CN104934985A - Method of realizing transformer-substation-voltage reactive power control and measurement and control apparatus - Google Patents
Method of realizing transformer-substation-voltage reactive power control and measurement and control apparatus Download PDFInfo
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Abstract
The invention discloses a method of realizing transformer-substation-voltage reactive power control and a measurement and control apparatus. The method comprises the following steps: based on a microcomputer integration protection measurement and control device, setting a comparator, and loading a preset logic equation to the microcomputer integration protection measurement and control device so that a comparison result of the comparator is converted into a corresponding control parameter according to a nine-zone graph control principle; through an I/O system of the microcomputer integration protection measurement and control device, collecting measurement data and taking the measurement data as an input value and/or a given value of the comparator; through the comparator and the logic equation, converting the measurement data into the corresponding control parameter; and carrying out voltage reactive power control according to the control parameter. Through a technical scheme in the invention, reliability and flexibility of transformer substation VQC can be increased and investment cost is saved.
Description
Technical field
The present invention relates to technical field of power systems, particularly relate to a kind of method realizing transforming plant voltage reactive control based on computer integrated protection measure and control device and measure and control device.
Background technology
In order to ensure the quality of voltage, need to electric power system carry out rational reactive power compensation (Reactivepower compensation) and effectively reactive power compensation automatically control.So-called reactive power compensation, is called for short reactive power compensation, works the power factor improving electrical network, reduces the loss of supply transformer and conveying circuit, improve power supplying efficiency in power supply system, improves power supply environment.The compensation method of rational selection voltage and reactive power, can accomplish the loss reducing electrical network to greatest extent, power grid quality is improved; Otherwise, may electric power system be caused, voltage fluctuation, the factors such as harmonic wave increase.
Voltage is an important indicator of the quality of power supply, and the safe and economical operation of quality of voltage on electric power system has important impact; So voltage and reactive power compensates be in an indispensable very important position in power supply system.So-called voltage & var control, be exactly by computer software or embedded software, the remote measure and communication data of electrical network are obtained by communication channel, the result of calculation of voltage and reactive power is judged, then forming device action command is to control the equipment such as reactive-load compensation equipment and on load tap changer, finally reaches that voltage is qualified, the rational control objectives of reactive power flow.
At present, the implementation method that transforming plant voltage reactive controls mainly contains 3 kinds: (1) is based on the daemon software VQC (Voltage Quality Control, refers to voltage and reactive power control system) of electric substation automation system; (2) based on the network VQC of electric substation automation system; (3) the special VQC device of I/O system is carried.
There is following shortcoming in existing implementation method: the first, all do not have I/O system based on the daemon software VQC of electric substation automation system and network VQC itself, and be limited to the sampling precision of electric substation automation system and response speed and communication level, reliability is low; The second, to place one's entire reliance upon master system and communication network based on the daemon software VQC of electric substation automation system and network VQC, its system is huge, very flexible, safeguards complicated; 3rd, carry the special VQC device of I/O system, cost is higher.
Summary of the invention
The object of the invention is to propose a kind of method and the measure and control device that realize transforming plant voltage reactive control, the problems such as the reliability that can solve the existing VQC based on electric substation automation system is low, very flexible, maintenance are complicated or cost is higher, reliability and the flexibility of transformer station VQC can be improved, cost of reducing investment outlay.
For reaching this object, the present invention by the following technical solutions:
One aspect of the present invention provides a kind of method realizing transforming plant voltage reactive and control, and comprises,
Comparator is set based on computer integrated protection measure and control device, sets input value and the set-point of the association of described comparator;
Download default logical equation to described computer integrated protection measure and control device, described logical equation is used for, according to nine-zone graph control principle, the comparative result of described comparator is converted to corresponding controling parameters;
The I/O system acquisition measurement data carried by computer integrated protection measure and control device, using described measurement data as the input value of described comparator and/or set-point;
By described comparator, described logical equation, described measurement data is converted to corresponding controling parameters, described computer integrated protection measure and control device carries out voltage & var control according to described controling parameters.
Wherein, described comparator is set based on computer integrated protection measure and control device, sets input value and the set-point of the association of described comparator, specifically comprise:
Arrange comparator based on computer integrated protection measure and control device, the input value setting described comparator is the measurement data of computer integrated protection measure and control device, and the set-point of setting comparator is one of measurement data of random number or computer integrated protection measure and control device;
Arrange the control word of described comparator, the control word of described comparator comprises two setting options, and setting options are the first setting options, if this option is beaten " √ ", then represent that the set-point of comparator is random number, otherwise, then represent that the set-point of comparator is measurement data; Another is the second setting options, if this option is beaten " √ ", represent when the input value of comparator is not less than set-point, its output valve is logical one, otherwise output valve is logical zero.
Wherein, described measurement data comprises remote measurement value or protection value.
Wherein, described computer integrated protection measure and control device carries out voltage & var control according to described controling parameters, comprises,
Described computer integrated protection measure and control device judges the voltage of transformer station and the result of calculation of reactive power according to described controling parameters, generates the device action instruction of Substation Reactive-power Compensation equipment and on load tap changer;
Carry out output according to described device action instruction to reactive-load compensation equipment and on load tap changer to control, make system cloud gray model in the state of the target area of nine-zone graph, realize transforming plant voltage reactive and control.
Wherein, described reactive-load compensation equipment is switching type capacitor, and described on load tap changer is main transformer tap step-down switching.
Wherein, described measurement data at least comprises: power factor (PF), power factor (PF) lower limit, power factor (PF) higher limit, voltage, upper voltage limit value, voltage lower limit value, transformer gear, transformer most high tap position, transformer lowest gear and starting resistor;
Described comparator at least comprises CMP1 ~ CMP7 seven comparators, wherein,
The measured value that the set-point of CMP1 is corresponding is power factor (PF), and the measured value that the input value of CMP1 is corresponding is power factor (PF) lower limit;
The measured value that the set-point of CMP2 is corresponding is power factor (PF), and the measured value that the input value of CMP2 is corresponding is power factor (PF) higher limit;
The measured value that the set-point of CMP3 is corresponding is voltage, and the measured value that the input value of CMP3 is corresponding is upper voltage limit value;
The measured value that the set-point of CMP4 is corresponding is voltage, and the measured value that the input value of CMP4 is corresponding is voltage lower limit value;
The measured value that the set-point of CMP5 is corresponding is transformer gear, and the measured value that the input value of CMP5 is corresponding is the most high tap position of transformer;
The measured value that the set-point of CMP6 is corresponding is transformer gear, and the measured value that the input value of CMP6 is corresponding is transformer lowest gear;
The measured value that the set-point of CMP7 is corresponding is voltage, and the measured value that the input value of CMP7 is corresponding is starting resistor.
Wherein, described logical equation comprises 16 soft relay.
Present invention also offers a kind of computer integrated protection measure and control device realizing transforming plant voltage reactive and control, comprise, comparator administrative unit, I/O system unit, logic manage unit and idle control unit,
Described I/O system unit, for gathering measurement data, using described measurement data as the input value of described comparator and/or set-point;
Described comparator administrative unit, for arranging comparator, sets input value and the set-point of described comparator association;
Described logic manage unit, for downloading default logical equation to described computer integrated protection measure and control device, described logical equation is used for, according to nine-zone graph control principle, the comparative result of described comparator is converted to corresponding controling parameters;
Described idle control unit, for carrying out voltage & var control according to described controling parameters.
Wherein, described idle control unit, specifically for judging the voltage of transformer station and the result of calculation of reactive power according to described controling parameters, generates the device action instruction of Substation Reactive-power Compensation equipment and on load tap changer; And according to described device action instruction, output control is carried out to reactive-load compensation equipment and on load tap changer, make system cloud gray model in the state of the target area of nine-zone graph, realize transforming plant voltage reactive and control.
Implement the embodiment of the present invention, there is following beneficial effect:
The embodiment of the present invention is by arranging comparator and logical equation based on computer integrated protection measure and control device, the I/O system acquisition measurement data carried by computer integrated protection measure and control device, using described measurement data as the input value of described comparator and/or set-point; Described comparator compares input value and the set-point of association, by described logical equation, comparative result is converted to corresponding controling parameters; Voltage & var control is carried out according to described controling parameters.The present invention program is based on the computer integrated protection measure and control device with GPF (General Protection False function; make full use of functional node that computer integrated protection measure and control device carries to realize the voltage & var control of transformer station; the problems such as, very flexible, maintenance complexity or cost low with the reliability solving the existing VQC based on electric substation automation system are higher; reliability and the flexibility of transformer station VQC can be improved, cost of reducing investment outlay.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing described below is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet realizing the embodiment of the method that transforming plant voltage reactive controls of the present invention.
Fig. 2 is the functional node schematic diagram that the computer integrated protection measure and control device of the embodiment of the present invention is arranged.
Fig. 3 is the schematic diagram of the nine-zone graph control principle of the embodiment of the present invention.
Fig. 4 is the setting schematic diagram of the comparator of the embodiment of the present invention.
Fig. 5 is the logical schematic of the logical equation of the embodiment of the present invention.
Fig. 6 is a kind of structural representation realizing the measure and control device embodiment that transforming plant voltage reactive controls of the present invention.
Embodiment
Carry out clear, complete description below in conjunction with accompanying drawing of the present invention to the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belongs to the scope of protection of the invention.
The hardware foundation realizing the inventive method embodiment is computer integrated protection measure and control device, and microcomputer protecting controller does not go out chip single-chip microcomputer by high integration, bus, high-precision current voltage transformer, high insulation resistance export the parts such as auxiliary relay, high-reliability switch power module and form.For the economical protection of the one measured, control, protect, communication is integrated.Microcomputer protecting controller possesses incoming relay-protection, outlet protection, the defencive functions such as sectionalised protection, distribution transforming protection, motor protection, capacitor protection, main transformer backup protection, generator backup protection, PT monitoring and protection.In the embodiment of the present invention, computer integrated protection measure and control device is the computer integrated protection measure and control device being applied in power grid control field, carries I/O system and some functional nodes, can obtain remote measurement value or protection value by I/O system.As shown in Figure 2; in the embodiment of the present invention, the protection value of computer integrated protection measure and control device comprises: the VQC measurement data such as voltage U, reactive power P, power factor (PF) COSQ, transformer gear, and functional node comprises: open into relay word, output relay word, protection component relay word, comparator relay word, timer relay word and LED relay word able to programme etc.
Be described below in conjunction with a kind of method stream realizing transforming plant voltage reactive control of Fig. 1-5 couples of the present invention, comprise the steps:
Step S101, arranges comparator based on computer integrated protection measure and control device, sets input value and the set-point of the association of described comparator.
In the present embodiment, as shown in Figure 4, the setting of comparator comprises two aspects, is on the one hand, the input value setting described comparator is the measurement data of computer integrated protection measure and control device, and the set-point of setting comparator is one of measurement data of random number or computer integrated protection measure and control device; Be on the other hand, the control word of described comparator is set, the control word of described comparator comprises two setting options, setting options are the first setting options (namely " beat √ immediate " option), if this option is beaten " √ ", then represent that the set-point of comparator is random number (i.e. a numerical value), otherwise, then represent that the set-point of comparator is measurement data; Another is the second setting options (namely " beat √ >=" option), if this option is beaten " √ ", represent when the input value of comparator is not less than set-point, its output valve is logical one, otherwise output valve is logical zero.
Step S102, downloads default logical equation to described computer integrated protection measure and control device, and described logical equation is used for, according to nine-zone graph control principle, the comparative result of described comparator is converted to corresponding controling parameters.
In the present embodiment, write corresponding logical equation by voltage power-less nine-zone graph control principle in advance, described logical equation downloads in computer integrated protection measure and control device by service port.
In the present embodiment, as shown in Figure 3, in nine-zone graph, the state in target area (region 9) is the normal service area of system U, Q (COS Ф, power factor (PF)), is the target area of power station voltage & var control.The principle that computer integrated protection measure and control device of the present invention carries out voltage & var control according to described controling parameters regulates on-load transformer tap changer and switched capacitor, makes systems attempt run on region 9.According to nine-zone graph control principle, resolve software programming logical equation by logical equation and generate controling parameters.Preferably, the logical equation of the present embodiment comprises 16 soft relay.
Step S103, the I/O system acquisition measurement data carried by computer integrated protection measure and control device, using described measurement data as the input value of described comparator and/or set-point.
In the present embodiment; described measurement data comprises remote measurement value or protection value, specifically comprises: power factor (PF), power factor (PF) lower limit, power factor (PF) higher limit, voltage, upper voltage limit value, voltage lower limit value, transformer gear, transformer most high tap position, transformer lowest gear and starting resistor etc.
The I/O system acquisition measurement data that the present embodiment is carried by computer integrated protection measure and control device, compares the special VQC device carrying I/O system, can reduce the cost.
Step S104, is converted to corresponding controling parameters by described comparator, described logical equation by described measurement data.
In the present embodiment, this step is specially input value and the set-point that described comparator compares association, by described logical equation, the comparative result of comparator is converted to corresponding controling parameters.
As shown in Figure 5, the present embodiment at least comprises CMP1 ~ CMP7 seven comparators, and wherein, the measured value that the set-point of CMP1 is corresponding is power factor (PF), and the measured value that the input value of CMP1 is corresponding is power factor (PF) lower limit; The measured value that the set-point of CMP2 is corresponding is power factor (PF), and the measured value that the input value of CMP2 is corresponding is power factor (PF) higher limit; The measured value that the set-point of CMP3 is corresponding is voltage, and the measured value that the input value of CMP3 is corresponding is upper voltage limit value; The measured value that the set-point of CMP4 is corresponding is voltage, and the measured value that the input value of CMP4 is corresponding is voltage lower limit value; The measured value that the set-point of CMP5 is corresponding is transformer gear, and the measured value that the input value of CMP5 is corresponding is the most high tap position of transformer; The measured value that the set-point of CMP6 is corresponding is transformer gear, and the measured value that the input value of CMP6 is corresponding is transformer lowest gear; The measured value that the set-point of CMP7 is corresponding is voltage, and the measured value that the input value of CMP7 is corresponding is starting resistor.
Step S105, described computer integrated protection measure and control device carries out voltage & var control according to described controling parameters.
In the present embodiment, computer integrated protection measure and control device judges the voltage of transformer station and the result of calculation of reactive power according to described controling parameters, generates the device action instruction of Substation Reactive-power Compensation equipment and on load tap changer; Carry out output according to described device action instruction to reactive-load compensation equipment and on load tap changer to control, make system cloud gray model in the state of the target area (region 9) of nine-zone graph, realize transforming plant voltage reactive and control.Wherein, described reactive-load compensation equipment is switching type capacitor, and described on load tap changer is main transformer tap step-down switching.
Here logical equation is combined according to syntax rule by relay word, can express the program language of certain Boolean logic relationship.Logical equation can be used for realizing various specific function, and the function as protection component action, LED light defines, the definition etc. of protection act report.The logical equation of the present embodiment has some explanation following:
(1) logical operator that logical equation uses has: assignment operator "=", with logical operator " * " or logical operator "+", NOT logic operator "! ", rising edge logical operator "/", trailing edge logical operator " ", bracketed logical operator " () ", operator can only appear at assignment symbol right side;
(2) operation rule of logical equation has:
A. every bar logical statement has and must only have an assignment symbol;
B. logical operator is according to priority followed successively by from high to low: along logic (rising edge/trailing edge), bracket, NOT logic, with logic or logic;
C. bracket must occur in pairs, allows nested;
D. relay word is divided into " read-only ", " read-write " and " along triggering " three kinds, and read-only relay only allows on the right side of expression formula, requires that assignment symbol right side is along operation expression along trigger relay word;
E. time relay word does not allow along operation.
(3) the relay word (or being called element state) of logical equation, is by the state information of software definition, and logical one represents this relay word action, and logical zero represents that this relay word returns.User can pass through the current operating conditions of maintenance software or each relay word of liquid crystal interface real time inspection.Conventional relay word has: comparator, open into, output, protection component and timer etc.Except the relay word of routine, additionally provide two special relay words: logical one and logical zero, for realizing specific demand.
Based on above explanation, shown in composition graphs 5, the logical equation of the present embodiment specifically comprises:
// auxiliary relay word a=capacitance switch co-bit (capacitance switch is in co-bit state)
a＝IN01
// auxiliary relay word x=! Power factor < power factor lower limit * power factor < power factor higher limit (power factor is normal)
x＝！CMP1*CMP2
// timer ST1=(power factor < power factor lower limit * voltage < upper voltage limit value+power factor normal * voltage < voltage lower limit value * transformer gear < transformer lowest gear) *! A capacitance switch co-bit *! A voltage < starting resistor *! Output OUT01 (throwing capacitor)
ST1＝(CMP1*CMP3+x*CMP4*CMP6)*！a*！CMP7*！OUT01
// timer ST2=power factor < power factor higher limit *! A most high tap position * of voltage < upper voltage limit value * transformer gear < transformer! A voltage < starting resistor *! Output OUT02 (rising the step-down of main transformer tap)
ST2＝CMP2*！CMP3*CMP5*！CMP7*！OUT02
// timer ST3=! A power factor < power factor higher limit *! A voltage < voltage lower limit value *! A capacitance switch co-bit *! A voltage < starting resistor *! Output OUT02 (rising the step-down of main transformer tap)
ST3＝！CMP2*！CMP4*！a*！CMP7*！OUT02
// timer ST4=(! A most normal * of high tap position * power factor of transformer gear < transformer! Voltage < upper voltage limit value+! A power factor < power factor higher limit *! Voltage < voltage lower limit value) a * capacitance switch co-bit *! A voltage < starting resistor *! Output OUT03 (cutting capacitor)
ST4＝(！CMP5*x*！CMP3+！CMP2*！CMP4)*a*！CMP7*！OUT03
// timer ST5=voltage < voltage lower limit value) *! A transformer gear < transformer lowest gear *! A power factor < power factor lower limit *! A voltage < starting resistor *! Output OUT04 (falling the boosting of main transformer tap)
ST5＝CMP4*！CMP6*！CMP1*！CMP7*！OUT04
// timer ST6=power factor < power factor lower limit * voltage < upper voltage limit value) a * capacitance switch co-bit *! A voltage < starting resistor *! Output OUT04 (falling the boosting of main transformer tap)
ST6＝CMP1*CMP3*a*！CMP7*！OUT04
// timer ST7=timer ST1
ST7＝ST1
// timer ST8=timer ST2+ timer ST3
ST8＝ST2+ST3
// timer ST9=timer ST4
ST9＝ST4
// timer ST10=timer ST5+ timer ST6
ST10＝ST5+ST6
// output OUT01=timer ST7 (throwing capacitor actions order outlet)
OUT01＝ST7
// output OUT02=timer ST8 (rising main transformer tap order outlet)
OUT02＝ST8
// output OUT03=timer ST9 (cutting capacitor order outlet)
OUT03＝ST9
// output OUT04=timer ST10 (falling the outlet of main transformer tap)
OUT04＝ST10。
Pass through first embodiment of the invention; based on the computer integrated protection measure and control device with GPF (General Protection False function; make full use of functional node that computer integrated protection measure and control device carries to realize the voltage & var control of transformer station; the problems such as, very flexible, maintenance complexity or cost low with the reliability solving the existing VQC based on electric substation automation system are higher; reliability and the flexibility of transformer station VQC can be improved, cost of reducing investment outlay.
It is below a kind of embodiment realizing the computer integrated protection measure and control device that transforming plant voltage reactive controls provided by the invention.Embodiment and the above-mentioned embodiment of the method for measure and control device belong to same design, and the detail content of not detailed description in the embodiment of measure and control device can with reference to said method embodiment.
Fig. 6 shows a kind of structural representation realizing the computer integrated protection measure and control device that transforming plant voltage reactive controls of the present invention; comprise: I/O system unit 610, comparator administrative unit 620, logic manage unit 630 and idle control unit 640, be specifically described each module below.
Described I/O system unit 610, for gathering measurement data, using described measurement data as the input value of described comparator and/or set-point.Wherein, measurement data here with reference to above-described embodiment, can not repeat.
Described comparator administrative unit 620, for arranging comparator, sets input value and the set-point of described comparator association.
In the present embodiment, the setting of comparator with reference to above-described embodiment, can not repeat.
Described logic manage unit 630, for downloading default logical equation to described computer integrated protection measure and control device, described logical equation is used for, according to nine-zone graph control principle, the comparative result of described comparator is converted to corresponding controling parameters.
Described idle control unit 640, for carrying out voltage & var control according to described controling parameters.
In the present embodiment, be specially and according to described controling parameters, the voltage of transformer station and the result of calculation of reactive power judged, generate the device action instruction of Substation Reactive-power Compensation equipment and on load tap changer; And according to described device action instruction, output control is carried out to reactive-load compensation equipment and on load tap changer, and make system cloud gray model in the state of the target area (region 9) of nine-zone graph, realize transforming plant voltage reactive and control, can with reference to above-described embodiment.
By the computer integrated protection measure and control device of above-described embodiment; the problems such as the reliability that can solve the existing VQC based on electric substation automation system is low, very flexible, maintenance are complicated or cost is higher; reliability and the flexibility of transformer station VQC can be improved, cost of reducing investment outlay.
Above disclosedly be only present pre-ferred embodiments, certainly the right of the present invention can not be limited with this, therefore, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., still belong to the scope that the present invention is contained.
Claims (9)
1. realize the method that transforming plant voltage reactive controls, it is characterized in that, comprise,
Comparator is set based on computer integrated protection measure and control device, sets input value and the set-point of the association of described comparator;
Download default logical equation to described computer integrated protection measure and control device, described logical equation is used for, according to nine-zone graph control principle, the comparative result of described comparator is converted to corresponding controling parameters;
The I/O system acquisition measurement data carried by computer integrated protection measure and control device, using described measurement data as the input value of described comparator and/or set-point;
By described comparator, described logical equation, described measurement data is converted to corresponding controling parameters, described computer integrated protection measure and control device carries out voltage & var control according to described controling parameters.
2. realize the method that transforming plant voltage reactive controls as claimed in claim 1, it is characterized in that, described comparator is set based on computer integrated protection measure and control device, set input value and the set-point of described comparator association, specifically comprise:
Arrange comparator based on computer integrated protection measure and control device, the input value setting described comparator is the measurement data of computer integrated protection measure and control device, and the set-point of setting comparator is one of measurement data of random number or computer integrated protection measure and control device;
Arrange the control word of described comparator, the control word of described comparator comprises two setting options, and setting options are the first setting options, if this option is beaten " √ ", then represent that the set-point of comparator is random number, otherwise, then represent that the set-point of comparator is measurement data; Another is the second setting options, if this option is beaten " √ ", represent when the input value of comparator is not less than set-point, its output valve is logical one, otherwise output valve is logical zero.
3. realize the method that transforming plant voltage reactive controls as claimed in claim 1, it is characterized in that, described measurement data comprises remote measurement value or protection value.
4. realize the method that transforming plant voltage reactive controls as claimed in claim 1, it is characterized in that, described computer integrated protection measure and control device carries out voltage & var control according to described controling parameters, comprises,
Described computer integrated protection measure and control device judges the voltage of transformer station and the result of calculation of reactive power according to described controling parameters, generates the device action instruction of Substation Reactive-power Compensation equipment and on load tap changer;
Carry out output according to described device action instruction to reactive-load compensation equipment and on load tap changer to control, make system cloud gray model in the state of the target area of nine-zone graph, realize transforming plant voltage reactive and control.
5. realize the method that transforming plant voltage reactive controls as claimed in claim 4, it is characterized in that, described reactive-load compensation equipment is switching type capacitor, and described on load tap changer is main transformer tap step-down switching.
6. realize the method that transforming plant voltage reactive controls as claimed in claim 1, it is characterized in that, described measurement data at least comprises: power factor (PF), power factor (PF) lower limit, power factor (PF) higher limit, voltage, upper voltage limit value, voltage lower limit value, transformer gear, transformer most high tap position, transformer lowest gear and starting resistor;
Described comparator at least comprises CMP1 ~ CMP7 seven comparators, wherein,
The measured value that the set-point of CMP1 is corresponding is power factor (PF), and the measured value that the input value of CMP1 is corresponding is power factor (PF) lower limit;
The measured value that the set-point of CMP2 is corresponding is power factor (PF), and the measured value that the input value of CMP2 is corresponding is power factor (PF) higher limit;
The measured value that the set-point of CMP3 is corresponding is voltage, and the measured value that the input value of CMP3 is corresponding is upper voltage limit value;
The measured value that the set-point of CMP4 is corresponding is voltage, and the measured value that the input value of CMP4 is corresponding is voltage lower limit value;
The measured value that the set-point of CMP5 is corresponding is transformer gear, and the measured value that the input value of CMP5 is corresponding is the most high tap position of transformer;
The measured value that the set-point of CMP6 is corresponding is transformer gear, and the measured value that the input value of CMP6 is corresponding is transformer lowest gear;
The measured value that the set-point of CMP7 is corresponding is voltage, and the measured value that the input value of CMP7 is corresponding is starting resistor.
7. realize the method that transforming plant voltage reactive controls as claimed in claim 1, it is characterized in that, described logical equation comprises 16 soft relay.
8. realize the computer integrated protection measure and control device that transforming plant voltage reactive controls, it is characterized in that, comprise, comparator administrative unit, I/O system unit, logic manage unit and idle control unit,
Described I/O system unit, for gathering measurement data, using described measurement data as the input value of described comparator and/or set-point;
Described comparator administrative unit, for arranging comparator, sets input value and the set-point of described comparator association;
Described logic manage unit, for downloading default logical equation to described computer integrated protection measure and control device, described logical equation is used for, according to nine-zone graph control principle, the comparative result of described comparator is converted to corresponding controling parameters;
Described idle control unit, for carrying out voltage & var control according to described controling parameters.
9. realize the computer integrated protection measure and control device that transforming plant voltage reactive controls as claimed in claim 8, it is characterized in that, described idle control unit, specifically for judging the voltage of transformer station and the result of calculation of reactive power according to described controling parameters, generate the device action instruction of Substation Reactive-power Compensation equipment and on load tap changer; And according to described device action instruction, output control is carried out to reactive-load compensation equipment and on load tap changer, make system cloud gray model in the state of the target area of nine-zone graph, realize transforming plant voltage reactive and control.
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| CN201510395509.5A Active CN104934985B (en) | 2015-07-06 | 2015-07-06 | A kind of method and measure and control device for realizing transforming plant voltage reactive control |
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| US20090128100A1 (en) * | 2007-11-21 | 2009-05-21 | Mitsubishi Electric Corporation | Power system control apparatus and power system control method |
| CN103124071A (en) * | 2011-11-18 | 2013-05-29 | 北京赤那思电气技术有限公司 | On-line monitoring allowable intelligent high voltage reactive power compensation device |
| JP2015090580A (en) * | 2013-11-06 | 2015-05-11 | 三菱電機株式会社 | Voltage reactive power controller |
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|---|---|---|---|---|
| US20090128100A1 (en) * | 2007-11-21 | 2009-05-21 | Mitsubishi Electric Corporation | Power system control apparatus and power system control method |
| CN103124071A (en) * | 2011-11-18 | 2013-05-29 | 北京赤那思电气技术有限公司 | On-line monitoring allowable intelligent high voltage reactive power compensation device |
| JP2015090580A (en) * | 2013-11-06 | 2015-05-11 | 三菱電機株式会社 | Voltage reactive power controller |
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| 杨玉福: ""东莞电网110kV变电站综合自动化系统研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
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