JP2009071973A - System and method for monitoring exhaust co2 - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To precisely calculate an actual CO<SB>2</SB>exhaust coefficient and the like, to reduce power consumption and to promote power load levelling. <P>SOLUTION: A control command signal for remotely controlling an operation of a power generation equipment is received from a feeding control system (12) of a central feeding command center (2) which remotely controls the operation of a plurality of power generation equipment based on the predicted power consumption. An operation state of the respective power generation equipment is obtained from the received control command signal. The actual CO<SB>2</SB>exhaust amount of each power generation equipment is obtained from a product of the CO<SB>2</SB>exhaust coefficient and generated power amount of each power generation equipment in the operation state. The actual CO<SB>2</SB>total exhaust coefficient is obtained from the actual CO<SB>2</SB>total exhaust amount and the total generated power amount of all power generation equipment. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a monitoring method of the monitoring system and CO ₂ emissions of CO ₂ emissions, and more particularly, the emission factor for emissions and CO ₂ in uniform manner CO ₂ from simply generated power as in the prior art Rather than obtaining the actual CO ₂ emissions and actual emission factors by grasping the operating status of each power generation facility, the difference between daytime and nighttime power consumption is calculated. the reduces about monitoring method of the monitoring system and the discharge of CO ₂ emissions CO ₂ to facilitate the leveling of power load.

  In general, the demand for electric power tends to decrease particularly during the summer, while it decreases during spring and autumn, due to changes in the operating conditions of air conditioners. In this way, in order to supply power appropriately according to the power demand that fluctuates depending on the season and day and night, the electric power company can remotely control the operation of multiple power generation facilities and adjust the operation status of the power plant. A place is established.

  This central power supply command center is equipped with a power supply control system. The power supply control system is based on past power demand data, current power usage trends, weather forecasts, etc. After that, the power consumption amount is predicted after 6 hours. The power supply control system remotely controls the operation of a plurality of power generation facilities such as an oil thermal power plant, a gas thermal power plant, a coal thermal power plant, a hydroelectric power plant, and a nuclear power plant based on the predicted power consumption. Monitor the driving situation.

Fig. 5 is a graph showing the fluctuations in summer power demand (vertical axis: total power consumption, horizontal axis: time) in the region where the applicant supplies power, and the power generation amount of each power generation facility with respect to the total power generation amount. Indicated.
As can be seen from this graph, the amount of power generated by nuclear power generation and coal-fired power generation has hardly changed throughout the day. This is achieved by adjusting the amount of power generated by gas-fired power generation and the amount of power generated by hydroelectric power generation. This is because it is difficult for nuclear power generation and the like to change its output in a short time, while oil-fired power generation can easily and quickly change its output to follow the change in power demand. . Petroleum-fired power plants will be fully operational during summer daytime to meet peak power demand, while operations are often stopped outside of summer daytime.

Maintaining such a temporary oil-fired power plant contributes to increased power generation costs. Further, since oil-fired power generation is greater influence the CO ₂ emission coefficient (CO ₂ emissions per 1 kWh) has on the larger environment, utilities operation and use of the oil-fired power plants by push leveling power load We are striving to reduce as much as possible.

In order to promote the leveling of power load, electric power companies set the nighttime power at low cost and call on consumers to use the nighttime power. We are promoting the practical application of a system to make up for surplus power. For example, in the “power load leveling system” of Patent Document 1, the power storage device is charged when the power system is under low load, and the power storage device is discharged when the power system is under high load. Trying to achieve. Currently, such a CO ₂ monitoring system is being studied on the assumption that it is applied to large consumers.
JP 2006-50763 A

Compared with nuclear power generation and coal-fired power generation, oil-fired power generation to respond to fluctuations in power demand has a higher carbon dioxide (CO ₂ ) emission rate (CO ₂ emission coefficient) than the amount of generated power. It is known that the CO ₂ emission rate increases at times other than during steady operation, such as when starting up.

However, the calculation of the CO ₂ emission coefficient so far has been performed by simply dividing the total amount of CO ₂ generated (kg) in all the power generation facilities in the year by the total amount of generated power (kWh) in the year. In other words, until now, CO ₂ emissions have been calculated based solely on power consumption regardless of daytime or nighttime, and the calculated CO ₂ emissions and CO ₂ emission factors are the actual CO ₂ emissions and CO ₂ emissions. ₂ It was different from the emission factor.

Currently, electric power companies are calling on consumers to further cooperate in reducing power consumption, leveling power load by shifting the time of power usage, and reducing CO ₂ emissions. Consumers tend to cooperate with the recent increase in environmental awareness. Here, the consumer is also want to know whether he was the CO ₂ discharged much (to reduce how much CO _2), the other hand the power company is honest and emissions and the reduction of accurately CO ₂ Responsible to answer.
However, as described above, the calculation of emissions and reductions of current CO ₂ is because it is performed based on different CO ₂ emission factor (average value) of the actual CO ₂ emission factor, accurate information The actual situation was that it could not be provided to consumers.

The present invention was devised in view of the present situation, and can accurately calculate a CO ₂ emission coefficient that changes from moment to moment depending on the type of each power plant and its operating condition, and is sincere to customers. Exhaust CO ₂ monitoring system and emissions to provide accurate information on CO ₂ reduction, and to contribute to further reducing power usage and promoting power load leveling by shifting power usage time and to provide a method of monitoring CO _2.

In order to solve the above-mentioned problems, the present invention is based on the prediction of power consumption, and remotely operates a plurality of power generation facilities of an oil thermal power plant, a gas thermal power plant, a coal thermal power plant, a hydroelectric power plant, and a nuclear power plant. An emission CO ₂ monitoring system connected to a power supply control system of a central power supply command center that performs control, wherein the power supply control system receives a control command signal for remotely controlling the operation of the power generation facility; Analyzing the control command signal received by the communication unit to obtain the operation state of each power generation facility, and the CO ₂ emission factor database storing the relationship between the operation state of each power generation facility and the CO ₂ emission factor as data When we extract the CO ₂ emission factor of each power generation equipment in the operating state of the power plant which has been determined by the analysis unit from the CO ₂ emission factor database, and CO ₂ emission factor of each power plant Monitoring system discharge CO _2, characterized in that with an arithmetic unit for determining the actual total CO ₂ emission factor from the actual CO ₂ emissions and total which the total generated power amount of each power plant from denden competence, I will provide a.

Here, the communication unit of the monitoring system for exhausted CO ₂ is connected to a watt hour meter that measures the amount of power used in a customer's house or the like, thereby extracting data on the amount of power used. It is preferable to calculate the actual CO ₂ emission amount generated by each consumer from the CO ₂ total emission coefficient and the extracted power consumption.

In addition, the CO ₂ emission monitoring method of the present invention is based on the prediction of electric power consumption, and a central power supply command for performing remote control of the operation of a plurality of power generation facilities such as an oil thermal power plant, a gas thermal power plant, and a coal thermal power plant. The control command signal for remotely controlling the operation of the power generation facility is received from the power supply control system at the station, the operation state of each power generation facility is obtained from the received control command signal, and the CO ₂ emission of each power generation facility in the operation state Calculate the actual CO ₂ emissions of each power generation facility from the product of the coefficient and the amount of generated power, and sum the actual CO ₂ emissions from all the power generation facilities (including hydropower and nuclear power that emits little CO ₂ ) It is characterized in that an actual CO ₂ total emission coefficient is obtained from the total amount of generated power.

Here, it is also preferable that the actual CO ₂ emissions of each power generation facility, the total of actual CO ₂ emissions from all the power generation facilities and / or the actual CO ₂ total emission coefficient can be viewed on the homepage. .

Furthermore, it is also preferable to call on the homepage to refrain from using electricity when the actual CO ₂ total emission coefficient exceeds a predetermined reference value.

In the exhaust CO ₂ monitoring system and the exhaust CO ₂ monitoring method according to the present invention, first, a hydroelectric power plant that emits little CO ₂ from a control command signal for the power supply control system to remotely control the operation of each power generation facility, nuclear power generation The operation state of each power generation facility including the power station is obtained, and the actual CO ₂ emission amount of each power generation facility is calculated from the product of the actual CO ₂ emission coefficient and the power generation amount according to the operation state of the power generation facility. the by determining the actual total CO ₂ emission factor based on the actual total CO ₂ emissions ratio of hydro and nuclear in the total power generation amount changes every moment due to change as shown in FIG. 5, for example The coefficient can be calculated accurately.

Here, each consumer was generated by connecting a watt-hour meter installed at the customer's home etc. and a monitoring system, and obtaining the data on the amount of power used per hour and the actual total CO ₂ emission factor at that time ( It is possible to obtain the actual CO ₂ emission amount (or reduced).

Moreover, if the electric power company can browse the actual total CO ₂ emission coefficient etc. on the homepage, the electric power company can honestly provide correct information to consumers.
Furthermore, if the actual total CO ₂ emission factor exceeds a predetermined standard value, if the customer is asked to refrain from using electricity, it will promote power load leveling with the cooperation of environmentally conscious consumers. be able to.

First, the monitoring system for exhaust CO _{2 according to} the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram showing an overall image of a monitoring system for exhausted CO ₂ according to the present invention. FIG. 2 is a block diagram for explaining the configuration of the monitoring system server of the monitoring system for exhausted CO ₂ .

The monitoring system server 11 that forms the core of the monitoring system 10 for discharged CO ₂ is a computer server that executes various applications, and is connected to the power supply control system 12 of the central power supply command station 2 through a communication line 32. The communication line 32 may be anything as long as it connects the monitoring system server 11 and the power supply control system 12, but here, a dedicated line that directly connects the two is used. The monitoring system server 11 is always connected to the Internet communication network.

  The power supply control system 12 of the central power supply command center 2 predicts, for example, the power usage (power demand) after one hour from the weather (forecast), etc., the total power usage statistics and the total of the current power usage, This is a computer system that performs remote control of operation of a plurality of power generation facilities such as an oil thermal power plant, a gas thermal power plant, and a coal thermal power plant based on this prediction. The remote control of the power generation equipment by this power supply control system 12 is essentially controlling the operation of oil-fired power plants (additionally gas-fired power plants and hydroelectric power plants), while other power generation facilities It monitors driving. As described above, the amount of power generated by nuclear power generation and coal-fired power generation hardly changes throughout the day, and the amount of power generated by oil-fired power generation (incidentally gas-fired power generation) This is because the power consumption is adjusted by adjusting the power generation amount of power generation and the power generation amount of hydropower generation).

The monitoring system server 11 shown in FIG. 2 includes a communication unit 14 connected to the power supply control system 12 and the Internet communication network, an analysis unit 16 connected to the communication unit 14, and CO ₂ emission connected to the analysis unit 16. A coefficient database 18 and a calculation unit 22 connected to the analysis unit 16 and performing predetermined calculation processing by executing an application are included.

  The communication unit 14 of the monitoring system server 11 is connected to the power supply control system 12 of the central power supply command station 2, so that the power supply control system 12 transmits a control command signal for remotely controlling the operation of each power generation facility to the communication line 32. Through (exactly receiving a control command signal transmitted from the power supply control system 12). In addition, the communication unit 14 also receives data on the current power generation amount in each power generation facility from the power supply control system 12.

The analysis unit 16 connected to the communication unit 14 analyzes the control command signal extracted by the communication unit 14 so that the current (or near future) operating state of each power generation facility (increase / decrease in output, magnitude of output). Is a device for obtaining The analysis unit 16 is connected to the CO ₂ emission coefficient database 18.

The CO ₂ emission coefficient database 18 stores the relationship between the operating state of each power generation facility and the CO ₂ emission coefficient as data. Therefore, the actual CO ₂ emission coefficient (the amount of CO ₂ emitted when generating 1 kwh) of each power generation facility can be determined from the operating state of each power generation facility determined by the analysis unit 16.

Further calculation unit 22 of the monitoring system server 11 determines the actual total CO ₂ emission factor by executing the application. That is, the calculation unit 22 extracts the CO ₂ emission coefficient of each power generation facility in the operating state of each power generation facility obtained by the analysis unit 16 from the CO ₂ emission coefficient database 18, and the CO ₂ emission coefficient and generated power of each power generation facility. This is an apparatus for determining an actual total CO ₂ emission coefficient from the actual total CO ₂ emission amount of each power generation facility and the total generated power amount from the amount.
The total CO ₂ emission factor is the total CO ₂ emission (kg) generated by all power generation facilities controlled by the power supply control system 12 of the central power supply command center 2 divided by the total amount of generated power (kWh). Value. In other words, the conventional CO ₂ emission factor is calculated by simply dividing the annual CO ₂ emission generated by the power generation facility by the annual power generation amount, and changes from moment to moment depending on the operating state of the power generation facility. The actual CO ₂ emission coefficient (≈power generation efficiency) was liberated, but in the present invention, the hydropower that hardly emits CO ₂ from the relationship between the operating state of the power generation equipment and the actual CO ₂ emission coefficient at that time, The actual total CO ₂ emission coefficient in which the ratio of nuclear power generation facilities changes from moment to moment is calculated, and the actual total CO ₂ emission amount is calculated.

The actual total CO ₂ emission coefficient (and the actual total CO ₂ emission amount) obtained as described above is displayed on the homepage of the electric power company by the server computer 33 of the electric power company that is always connected to the Internet communication network. Published on Here, it is preferable that the monitoring system 10 calls a consumer to refrain from using electricity when the actual CO ₂ emission coefficient exceeds a predetermined reference value.

The exhaust CO ₂ monitoring method by the exhaust CO ₂ monitoring system 10 is shown in a flow chart in FIG.
First, the communication unit 14 of the emission CO ₂ monitoring system 10 receives a control command signal from the power supply control system 12 (S1), and the analysis unit 16 analyzes the control command signal to obtain the operating state of each power generation facility. (S2). The analysis unit 16 extracts the CO ₂ emission coefficient in the operating state of the power plant from the CO ₂ emission factor database 18 connected (S3). The arithmetic unit 22 of the monitoring system 10 executes an application, the actual CO ₂ emission factor and the actual total CO ₂ emission factor and actual total CO ₂ emissions from the product in the generated power amount of each power generation plant calculated Is calculated (S4). Then, the calculated actual CO ₂ total emission coefficient and the actual total CO ₂ emission amount are disclosed on the power company's HP by the power company's server computer (S5).

According to the exhaust CO ₂ monitoring system 10 and the exhaust CO ₂ monitoring method of the present invention described above, the operation state of each power generation facility is obtained based on the control command signal of the power supply control system 12. Changes in the actual CO ₂ emission coefficient and CO ₂ emission amount of each power generation facility in the state, and changes in the actual CO ₂ total emission coefficient and CO ₂ total emission amount of all the power generation facilities can be known by time.
Here, it is possible to provide sincere and accurate information to consumers by publishing the obtained CO ₂ total emission coefficient that changes every moment on the homepage of the electric power company.

FIG. 4 is a conceptual diagram showing the overall image of the monitoring system for exhausted CO ₂ of this embodiment.
In the emission CO ₂ monitoring system 10 of this embodiment, a communication device 26 connected to the Internet communication network is provided in a watt-hour meter 24 that measures the amount of power used in a customer's house 4 or the like. In addition, the monitoring system server 11 connected to the Internet communication network is further provided with a totaling unit 28 that processes data of power consumption in the customer's house 4 and the like measured by the watt-hour meter 24 and transmitted from the communication device 26. ing. Further the monitoring system server 11 records the power usage and CO ₂ emissions of each consumer, also is provided with a past power consumption and CO ₂ emissions storage unit 34 which records of each consumer (See FIG. 2).

Drawing a flow monitoring method for discharging CO ₂ by the monitoring system 10 of the CO ₂ emissions of this embodiment will be omitted as follows.
The communication unit 14 of the monitoring system server 10 is always connected to the communication device 26 of the watt-hour meter 24 via the Internet communication network, and extracts data on the power consumption of the customer's house from the watt-hour meter 24 in real time. Record. Then, the calculation unit 22 connected to the communication unit 14 determines the actual CO ₂ emission amount generated by the consumer from the power consumption data and the actual total CO ₂ emission coefficient at that time obtained in the first embodiment. Is calculated. In other words, the CO ₂ emission amount at each time is obtained from the product of the actual total CO ₂ emission coefficient at a certain time and the power consumption at that time, and the total amount of the CO ₂ emission for one day is generated. the actual amount of CO ₂ that was allowed to (CO ₂ emissions) can'll calculated.

The storage unit 34 of the emission CO ₂ monitoring system 10 records the actual daily amount of CO ₂ generated by each consumer, and totals the amount of actual CO ₂ emission for each consumer for one month. Find the amount. The past is compared with CO ₂ emissions (up or the previous month, etc.) to determine the amount of CO ₂ which would have reduced the consumer.

According to the monitoring system of exhaust CO ₂ of the present embodiment described above, the actual amount of CO ₂ generated by each consumer can be calculated. If the calculated CO ₂ reduction amount is reported to the consumer by describing it on a meter reading slip or the like, the responsibility for answering the generation amount or reduction amount of CO ₂ to the consumer in a sincere and accurate manner can be fulfilled. The do it performs like discounts and gift presentation electricity prices in accordance with the contribution for the CO ₂ reduction (CO ₂ reduction), power load leveling by the shift of the reduction and power usage time of the power consumption Can be promoted.

It should be noted that the configuration of the present invention is not limited to that described above, and can be appropriately changed without departing from the spirit of the invention. For example, it is possible to notify consumers of the amount of CO ₂ generated or reduced daily using means such as e-mail.

It is the conceptual diagram which showed the whole monitoring system of discharge | emission CO2 by Example 1. FIG. It is the block diagram which showed the structure of the management server. Is a flow diagram summarizing the method for monitoring CO ₂ emissions according to Example 1. It is the conceptual diagram which showed the whole monitoring system of discharge | emission CO2 by Example 2. FIG. It is the graph which showed the fluctuation | variation of electric power demand, and the electric power generation amount of each power generation equipment with respect to the total electric power generation amount.

Explanation of symbols

2 central power supply command office 4 demand house 10 CO ₂ emissions monitoring system 11 monitors the system server 12 power supply control system 14 communication unit 16 analyzing unit 18 CO ₂ emission factor database 22 calculating unit 24 power meter 26 communication device 28 totaling unit 32 Communication Line 33 Server computer of electric power company

Claims (5)

Central power supply command center that remotely controls the operation of multiple power generation facilities such as oil-fired power plants, gas-fired power plants, coal-fired power plants, hydroelectric power plants, and nuclear power plants based on the prediction of power consumption (2) A discharge CO ₂ monitoring system (10) connected to the power supply control system (12) of
A communication unit (14) for receiving a control command signal for remotely controlling the operation of each power generation facility by the power supply control system;
An analysis unit (16) for obtaining an operating state of each power generation facility by analyzing a control command signal received by the communication unit;
A CO ₂ emission factor database (18) which stores the relationship between the operating state of each power generation facility and the CO ₂ emission factor as data;
The CO ₂ emission coefficient of each power generation facility in the operating state of each power generation facility determined by the analysis unit is extracted from the CO ₂ emission coefficient database, and each power generation is calculated from the product of the CO ₂ emission coefficient of each power generation facility and the amount of generated power. A calculation unit (22) for determining an actual CO ₂ emission amount of the facility, and calculating an actual total CO ₂ emission coefficient from the actual total CO ₂ emission amount and the total generated power amount of all the power generation facilities; An exhaust CO ₂ monitoring system characterized by this. The communication unit (14) extracts power consumption data of each consumer by connecting to a watt-hour meter (24) that measures the power consumption in the customer's house (4) and the like.
The calculation unit (22) calculates an actual CO ₂ emission amount generated by each consumer from the obtained actual CO ₂ total emission coefficient and the extracted electricity usage amount of each consumer. The exhaust CO ₂ monitoring system according to claim 1. Central power supply command center that remotely controls the operation of multiple power generation facilities such as oil-fired power plants, gas-fired power plants, coal-fired power plants, hydroelectric power plants, and nuclear power plants based on the prediction of power consumption (2) A control command signal for remotely controlling the operation of the power generation facility from the power supply control system (12) of
The operation state of each power generation facility is obtained from the received control command signal, and the actual CO ₂ emission amount of each power generation facility is obtained from the product of the CO ₂ emission coefficient of each power generation facility and the generated power amount in the operation state,
A method for monitoring exhausted CO ₂ , wherein an actual total CO ₂ emission coefficient is obtained from an actual total CO ₂ emission amount and total generated power amount of all power generation facilities. The actual CO ₂ emissions of each power generation facility, the actual total CO ₂ emissions and / or the actual total CO ₂ emission factor of the total power generation equipment was available on the website, it in claim 3, wherein The method for monitoring exhausted CO ₂ as described. If the actual total CO ₂ emission factor exceeds a predetermined reference value, call on the website to refrain from the use of electricity to consumers, it monitors the emissions of CO ₂ according to claim 3 or 4, wherein Method.

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