CN111049272A - Energy-saving control system and control method of current collection circuit - Google Patents

Energy-saving control system and control method of current collection circuit Download PDF

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Publication number
CN111049272A
CN111049272A CN202010086727.1A CN202010086727A CN111049272A CN 111049272 A CN111049272 A CN 111049272A CN 202010086727 A CN202010086727 A CN 202010086727A CN 111049272 A CN111049272 A CN 111049272A
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CN
China
Prior art keywords
control system
current collecting
switching
current
command
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Pending
Application number
CN202010086727.1A
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Chinese (zh)
Inventor
刘思豪
龙琳
黄克敬
Original Assignee
赵晓光
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Application filed by 赵晓光 filed Critical 赵晓光
Priority to CN202010086727.1A priority Critical patent/CN111049272A/en
Publication of CN111049272A publication Critical patent/CN111049272A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an energy-saving control system and a control method of a current collecting circuit, wherein the control system comprises a multifunctional controller and a main loop breaker, and the control circuit performs switching-on or switching-off actions on the control system to enable the system to be in a normal running or power failure state; current transformer and voltage transformer: used for isolating and measuring with the current collecting circuit; the control method comprises the following steps: and transmitting a power transmission/power failure command remotely or on site, transmitting a switching-on command or a switching-off command to the main circuit breaker, and uploading a control system state signal to a control center. The intervention operation of the control system can reduce no-load loss, reduce the equipment operation risk caused by frequent start and stop of the high-voltage current collecting line, play a role in energy conservation and consumption reduction, and realize the current collecting line start and stop operation functions in manual/automatic modes as required on the premise of ensuring the economic operation of the power station current collecting line.

Description

Energy-saving control system and control method of current collection circuit
Technical Field
The present invention relates to an energy saving control system and a control method, and more particularly, to an energy saving control system and a control method for a current collecting circuit.
Background
Due to the limitation of the design of the current photovoltaic power station and the self characteristics of the configured distribution equipment, frequent operation of starting and stopping the current collection circuit every day cannot be realized, when the photovoltaic power station does not generate electricity at night, only the photovoltaic inverter is disconnected, the box transformer is still connected with a power grid through the current collection circuit, and no-load loss of the power station is caused by no-load operation of the transformer.
Disclosure of Invention
The invention aims to provide an energy-saving control system and a control method of a current collecting circuit, which solve the defects in the prior art.
The invention is realized by adopting the following technical scheme:
an energy-saving control system for a current collecting line, characterized in that the control system comprises:
the multifunctional controller comprises: the intelligent control system is used for receiving control signals from the outside, detecting acquisition signals of a current transformer and a voltage transformer in the control system, judging the states of a bypass switch and a main circuit breaker in the control system, and carrying out switching-on or switching-off intelligent operation on the main circuit breaker and the bypass switch according to a control strategy preset by the system;
main circuit breaker: switching on or switching off is carried out, so that the system is in a normal operation state or a power failure state, and daily high-frequency starting and stopping operation can be met;
current transformer and voltage transformer: for isolation from the collector line and measurement.
An energy-saving control method for a current collection circuit is characterized by comprising the following steps:
1) issuing a power transmission/power failure command remotely or on site, detecting the collected signals of a current transformer and a voltage transformer on a current collection circuit by a multifunctional controller, and judging the states of a bypass switch and a main loop circuit breaker;
2) when the condition of putting into operation is met, a closing command is sent to a main loop circuit breaker, the system conducts a loop through a reactor, the multifunctional controller carries out online monitoring on the current collecting circuit, after the current collecting circuit meets the required electrical state, the multifunctional controller sends the closing command to start a bypass switch to close, and the system is switched to normal operation;
or
When the shutdown condition is met, a brake separating command is sent to the bypass switch, the bypass loop is disconnected, the multifunctional controller detects and confirms that the current collecting line meets the shutdown condition, a tripping command is sent to the main loop breaker, the main loop breaker trips, and the system quits running;
3) and the multifunctional controller uploads the control system state signal to the control center.
The beneficial technical effects of the invention are as follows:
the intervention operation of the control system reduces the no-load loss, reduces the equipment operation risk caused by frequent start and stop of the high-voltage current collecting line, plays a role in energy conservation and consumption reduction, and can realize the current collecting line start and stop operation functions in manual/automatic modes as required on the premise of ensuring the economic operation of the power station current collecting line.
Drawings
Fig. 1 is a topology structural diagram of a control system.
Detailed Description
The invention will be better understood by the following description of embodiments thereof, but the applicant's specific embodiments are not intended to limit the invention to the particular embodiments shown, and any changes in the definition of parts or features and/or in the overall structure, not essential changes, are intended to define the scope of the invention.
Bypass switch 1, main circuit breaker 2, reactor 3, current transformer 4, voltage transformer 5, multifunctional controller 6, current collection circuit 7
As shown in fig. 1, a current transformer 4 and a voltage transformer 5 are connected to a current collecting line 7, and a multifunctional controller 6 is configured to receive a control signal from the outside, detect collected signals of the current transformer 4 and the voltage transformer 5 in a control system, perform state judgment on a bypass switch 1 and a main circuit breaker 2 in the control system, and control the main circuit breaker to perform switching on or off; and according to a control strategy preset by the system, intelligently operating the switching-on or switching-off of the main circuit breaker 2 and the bypass switch 1.
(1) Current collection circuit power transmission: after long-range or on-the-spot transmission command of giving, multi-function control ware 6 detects current transformer 4 and voltage transformer 5's collection signal on the current collection circuit at first, and carry out the state judgement to bypass switch 1 and main loop circuit breaker 2, after satisfying the commissioning condition, send the combined floodgate order and give main loop circuit breaker 2 rapid closing action, the system switches on the return circuit through reactor 3, multi-function control ware 6 carries out on-line monitoring to the current collection circuit, treat that the current collection circuit satisfies required electrical condition after, multi-function control ware 6 sends the combined floodgate order and starts bypass switch 1 and close the floodgate, the system changes over into the normality operation, multi-function control ware 6 uploads control system state signal distant place control center.
(2) Power failure of the current collection circuit: after a power transmission command is issued remotely or on site, the multifunctional controller 6 firstly detects the acquisition signals of the current transformer 4 and the voltage transformer 5 on the current collection circuit, judges the states of the bypass switch 1 and the main loop circuit breaker 2, sends a brake separating command to the bypass switch 1 after the shutdown condition is met, disconnects the bypass loop, sends a tripping command to the main loop circuit breaker 2 to perform tripping after the multifunctional controller 6 detects and confirms that the current collection circuit meets the shutdown condition, the system quits running, the current collection circuit is switched into a power failure state, and the multifunctional controller 6 uploads a control system state signal to a remote control center.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.

Claims (2)

1. An energy-saving control system for a current collecting line, characterized in that the control system comprises:
the multifunctional controller comprises: the intelligent control system is used for receiving control signals from the outside, detecting acquisition signals of a current transformer and a voltage transformer in the control system, judging the states of a bypass switch and a main circuit breaker in the control system, and carrying out switching-on or switching-off intelligent operation on the main circuit breaker and the bypass switch according to a control strategy preset by the system;
main circuit breaker: switching on or switching off to make the system in normal operation or power failure state;
current transformer and voltage transformer: used for isolating and measuring with the high-voltage loop of the collecting line.
2. An energy-saving control method for a current collection circuit is characterized by comprising the following steps:
1) issuing a power transmission/power failure command remotely or on site, detecting the collected signals of a current transformer and a voltage transformer on a current collection circuit by a multifunctional controller, and judging the states of a bypass switch and a main loop circuit breaker;
2) when the condition of putting into operation is met, a closing command is sent to a main loop circuit breaker, the system conducts a loop through a reactor, the multifunctional controller carries out online monitoring on the current collecting circuit, after the current collecting circuit meets the required electrical state, the multifunctional controller sends the closing command to start a bypass switch to close, and the system is switched to normal operation;
or
When the shutdown condition is met, a brake separating command is sent to the bypass switch, the bypass loop is disconnected, the multifunctional controller detects and confirms that the current collecting line meets the shutdown condition, a tripping command is sent to the main loop breaker, the main loop breaker trips, and the system quits running;
3) and the multifunctional controller uploads the control system state signal to the control center.
CN202010086727.1A 2020-02-11 2020-02-11 Energy-saving control system and control method of current collection circuit Pending CN111049272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010086727.1A CN111049272A (en) 2020-02-11 2020-02-11 Energy-saving control system and control method of current collection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010086727.1A CN111049272A (en) 2020-02-11 2020-02-11 Energy-saving control system and control method of current collection circuit

Publications (1)

Publication Number Publication Date
CN111049272A true CN111049272A (en) 2020-04-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010086727.1A Pending CN111049272A (en) 2020-02-11 2020-02-11 Energy-saving control system and control method of current collection circuit

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CN (1) CN111049272A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2296083Y (en) * 1997-05-28 1998-10-28 秦文波 High voltage circuit short-circuit fault protector
CN202495699U (en) * 2012-03-22 2012-10-17 汉中安特电气有限公司 Photovoltaic grid-connected power generation voltage-boosting intelligent box-type transformer substation
CN106159997A (en) * 2016-07-13 2016-11-23 上能电气股份有限公司 The control method of eliminating transformer open circuit loss in a kind of photovoltaic system
CN205863673U (en) * 2016-06-24 2017-01-04 苏州爱康能源工程技术股份有限公司 The energy-conservation Intelligent control cabinet of photovoltaic generating system
CN205960668U (en) * 2016-08-22 2017-02-15 江苏华源新能源科技有限公司 Photovoltaic power plant is with energy -conserving protection switch device
CN206471836U (en) * 2017-02-03 2017-09-05 河南森源电气股份有限公司 A kind of photovoltaic case becomes night from disengaging power network energy-saving cabinet and photovoltaic generating system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2296083Y (en) * 1997-05-28 1998-10-28 秦文波 High voltage circuit short-circuit fault protector
CN202495699U (en) * 2012-03-22 2012-10-17 汉中安特电气有限公司 Photovoltaic grid-connected power generation voltage-boosting intelligent box-type transformer substation
CN205863673U (en) * 2016-06-24 2017-01-04 苏州爱康能源工程技术股份有限公司 The energy-conservation Intelligent control cabinet of photovoltaic generating system
CN106159997A (en) * 2016-07-13 2016-11-23 上能电气股份有限公司 The control method of eliminating transformer open circuit loss in a kind of photovoltaic system
CN205960668U (en) * 2016-08-22 2017-02-15 江苏华源新能源科技有限公司 Photovoltaic power plant is with energy -conserving protection switch device
CN206471836U (en) * 2017-02-03 2017-09-05 河南森源电气股份有限公司 A kind of photovoltaic case becomes night from disengaging power network energy-saving cabinet and photovoltaic generating system

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