Information processing device, information processing method, and information processing program

Abstract

To accurately estimate active power and the like of loads of consumers as well as active power of a power generating installation.SOLUTION: There is provided an information processing device 2 that estimates, in a prescribed section of a power system 1, the state of the power system including a plurality of any of a consumer A having a load, a consumer B having a power generating installation of a surplus purchase contract target, and a consumer C having a power generating installation of a total amount purchase contract target, including: a first calculation unit that calculates active power and reactive power; a second calculation unit that, based on classification information indicating to which of the consumers A to C each of consumers corresponds and a measured value of a watt-hour meter of each of the consumers, calculates active power of any of the respective consumers; and a first estimation unit that, based on a first ratio of active power of the consumer A and the consumer B, a second ratio of active power of the power generating installations of the consumer B and the consumer C, a power factor of the power generating installations, active power and reactive power, and active power of any of the respective consumers, estimates a state including active power and reactive power of a load in the prescribed section and active power of the power generating installations in the prescribed section.SELECTED DRAWING: Figure 1

Claims

1. An information processing device for estimating the state of a power system in a predetermined section of the power system, which includes multiple consumers that are classified as either a first consumer with a load, a second consumer with power generation equipment subject to a surplus purchase agreement, or a third consumer with the same power generation equipment subject to a full purchase agreement, A first calculation unit calculates the active power and reactive power in the predetermined section based on measurements from sensors in the distribution lines of the power system, A second calculation unit calculates the active power of at least one of the first to third consumers based on classification information indicating which of the first to third consumers each of the plurality of consumers belongs to, and the measured values ​​of the electricity meters of the plurality of consumers. A first estimation unit estimates the state including the active power and reactive power of the loads included in the predetermined section and the active power of the power generation equipment included in the predetermined section, based on the first ratio of active power in the loads of the first and second consumers, the second ratio of active power in the power generation equipment of the second and third consumers, the power factor of the power generation equipment, the active power and reactive power in the predetermined section, and the active power of at least one of the first to third consumers. An information processing device equipped with the following features.

2. An information processing apparatus according to claim 1, The second calculation unit calculates the active power of at least two of the first to third consumers, The first estimation unit estimates the state based on the first ratio, the second ratio, the power factor, the active power and reactive power in the predetermined section, and the active power of at least two of the first to third consumers. Information processing device.

3. An information processing apparatus according to claim 2, The second calculation unit calculates the active power of the first to third consumers, The first estimation unit estimates the state based on the first ratio, the second ratio, the power factor, the active power and reactive power in the predetermined section, and the active power of the first to third consumers. Information processing device.

4. An information processing apparatus according to claim 1, The first estimation unit is, The first difference between the active power in the predetermined section calculated based on the measurement value from the sensor and the active power in the predetermined section calculated based on the state, The reactive power in the predetermined section calculated based on the measurement value from the sensor, and the second difference in reactive power in the predetermined section calculated based on the power factor and the state, A first objective function is set based on the active power of at least one of the first to third consumers calculated based on the measurement values ​​of the electricity meter, and a third difference of the active power of at least one of the consumers calculated based on the first ratio, the second ratio, and the state. The state is estimated by minimizing the first objective function when the state is the first decision variable. Information processing device.

5. An information processing apparatus according to any one of claims 1 to 4, The first ratio is a first value representing the proportion of the active power of the load of the first customer's load to the total active power of the load, and a second value representing the proportion of the active power of the load of the second customer. The second ratio is a third value representing the proportion of the active power of the second customer's power generation facility to the active power of the power generation facility, and a fourth value representing the proportion of the active power of the third customer's power generation facility. The system further comprises a second estimation unit that estimates the first ratio and the second ratio, The second estimation unit described above is: The fourth difference between the measured values ​​of the active power of the load included in the predetermined section and the active power of the load of the first consumer divided by the first value, A second objective function is set based on the difference between the measured value of the active power of the power generation equipment included in the predetermined section and the value obtained by dividing the measured value of the active power of the power generation equipment of the third consumer by the fourth value. The first ratio and the second ratio are estimated by minimizing the second objective function, with the first ratio, the second ratio, the active power of the load included in the predetermined section, and the active power of the power generation equipment included in the predetermined section as the second decision variables. Information processing device.

6. An information processing device according to claim 5, The second estimation unit described above is: The first ratio and the second ratio, which are time-dependent, are used as the second determination variables. Information processing device.

7. Information processing device, An information processing method for estimating the state of a power system in a predetermined section of the power system, which includes multiple consumers that are classified as either a first consumer with a load, a second consumer with power generation equipment subject to a surplus purchase agreement, or a third consumer with the same power generation equipment subject to a full purchase agreement, The steps include: calculating the active power and reactive power in the predetermined section based on measurements from sensors in the distribution lines of the power system; A step of calculating the active power of at least one of the first to third consumers based on classification information indicating which of the first to third consumers each of the plurality of consumers belongs to, and the measured values ​​of the electricity meters of the plurality of consumers. A step of estimating the state including the active power and reactive power of the loads included in the predetermined section and the active power of the power generation equipment included in the predetermined section, based on: a first ratio of the active power of the loads included in the predetermined section, the loads of the first and second consumers, a second ratio of the active power of the power generation equipment included in the predetermined section, the power factor of the power generation equipment, the active power and reactive power in the predetermined section, and the active power of at least one of the first to third consumers; An information processing method that performs processing including [a specific element].

8. An information processing program for estimating the state of a power system in a predetermined section of the power system, which includes multiple consumers that are classified as either a first consumer with a load, a second consumer with power generation equipment subject to a surplus purchase agreement, or a third consumer with the same power generation equipment subject to a full purchase agreement, On the computer, A first calculation unit calculates the active power and reactive power in the predetermined section based on measurements from sensors in the distribution lines of the power system, A second calculation unit calculates the active power of at least one of the first to third consumers based on classification information indicating which of the first to third consumers each of the plurality of consumers belongs to, and the measured values ​​of the electricity meters of the plurality of consumers. A first estimation unit estimates the state including the active power and reactive power of the loads included in the predetermined section and the active power of the power generation equipment included in the predetermined section, based on the first ratio of active power in the loads of the first and second consumers, the second ratio of active power in the power generation equipment of the second and third consumers, the power factor of the power generation equipment, the active power and reactive power in the predetermined section, and the active power of at least one of the first to third consumers. An information processing program that makes this possible.

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