CN102088269A - Power plant automatic voltage control method based on control instruction code - Google Patents
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Abstract
The present invention relates to a power plant automatic voltage control method based on control instruction code, which belongs to the technology field of automatic voltage control. The method is implemented in such a way that: firstly, an Automatic Voltage Control (AVC) master station collects generator high voltage bus voltage value controlled by power plant, calculates and obtains the optimized generator high voltage bus voltage value controlled by power plant through secondary voltage control, calculates an increment and an adjustment direction required to be adjusted according to the current sampling value of the voltage of the power plant high voltage bus, and generates a 3 bits or 4 bits control instruction code according to the designated coding mode; the AVC master station sends the control instruction code to an AVC power plant substation; the AVC power plant substation decodes the control instruction code according to the definition of the code numerical value after receiving the control instruction code, and performs real time adjustment on the generator high voltage bus voltage value controlled by power plant according to the decoded control instruction; and the AVC master station waits for entering into a secondary voltage control period of the next round after finishing issuing the control instruction. The method of the invention realizes coding the power plant control instruction in the automatic voltage control, thereby reaching the purpose of power plant automatic voltage control.
Description
Technical field
The invention belongs to electric power system automatism voltage control technical field, particularly the automatic voltage control method of encoding based on control command.
Background technology
Automatism voltage control (AVC, Automatic Voltage Control) system is one of most important automatic control system of electric power system.The AVC system mainly adopts the tertiary voltage control model at present, whole AVC system is divided into three levels: one-level voltage control (PVC, Primary Voltage Control), secondary voltage control (SVC, Secondary VoltageControl) and tertiary voltage control (TVC, Tertiary Voltage Control).
The one-level voltage control is according to the difference of the object of control, can be divided into power plant's one-level voltage control and transformer station's one-level voltage control: power plant's one-level voltage control is the control of the automatic excitation regulator equipment such as (AVR) to power generator, owing to need the factor of consideration very complicated, therefore, in order to realize the closed-loop control of AVC system, also need special AVC power substation be set at the power plant place, corresponding is provided with the AVC main website in the regional power grid control centre.The AVC main website carries out three grades and secondary voltage control calculating, according to result of calculation, issues the instruction of generator high voltage bus voltage control to the AVC power substation.After the AVC power substation is received the control command of generator high voltage bus, according to each equipment running status in the power plant, calculate the excitation regulation instruction that generates each operating generator, the control command that generator high voltage bus voltage follower AVC main website is issued, the voltage-controlled time constant of one-level generally are second levels.Similarly, transformer station's one-level voltage control also can adopt AVC transformer station substation control mode, promptly at the transformer station place AVC substation is set, and carries out the control command that the AVC main website issues.Control command is the idle regulated quantity of transforming plant main transformer low-pressure side, perhaps on-load tap-changing transformer gear regulated quantity, after the transformer station substation receives control command, select transforming plant main transformer low-pressure side reactive apparatus to carry out switching operation voluntarily or carry out the operation of on-load tap-changing transformer shift.
The AVC main website that the regional power grid control centre is provided with finishes three grades, secondary voltage control function.Wherein secondary voltage control is to liking power plant or transformer station.If controlling object is a power plant, in a control cycle (routine is 5 minutes), control the regional maincenter busbar voltage optimization target values that provides according to tertiary voltage, adopt sensitivity algorithm, in conjunction with the regulating power that send on the AVC power substation, COMPREHENSIVE CALCULATING goes out the relevant generator high voltage bus voltage control desired value of maincenter bus therewith, and issues control command and this power plant is carried out voltage control for the AVC power substation, and one-period issues the control command of a round.If the controlling object of secondary voltage control is a transformer station, the optimization target values of the regional maincenter busbar voltage that provides according to three grades of controls adopts sensitivity algorithm to obtain the busbar voltage control target of transformer stations all in this zone.But this desired value can not be directly used in control, and this and power plant's secondary voltage control are different.On the one hand, because the equipment of transformer station's control is discrete device, the voltage control of transformer station is discontinuous, has step evolution; On the other hand, need in the transformer station to take all factors into consideration high, medium and low three sides busbar voltage security constraint and regulate the requirement of target, therefore in transformer station's secondary voltage control, need be according to the equipment operation situation of transformer station, carry out analysis-by-synthesis calculating in conjunction with the regional maincenter busbar voltage optimization target values that tertiary voltage control provides, control result to current available discrete device estimates, just can determine whether control command controlled and that generation equipment is concrete, be handed down to AVC transformer station substation and carry out.
Tertiary voltage control is calculated based on overall voltage and reactive power optimization, according to the idle distribution of present the whole network, taking all factors into consideration the idle of power plant, transformer station exerts oneself and spare condition, under the condition of considering security constraints such as voltage is qualified, trend is not out-of-limit, with the network loss minimum is that optimization aim is optimized calculating, provides the reactive Voltage Optimum desired value of the whole network optimum.Because electric network reactive-load has distributivity and zonal characteristics, the AVC system is divided into several regions according to the characteristic of reactive power automatically with electrical network, each zone selects main critical busses as the maincenter bus, and the voltage control target of maincenter bus adopts the given target of overall idle work optimization.Equipment in the same zone has close coupling on the reactive power characteristic, interregional equipment then possesses loose coupling, the thinking of this subregion control meets the principle of electric network reactive-load layering and zoning control, finish by system is on-line automatic during simultaneously this subregion, be " soft sectoring ", can adapt to the development and change of electrical network.
During AVC system actual motion, issue in the process of control command to the AVC power substation, will face two major issues in the AVC main website.One, when AVC main website and AVC power substation data source not simultaneously, may have error in measurement, if directly issue control generator high voltage bus optimization target values, can produce the situation of incorrect voltage-regulation direction.For example the current sampled voltage of the control generator high voltage bus that obtains of AVC main website is 228.5kV, and the current sampled voltage that the AVC power substation obtains by other data source is 229.2kV, the control generator high voltage bus optimization target values that AVC main website side is carried out secondary voltage control calculating generation is 229.0kV, be the expectation high voltage bus rising 0.5kV of power plant of AVC main website, but, if directly issue control generator high voltage bus optimization target values 229.0kV, then the AVC power substation can be made the operation that busbar voltage reduces 0.2kV, expects that with the AVC main website direction of voltage-regulation is opposite; They are two years old, because of communication port disturbs, the AVC power substation may be received continuous identical control command, and this moment, the AVC power substation can not judge whether this control command is repetitive instruction, if regulate, probably cause the toning of generator high voltage bus voltage according to the control command of receiving.
Summary of the invention
The objective of the invention is for overcoming the weak point of prior art, a kind of power plant's automatic voltage control method based on the control command coding is proposed, this method be in the AVC main website when the AVC power substation sends control generator high voltage bus voltage-regulation amount, adopt a kind of mode of coding, to guarantee that the AVC power substation accurately receives the secondary voltage control instruction that the AVC main website is assigned, carry out the secondary voltage control strategy, follow the controlled target that the AVC main website sets, finally reach effect the automatism voltage control of power plant.
The power plant's automatic voltage control method based on the control command coding that the present invention proposes is characterized in that this comprises the method following steps:
1) secondary voltage control cycle, current power plant control generator high voltage bus magnitude of voltage is gathered by the AVC main website, carries out power plant's secondary voltage control and calculates, and produces power plant's control generator high voltage bus voltage optimization desired value;
2) the AVC main website generates power plant's control command coding according to the increment size and the adjusting direction of the adjusting of control generator high voltage bus voltage needs, encodes and gets 3 or 4 integers:
If coding adopts 3 integers, each bit value is defined as follows:
Hundred bit value are represented power plant's control generator high voltage bus voltage-regulation direction, and " 2 " expression is raised, " 1 " expression downward modulation, and other numerical value are thought disable instruction;
Ten digit value represents that a control command issues round, and numerical value increases progressively circulation from " 1 "-" 5 ", and the every round of AVC main website guarantees when issuing control command that this bit value is different with last round control command; If ten digit value in the scope of " 1 "-" 5 ", is not thought disable instruction; The AVC power substation preserve to be gone up the control command coding of round, obtain the control command coding of new round after, if find that the ten digit value of this control command coding is identical with last round numerical value, think this not renewal of round instruction;
Units represents to control generator high voltage bus voltage-regulation increment, get " 0 ", " 1 ", " 2 " ..., the numeral of " 7 " or " 8 ", the maximum of " 8 " expression voltage-regulation increment, " 0 " are represented the current adjusting power plant control generator high voltage bus voltage that do not need to increase;
If coding adopts 4 integers, each bit value is defined as follows:
Kilobit is represented power plant's control generator high voltage bus voltage-regulation direction, and " 2 " expression is raised, " 1 " expression downward modulation, and other numerical value are thought disable instruction;
Hundred bit value represent that a control command issues round, and numerical value increases progressively circulation from " 1 "-" 5 ", and the every round of AVC main website guarantees when issuing control command that this bit value is different with last round control command; If ten digit value in the scope of " 1 "-" 5 ", is not thought disable instruction; The AVC power substation preserve to be gone up the control command coding of round, obtain the control command coding of new round after, if find that the ten digit value of this control command coding is identical with last round numerical value, think this not renewal of round instruction;
Ten and units value representation adjusting increment, get " 00 ", " 01 ", " 02 " ..., the numeral of " 09 " or " 10 ", the maximum of " 10 " expression voltage-regulation increment, " 00 " are represented the current adjusting power plant control generator high voltage bus voltage that do not need to increase;
3) the AVC main website encodes to AVC power substation sending controling instruction, the AVC power substation is decoded according to the definition of coding numerical value after receiving the control command coding, according to decoded control command power plant's control generator high voltage bus voltage is carried out real-time regulated then; Do not receive the legal control command of having upgraded in 15 minutes if the AVC power substation surpasses, think that the AVC main website withdraws from, the AVC power substation automatically switches to local runtime, does not promptly accept AVC main website control command, controls according to AVC power substation predetermined manner; If the AVC power substation is received the legal control command of having upgraded again, transfer automatically then that to receive AVC main website control command be distant place state of a control to, according to decoded control command power plant's control generator high voltage bus voltage is carried out real-time regulated;
4) after AVC main website control command coding issues and finishes, wait for entering the next round secondary voltage control cycle, change step 1).
Characteristics of the present invention and effect:
The present invention is the power plant's automatic voltage control method that proposes based on the control command coding.Two major issues that control command occurs when adopting 3 or 4 integer-valued coded systems, this coded system to consider AVC system actual motion.One, control command is assigned is the increment of control generator high voltage bus voltage, but not directly assigns optimization target values, can avoid like this occurring when AVC main website and AVC power substation data source not simultaneously, may there be error in measurement, thereby produces the situation of incorrect voltage-regulation direction; Its two, coding has comprised control command round information, avoids disturbing because of communication port, when the AVC power substation is received continuous identical control command, can judge that whether control command is upgraded, and avoids causing the toning of power station voltage according to round information.And, if the interior AVC power substation of certain hour is not received the control command of new round, think that then the AVC main website withdraws from, the AVC power substation transfers local control model to.If the AVC power substation is received new control command again, then transferring reception AVC main website control command automatically to is distant place state of a control.Power plant's control command coded system that the present invention proposes has considered that employing issues control increment and two key factors of control command round information, can guarantee the actual normal operation of AVC system.
The method that the present invention proposes can be integrated in the on-the-spot operational system, realizes the automatism voltage control to power plant.
Embodiment
The power plant's automatic voltage control method based on the control command coding that the present invention proposes is described in detail as follows:
The present invention includes following steps:
1) a secondary voltage control cycle (routine is 5 minutes) beginning, current power plant control generator high voltage bus magnitude of voltage is gathered by the AVC main website, carries out power plant's secondary voltage control and calculates, and produces the control generator high voltage bus voltage optimization desired value V of power plant
Opt, and the magnitude of voltage (being sampled value) of current power plant control generator high voltage bus voltage is V
OurFor example A power plant controls the voltage optimization desired value V of No. 1 machine high voltage bus of generator
OptBe 223.0kV, and the current sampled value V of this busbar voltage
CurBe 229.5kV;
2) the AVC main website generates power plant's control command coding (for avoiding transmitting negative value, encoding by actual needs) and gets 3 or 4 integers according to the increment size and the adjusting direction of the adjusting of control generator high voltage bus voltage needs:
If coding adopts 3 integers, each bit value is defined as follows:
Hundred bit value are represented power plant's control generator high voltage bus voltage-regulation direction, and " 2 " expression is raised, " 1 " expression downward modulation, and other numerical value are thought disable instruction;
Ten digit value represents that a control command issues round, and numerical value increases progressively circulation from " 1 "-" 5 ", and the every round of AVC main website guarantees when issuing control command that this bit value is different with last round control command; If ten digit value in the scope of " 1 "-" 5 ", is not thought disable instruction; The AVC power substation preserve to be gone up the control command coding of round, obtain the control command coding of new round after, if find that the ten digit value of this control command coding is identical with last round numerical value, think this not renewal of round instruction;
Units represents to control generator high voltage bus voltage-regulation increment, get " 0 ", " 1 ", " 2 " ..., the numeral of " 7 " or " 8 "; Be that the voltage-regulation increment is by min{|V
Opt-V
Cur|, 0.8} multiply by 10 times and draws, and the data after the decimal point round up; As unit numbers " 7 " expression increment is 0.7kV, and in conjunction with hundred adjusting direction, how decision revises power plant's control generator high voltage bus voltage setting value.Adjusting increment in the ordinary circumstance one-period is no more than 0.8kV, and promptly a position maximum is " 8 ".
If current do not need to increase regulate power plant's control generator high voltage bus voltage, then send voltage retentive control instruction, being encoded to of individual position " 0 ".
Three control commands coding of the present invention illustrates as follows:
The first round time control command coding is " 216 ", and expression power plant high voltage bus voltage setting value need raise 0.6kV.The second round AVC main website calculates control generator optimization target values V by power plant's secondary voltage control
OptBe 230.0kV, the current sampled value of busbar voltage is V
CurBe 229.5kV, according to
Min{|V
Opt-V
Cur|, 0.8} * 10=min{|223.0-229.5|, 0.8} * 10=min{0.5,0.8} * 10=0.5 * 10=5 generates units value " 5 ", ten digit value increases progressively gets " 2 ", because be that voltage is raised in expectation, hundred bit value are got " 2 ", the last control command that generates is encoded to " 225 "; Third round is inferior, generator optimization target values V
OptWith the current sampled value of busbar voltage be V
CurAll be 230.0kV, formation voltage retentive control instruction, the units value is got " 0 ", ten digit value increases progressively gets " 3 ", hundred bit value are constant, get " 2 ", and the control command of Sheng Chenging is encoded to " 230 " at last; Four-wheel, the AVC main website calculates control generator optimization target values V by power plant's secondary voltage control
OptBe 229.0kV, the current sampled value of busbar voltage is V
CurBe 230.0kV, according to
Min{|V
Opt-V
Cur|, 0.8} * 10=min{|229.0-230.0|, 0.8} * 10=min{10,0.8} * 10=0.8 * 10=8 generates units value " 8 ", promptly the maximal regulated increment is 0.8kV, tens increases progressively gets " 4 ", because be expectation downward modulation voltage, hundred bit value are got " 1 ", the last control command that generates is encoded to " 148 ";
If coding adopts 4 integers, each bit value is defined as follows:
Wherein kilobit is represented power plant's control generator high voltage bus voltage-regulation direction, and " 2 " expression is raised, " 1 " expression downward modulation, and other numerical value are thought disable instruction;
Hundred bit value represent that a control command issues round, and numerical value increases progressively circulation from " 1 "-" 5 ", and the AVC main website guarantees when issuing control command that this bit value is different with last round control command at every turn.If ten digit value in the scope of " 1 "-" 5 ", is not thought disable instruction; The AVC power substation preserve to be gone up the control command coding of round, obtain the control command coding of new round after, if find that the ten digit value of this control command coding is identical with last round numerical value, think this not renewal of round instruction;
Ten and units value representation adjusting increment, get " 00 ", " 01 ", " 02 " ..., the numeral of " 09 " or " 10 ", the maximum of " 10 " expression voltage-regulation increment, " 00 " are represented the current adjusting power plant control generator high voltage bus voltage that do not need to increase; The voltage-regulation increment is according to min{|V
Opt-V
Cur|, 1.0} multiply by 10 times and draws, and the data after the decimal point round up.As " 07 " expression increment is 0.7kV, and in conjunction with the adjusting direction of kilobit, how decision revises power plant's control generator high voltage bus voltage setting value.The adjustment amount of ordinary circumstance one-period is no more than 1kV, and promptly ten is " 10 " with a maximum of position.
If current do not need to increase regulate power plant's control generator high voltage bus voltage, then send voltage retentive control instruction, being encoded to of ten and a position " 00 ".
Four control commands coding of the present invention illustrates as follows:
First round, control command are encoded to " 2106 ", and expression power plant control generator high voltage bus voltage setting value need raise 0.6kV.Second round, the AVC main website calculates control generator optimization target values V by power plant's secondary voltage control
OptBe 230.0kV, the current sampled value of busbar voltage is V
CurBe 229.5kV, according to
Min{|V
Opt-V
Cur|, 0.8} * 10=min{|223.0-229.5|, 0.8} * 10=min{0.5,0.8} * 10=0.5 * 10=5, generate ten and units value " 05 ", hundred bit value are got " 2 ", owing to be that voltage is raised in expectation, kilobit numerical value is got " 2 ", so the last control command that generates is encoded to " 2205 "; Third round is inferior, generator optimization target values V
OptWith the current sampled value of busbar voltage be V
CurAll be 230.0kV, formation voltage retentive control instruction, ten and units value are got " 00 ", and hundred bit value increase progressively gets " 3 ", and kilobit numerical value is constant, gets " 2 ", and the control command of Sheng Chenging is encoded to " 2300 " at last; Four-wheel, the AVC main website calculates control generator optimization target values V by power plant's secondary voltage control
OptBe 229.0kV, the current sampled value of busbar voltage is V
CurBe 230.1kV, according to
Min{|V
Opt-V
Cur|, 0.8} * 10=min{|229.0-230.1|, 1.0} * 10=min{11,1.0} * 10=1.0 * 10=10 generates ten and units value 10, promptly the maximal regulated increment is 1.0kV, hundred figure places increase progressively gets " 4 ", because be expectation downward modulation voltage, kilobit numerical value is got " 1 ", the last control command that generates is encoded to " 1410 ";
3) the AVC main website encodes to AVC power substation sending controling instruction, the AVC power substation is decoded according to the definition of coding numerical value after receiving the control command coding, according to decoded control command power plant's control generator high voltage bus voltage is carried out real-time regulated then; If surpassing, the AVC power substation do not receive that (routine was 15 minutes to the legal control command of having upgraded in 15 minutes, also can set the longer or shorter time) according to actual conditions, think that the AVC main website withdraws from, the AVC power substation automatically switches to local runtime, promptly do not accept AVC main website control command, control according to AVC power substation predetermined manner; If the AVC power substation is received the legal control command of having upgraded again, transfer automatically then that to receive AVC main website control command be distant place state of a control to, according to decoded control command power plant's control generator high voltage bus voltage is carried out real-time regulated;
For example, in the period 1, the AVC power substation is received the first round time control instruction " 2106 ", and power plant's control generator high voltage bus voltage setting value will raise 0.6kV; Second round the AVC power substation receive the second round control command " 2200 ", power plant control generator high voltage bus voltage keeps current voltage; Period 3 AVC power substation is received third round time idle control command " 1310 ", and power plant's control generator high voltage bus voltage setting value will be reduced 1.0kV; Period 4, the AVC power substation is received four-wheel time idle control command " 1310 ", then judges that by hundred bit value drawing this control command does not upgrade, and the AVC power substation is failure to actuate.
Equally, if certain round receives that control command is " 3310 ", kilobit numerical value is not " 1 " or " 2 ", thinks that this control command is a disable instruction.If certain round receives that control command is " 1608 ", hundred bit value think that this control command is a disable instruction not between " 1 "-" 5 ".If certain round receives that control command is " 2511 ", ten and units value surpass maximal regulated increment size " 10 ", think that this control command is a disable instruction.When receiving disable instruction, the AVC power substation all is failure to actuate.
If the AVC power substation surpasses when not receiving the legal control command of having upgraded in 15 minutes, think that the AVC main website withdraws from, the AVC power substation automatically switches to local runtime, promptly do not accept AVC main website control command, control according to AVC power substation predetermined manner, after for example transferring local runtime to, AVC power substation retentive control generator high voltage bus voltage is constant.If the AVC power substation is received the legal control command of having upgraded again, as " 1408 ", be four-wheel time legal control command, transfer automatically then that to receive AVC main website control command be distant place state of a control to.
4) after AVC main website control command coding issues and finishes, wait for entering the next round secondary voltage control cycle, change step 1).
With the voltage of No. 1 machine high voltage bus of A power plant control generator, adopting the control command of four codings is embodiment, and the power plant's automatic voltage control method based on the control command coding of the present invention is described, this method may further comprise the steps:
1) a secondary voltage control cycle (5 minutes) beginning, current power plant control generator high voltage bus magnitude of voltage is gathered by the AVC main website, carrying out power plant's secondary voltage control calculates, produce power plant's control generator high voltage bus voltage optimization desired value, produce the voltage optimization desired value V of No. 1 machine high voltage bus of power plant's control A power plant control generator
OptBe 223.0kV, and the current sampled value V of this busbar voltage
CurBe 229.5kV;
2) the AVC main website generates four of power plant's control commands and is encoded to according to the increment size and the adjusting direction of the adjusting of control generator high voltage bus voltage needs; According to
Min{|V
Opt-V
Cur|, 0.8} * 10=min{|223.0-229.5|, 0.8} * 10=min{0.5,0.8} * 10=0.5 * 10=5 generates ten and units value " 05 ", hundred bit value are got " X ", represent the sequence number of this round, because be that voltage is raised in expectation, kilobit numerical value is got " 2 ", the last control command that generates is encoded to " 2X05 ";
3) the AVC main website sends above-mentioned control command coding " 2X05 " to the AVC power substation, the AVC power substation is decoded according to the definition of coding numerical value after receiving the control command coding, according to decoded control command power plant's control generator high voltage bus voltage is carried out real-time regulated then, promptly raise 0.5kV in this cycle.
4) after AVC main website control command issues and finishes, wait for entering the next round secondary voltage control cycle, change step 1).
Claims (1)
1. power plant's automatic voltage control method based on control command coding is characterized in that this comprises the method following steps:
1) secondary voltage control cycle, current power plant control generator high voltage bus magnitude of voltage is gathered by the AVC main website, carries out power plant's secondary voltage control and calculates, and produces power plant's control generator high voltage bus voltage optimization desired value;
2) the AVC main website generates power plant's control command coding according to the increment size and the adjusting direction of the adjusting of control generator high voltage bus voltage needs, encodes and gets 3 or 4 integers:
If coding adopts 3 integers, each bit value is defined as follows:
Hundred bit value are represented power plant's control generator high voltage bus voltage-regulation direction, and " 2 " expression is raised, " 1 " expression downward modulation, and other numerical value are thought disable instruction;
Ten digit value represents that a control command issues round, and numerical value increases progressively circulation from " 1 "-" 5 ", and the every round of AVC main website guarantees when issuing control command that this bit value is different with last round control command; If ten digit value in the scope of " 1 "-" 5 ", is not thought disable instruction; The AVC power substation preserve to be gone up the control command coding of round, obtain the control command coding of new round after, if find that the ten digit value of this control command coding is identical with last round numerical value, think this not renewal of round instruction;
Units represents to control generator high voltage bus voltage-regulation increment, get " 0 ", " 1 ", " 2 " ..., the numeral of " 7 " or " 8 ", the maximum of " 8 " expression voltage-regulation increment, " 0 " are represented the current adjusting power plant control generator high voltage bus voltage that do not need to increase;
If coding adopts 4 integers, each bit value is defined as follows:
Kilobit is represented power plant's control generator high voltage bus voltage-regulation direction, and " 2 " expression is raised, " 1 " expression downward modulation, and other numerical value are thought disable instruction;
Hundred bit value represent that a control command issues round, and numerical value increases progressively circulation from " 1 "-" 5 ", and the every round of AVC main website guarantees when issuing control command that this bit value is different with last round control command; If ten digit value in the scope of " 1 "-" 5 ", is not thought disable instruction; The AVC power substation preserve to be gone up the control command coding of round, obtain the control command coding of new round after, if find that the ten digit value of this control command coding is identical with last round numerical value, think this not renewal of round instruction;
Ten and units value representation adjusting increment, get " 00 ", " 01 ", " 02 " ..., the numeral of " 09 " or " 10 ", the maximum of " 10 " expression voltage-regulation increment, " 00 " are represented the current adjusting power plant control generator high voltage bus voltage that do not need to increase;
3) the AVC main website encodes to AVC power substation sending controling instruction, the AVC power substation is decoded according to the definition of coding numerical value after receiving the control command coding, according to decoded control command power plant's control generator high voltage bus voltage is carried out real-time regulated then; Do not receive the legal control command of having upgraded in 15 minutes if the AVC power substation surpasses, think that the AVC main website withdraws from, the AVC power substation automatically switches to local runtime, does not promptly accept AVC main website control command, controls according to AVC power substation predetermined manner; If the AVC power substation is received the legal control command of having upgraded again, transfer automatically then that to receive AVC main website control command be distant place state of a control to, according to decoded control command power plant's control generator high voltage bus voltage is carried out real-time regulated;
4) after AVC main website control command coding issues and finishes, wait for entering the next round secondary voltage control cycle, change step 1).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331774A (en) * | 2011-07-15 | 2012-01-25 | 广东电网公司电力科学研究院 | Intelligent AVC (Automatic Voltage Control) regulating, controlling, evaluating and testing method and system |
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| CN105162128A (en) * | 2015-09-08 | 2015-12-16 | 国家电网公司 | Control method of rapid dynamic reactive power compensation equipment based on control command coding |
| CN106961110A (en) * | 2017-04-25 | 2017-07-18 | 广东电网有限责任公司电力调度控制中心 | Method for automatic controlling voltage of electrical power and system |
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| CN102331774A (en) * | 2011-07-15 | 2012-01-25 | 广东电网公司电力科学研究院 | Intelligent AVC (Automatic Voltage Control) regulating, controlling, evaluating and testing method and system |
| CN103023024A (en) * | 2012-11-30 | 2013-04-03 | 天津市电力公司 | Computing method for transmission grid active loss reduction by automatic voltage control |
| CN103023024B (en) * | 2012-11-30 | 2014-08-13 | 天津市电力公司 | Computing method for transmission grid active loss reduction by automatic voltage control |
| CN105162128A (en) * | 2015-09-08 | 2015-12-16 | 国家电网公司 | Control method of rapid dynamic reactive power compensation equipment based on control command coding |
| CN106961110A (en) * | 2017-04-25 | 2017-07-18 | 广东电网有限责任公司电力调度控制中心 | Method for automatic controlling voltage of electrical power and system |
| CN106961110B (en) * | 2017-04-25 | 2020-05-15 | 广东电网有限责任公司电力调度控制中心 | Automatic voltage control method and system for power system |
| CN108539753A (en) * | 2018-03-23 | 2018-09-14 | 国电南瑞科技股份有限公司 | Net, which saves, coordinates new energy station dynamic reactive deposit target assignment method |
| CN108539753B (en) * | 2018-03-23 | 2021-07-13 | 国电南瑞科技股份有限公司 | Dynamic reactive power reserve target distribution method for grid-provincial coordination new energy station |
| CN116093962A (en) * | 2023-04-11 | 2023-05-09 | 国网山西省电力公司运城供电公司 | Automatic voltage control method and device for new energy electric field based on double instructions |
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