WO2018119822A1 - 一种负载切换系统 - Google Patents
一种负载切换系统 Download PDFInfo
- Publication number
- WO2018119822A1 WO2018119822A1 PCT/CN2016/112885 CN2016112885W WO2018119822A1 WO 2018119822 A1 WO2018119822 A1 WO 2018119822A1 CN 2016112885 W CN2016112885 W CN 2016112885W WO 2018119822 A1 WO2018119822 A1 WO 2018119822A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- load
- capacity
- plc controller
- priority
- relay
- Prior art date
Links
Images
Classifications
-
- 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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
Definitions
- the present invention relates to the field of electrical engineering, and in particular to a load switching system.
- India's per capita electricity generation in 2005 was only 639 kWh, far below the world standard by at least four times.
- Coal that emits a large amount of carbon-contaminated gas is the main fuel used by India to generate electricity, accounting for two-thirds of the total electricity generation. on.
- 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 load switching system, which solves the problem of rationally distributing electric energy in an underdeveloped area, and further solves the problem of insufficient power supply.
- a load switching system uses a PLC controller as a control core to classify system loads, including a primary load, a secondary load, and a n-level load. Each load is connected to the grid through a total relay, and each load is also loaded. Including multiple loads, by setting the priority of the load, adopting the hierarchical power supply mode, and the PLC controller obtains the load start situation in real time, records the working state of each relay through the PLC controller, and controls each relay. After the load with high priority is started, a reasonable push mechanism is adopted for the load with low priority to optimize the system power allocation.
- the PLC controller uses Siemens S7-300, and its parameters are as follows:
- the number of digits is 1024 points
- the relay uses an electromagnetic relay, and the electromagnetic relay is composed of an iron core, a coil, an armature, a contact spring, and the like;
- the working state of the system load is real-time statistically performed 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 PLC in time.
- the status register of the controller 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, maintaining the current system load status, the PLC controller turns on the relay corresponding to each load; if the grid capacity is lower than the system The real-time load total capacity, the PLC controller is allowed to open according to the priority level, the load with high priority, and the load with low priority is forbidden to access. When the load with high priority exits, According to the priority level, the load to be connected is connected to the grid.
- 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 load switching system according to the present invention.
- the invention provides a load switching system for classifying a system load, including a primary load, a secondary load, a n-level load, a priority power setting method, a hierarchical power supply mode, and a PLC controller real-time. After the load is started, the load with a high priority is started, and the load with a lower priority is properly pushed out to optimize the power allocation of the system.
- the load switching system of the present invention will be described in detail below with reference to the drawings.
- the load switching system of the present invention uses 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, It is set to 0 accordingly.
- 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, 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 load switching system 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 load switching system 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 load 115, 116, 117 does not work; there are 8 secondary loads, corresponding in the PLC controller
- the status bits are 11110000, that is, the loads 121, 122, 123, 124 work, the loads 125, 126, 127, 128 do not work, and so on, 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, and the high voltage working circuit is connected to the UPS power supply and the load.
- the load switching system of the present invention can realize hierarchical control of the power supply load of the power grid; and the present invention proposes an admission and exit mechanism of each load, which can realize automatic optimal switching between loads.
Abstract
一种负载切换系统，以PLC控制器为控制核心，对系统负载进行分级，包括一级负载、二级负载……n级负载，每级负载通过一个总继电器连接到电网，每级负载中还包括多个负载，通过对负载的优先级进行设置，采取分级供电的方式，并且PLC控制器实时获取负载启动情况，通过PLC控制器对各个继电器的工作状态进行记录，并对各个继电器进行控制，优先级高的负载启动后，对优先级低的负载进行合理的推出机制，达到系统功率分配的最优化。该负载切换系统能够实现对电网供电负载的分级控制；并且，各个负载具备准入及退出机制，能够实现负载间的自动优化切换。
Description
本发明涉及电学领域，特别涉及一种负载切换系统。
根据国际能源总署最新发布的世界能源展望报告，全球能源分布极不平均，发达国家的能源消耗远远高于发展中及落后国家。例如，作为新兴经济体的印度，印度能源建设落后经济发展甚远，政府必须加大投资电气化建设脚步，才能使无电可用的人口，从目前的4.12亿人，到2030年时降低到约6千万人。
国际能源总署报告指出，到2030年之前，印度政府需要在能源基础建设方面投资至少1.25万亿美元，而其中超过四分之三必须投注在电气化建设方面。报告指出，印度如果想要维持经济永续增长，以适时的态度吸引投资有其必要性。
印度水、电能源匮乏，供需不足，即使首善之区的首都新德里地区，也几乎是每天停电、停水多次，地方居民，但初来乍到的外邦人士常难以适应，许多外资设厂，也必须增加成本以增设水电储备设施。
据能源总署以“最佳情况”预测，印度全国到2030年的电气化建设比例，应可从2005年的62％增加到96％，届时无电可用的人口也应会降低到约6千万人。不过，报告强调说，印度惟有在经济维持高度增长的情况下，未来才能达到家家户户有电可用的境界。
印度2005年的人均发电量仅639千瓦/小时，远低于世界标准至少四倍。排放大量碳污染气体的煤，是印度用以发电的主要燃料，占总发电量三分之二以
上。在可预见的将来，煤仍将是印度继续仰赖极深的发电燃料。更糟糕的是，印度以煤为燃料的火力发电厂，是全世界效率最低的发电厂。
如何解决能源欠发达地区的电力供应，解决当地居民生活用电保障，是各国政府及国际组织亟待解决的问题。
目前，国际组织主要通过基础设施建设援助的方式解决欠发达地区的能源供给，在加强基础设施建设的同时，如何优化负载分配，也是解决电力供给不足的有效方案。
发明内容
本发明提出一种负载切换系统，解决了电力欠发达地区合理分配电能的问题，进而解决电力供给不足的问题。
本发明的技术方案是这样实现的：
一种负载切换系统，以PLC控制器为控制核心，对系统负载进行分级，包括一级负载、二级负载……n级负载，每级负载通过一个总继电器连接到电网，每级负载中还包括多个负载，通过对负载的优先级进行设置，采取分级供电的方式，并且PLC控制器实时获取负载启动情况，通过PLC控制器对各个继电器的工作状态进行记录，并对各个继电器进行控制，优先级高的负载启动后，对优先级低的负载进行合理的推出机制，达到系统功率分配的最优化；
PLC控制器选用西门子S7-300，其参数如下：
处理速度0.8～1.2ms；
存贮器2k；
数字量1024点；
模拟量128路；
网络PROFIBUS；
工业以太网；
MPI；
所述继电器选用电磁继电器，电磁继电器由铁芯、线圈、衔铁、触点簧片等组成；
在线圈两端加上一定的电压，线圈中就会流过一定的电流，从而产生电磁效应，衔铁就会在电磁力吸引的作用下克服返回弹簧的拉力吸向铁芯，从而带动衔铁的动触点与静触点吸合；
当线圈断电后，电磁的吸力也随之消失，衔铁就会在弹簧的反作用力返回原来的位置，使动触点与原来的静触点释放；这样吸合、释放，从而达到了在电路中的导通、切断的目的。
可选地，系统负载的工作状态在PLC控制器中进行实时统计，PLC控制器的状态寄存器开辟单独空间，为系统中每个负载预留相应位，系统添加新的负载，工作人员及时更新PLC控制器的状态寄存器；负载工作时，其相应位置1，负载不工作，其相应为置0。
可选地，PLC控制器根据状态寄存器核算系统实时负载总容量，若电网容量高于系统实时负载总容量，维持当前系统负载状态，PLC控制器开通各个负载对应的继电器；若电网容量低于系统实时负载总容量，PLC控制器根据优先级高低，优先级高的负载准许开通，优先级低的负载禁止接入，当优先级高的负载退出后，
根据优先级高低，将待接入的负载接入电网。
可选地，PLC控制器根据状态寄存器核算系统实时负载总容量，与电网容量相比较，将状态位为1的负载与负载登记的额定功率相加，若电网容量高于系统实时负载总容量，维持异常前系统负载状态，不分等级，全部负载正常运行，PLC控制器开通各级负载对应的继电器；
若电网容量低于系统实时负载总容量，PLC控制器根据优先级高低，首先保证一级负载供给；如果一级负载的总容量低于电网容量，则进行下一级负载开通，直到二级负载累加的总容量与一级负载总容量之和高于电网容量时，对二级负载根据优先级进行取舍；
如果二级负载状态位为1的负载与一级负载状态为1的负载累加后，仍然低于电网容量，则进行三级负载的累加，以此类推，直到高于电网容量。
可选地，当优先级高的负载使用结束，则PLC控制器置其相应的状态位为0，释放电源容量给低优先级的负载，当低级别负载要求接入时，正常接入。
本发明的有益效果是：
(1)能够实现对电网供电负载地分级控制；
(2)并且，本发明提出了各个负载的准入及退出机制，能够实现负载间的自动优化切换。
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的
附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明一种负载切换系统原理框图。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明提出了一种负载切换系统，对系统负载进行分级，包括一级负载、二级负载……n级负载，通过对负载的优先级进行设置，采取分级供电的方式，并且PLC控制器实时获取负载启动情况，优先级高的负载启动后，对优先级低的负载进行合理的推出机制，达到系统功率分配的最优化，下面结合说明书附图对本发明的负载切换系统进行详细说明。
如图1所示，本发明的负载切换系统，以PLC控制器为控制核心，通过PLC控制器对各个继电器的工作状态进行记录，并对各个继电器进行控制。
系统负载包括一级负载、二级负载……n级负载，每级负载通过一个总继电器连接到UPS电源，每级负载中还包括多个负载。
系统负载的工作状态在PLC控制器中进行实时统计，PLC控制器的状态寄存器开辟单独空间，为系统中每个负载预留相应位，系统添加新的负载，需工作人员及时更新PLC控制器的状态寄存器。负载工作时，其相应位置1，负载不工作，
其相应为置0。状态寄存器实时更新，因此，PLC控制器可以实时监控各负载状态。
PLC控制器根据状态寄存器核算系统实时负载总容量，若电网容量高于系统实时负载总容量，维持当前系统负载状态，PLC控制器开通各个负载对应的继电器；若电网容量低于系统实时负载总容量，PLC控制器根据优先级高低，优先级高的负载准许开通，优先级低的负载禁止接入，当优先级高的负载退出后，根据优先级高低，将待接入的负载接入电网。
根据上述负载准入及退出机制，本发明的负载切换系统可以实现负载的自动切换，下面结合具体实施例对本发明进行详细说明。
如图1所示，本发明的负载切换系统包括一级负载、二级负载……n级负载。
一级负载包括负载111、负载112、……负载11n，二级负载包括负载121、负载122、……负载12n，……，n级负载包括负载1n1、负载1n2、……负载1nn。
一级负载通过一个总继电器1连接到电网，负载111、负载112、……负载11n分别连接到一级负载总继电器1。
二级负载通过一个总继电器2连接到电网，负载121、负载122、……负载12n分别连接到二级负载总继电器2。
n级负载通过一个总继电器n连接到电网，负载1n1、负载1n2、……负载1nn分别连接到n级负载总继电器n。
每个负载的工作状态在PLC控制器中进行实时统计，例如，一级负载有8个，在PLC控制器中对应的状态位分别为11110001，即负载111、112、113、114、118工作，负载115、116、117不工作；二级负载有8个，在PLC控制器中对应
的状态位分别为11110000，即负载121、122、123、124工作，负载125、126、127、128不工作，以此类推，PLC控制器可以实时监控各负载状态。
PLC控制器根据状态寄存器核算系统实时负载总容量，与电网容量相比较，将状态位为1的负载与负载登记的额定功率相加，若电网容量高于系统实时负载总容量，维持异常前系统负载状态，不分等级，全部负载正常运行，PLC控制器开通各级负载对应的继电器。
若电网容量低于系统实时负载总容量，PLC控制器根据优先级高低，首先保证一级负载供给；如果一级负载的总容量低于电网容量，则进行下一级负载开通，直到二级负载累加的总容量与一级负载总容量之和高于电网容量时，对二级负载根据优先级进行取舍。
如果二级负载状态位为1的负载与一级负载状态为1的负载累加后，仍然低于电网容量，则进行三级负载的累加，以此类推，直到高于电网容量。
当优先级高的负载使用结束，则PLC控制器置其相应的状态位为0，释放电源容量给低优先级的负载，当低级别负载要求接入时，正常接入。
通常情况，电网容量高于一级负载所有负载容量总和，例如一级负载包括居民基本生活照明、医院供电、学校供电、政府供电，二级负载包括市政照明、家庭插座用电，三级负载包括大功率负载插座用电……。
本发明的PLC控制器选用西门子S7-300，其参数如下：
处理速度0.8～1.2ms；
存贮器2k；
数字量1024点；
模拟量128路；
网络PROFIBUS；
工业以太网；
MPI。
西门子S7-300具有较强的控制功能和较强的运算能力，它不仅能完成一般的逻辑运算，也能完成比较复杂的三角函数、指数和PID运算，工作速度比较快，能带的输入输出模块的数量也比较多，输入和输出模块的种类也比较多，能够及时、准确地完成本发明地处理任务。
本发明的继电器选用电磁继电器，电磁继电器由铁芯、线圈、衔铁、触点簧片等组成。只要在线圈两端加上一定的电压，线圈中就会流过一定的电流，从而产生电磁效应，衔铁就会在电磁力吸引的作用下克服返回弹簧的拉力吸向铁芯，从而带动衔铁的动触点与静触点(常开触点)吸合。当线圈断电后，电磁的吸力也随之消失，衔铁就会在弹簧的反作用力返回原来的位置，使动触点与原来的静触点(常闭触点)释放。这样吸合、释放，从而达到了在电路中的导通、切断的目的。对于继电器的“常开、常闭”触点，可以这样来区分：继电器线圈未通电时处于断开状态的静触点，称为“常开触点”；处于接通状态的静触点称为“常闭触点”。继电器一般有两股电路，为低压控制电路和高压工作电路，低压控制电路由PLC控制器控制，高压工作电路连通UPS电源及负载。
本发明的一种负载切换系统能够实现对电网供电负载地分级控制；并且，本发明提出了各个负载的准入及退出机制，能够实现负载间的自动优化切换。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明
的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (5)
- 一种负载切换系统，其特征在于，以PLC控制器为控制核心，对系统负载进行分级，包括一级负载、二级负载……n级负载，每级负载通过一个总继电器连接到电网，每级负载中还包括多个负载，通过对负载的优先级进行设置，采取分级供电的方式，并且PLC控制器实时获取负载启动情况，通过PLC控制器对各个继电器的工作状态进行记录，并对各个继电器进行控制，优先级高的负载启动后，对优先级低的负载进行合理的推出机制，达到系统功率分配的最优化；PLC控制器选用西门子S7-300，其参数如下：处理速度0.8～1.2ms；存贮器2k；数字量1024点；模拟量128路；网络PROFIBUS；工业以太网；MPI；所述继电器选用电磁继电器，电磁继电器由铁芯、线圈、衔铁、触点簧片等组成；在线圈两端加上一定的电压，线圈中就会流过一定的电流，从而产生电磁效应，衔铁就会在电磁力吸引的作用下克服返回弹簧的拉力吸向铁芯，从而带动衔铁的动触点与静触点吸合；当线圈断电后，电磁的吸力也随之消失，衔铁就会在弹簧的反作用力返回原来的位置，使动触点与原来的静触点释放；这样吸合、释放，从而达到了在电路中的导通、切断的目的。
- 如权利要求1所述的一种负载切换系统，其特征在于，系统负载的工作状态在PLC控制器中进行实时统计，PLC控制器的状态寄存器开辟单独空间，为系统中每个负载预留相应位，系统添加新的负载，工作人员及时更新PLC控制器的状态寄存器；负载工作时，其相应位置1，负载不工作，其相应为置0。
- 如权利要求2所述的一种负载切换系统，其特征在于，PLC控制器根据状态寄存器核算系统实时负载总容量，若电网容量高于系统实时负载总容量，维持当前系统负载状态，PLC控制器开通各个负载对应的继电器；若电网容量低于系统实时负载总容量，PLC控制器根据优先级高低，优先级高的负载准许开通，优先级低的负载禁止接入，当优先级高的负载退出后，根据优先级高低，将待接入的负载接入电网。
- 如权利要求3所述的一种负载切换系统，其特征在于，PLC控制器根据状态寄存器核算系统实时负载总容量，与电网容量相比较，将状态位为1的负载与负载登记的额定功率相加，若电网容量高于系统实时负载总容量，维持异常前系统负载状态，不分等级，全部负载正常运行，PLC控制器开通各级负载对应的继电器；若电网容量低于系统实时负载总容量，PLC控制器根据优先级高 低，首先保证一级负载供给；如果一级负载的总容量低于电网容量，则进行下一级负载开通，直到二级负载累加的总容量与一级负载总容量之和高于电网容量时，对二级负载根据优先级进行取舍；如果二级负载状态位为1的负载与一级负载状态为1的负载累加后，仍然低于电网容量，则进行三级负载的累加，以此类推，直到高于电网容量。
- 如权利要求4所述的一种负载切换系统，其特征在于，当优先级高的负载使用结束，则PLC控制器置其相应的状态位为0，释放电源容量给低优先级的负载，当低级别负载要求接入时，正常接入。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/112885 WO2018119822A1 (zh) | 2016-12-29 | 2016-12-29 | 一种负载切换系统 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2016/112885 WO2018119822A1 (zh) | 2016-12-29 | 2016-12-29 | 一种负载切换系统 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018119822A1 true WO2018119822A1 (zh) | 2018-07-05 |
Family
ID=62710230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2016/112885 WO2018119822A1 (zh) | 2016-12-29 | 2016-12-29 | 一种负载切换系统 |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2018119822A1 (zh) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN201527936U (zh) * | 2009-10-14 | 2010-07-14 | 明光市三友电子有限公司 | 具有u型槽的电磁继电器 |
| 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 |
| CN103065871A (zh) * | 2013-01-09 | 2013-04-24 | 深圳市元征软件开发有限公司 | 一种降低电磁继电器功耗的实现电路 |
| CN104283308A (zh) * | 2013-07-10 | 2015-01-14 | 北京中电建投微电网科技有限公司 | 微电网智能中央策略控制系统 |
| CN105116809A (zh) * | 2015-09-10 | 2015-12-02 | 国电南京自动化股份有限公司 | 一种用户可自定义的智能微电网负荷控制系统及方法 |
-
2016
- 2016-12-29 WO PCT/CN2016/112885 patent/WO2018119822A1/zh active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN201527936U (zh) * | 2009-10-14 | 2010-07-14 | 明光市三友电子有限公司 | 具有u型槽的电磁继电器 |
| 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 |
| CN103065871A (zh) * | 2013-01-09 | 2013-04-24 | 深圳市元征软件开发有限公司 | 一种降低电磁继电器功耗的实现电路 |
| CN104283308A (zh) * | 2013-07-10 | 2015-01-14 | 北京中电建投微电网科技有限公司 | 微电网智能中央策略控制系统 |
| CN105116809A (zh) * | 2015-09-10 | 2015-12-02 | 国电南京自动化股份有限公司 | 一种用户可自定义的智能微电网负荷控制系统及方法 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9891645B2 (en) | Progressive optimization dispatching method of smart distribution system | |
| Alagoz et al. | A user-mode distributed energy management architecture for smart grid applications | |
| CN109948868A (zh) | 高渗透率分布式可再生能源发电集群优化规划方法 | |
| CN106096751A (zh) | 考虑新能源接入与需求侧响应参与短期发电计划安排及备用优化配置方法 | |
| CN207053181U (zh) | 一种包含微网群的主动配电网源‑网‑荷协调控制系统 | |
| Zhao et al. | Potential of the commercial sector to participate in the demand side management program | |
| Ravindra et al. | Microgrids: A Value-Based Paradigm: The need for the redefinition of microgrids | |
| WO2018119813A1 (zh) | 一种电能智能分配方法 | |
| WO2018119822A1 (zh) | 一种负载切换系统 | |
| Liao et al. | Load transfer capability analysis considering interconnection of distributed generation and energy storage system | |
| Babayomi et al. | Energy efficiency of sustainable renewable microgrids for off-grid electrification | |
| CN108428053A (zh) | 一种基于需求侧管理的主动配电网运行风险评估方法 | |
| Li | From Strong to Smart: the Chinese Smart Grid and its relation with the Globe | |
| Song et al. | Virtual power plant implementation scheme in Shenzhen city | |
| US10243363B2 (en) | Systems and methods for local demand optimization | |
| Badar et al. | Economic analysis and control strategy of residential prosumer | |
| Li et al. | Energy management of CCHP microgrid considering demand-side management | |
| V. Selivanov et al. | Analysis of development trends of power industry market for power consumption purposes | |
| Zulfiqar et al. | Smart grid implementation and development in Pakistan | |
| Vogt et al. | Prediction of residual power peaks in industrial microgrids using artificial neural networks | |
| Mandelli et al. | The role of storage in emerging country scenarios | |
| Xiang et al. | An evaluation of domestic electric water heaters for frequency control | |
| Wang et al. | Multi-agent interaction of source, load and storage to realize peak shaving and valley filling under the guidance of the market mechanism | |
| Rahmanov et al. | AC and DC combined microgrid, modeling and operation | |
| WO2018119809A1 (zh) | 一种ups系统智能管理方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16925762 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 16925762 Country of ref document: EP Kind code of ref document: A1 |