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KR-102961665-B1 - Sensor-based energy management enclosure and distributed energy resource management based on sensor data

KR102961665B1KR 102961665 B1KR102961665 B1KR 102961665B1KR-102961665-B1

Abstract

The power system within a consumer premises includes circuit breakers for supplying power to electrical circuits and current sensors mounted in close proximity to the connections of the circuit breakers. The current sensors generate data used by a controller to calculate the current draw for the circuits supplied by the circuit breakers. Based on the current draw information, the controller can determine how much real and reactive power is being drawn by individual circuits. Using this information, the controller can adjust the operation to trigger power converters and change the operating quadrant of the current vector.

Inventors

  • 마탄, 스테판
  • 호튼, 프레드 씨.

Assignees

  • 어패런트 랩스, 엘엘씨

Dates

Publication Date
20260508
Application Date
20191217
Priority Date
20181217

Claims (15)

  1. As a device for power monitoring, Circuit breaker enclosure; A conductive plate mounted within the above-mentioned circuit breaker enclosure - the conductive plate has a plurality of contacts for connecting to a grid-coupled power supply including a contact that accommodates a circuit breaker providing power to an electrical circuit - ; An insulating layer mounted on the conductive plate above; and A device comprising an integrated circuit (I/C) sensor mounted on an insulating layer in close proximity to a contact to generate current sensing data for the electrical circuit when the circuit breaker is connected, including data indicating real and reactive power withdrawal of the electrical circuit, wherein the I/C sensor is mounted on the conductive plate and below the circuit breaker.
  2. In claim 1, the circuit breaker includes a first circuit breaker, the electric circuit includes a first electric circuit, the I/C sensor includes a first I/C sensor, the current sensing data includes first current sensing data, and the device, A second circuit breaker coupled to the contact to provide power to the second electrical circuit when connected; and A device further comprising a second I/C sensor mounted in close proximity to the contact to generate second current sensing data for the second electric circuit when connected, including data indicating real and reactive power withdrawal of the second electric circuit.
  3. In paragraph 2, A device further comprising a controller that receives the first current sensing data and the second current sensing data, and calculates real and reactive power current draws for the first and second electrical circuits, respectively.
  4. In paragraph 3, the device, wherein the controller calculates the real and reactive power current draw for the second electrical circuit as the difference between the first current sensing data and the second current sensing data.
  5. In paragraph 3, the device calculates the real and reactive power current draws for the first electric circuit based on the first current sensing data, wherein the controller adjusts the calculations to normalize interference from the second electric circuit as calculated with respect to the second current sensing data.
  6. In paragraph 3, the controller is a device that calculates the combined real and reactive power current draws for the first and second electrical circuits.
  7. A device according to paragraph 3, wherein the controller transmits a command to a power converter coupled to the device, causing the power converter to adjust the ratio of real and reactive power provided to the first electric circuit.
  8. In claim 1, the contact includes a first contact, the electric supply unit includes a first electric supply unit, the circuit breaker includes a first circuit breaker, the electric circuit includes a first electric circuit, the I/C sensor includes a first I/C sensor, the current sensing data includes a first current sensing data, and the device, A second contact for a second electric supply unit having a different phase with respect to the first electric supply unit for providing power to a second electric circuit when a second circuit breaker is connected; A second circuit breaker coupled to the second contact to provide power to the second electrical circuit when connected; and A device further comprising a second I/C sensor mounted in close proximity to the contact to generate second current sensing data for the second electric circuit when connected, including data indicating real and reactive power withdrawal of the second electric circuit.
  9. In paragraph 8, A device further comprising a controller that receives the first current sensing data and the second current sensing data, and calculates real and reactive power current draws for the first and second electrical circuits, respectively.
  10. In claim 9, the device calculates the real and reactive power current draw for the first electric circuit based on the first current sensing data, wherein the controller adjusts the calculations to normalize interference from the second electric circuit as calculated with respect to the second current sensing data.
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Description

Sensor-based energy management enclosure and distributed energy resource management based on sensor data preference This application is based on U.S. Provisional Application No. 62/780,879 filed on December 17, 2018, and claims the benefit of its priority. Technology field The descriptions in this specification generally relate to electrical power grids, and more detailed descriptions relate to distributed management in power grids. There has been an increase in so-called "smart meter" products introduced to provide increased control over consumer premises or customer locations. Smart meters are intended to provide information regarding power usage within consumer premises. The traditional flow of information regarding consumer premises involves using power and receiving a bill at the end of the month indicating which power was consumed. Smart meters propose providing information through regular monitoring. However, smart meters are still grid meters, which means that control still originates from the perspective of the grid or grid management, such as utilities, before the meter. Any information collected by smart meters leads to control by the grid, which ultimately attempts to control the consumer premises based on how the utility views power consumption from the grid at the point of entry into the consumer premises. Even when the energy generation capacity of the consumer premises is considered by the smart meter, the smart meter still measures and makes all decisions regarding how to control power consumption or power generation based on the grid-side perspective of Common Coupled Power (PCC). Consumer premises may or may not include solar installations or other local power generation. Traditional solar attempts to meet customer needs, but it may do so at the expense of electrical grid stability. Traditional solar provides only real power. Attempts to provide reactive power with solar typically result in inefficient power usage by altering the reactive power loading on the consumer premises. Whether the reactive loading is changed to be more inductive or more capacitive, the end result in either case is that the consumer premises increase reactive power consumption to improve real power transmission. Net metering provides financial incentives to customers for locally generated surplus power, which refers to power not used by the customer. However, net metering puts customers at a disadvantage with utilities or service providers, given that customers or prosumers may be required to pay for power that is not needed or is the wrong type of power that could disrupt grid stability. Furthermore, customers' desire to reduce their dependence on grid operators stimulates more solar deployments. However, installing more solar on the grid network can increase grid instability due to the generation of excess real power. In addition to the generation of excess real power, the grid is also required to increase reactive power generation to stabilize the grid by providing grid support. Reactive power generation from central grid locations causes increased inefficiencies on the grid, pushing reactive power support miles down below the power lines. The penetration of solar deployments beyond a certain level can lead to "solar saturation," where the amount of solar resources on the grid can generate excess real power beyond the capacity of utility operators to effectively handle the excess solar power or provide adequate reactive power support. The following description includes a discussion of the drawings having examples given as examples of implementation. The drawings should be understood as examples, not as limitations. As used herein, references to one or more examples should be understood as describing specific features, structures, or characteristics included in at least one embodiment of the invention. Phrases such as “in one example” or “in an alternative example” appearing herein provide examples of embodiments of the invention and do not necessarily refer to all of the same embodiment. However, they are also not necessarily mutually exclusive. Figure 1 is a block diagram of an example of a circuit breaker box or enclosure for an intelligent grid operating system. Figure 2 shows an example of a circuit breaker for an enclosure for an intelligent grid operating system. Figure 3 shows an example of current sensors mounted below the circuit breakers on the charging plate of a circuit breaker enclosure. Figure 4 shows an example of current sensors within a circuit breaker enclosure for an intelligent grid operating system. Figure 5 is a circuit representation of an example of a circuit breaker circuit for an enclosure for an intelligent grid operating system. Figure 6 is a block diagram of an example of a system having internal current sensors. FIG. 7a is a block diagram of an example of an enclosure having multiple meters. Figure 7b shows an example of a 4-upper limit meter. FIG. 8 is a block diagram of an exampl