WO2018119813A1 - Procédé intelligent de distribution d'énergie électrique - Google Patents

Procédé intelligent de distribution d'énergie électrique Download PDF

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Publication number
WO2018119813A1
WO2018119813A1 PCT/CN2016/112837 CN2016112837W WO2018119813A1 WO 2018119813 A1 WO2018119813 A1 WO 2018119813A1 CN 2016112837 W CN2016112837 W CN 2016112837W WO 2018119813 A1 WO2018119813 A1 WO 2018119813A1
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WO
WIPO (PCT)
Prior art keywords
load
capacity
plc controller
priority
grid
Prior art date
Application number
PCT/CN2016/112837
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English (en)
Chinese (zh)
Inventor
李姗姗
Original Assignee
李姗姗
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 李姗姗 filed Critical 李姗姗
Priority to PCT/CN2016/112837 priority Critical patent/WO2018119813A1/fr
Publication of WO2018119813A1 publication Critical patent/WO2018119813A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting

Definitions

  • the invention relates to the field of electricity, and in particular to a method for intelligently distributing electric energy.
  • India's per capita electricity generation in 2005 was only 639 kWh, far below the world standard by at least four times.
  • Coal which emits a large amount of carbon-contaminated gas, is the main fuel used by India to generate electricity, accounting for more than two-thirds of the total power generation.
  • coal will continue to be India's continued dependence on extremely deep fuel for power generation.
  • India's coal-fired thermal power plant is the least efficient power plant in the world.
  • the invention provides a method for intelligently distributing electric energy, which solves the problem of rationally distributing electric energy in an underdeveloped area, and further solves the problem of insufficient power supply.
  • An intelligent power distribution method for classifying a supply load including a primary load, a secondary load, an n-level load, each load is connected to the grid through a total relay, and each load further includes multiple loads.
  • Set the priority of the load adopt the method of hierarchical power supply, take the PLC controller as the control core, obtain the load start situation in real time, record the working status of each relay through the PLC controller, and control each relay, priority After the high load is started, a reasonable push mechanism is adopted for the load with low priority to optimize the system power allocation;
  • the working state of the system load is real-time statistically in the PLC controller.
  • the status register of the PLC controller opens up a separate space, and the corresponding bit is reserved for each load in the system.
  • the system adds a new load, and the staff updates the status of the PLC controller in time. Register; when the load is working, its corresponding position is 1, the load does not work, and its corresponding value is set to 0;
  • the PLC controller calculates the total real-time load capacity of the system according to the status register. If the grid capacity is higher than the total real-time load capacity of the system and maintains the current system load status, the PLC controller turns on the relay corresponding to each load; if the grid capacity is lower than the total real-time load capacity of the system.
  • the PLC controller is allowed to open according to the priority level, and the load with high priority is forbidden. The load with low priority is forbidden to access. When the load with high priority exits, the load to be accessed is connected to the grid according to the priority level.
  • the PLC controller calculates the total real-time load capacity of the system according to the status register, and compares the load with the status bit 1 with the rated power of the load registration compared with the grid capacity. If the grid capacity is higher than the total real-time load capacity of the system, Maintain the system load state before the abnormality, regardless of the grade, all the loads are running normally, and the PLC controller turns on the relay corresponding to each level of load;
  • the PLC controller first guarantees the first-level load supply according to the priority level; if the total capacity of the first-level load is lower than the grid capacity, the next-stage load is turned on until the secondary load When the sum of the accumulated total capacity and the total capacity of the primary load is higher than the capacity of the power grid, the secondary load is selected according to the priority;
  • the PLC controller sets its corresponding status bit to 0, releases the power supply capacity to the low priority load, and normally accesses when the low level load requires access.
  • the present invention proposes an admission and exit mechanism for each load, enabling automatic optimal switching between loads.
  • FIG. 1 is a schematic block diagram of a method for intelligently distributing electric energy according to the present invention.
  • the invention provides a method for intelligently distributing electric energy, which classifies system load, including primary load, secondary load, ... n-level load, adopts hierarchical power supply mode by setting priority of load, and PLC controller
  • the load start situation is obtained in real time. After the load with high priority is started, a reasonable push mechanism is adopted for the load with low priority to optimize the power allocation of the system.
  • the power intelligent intelligent distribution method of the present invention takes a PLC controller as a control core, records the working state of each relay through a PLC controller, and controls each relay.
  • the system load includes the primary load, the secondary load, the n-level load, and each load is connected to the UPS through a total relay, and each load also includes multiple loads.
  • the working state of the system load is real-time statistically in the PLC controller.
  • the status register of the PLC controller opens up a separate space, and the corresponding bit is reserved for each load in the system. The system adds a new load, and the staff needs to update the PLC controller in time. Status register. When the load is working, its corresponding position is 1, the load does not work, and its corresponding is set to 0. The status register is updated in real time, so the PLC controller can monitor each load status in real time.
  • the PLC controller calculates the total real-time load capacity of the system according to the status register. If the grid capacity is higher than the total real-time load capacity of the system and maintains the current system load status, the PLC controller turns on the relay corresponding to each load; if the grid capacity is lower than the total real-time load capacity of the system.
  • the PLC controller is allowed to open according to the priority level, the load with high priority, and the load with low priority The access is forbidden. When the load with a high priority is removed, the load to be accessed is connected to the power grid according to the priority.
  • the power intelligent distribution method of the present invention can implement automatic switching of loads, and the present invention will be described in detail below in conjunction with specific embodiments.
  • the power intelligent distribution method of the present invention includes a primary load, a secondary load, and the like.
  • the primary load includes load 111, load 112, ... load 11n
  • secondary load includes load 121, load 122, ... load 12n, ...
  • n-level load includes load 1n1, load 1n2, ... load 1nn.
  • the primary load is connected to the grid via a total relay 1, and the load 111, the load 112, ... the load 11n are respectively connected to the primary load total relay 1.
  • the secondary load is connected to the grid via a total relay 2, and the load 121, load 122, ... load 12n are respectively connected to the secondary load total relay 2.
  • the n-stage load is connected to the grid through a total relay n, and the load 1n1, the load 1n2, ... the load 1nn are respectively connected to the n-stage load total relay n.
  • the working status of each load is counted in real time in the PLC controller.
  • the corresponding status bits in the PLC controller are 11110001, that is, the loads 111, 112, 113, 114, 118 work.
  • the loads 115, 116, and 117 do not work;
  • the corresponding status bits in the PLC controller are 11110000, that is, the loads 121, 122, 123, and 124 work, and the loads 125, 126, 127, and 128 do not work.
  • the PLC controller can monitor each load status in real time.
  • the PLC controller calculates the total real-time load capacity of the system according to the status register. Compared with the grid capacity, the load with the status bit of 1 is added to the rated power of the load registration. If the grid capacity is higher than the total real-time load of the system, the system is maintained before the abnormality. The load status, regardless of the level, all the loads are running normally, and the PLC controller turns on the relay corresponding to each level of load.
  • the PLC controller first guarantees the first-level load supply according to the priority level; if the total capacity of the first-level load is lower than the grid capacity, the next-stage load is turned on until the secondary load When the sum of the accumulated total capacity and the total capacity of the primary load is higher than the power capacity of the grid, the secondary load is traded according to the priority.
  • the PLC controller When the high-priority load is used, the PLC controller sets its corresponding status bit to 0, releasing the power supply capacity to the low-priority load, and normally accessing when the low-level load requires access.
  • the grid capacity is higher than the sum of all load capacities of the primary load.
  • the primary load includes residential basic living lighting, hospital power supply, school power supply, government power supply, secondary load including municipal lighting, household outlet power, and tertiary load including High-power load sockets use electricity....
  • the PLC controller of the invention selects Siemens S7-300, and its parameters are as follows:
  • the number of digits is 1024 points
  • Siemens S7-300 has strong control functions and strong computing power. It can not only complete general logic operations, but also complete complex trigonometric functions, exponents and PID operations. It works faster and can input and output.
  • the number of modules is also relatively large, and the types of input and output modules are also relatively large, and the processing tasks of the present invention can be completed in time and accurately.
  • the relay of the invention uses an electromagnetic relay, and the electromagnetic relay is composed of an iron core, a coil, an armature, a contact spring and the like. As long as a certain voltage is applied to both ends of the coil, a certain current flows in the coil, thereby generating an electromagnetic effect, and the armature will absorb the pulling force of the return spring against the iron core under the action of the electromagnetic force attraction, thereby driving the armature.
  • the moving contact is in contact with the stationary contact (normally open contact).
  • the electromagnetic suction force also disappears, and the armature returns to the original position in the reaction force of the spring, so that the movable contact and the original static contact (normally closed contact) are released.
  • the relay generally has two circuits, which are a low voltage control circuit and a high voltage working circuit.
  • the low voltage control circuit is controlled by a PLC controller.
  • the circuit is connected to the UPS power supply and load.
  • the electric energy intelligent distribution method of the invention can realize the hierarchical control of the power supply load of the power grid; and the invention proposes an admission and exit mechanism of each load, which can realize automatic optimization switching between loads.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

L'invention concerne un procédé intelligent de distribution d'énergie électrique, qui classe une charge côté alimentation, comprenant un premier étage de charge, un deuxième étage de charge et un nième étage de charge, chaque étage de charge étant connecté au réseau électrique par l'intermédiaire d'un relais général, et chaque étage de charge comprenant en outre de multiples charges. Une priorité de la charge est réglée de manière à adopter un mode d'alimentation électrique hiérarchique, et un contrôleur PLC est pris en tant que noyau de commande pour obtenir une situation de démarrage de charge en temps réel. L'état de travail de relais individuels est enregistré par le contrôleur PLC et les relais individuels peuvent être commandés par le contrôleur PLC. Après le démarrage d'une charge à haute priorité, un mécanisme de sortie raisonnable est mis en œuvre pour des charges à basse priorité, de façon à obtenir une distribution optimale de puissance du système. Le procédé peut exécuter la commande hiérarchique de la charge d'alimentation électrique pour le réseau électrique. Le procédé propose un mécanisme d'admission et de sortie pour chaque charge, permettant une optimisation automatique de commutation de charge.
PCT/CN2016/112837 2016-12-29 2016-12-29 Procédé intelligent de distribution d'énergie électrique WO2018119813A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/112837 WO2018119813A1 (fr) 2016-12-29 2016-12-29 Procédé intelligent de distribution d'énergie électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/112837 WO2018119813A1 (fr) 2016-12-29 2016-12-29 Procédé intelligent de distribution d'énergie électrique

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WO2018119813A1 true WO2018119813A1 (fr) 2018-07-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112350307A (zh) * 2020-10-28 2021-02-09 中国华电科工集团有限公司 区域配电网的控制方法、控制装置及计算机可读存储介质

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208593A (en) * 1978-02-13 1980-06-17 U.S. Energy Conservation Systems, Inc. Method and system of selective disconnection of loads from a power source
CN101715587A (zh) * 2007-03-23 2010-05-26 Bpl环球有限公司 需求调度和负荷管理的系统及方法
CN102437651A (zh) * 2011-12-26 2012-05-02 上海电力实业总公司 一种电力负荷需量管理系统
CN103472775A (zh) * 2013-08-23 2013-12-25 苏州工业园区安电电子有限公司 一种供电系统及供电方法
CN104037774A (zh) * 2013-03-06 2014-09-10 珠海优特电力科技股份有限公司 基于优先级的微电网内设备调控方法及系统
CN104578375A (zh) * 2015-01-04 2015-04-29 中山市马迅电器有限公司 Ups输出优先选择器
CN104917185A (zh) * 2014-03-14 2015-09-16 珠海优特电力科技股份有限公司 对照明负荷功率智能调控的方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208593A (en) * 1978-02-13 1980-06-17 U.S. Energy Conservation Systems, Inc. Method and system of selective disconnection of loads from a power source
CN101715587A (zh) * 2007-03-23 2010-05-26 Bpl环球有限公司 需求调度和负荷管理的系统及方法
CN102437651A (zh) * 2011-12-26 2012-05-02 上海电力实业总公司 一种电力负荷需量管理系统
CN104037774A (zh) * 2013-03-06 2014-09-10 珠海优特电力科技股份有限公司 基于优先级的微电网内设备调控方法及系统
CN103472775A (zh) * 2013-08-23 2013-12-25 苏州工业园区安电电子有限公司 一种供电系统及供电方法
CN104917185A (zh) * 2014-03-14 2015-09-16 珠海优特电力科技股份有限公司 对照明负荷功率智能调控的方法
CN104578375A (zh) * 2015-01-04 2015-04-29 中山市马迅电器有限公司 Ups输出优先选择器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112350307A (zh) * 2020-10-28 2021-02-09 中国华电科工集团有限公司 区域配电网的控制方法、控制装置及计算机可读存储介质

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