JPS61132041A - Demand controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

[Field of underground IJ] This invention relates to a demand control device that monitors and controls the amount of power used during a demand time period such as 30 minutes so that it does not exceed the contracted amount of power.
reactor. [Prior Art] Figure M6 is a block diagram showing a conventional demand control device disclosed in, for example, Japanese Patent Application Laid-Open No. 55-48950. For example, the load (1) is 80 in the m5 diagram.
The amount of power to be used in a demand period such as a minute is contracted, and it is composed of a plurality of loads (1a) to (1n). The watt-hour meter with transmitter (2) is connected to the meter transformer (3).
) and the load current of the load (1) detected by the instrument current transformer (4),
It measures the power used by the load (1), and transmits the measured value to the demand control device (5) using a pulse signal. The demand control system (6) consists of the following devices. The input control unit (6) receives and counts pulse signals proportional to the amount of power used by the load (1) from the power meter with transmitter (2). The time limit section (7) measures a demand time limit, outputs a demand signal @, for example, every 80 minutes, and outputs a calculation signal at regular intervals. The display setting section (8) displays the target demand value and load (1a).
to (1n) are set and displayed. The arithmetic processing section (9) calculates the count value of the input control section (6) and the time limit section (
A predicted demand value at the end of the demand time period is calculated from the remaining time of step 7), a comparison calculation is made between this predicted calculated value and the target demand value set in the display setting section (8), and the predicted calculated value is calculated. Calculate the adjusted power based on the The output control unit α1 applies an alarm output from the calculation processing unit (9) to the alarm relay part αD (to be described later) so that the previous two prediction calculation values exceed the target demand value, and the adjustment power is applied to the display setting unit ( 8
) exceeds the cutoff power value set in the arithmetic processing section (9
) is applied to a portion of the control relay (2) described later. The alarm relay part (2) generates an output for energizing the alarm devices (18a) to (tan) corresponding to the loads (1a) to (1n), for example, in response to an input signal from the output control unit αO. The control relay part (2) produces an output to cut off the IP of the loads (1a) to (1n) according to the input signal from the output control part αQ.The operation will be explained next. Electric energy meter with transmitter (21
It is connected to the load (1) and sends out a pulse signal proportional to the amount of power used. The input control section (6) receives this pulse signal and multiplies it by four. The time limit section (7) measures the demand time limit, creates a demand time limit signal of, for example, 80 minutes, and outputs a calculation signal that determines a calculation interval at fixed time intervals. The arithmetic processing unit (9) uses the count value of the human control unit (6) and the remaining time limit of the time limit unit (7) to determine whether the predicted demand value to be melted at the end of the demand time period exceeds the target demand value. For example, if it exceeds the load (
Does it correspond to 1a)? ! A first alarm signal is generated to energize the F alarm system (13a). If the cut-off power value set in (8) is exceeded, a second alarm signal is generated that activates the alarm device (LAB) fp corresponding to the load (1b), for example. (1a) Generates a load cutoff signal. The stiff signal drives the output control unit's ξζ input 61, and the alarm signal drives the alarm relay part (■) to set the corresponding alarm value 9 (18a) to (1).
8n). In addition, the load cutoff signal is generated by driving the corresponding relay of the control relay part (2) and disconnecting the corresponding load (1a).
~(1n) lp shut off. [Problems that the invention is unlikely to solve] Since the conventional demand control device is configured as described above, the loads (1a) to (1n) to be cut off are controlled.
) are scattered far away, or the locations that notify the demand alarm are scattered and the alarm devices (18a) to (18n)
If the load control power lines are scattered around, it is necessary to twist the load control power lines for this device individually.Especially if the distance between the power lines is long, the construction cost is enormous compared to that of a demand control device. Ta. In addition, for customers who have a small number of loads (1a) to (1n) subject to cutoff control, who do not require 4 or JK load control, or who do not require demand alarm output, unrequired functions may be added. 1, it is expensive compared to the required functions, so there is a request to reduce the price by removing unused functions. This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and the main unit, the alarm unit, and the control unit are provided with separate and independent points, and a remote display unit can also be connected. Accordingly, it is an object of the present invention to provide a demand control device in which each device can be arranged and mounted at a desired location, and a unit configuration can be assembled according to the necessary Iζ. [Means for Solving the Problems] The demand control device according to the present invention has a main unit, an alarm unit, and a control unit separated and independent, and further includes a remote display unit, and each device has a signal transmission section. The signal lines are used to connect the devices in the inner warehouse and the other devices. [Function] In this invention, the base unit, alarm unit, and control unit are separated and independent, and a remote display unit is provided.
Each device is equipped with a built-in signal transmission section, and a dedicated 2-core signal line is used to connect these devices, and 11 address signals are transmitted between them and the base device through cyclic time-division multiplex transmission. , control signal humiliation various kinds of bootara transmission made to sell. [Narrowing, 4!1] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of a demand control device according to the present invention. In Fig. 1, load (1) is one for which the amount of power used in a demand time period such as 80 minutes is contracted, and multiple loads (1a) to (
1n) Twisted component point 1. Electric energy meter with transmitter (2)
The voltage of load (1) is determined by the voltage applied to the load (1) detected by the voltage transformer (3) and the load current of the load (1) detected by the current transformer (4). It measures the power used, and is sold as a device that transmits the measured value of 7 pulse signals to the main unit (-). The unit (-) is the central unit of this device, and is composed of the following devices. The input control unit (1 (11) receives and counts a pulse signal proportional to the watt-hour meter used at the load (1) from the watt-hour meter with transmitter (2). Timing unit (102) measures the demand time limit, outputs a demand signal every 30 minutes, and outputs a calculated signal at fixed intervals.The setting section (10i3"+) sets the target demand value and the cutoff power values of loads (1a) to (1n). The arithmetic processing unit (104) performs a predictive calculation of the demand value at the end of the demand time period based on the count value of the input control unit (101) and the remaining time of the time limit unit (102), and uses this predicted calculation value and the remaining time of the time limit unit (102). A comparison calculation is made with the target demand value set in the setting unit (108), and an adjusted power is calculated based on the predicted calculated value.The signal transmission unit (105) When the value is exceeded, the calculation processing unit (104)
The 9-report output signal @ is converted into a predetermined transmission signal and transmitted to a good news unit (200), which will be described later, via an output terminal (106), and the adjusted power is set in a setting section (108). When the point I cutoff power value 5 - λ, the arithmetic processing unit (LO
1/2 output signal small output terminal (106) b from 4'l
Intermediate

[] The signal is converted into a predetermined transmission signal and transmitted to a control unit (3 (10), which will be described later).A display section (107) displays the calculation results and output signals of the oil body processing section (104). The alarm unit (200) consists of the following devices:
I'm here. The input terminal (201) is the output terminal (
106) is connected to the signal line (181), which is a two-core twisted pair cable.
05) Receive and demodulate the alarm output signals of 2)). The address G constant section (208) is set with an address corresponding to the alarm unit (200), that is, an address corresponding to the arithmetic processing section (204). The arithmetic processing unit (204) reads the demodulated signal (○) in the signal transmission unit (202), reads its own address set in the address setting unit (C208), and determines whether the signal at the transmission point (○) is its own. It determines whether or not it is present at the given address, and outputs a small signal corresponding to its contents, as it relates to itself. The output control section (205) energizes the alarm relay part (206) fp according to the content of the output signal of the arithmetic processing section (204), for example, the alarm device (206) corresponding to the loads (1a) to (1n).
13a) to (lan) are generated. The control unit 100) is composed of the following devices. The input terminal (801) is connected to the input terminal (201) of the alarm unit (20G) via a signal line ([12], which is, for example, a two-core twisted pair cable). The signal transmission section (302) receives the cutoff output signal from the signal transmission section (105) of the base unit and demodulates it. The address setting section (808) has a set point 1 of the address corresponding to the control unit (800), that is, the adjacent address corresponding to the arithmetic processing section (804). The arithmetic processing section (8G4) is the signal transmission section (
802) reads the demodulated signal and reads its own address set in the address setting section (808), and determines whether the transmitted signal is given to its own address or not. Judgment 1 is related to oneself, and if it is +r+, a message corresponding to the content is output. The output control unit (805) controls the control relay part (806) according to the content of the output of the arithmetic processing unit (8G4).
(la) ~ (in) & produces an output that cuts off. ml? The % display unit (40G) is composed of the following devices at configuration point 1. The input terminal (401) is connected to the input terminal (801) of the control unit (800) via a signal line (18B), which is, for example, a two-core twisted pair cable. The signal transmission unit (402) receives and demodulates signals such as predicted value, remaining time, adjusted power value, target demand value, demand warning, load cutoff, etc. from the signal transmission unit (105) of the base unit. The address setting section C408) has a set point j at the address corresponding to the remote display unit (40G), that is, the address corresponding to the arithmetic processing section (404). The arithmetic processing unit (404) uses the signal transmission unit (402) to perform demodulation and signal transmission! and its own address set in the address setting section (40m), determines whether the transmitted signal is unique to its own address, and If it is related to Thf″I,
Output a signal according to the content of the daytime and set a display point on the display section (405) and a memory point on the storage section (406). Next, let me explain how it works. Parent unit (- input control section (1)
01) receives and counts the transmitted pulses of the electricity meter with transmitter (21). Also, the time limit section (102) creates and outputs a demand time limit of, for example, every 30 minutes, and also outputs the 'Ni calculation interval at a fixed time interval. A third-order processing unit (104) that outputs a calculation result that determines the predicted value of the demand value at the end of the demand time period is calculated from the count value of the input control unit (101) and the qh time period of the time limit unit (102). A calculation is performed, and it is determined whether or not this value exceeds the target demand value set in the setting section (108'). If f'l is exceeded, for example, the load (
Generate the alarm signal of Todoroki 1 that activates the alarm-neighbor 'N (13B) corresponding to 1a). Also, calculate the adjusted power based on the predicted value, and set this value Cζ when the first alarm occurs. Department (
If the cutoff ffl force value set in 108) is exceeded, the alarm device (lllb) corresponding to the load (1b), for example,
It generates the guard side @ of m2 that energizes p, and also loads (1
g) Generate a load cutoff signal to cut off lh. These calculation results, alarm signals, and load cutoff signals are displayed on the display section (107). Further, these data are passed to a signal transmission section (105), where they are converted into a predetermined transmission signal and outputted to an output terminal (106). This signal is trustworthy! III (xat) It is input to the input terminal (201) of the alarm unit (20G) via IP, and is received by the signal transmission section (202). The signal transmission unit (202) demodulates the received signal 1 and arithmetic processing unit C2.
04) reads this value, reads its own address set in the address setting section (208), and determines whether the transmitted value is given to its own address or not. Judgment, it's related to Gζ myself, so L
If so, a signal is output to the output control unit (205) according to the content of the screen, and the corresponding relay circuit of the alarm relay part (206) is driven/activated to the corresponding relay circuit connected to this 1. Activate the alarm system @ (lla) ~ (18n) fp. Next, the control unit (80) is connected via the signal line (182) 5I.
The signal input to the input terminal (301) of 0) is processed in the same way as the alarm unit (200), and a control relay outputs an output to cut off the loads (1a) to (1n) according to the content of this signal. <RO6). Furthermore, the signal input to the input terminal (401'+) of the remote display unit (4110) via the signal line (IJ8) 5- is processed in the same way as the control unit (800), and depending on the content Cζ of this signal, It is displayed on the display section (405) and stored in the storage section (406').
02), (402) is converted into sequenceable ml't, and is baseband or modulated, and then sent to the signal line (181).
, (182), can be placed on the CI. Accordingly,
For the signal lines L131), (182), and (18B), for example, two-core twisted pair cables can be used. Figure 2 shows Shinkyu transmission sections (105), (202), (802).
), (402) The structure of the signal transmitted between (402) is sold as (2). This transmission is carried out sequentially from the main unit (IJ1, alarm unit (200), control unit L8oo).
, a remote display unit (400) or other so-called slave unit (hereinafter referred to as a slave unit) is called up to send and receive necessary commands and data. First, Soba ζ and address word (601) fIP are sent. This address word (601) is used to identify which handset (200), (aoo), (400) is being transmitted from the parent @+- to which child fBt2 (lo
), (800), (400) address setting section (208
), (308), and (d08).
20Q), (800), and (441Q) are the spear transmission partners. Next, output the control word (6112) e a. This control word (602) is a command code that indicates what kind of operation is to be performed on the slave device (2001, (80G), (400)) that is the transmission partner, from ``1'' to hh, for example, broadly divided into control@ r- can be used to determine two operation modes: operation mode and data length specification mode.In other words, if you do not want to perform any cut alt on slave units (209), (800), and (400), For example, when the handsets (200), (300), and (40G) receive a code for 8 years old and folding in response to a control operation that sells a specific code,
The 571ci data length specification mode is a data length specification mode that decodes the code of the spear and performs the corresponding operation in advance.
200), 1001, and (4110), the length of the data to be transmitted is specified as well as the number of bytes h of the data word to be transmitted. For example, if this code is OOH, the data is 0 bytes, and if this code is OIH, the data is 1.
If the code is 02H, the data will consist of 2 bytes, and if the code is 1H or less, the data length will be 8 bytes. Next, the first sum check word (60jl) eM is output, which adds the code of the address word (601) and control word (602), and adds the value to the first sum check word (608). This is to check for errors that may occur during transmission.
In IJ, the received codes of the address word (601) and control word (602) are added, and this value is compared with the value of the first sum check word (6 ([)). It is determined that the transmission has occurred.Next, data words (610) to (617) are output.These data words (610) to (617) are transmitted to the master unit and slave units t200), (800), and (400). ), the data is sent and received between ah, and is transmitted when the control word (602) mentioned above is a code corresponding to the data length specification mode. That is, for example, when the control word (602) is oaH, the data word is 3 bytes (610), (611), and (612) to 5! When the number is 1 or 05H, the data word is (6
10), (611), (612), (61g), (61
4) consists of 5 bytes. A second sum check word (618) is added to the end of the data words (61G) to (617) and sent to the doctor. This word is the aforementioned address word (601), control word (602), and il T's thumb manipulation 1. word (60g), and data word (610) to (6
Add all the codes of 17'l and remove the overflowing ones and add the result to the second sum of 1,000 j - tsqwords (
618). This word is also used to perform a thousand or two transmission errors with C as described above, so the operation on the receiving side is similar to the first thumb trick and the second word (608). ff1RQ is the address word L601), the control word (602), and the first sum check word (60R
), in the word column e or in the inno 1 chart, for example, the address word (601"l) first starts with the start bit (60
11) is 4τ3, and the signal bit L601b) is arranged next,
Finally, a stop bit (6010) is added. Figure 4 is a diagram for explaining the address word (Rol) in more detail. First there is a start bit (601a), then a signal 1 bit ( 601bl is transmitted in a 9-bit configuration.The last bit is the verity bit (601d) for error checking.There is also a stop bit (601c) at the end.This bit configuration is controlled. Not only the word (6G2) and the first sum check word (6Gg), but also the Q-now words L610) to (R17) and the second sum check word (618) have the same structure, and with the above structure, the signal Transmission is performed. Here, checking for transmission errors is performed by sending the τ′1
, second sum check word (60F+1, (6181
, and done with 1,000 nicks of parity bits for each word 1
reactor. In other words, from the parent device to the corresponding child device (200), (80
(When the PR signal shown in Figures 2-4 is sent to 11C4001, the corresponding handset (2410), c3
00), (4nO) receives this signal @, gives it to itself, and determines whether it is a signal or not, with the address word < 6 ' 1
) lp decode and judge. In addition, the verity pit, the first and second sum check words (eos), (618
) and if this check detects an error,
It waits for the retransmission of the signal from the base unit (-) without performing any operation.Of course, if there is an error in the address word (601), the slave unit L200', (jloo), whose address does not exist,
(There may also be cases where the error hfPt is 5, such as when 4nQ 1 was sent to 8 units. In this case, the corresponding handset
, (800), (4001 does not exist, so the slave units (200), (100), and (400) do nothing.
, (800), and (400) return signals indicating completion of operations and data transfer fees. If there is no return during this period, the same signal as last time is sent again to the corresponding handset (200), (
11 (10), C400). If the slave units (2011), (1001, and (400)) correctly receive this re-transmitted signal, they will send it back to the base unit tH.If an error h6 occurs in the reception of the re-transmitted signal as well, ,
Since it is not possible to return the 1ml to the master unit (-), we assume that there is an error in the slave unit (200), (lo), (4oo) and move it to the next address, Hepo II Inge Operation Center. In the example of actual control on the table, the handset (20G), (800), (
For convenience of explanation, 400) is a single report unit (200), a control unit (?IQO), and a remote display unit (400).
We have explained the case in which 11 units of L200 are connected, but of course it is possible to connect as many units as required, and a stiff slave L200 can be connected to each of the 511 distributed locations.
), (ROO), (400) are IP-equipped and can send and receive necessary signals and data from the base unit to the screen. Also connected. Handset (200), (300), (4
00) are sold in various numbers, so the main unit (Kawa and I) operates 11 and 8 ports, and the slave unit (200),
(?1110), (If you memorize the number of 4001 units by some means and add them to 8, there will be no need to perform unnecessary polling//a' operations, which will be advantageous in terms of transmission processing capacity.For this purpose, Slave device (200”l, (1
'100), (400) number set with a switch etc.
It is also possible to use a keyboard or the like to enter the number of connections and record it in the internal memo 11 circuit. Without further configuration, the system and () τ cloud 1 throw. 6, as the initial processing, the parent device (from the - side, the child device (200), (JQO), (4110), tp call, and the reply is sent to the child device at the address sold (2011), (ROO).
If it is configured so that only (40Q) is connected and the addresses of its slave units (20n), (800), and (400) are memorized, the setting means described above can be made unnecessary. . [Effects of the Invention] As described above, according to the present invention, since the conventional demagogue control device 1f5 is configured with independent equipment consisting of a base unit, an alarm unit, a control unit, and a remote display unit, it is possible to control In cases where the target negative moe, the place where information is displayed, the place where various data necessary for power management are displayed, or the place where the various data necessary for power management are displayed are distributed over long distances, a wiring worker's car can be easily and inexpensively used as a decoration. Article. Furthermore, since the alarm unit, control unit, and remote display unit can be selected as needed, a configuration that meets the needs can be assembled, and waste 81 can be eliminated in terms of function and price. Furthermore, each unit can be placed and installed where it is needed.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of the demand control device according to the present invention, FIG. FIG. 4 is a time chart of the bit structure of the address word of FIG. 3, and FIG. 5 is a block diagram showing the conventional demand control≠position fp. In the figure, (1], (1a) to (1n) are loads, (2
) is sent! The PPP power consumption meter is a main unit, (101) is an input control section, (10211; is a time limit section, (108) is a setting section, (1041 is an arithmetic processing section, (105) is a Shinkyu transmission section, (200) ) is the back information unit, (2112) is the Shinkyuden necessary part, (203) is the address setting part, (204'+ is the arithmetic processing part, (2 (15) is the output side a part, (800) is the control unit , t'an21 is Shinkyuden Q5'm s(+
'1Q8) is the address setting section, (804) is the rising resistance processing section, (RO51 is the output) O details, (18a) to (IRn)
129 report pq, (400”l is remote display unit, (4
02) Transmission section, (4n:41 is address setting section,
(4114) is the 1st processing section, (4115) is the display section, (
406) is the storage section, (181), (132), L1+
lI'l) is the signal line. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] (1) An input control unit that receives and counts the number of pulses from a power meter with a transmitter, a time limit unit that measures the demand time and outputs a calculation signal at regular intervals, and a target demand value and load cutoff power value. The demand value at the end of the demand time period is predicted based on the count value of the input control section and the remaining time of the time limit section, and this predicted calculation value and the target demand set in the setting section are set. an arithmetic processing unit that performs a comparison operation with a value and calculates an adjusted power based on the predicted calculated value; and an arithmetic processing unit that converts an alarm output signal from the arithmetic processing unit into a predetermined transmission signal when the predicted calculated value exceeds the target demand value; a signal transmission section that converts and outputs the cutoff output signal from the arithmetic processing section into a predetermined transmission signal and outputs the cutoff output signal when the adjusted power exceeds the cutoff power value set in the setting section; a signal transmission unit that is connected to the signal transmission unit of the base unit via a signal line and receives and demodulates the alarm output signal from the signal transmission unit of the base unit, and an address to which the address of the device itself is set. The demodulated alarm output signal is given to the device by reading the alarm output signal demodulated by the setting section and the signal transmission section and reading the address of the device itself set in the address setting section. an arithmetic processing unit that outputs an alarm signal according to the contents of the demodulated alarm output signal, if any; and an output control unit that generates an output that energizes the alarm device according to the content of the alarm signal of the arithmetic processing unit. an alarm unit, a signal transmission unit that is connected to the signal transmission unit of the base unit via a signal line and receives and demodulates the cutoff output signal from the signal transmission unit of the base unit, and the address of the device itself are set. the address setting section, which reads the cutoff output signal demodulated by the signal transmission section, and reads the address of the device itself set in the address setting section, and the demodulated cutoff output signal is given to the device. an arithmetic processing unit that outputs a cutoff signal according to the content of the demodulated cutoff output signal; and an output control unit that generates an output that cuts off the load according to the content of the cutoff signal of the arithmetic processing unit. a control unit, a signal transmission section that is connected to the signal transmission section of the base device via a signal line and receives and demodulates the output signal from the base device, and an address setting section in which the address of the device itself is set. Then, read the signal demodulated by the signal transmission section and read the address of the device itself set in the address setting section, and if the demodulated signal is given to the device, the demodulated signal is read. 1. A demand control device comprising a remote display unit comprising an arithmetic processing section that causes a signal to be displayed on a display section or stored in a storage section according to the content of the signal.