JPS5889021A - Secondary electric amount discriminating circuit - 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 The present invention relates to a two-dimensional electric power determination circuit that determines whether a target phenomenon to be detected is occurring based on the mutual relationship between the magnitudes of two types of detected electric quantities.

For example, in a power system, the correlation between the real part (R component) and the imaginary part (X component) of the transmission line impedance is investigated and the results are used to determine whether an accident has occurred within the protection range of the transmission line. Distance to judge Ratio to judge whether or not an accident has occurred inside the equipment based on the correlation between the magnitude of the current flowing into and out of the equipment (e.g. transformer or bus bar) in the relay or power system Many methods have been put into practical use for differential relays and the like.

For example, as an example, a conventional relay circuit is shown in an IT diagram in FIG. A type that is easy to process the amount of electricity to be output: A $1 electric quantity converter that converts into two and outputs the quantity of electricity E1, 2b is a type I that is easy to process the quantity of electricity output by the second signal source 1b: Converted electricity amount E2
It is a second electrical quantity converter for outputting electrical quantity E1 and electrical quantity E2, and is connected to a characteristic value calculation circuit 5 that receives the electrical quantity E1 and electrical quantity E2 and calculates and outputs a characteristic value corresponding to the magnitude of both. . 4 is a constant setter that sets and outputs a certain constant; 5 is a constant setter that compares the output of the characteristic value calculation circuit 5 with the output of the constant setter 4; for example, if the output of the characteristic value calculation circuit 3 is higher than the output of the constant setter 4; This is a comparison circuit that generates an output signal when the comparison circuit 5 is smaller or equal, and when the output of the comparison circuit 5 is given, the final output circuit 6 is activated.

Next, the operation of the above conventional circuit example will be described below. In other words, the amount of electricity output by the signal source 1a of $1 is the first
The electrical quantity converter 2a converts the electrical quantity into a form that is easy to process (for example, performs alternating current rectification, scale conversion, digitization, etc. as necessary), and outputs the electrical quantity E1. Similarly, the quantity of electricity output by the second signal source 1b is similarly converted into a form that is easy to process by the second quantity converter 2b, and the quantity of electricity E2 is output. Therefore, the characteristic value that is uniquely determined is r(
The comparison circuit 5 calculates and outputs the outputs tcE1.B1, B2) of the characteristic value calculation circuit 5. E2) and the output of the constant setter 4 are compared, and an output signal is generated when, for example, f(B1.B2)≦. In other words, the correlation between the electrical quantity E1 and the electrical quantity E2 is r(Fil
, B2)≦K, it is determined that a phenomenon to be detected has occurred, and this r (E 1 * B2) is calculated by the characteristic value calculation circuit 31: and the constant setter 4C.
: A comparison circuit 5 compares the characteristic value r (El, B2) with the constant to determine whether an output signal is generated.

However, since the conventional two-dimensional electric quantity determination circuit is configured as described above, the characteristic value determined by C = two electric quantities E1 and B2 is calculated to determine whether a phenomenon to be detected has occurred. However, the disadvantages are that the circuitry to be used becomes complicated, and that it is generally very difficult to realize arbitrary characteristics.

Therefore, the present invention was made to eliminate the above-mentioned drawbacks, and since the light emitting elements are arranged in a matrix, C; $1
The magnitude of the electrical quantity E1 of the signal source 1a is plotted on the abscissa, and $
The magnitude of the electric quantity E2 of the second signal source 1b is arranged on the ordinate so that only one light emitting element on the matrix emits light, and the electric quantity E1 and the light emitting element corresponding to the electric quantity -B2 to be determined are determined. A light passing range setting device was installed to allow only the emitted light to pass through to the receiver, and to block the light emitted by other light emitting elements from the receiver, and a certain phenomenon occurred only when the receiver received light. It is an object of the present invention to provide a two-dimensional electric quantity determination circuit that can reliably and inexpensively determine arbitrary characteristics by simply changing the light-transmitting configuration of a light passage range setting device.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the drawings, parts with the same number as Figure 1 are denoted by the same reference numerals as 51J.
11a is a first decoder that decomposes the output of the electric quantity converter 2IL of '1J41 into n (n: a positive integer) individual signals according to their size and outputs them;
11b is a @2 decoder that decomposes the output of the electric quantity converter 2b of $2 into m (m: positive integer) individual signals according to the size and outputs the signals; 12 is the n of the decoder 111;
and the output of the mold side of the decoder 11b as vertical and horizontal signals, respectively, are arranged in order of size to form a matrix of 1 row and n columns, and each intersection has a corresponding row. and a light-emitting element matrix in which light-emitting elements such as light-emitting diodes that emit light when a signal is applied are arranged; 15 is a light passing range that allows or blocks the light emitted from each light-emitting element of the light-emitting element matrix 12; A setting device 14 is a light receiver that detects the light that has passed through the light passing range setting device 15, and 6 is an output circuit that executes an output sequence when the light receiver 14 detects light.

In C2 of the present invention having the above-described configuration, the breathing motion will be explained. First, the electrical quantity output from the $1 signal source 1 is converted into a form that is easy to process in the first electrical quantity converter 2&I; (for example, AC is rectified, scaled, and digitized as necessary). Electricity [1 is output. Similarly c
; The signal source 1b of $2 is also converted into a form that is easy to process by the electrical quantity converter 2b of I82, and electricity IB2 is output. Then, the output E1 of the first electrical quantity converter 2a is converted to n(n:
positive integer) into individual signals. The output E2 of the electric quantity converter 2b of @2 is decomposed into ya (m: positive integer) individual signals according to the size by the decoder 1'1''b of '@2.The light emitting element matrix 12 is n outputs of the decoder 11a and one output of the decoder 11b are arranged in order of size as vertical and horizontal signals, forming a matrix with rows and n columns, and each intersection has a corresponding one. Light-emitting elements such as light-emitting diodes that emit light when a signal is applied to the row and column C are arranged.A certain phenomenon occurs in the light passing range setting device 15 as shown in Fig. 2). Electricity amount E1 to be determined as
The light-shielding plate is hollowed out so that only the light emitted by the light-emitting elements with the corresponding coordinates passes through to the light receiver 14. Therefore, the light emitted by the light-emitting elements of the light-emitting element matrix 12 is the light passing range setting device 1
3. If the light is received by the light receiver 141, it can be determined that a phenomenon to be detected has occurred (2).

In addition, in the above embodiment, as a means for determining a two-dimensional quantity of electricity, an example of the configuration of a light emitting element light passage range setter on a light emitting element matrix corresponding to a light emitting element matrix and characteristics to be realized was explained, but this is not intended to be construed as such. It is needless to say that the present invention is not limited to the present invention, and the same effects as those of the above embodiments can be obtained even if a method using electrical contact, a magnetic method, a diode matrix, or the like is used.

As described above, according to the present invention, as a means for realizing the characteristics to be determined, a light passage is set to pass light emitted above the light emitting element matrix in accordance with the characteristics to be realized. Since a range setting device is provided and only the light that has passed is received by the receiver, characteristics can be achieved by simply changing the settings of the light passing range setting device, and it is also easy to realize arbitrary characteristics. This has the remarkable effect of being able to provide a two-dimensional electric quantity determination circuit that can be used at a low cost.

[Brief explanation of drawings]

FIG. 1 shows a conventional two-dimensional electricity quantity determination circuit, @2 is a two-dimensional electricity quantity determination circuit and an example of the device configuration showing an embodiment of the present invention. 1a, 1b...signal source, 2a s 2b...electrical quantity converter, 5...characteristic value calculation circuit, 4...constant setter, 5...comparison circuit, 6...output circuit , 11m, 11
b...Decoder, 12...Light emitting element matrix, 1
5... Light passage range setting device, 14... Light receiver. Note that the same reference numerals in the figures indicate the same or equivalent parts. Acting person Shin Kuzuno (and 1 other person) Jlyl Drawing procedure amendment (voluntary) Commissioner of the Japan Patent Office 1, Indication of case Patent application No. 187268-1982 2
, Title of the invention 2-dimensional electric quantity determination 5its 3. Person making the amendment Representative Katayuni Department 4. Agent 5. Column 6 for detailed explanation of the invention in the specification to be amended Contents of the amendment (1) Letter of specification From page 4, page 6, page 7, ``comparison circuit 5 with output T'' is corrected to ``comparison circuit jif! 5J''.
” is corrected to “It occurs and is determined to be 6.” (31 Specification page 4, line 13 to 15 The phrase ``a constant setting device for weighing,'' is amended to read, ``Weighing, and setting a constant using a constant glI measuring device 4. 6 Tei 1! 10 楓C: "Kuchi and Signal" has been corrected to [6 and column 3 = individual school name]. (5) Specification page 7, 3 Leopard C 2 "Signal - 1bJ is corrected to ``signal -1b outputs 1M''.

Claims (1)

[Claims] An electrical quantity converter @1 that appropriately converts the quantity of electricity outputted by the first signal source among the two sets of first and second detected signal sources; a second electrical quantity converter that converts the electrical quantity as appropriate; a $1 decoder that decomposes the output signal of the electrical quantity converter of I81 into n individual signals according to their magnitudes and outputs them; and the second electrical quantity converter a second decoder that decomposes the output of the quantity converter into one individual signal according to its size and outputs the same; × n light-emitting elements that are input as coordinate signals in the vertical and horizontal directions to form a matrix of one row and n columns, and that emit light when the coordinate signals are applied to the rows and columns corresponding to each intersection of the matrix. an arrayed light emitting element matrix; a light passing range setting device for setting whether to pass or block light emitted by each light emitting element included in the light emitting element matrix; and an arbitrary light emitting element in the light emitting element matrix. and a light receiver that detects emitted light when it passes through the light passage setting device.