CN107015487B - Primary simulation system and method for transformer substation capable of reminding load shedding of bus - Google Patents
Primary simulation system and method for transformer substation capable of reminding load shedding of bus Download PDFInfo
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- CN107015487B CN107015487B CN201710428690.4A CN201710428690A CN107015487B CN 107015487 B CN107015487 B CN 107015487B CN 201710428690 A CN201710428690 A CN 201710428690A CN 107015487 B CN107015487 B CN 107015487B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
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Abstract
The invention discloses a primary simulation system and a primary simulation method for a transformer substation, which can remind a bus to throw load, wherein the primary simulation system comprises a simulation system corresponding to a primary system of the transformer substation, the primary system of the transformer substation is a double-bus operation system comprising an I bus and an II bus, a rotary small switch is arranged at a switch of a sectionalized or bus connection interval, a main transformer interval and a bus side isolating switch, an on-off signal of the rotary small switch is connected into a logic circuit, and the output of the logic circuit is connected with a triode for controlling a buzzer to be connected with or disconnected from a power supply; when the power supply is completely disconnected under the condition of load, the buzzer alarms. The load shedding misoperation without monitoring measures at present is added into the control of a primary system simulation diagram, so that the misoperation risk is reduced, and the switching operation safety is ensured.
Description
Technical Field
The invention relates to the technical field of substation simulation operation, in particular to a primary substation simulation system and method capable of reminding a bus of load shedding.
Background
With the rapid increase of the electricity consumption, the transformer substation and the power plant are rapidly developed, and accordingly, switching operations are more and more. The switching operation is a very strict work, and a small error can cause accidents, so that loss is caused. At present, most types of misoperation can be controlled through an anti-misoperation locking device and an electromagnetic lock of equipment, but bus load shedding misoperation has no control measure, the correctness of operation is judged only by experience and knowledge of power transformation operation and maintenance personnel, and once the accidents occur, the loss of the accidents is several times or even more than ten times compared with single-line operation.
The primary system simulation diagram is a necessary device for operation and operation of the transformer substation, and in switching operation, an operator performs checkup simulation preview on the primary system simulation diagram and then performs actual operation on site. The traditional primary system simulation diagram only plays roles of simply displaying the opening and closing positions of the switch and the knife switch and simulating operation, and cannot verify the correctness of the operation ticket.
Disclosure of Invention
The invention aims to solve the problems, and provides a primary simulation system and method for a transformer substation, which can remind a bus of load shedding, and can remind whether the load shedding exists or not through a logic circuit during simulation operation, so that the correctness of an operation ticket is verified.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the primary simulation system of the transformer substation capable of reminding the load shedding of the bus comprises a simulation system corresponding to the primary system of the transformer substation, wherein the primary system of the transformer substation is a double-bus operation system comprising an I bus and an II bus,
a rotary small switch is arranged at the switch of the subsection or bus connection interval, the main transformer interval and the outlet interval and the bus side isolating switch, the turn-off signal of the rotary small switch is connected into a logic circuit, and the output of the logic circuit is connected with a triode for controlling the buzzer to turn on or off the power supply; when the power supply is completely disconnected under the condition of load, the buzzer alarms.
The logic circuit comprises an I bus logic circuit and a II bus logic circuit, and the outputs of the I bus logic circuit and the II bus logic circuit are respectively connected with a first buzzer and a second buzzer through triodes;
when the power supply side of the I bus is completely disconnected and the I bus is loaded, the first buzzer alarms; and when the power supply side of the II bus is completely disconnected and the II bus is loaded, the second buzzer alarms.
The I bus logic circuit comprises an I bus power supply side logic circuit and an I bus load side logic circuit, the outputs of the I bus power supply side logic circuit and the I bus load side logic circuit are connected with an AND gate, the output of the AND gate is connected with an I bus triode, and the I bus triode controls the first buzzer to be connected with or disconnected from a power supply.
The power supply side logic circuit of the I bus comprises that for the I bus, state signals of all rotary small switches on the same inlet wire of the power supply side are connected with an AND gate, then output signals of the AND gates between different inlet wires are connected with an OR gate, and the output signals are output as OR gate signals;
the state signals of all the rotary small switches on the bus are also connected with an AND gate, and output as AND gate signals;
and the OR gate signal is connected with the AND gate signal and then is connected with the NOT gate, and the output signal of the NOT gate is the final signal output by the logic circuit at the power supply side of the I bus.
The I bus load side logic circuit comprises a state signal phase or result of the rotary small switch at all outlet intervals for the I bus is an output final signal of the I bus load side logic circuit.
The II bus logic circuit comprises an II bus power supply side logic circuit and an II bus load side logic circuit, the outputs of the II bus power supply side logic circuit and the II bus load side logic circuit are connected with an AND gate, the output of the AND gate is connected with an II bus triode, and the II bus triode controls the second buzzer to be connected with or disconnected from the power supply.
The power supply side logic circuit of the II bus comprises that for the II bus, state signals of all rotary small switches on the same inlet wire of the power supply side are connected with an AND gate, then output signals of the AND gates between different inlet wires are connected with an OR gate, and the output signals are output as OR gate signals;
the state signals of all the rotary small switches on the bus are also connected with an AND gate, and output as AND gate signals;
and the OR gate signal is connected with the AND gate signal and then is connected with the NOT gate, and the output signal of the NOT gate is the final signal output by the logic circuit at the power supply side of the bus II.
The load side logic circuit of the II bus comprises a state signal phase or result of the rotary small switch at all outlet intervals for the II bus is an output final signal of the load side logic circuit of the II bus.
A simulation method of a primary simulation system of a transformer substation capable of reminding a bus to throw load comprises the following steps:
step one, manufacturing a corresponding primary simulation system according to a specific primary system wiring diagram of a transformer substation;
step two, a rotary small switch is arranged at the switch of the subsection or bus connection interval, the main transformer interval and the outlet interval and the bus side isolating switch;
step three, an on-off signal of the rotary small switch is connected into a logic circuit, and the output of the logic circuit is connected with a triode for controlling the buzzer to be connected with a power supply or disconnected with the power supply; when the power supply is completely disconnected under the condition of load, the buzzer alarms.
In the third step, for the dual bus operation system, the two buses need to be connected with logic circuits separately, and whether the power supply is disconnected under the condition that the load exists on the buses is judged respectively.
The invention has the beneficial effects that:
the load shedding misoperation without monitoring measures at present is added into the control of a primary system simulation diagram, so that the misoperation risk is reduced, and the switching operation safety is ensured.
Drawings
FIG. 1 is a primary system diagram of the present embodiment;
FIG. 2 is a system diagram of the present embodiment after the rotary small switch is added;
fig. 3 is a diagram of a bus logic circuit according to embodiment I.
Detailed Description
The invention will be further described with reference to the drawings and examples.
The invention is directed to a substation with dual bus operation. The double buses with the same voltage level are used as a unit to manufacture the simulation, the correctness of the load reversing operation is judged when the simulation checking and the replay are carried out in the switching operation, and an alarm is given when the misoperation of the load throwing of the buses occurs, so that an operator is reminded of 'the ticket error can cause the load throwing of the buses, and the on-site operation cannot be carried out'.
The logic circuit is additionally arranged on the traditional primary system simulation diagram, and the module can be used as a small unit to be assembled into the primary system simulation diagram of the transformer substation. In operation, if the load of the bus is thrown due to the error of the operation ticket, the bus can be alarmed in the process of the checkable simulation replay, so that a worker is reminded of that the ticket is wrong, the load of the bus can be thrown, and the on-site operation cannot be performed, thereby reducing the risk of misoperation and ensuring the safety of switching operation.
The specific implementation method of the invention comprises the following steps:
1. the analog board is made of the prior art and materials, and rotary small switches are arranged at the switch of the subsection or bus connection interval, the main transformer interval and the outlet interval and the bus side isolating switch and are denoted by K1, K2 and K3 … ….
2. The logic circuit board is soldered. The signal sources of the circuit are K1, K2 and K3 … ….
3. Selecting the same number of analog boards according to the voltage class number of the transformer substation for combination, and using mosaic sticker on the drawing board
Numbering and naming is done. The redundant spaces on the drawing board are not labeled.
In the primary system simulation diagram, a rotary small switch is additionally arranged at the positions of a needed switch and a needed disconnecting link (a bus-bar switch, a main transformer switch, a bus-bar side disconnecting link, an outgoing line switch and a bus-bar side disconnecting link), a handle of the rotary small switch is screwed to be vertical to be off, and the handle of the rotary small switch is horizontal to be on (the small switch which is additionally arranged when the switch in the primary diagram panel is in a closed position is separated, and the small switch which is additionally arranged when the switch in the primary diagram panel is in a closed position is separated). The information of the on and off of the small switch is used as the input of the logic circuit, whether the load normally supplies power or not is judged by the logic circuit, and if the power is completely off under the condition of the load, the buzzer alarms.
In this embodiment, the double buses with the same voltage level are used as a unit, and a primary diagram is shown in fig. 1.
The figure is the basis for manufacturing the primary plate of the combined unit, and the number is not marked because of different numbering rules in various places, a user is required to paste a name and a number by using a sticker, and the sticker is only required to be removed and replaced with a new name or number when the transformer substation is transformed. In the figure, a main transformer #1, a main transformer #2 and a main transformer #3 are main transformer incoming lines, and the lower right is an outgoing line interval. More than field intervals are not labeled.
The load shedding of the bus means that the bus loses power under the condition of carrying an outgoing load, and for the bus in fig. 1, the load side means seven outgoing lines and a variable interval; the power supply side refers to a #1 main transformer, a #2 main transformer, a #3 main transformer and a bus-bar switch. When the coincidence interval is in an operation or hot standby state, namely the bus side isolating switch of the outlet interval is in a closing position, and all the power supply side switches are not operated or are not operated on the bus, the bus load shedding misoperation occurs.
1. A rotary switch is additionally arranged to make a logic circuit diagram.
The logic of the I bus is described in detail herein, and the principle and wiring of the II bus are the same as those of the I bus.
K in FIG. 2 1 To K 16 To rotate the mounting position of the switch, the rotary handle is turned off vertically and turned on horizontally. K (K) 1 、K 3 、K 5 K is a rotary switch on the main transformer incoming line switch 2 、K 4 、K 6 …K 14 Is an isolating switch between the outlet interval and the bus.
The corresponding I bus logic circuit diagram is shown in fig. 3. In the figure, VDD is the operating voltage, GND is the power supply ground voltage, and VDD is the 5V dc power supply.
And (3) adding a rotary small switch at the corresponding position of the traditional primary system analog diagram, and welding a logic circuit. The principle and wiring of the II buses are the same as those of the I buses, and the analog board combined unit needs to be welded with the I bus logic circuit and the II bus logic circuit.
Materials needed in the logic circuit:
and (3) a chip: 74HC32, 74HC08, 74HC04;
a buzzer: a 5V active buzzer, 12mm diameter by 9.5mm height;
a wire: pure copper 0.1 mm flexible electric wire
And (3) a power supply: 5V ultra-thin switching power supply, model: MW-10-24, input: 90-260VAC 0.8A 50/60Hz, output: 24VDC 0.5A, size: 78 x 48 x 21mm.
Resistance: 1k ohm
Triode: model 8050
When a transformer station has three voltage levels of 35kV, 220kV and 110kV, if 220kV and 110kV are in double-bus operation and 35kV is in single-bus sectional operation, the station needs to be marked on 220kV and 110kV by using the simulation system and the method provided by the invention, names and numbers are marked by using stickers, and redundant intervals are not marked. 35kV is single bus sectional operation, and the risk of reverse load misoperation does not exist, so that a traditional primary system simulation diagram is still used. The main transformer and the connection between the units are connected by using the lines in the traditional primary system simulation diagram.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (4)
1. The primary substation simulation system is characterized by comprising a simulation system corresponding to a primary substation system, wherein the primary substation system is a double-bus operation system comprising an I bus and an II bus;
a rotary small switch is arranged at the switch of the subsection or bus connection interval, the main transformer interval and the outlet interval and the bus side isolating switch, the turn-off signal of the rotary small switch is connected into a logic circuit, and the output of the logic circuit is connected with a triode for controlling the buzzer to turn on or off the power supply; when the power supply is completely disconnected under the condition of load, the buzzer alarms;
the logic circuit comprises an I bus logic circuit and a II bus logic circuit, and the outputs of the I bus logic circuit and the II bus logic circuit are respectively connected with a first buzzer and a second buzzer through triodes;
when the power supply side of the I bus is completely disconnected and the I bus is loaded, the first buzzer alarms; when the power supply side of the II bus is completely disconnected and the II bus is loaded, the second buzzer alarms;
the I bus logic circuit comprises an I bus power supply side logic circuit and an I bus load side logic circuit, the outputs of the I bus power supply side logic circuit and the I bus load side logic circuit are connected with an AND gate, the output of the AND gate is connected with an I bus triode, and the I bus triode controls the first buzzer to be connected or disconnected;
the power supply side logic circuit of the I bus comprises that for the I bus, state signals of all rotary small switches on the same inlet wire of the power supply side are connected with an AND gate, then output signals of the AND gates between different inlet wires are connected with an OR gate, and the output signals are output as OR gate signals;
the state signals of all the rotary small switches on the bus are also connected with an AND gate, and output as AND gate signals;
the OR gate signal is connected with the AND gate signal and then is connected with an NOT gate, and the output signal of the NOT gate is the final signal output by the logic circuit at the power supply side of the I bus;
the I bus load side logic circuit comprises a state signal phase or result of the rotary small switch at all outlet intervals for the I bus is an output final signal of the I bus load side logic circuit.
2. The primary transformer substation simulation system capable of reminding a bus of load shedding according to claim 1, wherein the II bus logic circuit comprises a II bus power supply side logic circuit and a II bus load side logic circuit, outputs of the II bus power supply side logic circuit and the II bus load side logic circuit are connected with an AND gate, an output of the AND gate is connected with a II bus triode, and the II bus triode controls the second buzzer to be connected with or disconnected from a power supply.
3. The primary simulation system of the transformer substation capable of reminding a bus of load shedding according to claim 2, wherein the power supply side logic circuit of the II bus comprises, for the II bus, state signals of all rotary small switches on the same wire inlet of the power supply side are connected with an AND gate, then output signals of the AND gates between different wires are connected with an OR gate, and the output signals are output as OR gate signals;
the state signals of all the rotary small switches on the bus are also connected with an AND gate, and output as AND gate signals;
and the OR gate signal is connected with the AND gate signal and then is connected with the NOT gate, and the output signal of the NOT gate is the final signal output by the logic circuit at the power supply side of the bus II.
4. The primary substation simulation system capable of reminding a bus of load shedding according to claim 2, wherein the II bus load side logic circuit comprises a state signal phase or result of a rotary small switch at all outlet intervals for the II bus is an output final signal of the II bus load side logic circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710428690.4A CN107015487B (en) | 2017-06-08 | 2017-06-08 | Primary simulation system and method for transformer substation capable of reminding load shedding of bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710428690.4A CN107015487B (en) | 2017-06-08 | 2017-06-08 | Primary simulation system and method for transformer substation capable of reminding load shedding of bus |
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| CN107015487A CN107015487A (en) | 2017-08-04 |
| CN107015487B true CN107015487B (en) | 2023-09-15 |
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Families Citing this family (1)
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| CN112433118B (en) * | 2020-11-16 | 2022-07-01 | 国网山东省电力公司聊城供电公司 | Anti-misoperation simulation device and method for 10kV medium-voltage power generation vehicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1415706A1 (en) * | 1961-10-18 | 1968-10-24 | Josef Eisert | Circuit arrangement for block power plants |
| JPH0583882A (en) * | 1991-09-18 | 1993-04-02 | Energy Support Corp | Low-voltage uninterruptive switching device of transformer and method for switching and switching back by the device |
| CN101694505A (en) * | 2009-09-24 | 2010-04-14 | 江苏省电力公司南通供电公司 | Method for simulating load test with transformer substation bus differential protection current |
| CN201541058U (en) * | 2009-06-09 | 2010-08-04 | 叶宏 | Intelligent misoperation prevention system of substation primary equipment |
| CN202696129U (en) * | 2012-07-12 | 2013-01-23 | 华北电力科学研究院(西安)有限公司 | Bus bar differential structure of booster station in electric one-through connection mode |
| CN205507422U (en) * | 2016-04-18 | 2016-08-24 | 中国神华能源股份有限公司 | A back brake system for electric substation |
| CN106024492A (en) * | 2016-07-15 | 2016-10-12 | 山东钢铁股份有限公司 | Dual-bus disconnecting switch operation blocking electric circuit |
| CN106129970A (en) * | 2016-08-01 | 2016-11-16 | 国网河北省电力公司电力科学研究院 | A kind of simple bus bar protecting method for intelligent substation low-voltage bus bar |
| CN106505529A (en) * | 2016-11-09 | 2017-03-15 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of intelligent substation low-voltage bus bar guard method |
| CN206773427U (en) * | 2017-06-08 | 2017-12-19 | 国网山东省电力公司莱芜供电公司 | A kind of transforming plant primary simulation system that can remind bus removal of load |
-
2017
- 2017-06-08 CN CN201710428690.4A patent/CN107015487B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1415706A1 (en) * | 1961-10-18 | 1968-10-24 | Josef Eisert | Circuit arrangement for block power plants |
| JPH0583882A (en) * | 1991-09-18 | 1993-04-02 | Energy Support Corp | Low-voltage uninterruptive switching device of transformer and method for switching and switching back by the device |
| CN201541058U (en) * | 2009-06-09 | 2010-08-04 | 叶宏 | Intelligent misoperation prevention system of substation primary equipment |
| CN101694505A (en) * | 2009-09-24 | 2010-04-14 | 江苏省电力公司南通供电公司 | Method for simulating load test with transformer substation bus differential protection current |
| CN202696129U (en) * | 2012-07-12 | 2013-01-23 | 华北电力科学研究院(西安)有限公司 | Bus bar differential structure of booster station in electric one-through connection mode |
| CN205507422U (en) * | 2016-04-18 | 2016-08-24 | 中国神华能源股份有限公司 | A back brake system for electric substation |
| CN106024492A (en) * | 2016-07-15 | 2016-10-12 | 山东钢铁股份有限公司 | Dual-bus disconnecting switch operation blocking electric circuit |
| CN106129970A (en) * | 2016-08-01 | 2016-11-16 | 国网河北省电力公司电力科学研究院 | A kind of simple bus bar protecting method for intelligent substation low-voltage bus bar |
| CN106505529A (en) * | 2016-11-09 | 2017-03-15 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of intelligent substation low-voltage bus bar guard method |
| CN206773427U (en) * | 2017-06-08 | 2017-12-19 | 国网山东省电力公司莱芜供电公司 | A kind of transforming plant primary simulation system that can remind bus removal of load |
Non-Patent Citations (2)
| Title |
|---|
| 孟志刚 ; .双母线倒闸操作的原则及危险点的预控措施.中小企业管理与科技(下旬刊).2013,(第03期),324-325. * |
| 杨智睿 ; .变电运行倒闸操作顺序分析.内蒙古电力技术.2012,第30卷(第06期),113-117. * |
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