (greatly) * 1.1 times,
Qmxf=Q (little) * 1.1 times; Qmif=Qmxn-Q (little) * 1.1 times;
Wherein, Q (greatly) is in transformer station's two group capacitors one group capacious, and Q (little) is little one group of capacity in transformer station's two group capacitors;
Determine the action parameter of main transformer tap, the action parameter of determining the main transformer tap comprises determines day to allow an action frequency, action blanking time (second), the control judgement delay time (second) of VQC program, return to school the time (second), the tap parameter that lowers category;
Determine capacitor parameters, comprise allow the day of determining capacitor action frequency, action blanking time (minute), return to school the time (second).
Definite method of setting parameter in the above-mentioned VQC system, wherein, in the action parameter step of described definite main transformer tap, allow action frequency to be set to day 20 times, action was made as 30 seconds blanking time, the control of VQC program judges that delay time was made as 30 seconds, and the time of returning to school is set to less than judging delay time.
Definite method of setting parameter in the above-mentioned VQC system, wherein, the described time of returning to school is 25 seconds.
Definite method of setting parameter in the above-mentioned VQC system, wherein, in the action parameter step of described definite main transformer tap, the tap of setting lower category action blanking time of parameter is 30 seconds, the time of returning to school is 25 seconds.
Definite method of setting parameter in the above-mentioned VQC system, wherein, in described definite capacitor parameters step, allowing an action frequency day of the capacitor of setting is that 10 times, action are that 30 to 60 minutes, the time of returning to school are 25 seconds blanking time.
The invention has the beneficial effects as follows: definite method of the setting parameter of a kind of VQC of the present invention system by determining each setting parameter in the VQC system, makes that the parameter of setting is more reasonable and effective.
Description of drawings
Fig. 1 is 17 district's policy maps of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
See also Fig. 1, there is shown definite method of setting parameter in a kind of VQC of the present invention system, this VQC system is used for main transformer tap and capacitor are controlled, it is controlled by 17 district's figure control strategies, this 17 district figure is voltage U by ordinate, abscissa is the coordinate that reactive power Q constitutes in first quartile, this zone is divided into 17, be respectively 1～17 district, abscissa is from the little lower limit Qmin that extremely is disposed with greatly, auxiliary lower limit Qmif, auxiliary higher limit Qmxf and higher limit Qmxn, ordinate is disposed with lower limit Vmin from bottom to up, auxiliary lower limit Vmif, auxiliary higher limit Vmxf and higher limit Vmxn, it may further comprise the steps:
The border of setting voltage U, the border of voltage U are set and are comprised capping value Vmxn, lower limit Vmin, auxiliary higher limit Vmxf and auxiliary lower limit Vmif, wherein:
Vmin＝10.1KV； Vmxn＝10.6KV；
Vmif＝10.2KV； Vmxf＝10.5KV；
Set the border of reactive power Q, the border of reactive power Q is set and is comprised preset lower limit Qmin, auxiliary lower limit Qmif, auxiliary higher limit Qmxf and higher limit Qmxn, wherein:
Qmin=0Mvar; Qmxn=Q (greatly) * 1.1 times,
Qmxf=Q (little) * 1.1 times; Qmif=Qmxn-Q (little) * 1.1 times;
Wherein, Q (greatly) is in transformer station's two group capacitors one group capacious, and Q (little) is little one group of capacity in transformer station's two group capacitors;
Determine the action parameter of main transformer tap, the action parameter of determining the main transformer tap comprises determines day to allow an action frequency, action blanking time (second), the control judgement delay time (second) of VQC program, return to school the time (second), the tap parameter that lowers category;
Determine capacitor parameters, comprise allow the day of determining capacitor action frequency, action blanking time (minute), return to school the time (second).
In the present embodiment, in the action parameter step of determining the main transformer tap, a day permission action frequency is set to 20 times, action was made as 30 seconds blanking time, the control of VQC program judges that delay time was made as 30 seconds, and the time of returning to school is set to less than judging delay time, and it is 25 seconds that the time of returning to school is set.
Determine in the action parameter step of main transformer tap that the tap of setting lower category action blanking time of parameter is 30 seconds, the time of returning to school is 25 seconds.
Determine in the capacitor parameters step that allowing an action frequency day of the capacitor of setting is that 10 times, action are that 30 to 60 minutes, the time of returning to school are 25 seconds blanking time.
When setting the border of reactive power Q, consider that most of idle variations are processes slowly, when 16 districts and 2 districts, tend to enter into 6 districts (8 district) and 12 districts (10 district) during direct switching large value capacitor group, thereby cause concussion repeatedly, based on above consideration, we propose the action principle of " throwing is cut little for a short time ", namely throw the capacitor group of low capacity when network system need be thrown capacitor earlier, throw jumbo capacitor group again; When network system need be cut capacitor, cut the capacitor group of low capacity earlier, cut jumbo capacitor group again.
Lower limit become to meaning for a short time that becoming of idle effect is excellent, follow the idle principle that should not send, definite value lower limit Qmin=0Mvar is the most appropriate.
Becoming of the upper limit little (namely 9 district's areas becomes little) means that equally becoming of idle effect is excellent, and still, for avoiding throwing the overcompensation after " greatly ", the definite value upper limit is got Qmxn=Q (greatly) * 1.1 times, thereby guarantees that running orbit falls into 9 districts.(1.1 times is the margin for error of big group capacitor).
Auxiliary the improper of border very easily vibrated, follow the principle of " throw little, cut little ", be advisable for auxiliary upper limit Qmxf=Q (little) * 1.1 times, distribute on average in order to make 2,3,4 districts and 14,15,16 districts, assist lower limit Qmif=Qmxn-Q (little) * 1.1 times more suitable.
For example 35kV transformer station two group capacitor capacity are respectively 3.0Mvar and 1.8Mvar, according to top setting method, so get Qmxn=3.3Mvar, auxiliary Qmxf=2.0Mvar, auxiliary Qmif=1.3Mvar, Qmin=0Mvar; If condenser capacity is respectively 1.8Mvar and 1.2Mvar, according to top setting method, should get Qmxn=2.0Mvar, auxiliary Qmxf=1.3Mvar, auxiliary Qmif=0.7Mvar, Qmin=0Mvar.
Above embodiment is only for the usefulness that the present invention is described, but not limiting the scope of the invention.Relevant those skilled in the art under the situation that does not break away from the spirit and scope of the present invention, can also make various conversion or modification, and the technical scheme that all are equal to also should belong within the category of the present invention's protection, is limited by each claim.
Claims (4)
1. definite method of setting parameter in the VQC system, this VQC system is used for main transformer tap and capacitor are controlled, it is controlled by 17 district's figure control strategies, described 17 district figure are voltage U by ordinate, abscissa is the coordinate that reactive power Q constitutes in first quartile, this zone is divided into 17, be respectively 1～17 district, abscissa is from the little lower limit Qmin that extremely is disposed with greatly, auxiliary lower limit Qmif, auxiliary higher limit Qmxf and higher limit Qmxn, ordinate is disposed with lower limit Vmin from bottom to up, auxiliary lower limit Vmif, auxiliary higher limit Vmxf and higher limit Vmxn, it is characterized in that it may further comprise the steps:
The border of setting voltage U, the border of voltage U are set and are comprised capping value Vmxn, lower limit Vmin, auxiliary higher limit Vmxf and auxiliary lower limit Vmif, wherein:
Vmin＝10.1KV； Vmxn＝10.6KV；
Vmif＝10.2KV； Vmxf＝10.5KV；
Set the border of reactive power Q, the border of reactive power Q is set and is comprised preset lower limit Qmin, auxiliary lower limit Qmif, auxiliary higher limit Qmxf and higher limit Qmxn, wherein:
Qmin=0Mvar; Qmxn=Q (greatly) * 1.1,
Qmxf=Q (little) * 1.1; Qmif=Qmxn-Q (little) * 1.1;
Wherein, Q (greatly) is reactive power capacious a group in transformer station's two group capacitors, and Q (little) is one group little reactive power of capacity in transformer station's two group capacitors;
Determine the action parameter of main transformer tap, the action parameter of determining the main transformer tap comprise determine day to allow an action frequency, be the action blanking time of chronomere with the second, be that the control of the VQC program of chronomere is judged delay time, is the time of returning to school, the tap of the chronomere parameter that lowers category with the second with the second;
Determine capacitor parameters, comprise allow action frequency the day of determining capacitor, minute being the action blanking time of chronomere, being the time of returning to school of chronomere with the second,
In the action parameter step of described definite main transformer tap, a day permission action frequency is set to 20 times, and action was made as 30 seconds blanking time, and the control of VQC program judges that delay time was made as 30 seconds, and the time of returning to school is set to less than judging delay time.
2. definite method of setting parameter in the VQC according to claim 1 system is characterized in that the described time of returning to school is 25 seconds.
3. definite method of setting parameter in the VQC according to claim 1 system is characterized in that, in the action parameter step of described definite main transformer tap, the tap of setting lower category action blanking time of parameter is 30 seconds, and the time of returning to school is 25 seconds.
4. definite method of setting parameter in the VQC according to claim 1 system, it is characterized in that, in described definite capacitor parameters step, allowing an action frequency day of the capacitor of setting is that 10 times, action are that 30 to 60 minutes, the time of returning to school are 25 seconds blanking time.
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| CN101207286A (en) * | 2007-11-09 | 2008-06-25 | 上海可鲁系统软件有限公司 | Method for electric voltage idle work regulation switch control |
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| CN101207286A (en) * | 2007-11-09 | 2008-06-25 | 上海可鲁系统软件有限公司 | Method for electric voltage idle work regulation switch control |
Non-Patent Citations (2)
| Title |
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| 无功/电压自动控制装置在上海市区电网的应用;杨振睿;《供用电》;20070630;第24卷(第3期);第58－59页 * |
| 杨振睿.无功/电压自动控制装置在上海市区电网的应用.《供用电》.2007,第24卷(第3期), |
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Owner name: SHANGHAI ELECTRIC COMMUNICATION CO., LTD. Free format text: FORMER OWNER: SHANGHAI SINAN ELECTRIC POWER COMMUNICATION CO., LTD. Effective date: 20120716 |
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Effective date of registration: 20120716 Address after: 3, No. 246 middle Jiangxi Road, No. 200001, Shanghai, Huangpu District Applicant after: Shanghai Electric Power Communication Co., Ltd. Co-applicant after: Shanghai Electric Power Corporation Address before: 201100 No. 2888 Gu Dai Road, Shanghai, Minhang District Applicant before: Shanghai Sinan Electric Power Communication Co., Ltd. Co-applicant before: Shanghai Electric Power Corporation |
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