Sounds close to the Pederson system.
That just the Match point system, nothing like The Petersen Point System.
In the Match Point system each player bowls against the player opposite them in the opponent’s lineup. The points are awarded on an individual and team basis.
In Petersen Points usually, You get 1 point for every "Block" of 25, 50 or 100 pins of total scratch or handicap scores. The bonus is then calculated by taking the player's or team's total scores (scratch or handicap) and dividing it by the block size.
For example, if you used a 50 pin block and bowled a 575, it would be 11 points. (575 divided by 50= 11.5, with the fraction dropped).
Another variation of the Petersen point system, is where points are awarded for each "block" of pins scored. For examples, if the "block" is defined as 50 pins, and you shoot 575, you would receive 11 Petersen points. In addition, bonus points are awarded for victories. (A variation of this is where you don't drop the fraction.)
Example if you won 2 games (out of 3) plus series and 10 points were awarded for each victory, you would receive a total of 41 points for the evening. (20 points for the 2 games and 10 for the series. 11+20+10=41)
From Bowl.com
LOUIS PETERSEN
Chicago
Born: Sept. 23, 1883
Died: June 20, 1958
Inducted 1963
A scoring system and a bowling tournament have etched Petersen's name indelibly in the upper strata of bowling contributors. He started his famous Petersen Classic in 1921 and that event's popularity has grown each year. Petersen also originated the point system bearing his name. He also was a founder of the Bowling Proprietors Association of America in 1932 and a prime mover of high school bowling.